./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3164459211 <...> Warning: Permanently added '10.128.10.58' (ED25519) to the list of known hosts. execve("./syz-executor3164459211", ["./syz-executor3164459211"], 0x7ffd0c4212e0 /* 10 vars */) = 0 brk(NULL) = 0x5555900c9000 brk(0x5555900c9d40) = 0x5555900c9d40 arch_prctl(ARCH_SET_FS, 0x5555900c93c0) = 0 set_tid_address(0x5555900c9690) = 295 set_robust_list(0x5555900c96a0, 24) = 0 rseq(0x5555900c9ce0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3164459211", 4096) = 28 getrandom("\x6b\x0a\x60\x11\xff\xca\x4d\x9b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555900c9d40 brk(0x5555900ead40) = 0x5555900ead40 brk(0x5555900eb000) = 0x5555900eb000 mprotect(0x7ff437b13000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 openat(AT_FDCWD, "/dev/loop0", O_RDWRexecuting program ) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 296 ./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x5555900c96a0, 24) = 0 [pid 296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 296] setpgid(0, 0) = 0 [pid 296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 296] write(3, "1000", 4) = 4 [pid 296] close(3) = 0 [pid 296] write(1, "executing program\n", 18) = 18 [pid 296] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 296] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 296] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 296] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 296] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[297]}, 88) = 297 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 297] creat("./bus", 000) = 3 [pid 297] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] <... futex resumed>) = 0 [pid 296] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 296] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 296] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 296] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[299]}, 88) = 299 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 297] memfd_create("syzkaller", 0) = 4 [pid 297] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 297] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 297] munmap(0x7ff42f60d000, 138412032) = 0 [pid 297] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 23.984738][ T30] audit: type=1400 audit(1742081212.327:66): avc: denied { execmem } for pid=295 comm="syz-executor316" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.005590][ T30] audit: type=1400 audit(1742081212.347:67): avc: denied { read write } for pid=295 comm="syz-executor316" name="loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 297] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 299 attached ) = 0 [pid 297] close(4) = 0 [pid 297] close(5 [pid 299] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 299] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 299] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] <... futex resumed>) = 0 [pid 299] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 296] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... open resumed>) = 4 [pid 299] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] <... futex resumed>) = 0 [pid 299] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 296] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 297] <... close resumed>) = 0 [pid 297] mkdir(0x400000000000, 0777 [pid 299] <... mmap resumed>) = 0x400000000000 [pid 299] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 296] <... futex resumed>) = 0 [pid 296] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 299] <... futex resumed>) = 1 [pid 299] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 297] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 297] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 297] ioctl(5, LOOP_CLR_FD) = 0 [pid 297] close(5) = 0 [pid 297] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 24.029695][ T297] loop0: detected capacity change from 0 to 512 [ 24.035785][ T30] audit: type=1400 audit(1742081212.347:68): avc: denied { open } for pid=295 comm="syz-executor316" path="/dev/loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 24.059734][ T30] audit: type=1400 audit(1742081212.347:69): avc: denied { ioctl } for pid=295 comm="syz-executor316" path="/dev/loop0" dev="devtmpfs" ino=112 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 24.085252][ T30] audit: type=1400 audit(1742081212.377:70): avc: denied { mounton } for pid=296 comm="syz-executor316" path="/root/bus" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=file permissive=1 [ 24.108482][ T30] audit: type=1400 audit(1742081212.377:71): avc: denied { map } for pid=296 comm="syz-executor316" path="/root/bus" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 24.132513][ T30] audit: type=1400 audit(1742081212.377:72): avc: denied { prog_load } for pid=296 comm="syz-executor316" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 24.151844][ T30] audit: type=1400 audit(1742081212.377:73): avc: denied { bpf } for pid=296 comm="syz-executor316" capability=39 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=capability2 permissive=1 [pid 297] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 299] <... bpf resumed>) = 5 [pid 299] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 299] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 296] <... futex resumed>) = 0 [pid 296] exit_group(0 [pid 297] <... futex resumed>) = ? [pid 296] <... exit_group resumed>) = ? [pid 299] <... futex resumed>) = ? [pid 297] +++ exited with 0 +++ [ 24.308292][ T30] audit: type=1400 audit(1742081212.647:74): avc: denied { perfmon } for pid=296 comm="syz-executor316" capability=38 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=capability2 permissive=1 [ 24.329403][ T30] audit: type=1400 audit(1742081212.667:75): avc: denied { prog_run } for pid=296 comm="syz-executor316" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [pid 299] +++ exited with 0 +++ [pid 296] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=296, si_uid=0, si_status=0, si_utime=0, si_stime=26} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 301 ./strace-static-x86_64: Process 301 attached [pid 301] set_robust_list(0x5555900c96a0, 24) = 0 [pid 301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 301] setpgid(0, 0) = 0 [pid 301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 301] write(3, "1000", 4) = 4 [pid 301] close(3) = 0 [pid 301] write(1, "executing program\n", 18executing program ) = 18 [pid 301] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 301] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 301] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 301] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 301] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 301] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[302]}, 88) = 302 [pid 301] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 301] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 301] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 302 attached [pid 302] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 302] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 302] creat("./bus", 000) = 3 [pid 302] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 301] <... futex resumed>) = 0 [pid 301] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 301] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 301] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 301] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 301] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[303]}, 88) = 303 [pid 301] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 301] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 301] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... futex resumed>) = 1 [pid 302] memfd_create("syzkaller", 0) = 4 [pid 302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 302] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 302] munmap(0x7ff42f60d000, 138412032) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 302] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 303 attached [pid 303] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 303] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 303] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 303] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 301] <... futex resumed>) = 0 [pid 301] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 301] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... futex resumed>) = 1 [pid 303] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 303] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 301] <... futex resumed>) = 0 [pid 301] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 301] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 301] <... futex resumed>) = 0 [pid 301] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 301] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 303] <... futex resumed>) = 1 [pid 303] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 7 [pid 303] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 301] <... futex resumed>) = 0 [pid 303] <... futex resumed>) = 1 [pid 303] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] <... ioctl resumed>) = 0 [pid 302] close(4) = 0 [pid 302] close(5) = 0 [pid 302] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 302] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 302] ioctl(4, LOOP_CLR_FD) = 0 [pid 302] close(4) = 0 [pid 302] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 301] exit_group(0) = ? [pid 303] <... futex resumed>) = ? [pid 303] +++ exited with 0 +++ [pid 302] <... futex resumed>) = ? [pid 302] +++ exited with 0 +++ [pid 301] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=301, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [ 24.427573][ T302] loop0: detected capacity change from 0 to 512 restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 305 ./strace-static-x86_64: Process 305 attached [pid 305] set_robust_list(0x5555900c96a0, 24) = 0 [pid 305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 305] setpgid(0, 0) = 0 [pid 305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 305] write(3, "1000", 4) = 4 [pid 305] close(3) = 0 [pid 305] write(1, "executing program\n", 18executing program ) = 18 [pid 305] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 305] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 305] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[306]}, 88) = 306 [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 305] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 306 attached [pid 306] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] creat("./bus", 000) = 3 [pid 306] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 305] <... futex resumed>) = 0 [pid 305] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 305] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[308]}, 88) = 308 [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 305] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 308 attached [pid 308] set_robust_list(0x7ff437a2d9a0, 24 [pid 306] memfd_create("syzkaller", 0) = 4 [pid 306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 308] <... set_robust_list resumed>) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 306] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 308] <... mount resumed>) = 0 [pid 308] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 305] <... futex resumed>) = 0 [pid 305] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 308] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... write resumed>) = 262144 [pid 308] <... futex resumed>) = 1 [pid 305] <... futex resumed>) = 0 [pid 308] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... futex resumed>) = 0 [pid 308] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 305] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... mmap resumed>) = 0x400000000000 [pid 306] munmap(0x7ff42f60d000, 138412032 [pid 308] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 305] <... futex resumed>) = 0 [pid 308] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 308] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 305] <... futex resumed>) = 0 [pid 306] <... munmap resumed>) = ? [pid 306] +++ killed by SIGBUS +++ [pid 308] +++ killed by SIGBUS +++ [pid 305] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=305, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 309 ./strace-static-x86_64: Process 309 attached [pid 309] set_robust_list(0x5555900c96a0, 24) = 0 [pid 309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 309] setpgid(0, 0) = 0 [pid 309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 309] write(3, "1000", 4) = 4 [pid 309] close(3) = 0 [pid 309] write(1, "executing program\n", 18executing program ) = 18 [pid 309] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 309] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 309] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 309] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 310 attached => {parent_tid=[310]}, 88) = 310 [pid 310] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 310] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 309] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 310] <... futex resumed>) = 0 [pid 310] creat("./bus", 000) = 3 [pid 310] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 310] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 309] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 310] <... futex resumed>) = 0 [pid 310] memfd_create("syzkaller", 0 [pid 309] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... memfd_create resumed>) = 4 [pid 309] <... futex resumed>) = 0 [pid 310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 309] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 309] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 309] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0} [pid 310] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 309] <... clone3 resumed> => {parent_tid=[311]}, 88) = 311 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 309] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 309] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 311 attached [pid 310] <... write resumed>) = 262144 [pid 310] munmap(0x7ff42f62e000, 138412032 [pid 311] set_robust_list(0x7ff42f62d9a0, 24) = 0 [pid 310] <... munmap resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [], [pid 310] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 310] <... openat resumed>) = 5 [pid 311] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 310] ioctl(5, LOOP_SET_FD, 4 [pid 311] <... mount resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 311] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] close(4 [pid 311] <... futex resumed>) = 1 [pid 310] <... close resumed>) = 0 [pid 311] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] close(5 [pid 309] <... futex resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 310] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 310] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 309] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 309] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... futex resumed>) = 0 [pid 311] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 311] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 311] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 309] <... futex resumed>) = 0 [pid 309] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... futex resumed>) = 0 [pid 311] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 309] <... futex resumed>) = 1 [pid 309] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 311] <... mmap resumed>) = 0x400000000000 [pid 311] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 309] <... futex resumed>) = 0 [pid 309] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 309] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 311] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 311] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... futex resumed>) = 0 [pid 311] <... futex resumed>) = 1 [ 24.550206][ T310] loop0: detected capacity change from 0 to 512 [ 24.557621][ T310] EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! [ 24.570759][ T310] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 24.580890][ T310] ================================================================================ [ 24.590206][ T310] UBSAN: shift-out-of-bounds in fs/ext4/super.c:4424:27 [ 24.597594][ T310] shift exponent 807429217 is too large for 32-bit type 'int' [ 24.604978][ T310] CPU: 1 PID: 310 Comm: syz-executor316 Not tainted 5.15.178-syzkaller-00013-g7d1f9b5c2ff5 #0 [ 24.615114][ T310] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 24.625015][ T310] Call Trace: [ 24.628127][ T310] [ 24.630905][ T310] dump_stack_lvl+0x151/0x1c0 [ 24.635416][ T310] ? io_uring_drop_tctx_refs+0x190/0x190 [ 24.640886][ T310] dump_stack+0x15/0x20 [ 24.644880][ T310] __ubsan_handle_shift_out_of_bounds+0x3bf/0x420 [ 24.651144][ T310] ? ext4_max_size+0xa3/0x120 [ 24.655640][ T310] ext4_fill_super+0x7491/0x96e0 [ 24.660419][ T310] ? ext4_mount+0x40/0x40 [ 24.664782][ T310] ? vscnprintf+0x80/0x80 [ 24.668948][ T310] ? set_blocksize+0x1f0/0x380 [ 24.673552][ T310] ? sb_set_blocksize+0xa8/0xf0 [ 24.678236][ T310] mount_bdev+0x282/0x3b0 [ 24.682400][ T310] ? ext4_mount+0x40/0x40 [ 24.686568][ T310] ext4_mount+0x34/0x40 [ 24.690561][ T310] legacy_get_tree+0xf1/0x190 [ 24.695073][ T310] ? ext4_errno_to_code+0x140/0x140 [pid 311] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 309] exit_group(0 [pid 311] <... futex resumed>) = ? [pid 309] <... exit_group resumed>) = ? [pid 311] +++ exited with 0 +++ [ 24.700112][ T310] vfs_get_tree+0x88/0x290 [ 24.704362][ T310] do_new_mount+0x2ba/0xb30 [ 24.708704][ T310] ? do_move_mount_old+0x160/0x160 [ 24.713650][ T310] ? security_capable+0x87/0xb0 [ 24.718336][ T310] ? ns_capable+0x89/0xe0 [ 24.722498][ T310] path_mount+0x671/0x1070 [ 24.726753][ T310] __se_sys_mount+0x2c4/0x3b0 [ 24.731265][ T310] ? __x64_sys_mount+0xd0/0xd0 [ 24.736013][ T310] ? __kasan_check_write+0x14/0x20 [ 24.740954][ T310] __x64_sys_mount+0xbf/0xd0 [ 24.745381][ T310] x64_sys_call+0x49d/0x9a0 [ 24.749717][ T310] do_syscall_64+0x3b/0xb0 [ 24.753972][ T310] ? clear_bhb_loop+0x35/0x90 [ 24.758483][ T310] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 24.764226][ T310] RIP: 0033:0x7ff437a92e2a [ 24.768464][ T310] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 24.787908][ T310] RSP: 002b:00007ff437a4e088 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 24.796151][ T310] RAX: ffffffffffffffda RBX: 00007ff437a4e0a0 RCX: 00007ff437a92e2a [ 24.803968][ T310] RDX: 0000400000000040 RSI: 0000400000000000 RDI: 00007ff437a4e0a0 [ 24.811779][ T310] RBP: 0000400000000000 R08: 00007ff437a4e0e0 R09: 00007ff437a4e0e0 [ 24.819584][ T310] R10: 000000000200010e R11: 0000000000000246 R12: 0000400000000040 [ 24.827398][ T310] R13: 00007ff437a4e0e0 R14: 0000000000000004 R15: 000000000200010e [ 24.835215][ T310] [ 24.839611][ T310] ================================================================================ [pid 310] <... mount resumed>) = ? [pid 310] +++ exited with 0 +++ [pid 309] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=309, si_uid=0, si_status=0, si_utime=0, si_stime=12} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 24.848750][ T310] EXT4-fs (loop0): fragment/cluster size (2048) != block size (1024) openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 312 ./strace-static-x86_64: Process 312 attached [pid 312] set_robust_list(0x5555900c96a0, 24) = 0 [pid 312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 312] setpgid(0, 0) = 0 [pid 312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 312] write(3, "1000", 4) = 4 [pid 312] close(3) = 0 [pid 312] write(1, "executing program\n", 18executing program ) = 18 [pid 312] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 312] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 312] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 312] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 312] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[313]}, 88) = 313 [pid 312] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 312] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 313 attached [pid 313] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 313] creat("./bus", 000) = 3 [pid 313] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = 0 [pid 312] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 312] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 312] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 312] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[314]}, 88) = 314 [pid 312] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 312] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 313] <... futex resumed>) = 1 [pid 313] memfd_create("syzkaller", 0) = 4 [pid 313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 314 attached [pid 314] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 314] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 314] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 314] <... futex resumed>) = 1 [pid 312] <... futex resumed>) = 0 [pid 312] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 314] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 314] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = 0 [pid 312] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] <... write resumed>) = 262144 [pid 312] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 313] munmap(0x7ff42f60d000, 138412032 [pid 314] <... futex resumed>) = 1 [pid 314] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 312] <... futex resumed>) = 0 [pid 312] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 314] <... futex resumed>) = 1 [pid 314] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 312] <... futex resumed>) = ? [pid 313] <... munmap resumed>) = ? [pid 314] +++ killed by SIGBUS +++ [pid 313] +++ killed by SIGBUS +++ [pid 312] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=312, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 315 ./strace-static-x86_64: Process 315 attached [pid 315] set_robust_list(0x5555900c96a0, 24) = 0 [pid 315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 315] setpgid(0, 0) = 0 [pid 315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 315] write(3, "1000", 4) = 4 [pid 315] close(3) = 0 [pid 315] write(1, "executing program\n", 18executing program ) = 18 [pid 315] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 315] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 315] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 315] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 315] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 316 attached [pid 316] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 316] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 316] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... clone3 resumed> => {parent_tid=[316]}, 88) = 316 [pid 315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 315] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 316] <... futex resumed>) = 0 [pid 316] creat("./bus", 000) = 3 [pid 315] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 316] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] memfd_create("syzkaller", 0 [pid 315] <... futex resumed>) = 0 [pid 315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 316] <... memfd_create resumed>) = 4 [pid 316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 315] <... mmap resumed>) = 0x7ff437a0d000 [pid 316] <... mmap resumed>) = 0x7ff42f60d000 [pid 315] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 316] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 315] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 315] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 317 attached [pid 317] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 317] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 317] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... clone3 resumed> => {parent_tid=[317]}, 88) = 317 [pid 316] <... write resumed>) = 262144 [pid 316] munmap(0x7ff42f60d000, 138412032 [pid 315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 316] <... munmap resumed>) = 0 [pid 316] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 315] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 317] <... futex resumed>) = 0 [pid 316] <... openat resumed>) = 5 [pid 317] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 315] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] ioctl(5, LOOP_SET_FD, 4 [pid 317] <... mount resumed>) = 0 [pid 317] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 317] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 316] <... ioctl resumed>) = 0 [pid 315] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] close(4) = 0 [pid 316] close(5 [pid 317] <... futex resumed>) = 0 [pid 315] <... futex resumed>) = 1 [pid 317] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 317] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 316] <... close resumed>) = 0 [pid 316] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 316] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 315] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] <... mount resumed>) = -1 ENODEV (No such device) [pid 315] <... futex resumed>) = 1 [pid 317] <... futex resumed>) = 0 [pid 317] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 315] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 316] ioctl(5, LOOP_CLR_FD) = 0 [pid 316] close(5) = 0 [pid 317] <... mmap resumed>) = 0x400000000000 [pid 316] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 316] <... futex resumed>) = 0 [pid 317] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 316] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 315] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 316] <... futex resumed>) = 0 [pid 316] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 316] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] exit_group(0) = ? [pid 317] <... futex resumed>) = ? [pid 317] +++ exited with 0 +++ [pid 316] <... futex resumed>) = ? [pid 316] +++ exited with 0 +++ [pid 315] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=315, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 25.093427][ T316] loop0: detected capacity change from 0 to 512 [ 25.103930][ T316] request_module fs- succeeded, but still no fs? openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 318 ./strace-static-x86_64: Process 318 attached [pid 318] set_robust_list(0x5555900c96a0, 24) = 0 [pid 318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 318] setpgid(0, 0) = 0 [pid 318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 318] write(3, "1000", 4) = 4 [pid 318] close(3) = 0 [pid 318] write(1, "executing program\n", 18) = 18 [pid 318] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 318] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[319]}, 88) = 319 [pid 318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 318] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 319 attached [pid 319] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 319] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 319] creat("./bus", 000) = 3 [pid 319] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 318] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[320]}, 88) = 320 [pid 318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 318] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] <... futex resumed>) = 1 [pid 319] memfd_create("syzkaller", 0) = 4 [pid 319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 319] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 319] munmap(0x7ff42f60d000, 138412032) = 0 [pid 319] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 319] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 320 attached ) = 0 [pid 320] set_robust_list(0x7ff437a2d9a0, 24 [pid 319] close(4 [pid 320] <... set_robust_list resumed>) = 0 [pid 319] <... close resumed>) = 0 [pid 320] rt_sigprocmask(SIG_SETMASK, [], [pid 319] close(5 [pid 320] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 320] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 319] <... close resumed>) = 0 [pid 320] <... mount resumed>) = 0 [pid 320] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] mkdir("./bus", 0777 [pid 320] <... futex resumed>) = 1 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 320] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 319] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 318] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] <... open resumed>) = 4 [pid 320] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 319] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 319] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 319] ioctl(5, LOOP_CLR_FD) = 0 [pid 319] close(5 [pid 320] <... mmap resumed>) = 0x400000000000 [pid 319] <... close resumed>) = 0 [pid 320] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 319] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 320] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] <... futex resumed>) = 0 [pid 319] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 319] <... bpf resumed>) = 5 [pid 319] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 318] <... futex resumed>) = 0 [pid 319] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] exit_group(0) = ? [pid 320] <... futex resumed>) = ? [pid 320] +++ exited with 0 +++ [pid 319] <... futex resumed>) = ? [pid 319] +++ exited with 0 +++ [pid 318] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=318, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 321 ./strace-static-x86_64: Process 321 attached [ 25.180682][ T319] loop0: detected capacity change from 0 to 512 [pid 321] set_robust_list(0x5555900c96a0, 24) = 0 [pid 321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 321] setpgid(0, 0) = 0 [pid 321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 321] write(3, "1000", 4) = 4 [pid 321] close(3) = 0 [pid 321] write(1, "executing program\n", 18executing program ) = 18 [pid 321] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 321] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 321] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 321] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 321] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 321] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 322 attached => {parent_tid=[322]}, 88) = 322 [pid 322] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 322] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 322] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 321] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 321] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 322] <... futex resumed>) = 0 [pid 322] creat("./bus", 000) = 3 [pid 322] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 322] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 321] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 322] <... futex resumed>) = 0 [pid 322] memfd_create("syzkaller", 0) = 4 [pid 322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 321] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 321] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 322] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 321] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 321] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0}./strace-static-x86_64: Process 323 attached [pid 322] <... write resumed>) = 262144 [pid 322] munmap(0x7ff42f62e000, 138412032 [pid 321] <... clone3 resumed> => {parent_tid=[323]}, 88) = 323 [pid 323] set_robust_list(0x7ff42f62d9a0, 24 [pid 322] <... munmap resumed>) = 0 [pid 322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 322] ioctl(5, LOOP_SET_FD, 4 [pid 323] <... set_robust_list resumed>) = 0 [pid 321] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 321] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 321] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 323] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 322] <... ioctl resumed>) = 0 [pid 323] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 322] close(4) = 0 [pid 323] <... mount resumed>) = 0 [pid 323] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... futex resumed>) = 0 [pid 321] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 321] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 323] <... futex resumed>) = 1 [pid 323] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 322] close(5 [pid 323] <... open resumed>) = 4 [pid 323] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... futex resumed>) = 0 [pid 321] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 321] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 323] <... futex resumed>) = 1 [pid 323] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 321] <... futex resumed>) = 0 [pid 321] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 321] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 323] <... futex resumed>) = 1 [pid 323] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 323] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... futex resumed>) = 0 [pid 322] <... close resumed>) = 0 [pid 323] <... futex resumed>) = 1 [pid 323] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 322] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 322] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 322] ioctl(6, LOOP_CLR_FD) = 0 [pid 322] close(6) = 0 [pid 322] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 322] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 321] exit_group(0) = ? [pid 323] <... futex resumed>) = ? [pid 323] +++ exited with 0 +++ [pid 322] <... futex resumed>) = ? [pid 322] +++ exited with 0 +++ [pid 321] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=321, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 25.256343][ T322] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 324 ./strace-static-x86_64: Process 324 attached [pid 324] set_robust_list(0x5555900c96a0, 24) = 0 [pid 324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 324] setpgid(0, 0) = 0 [pid 324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 324] write(3, "1000", 4) = 4 [pid 324] close(3) = 0 [pid 324] write(1, "executing program\n", 18executing program ) = 18 [pid 324] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 324] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 324] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 324] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 324] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[325]}, 88) = 325 [pid 324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 324] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 325 attached [pid 325] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 325] creat("./bus", 000) = 3 [pid 325] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 324] <... futex resumed>) = 0 [pid 324] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 324] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 324] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 324] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[326]}, 88) = 326 [pid 324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 324] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] <... futex resumed>) = 1 [pid 325] memfd_create("syzkaller", 0) = 4 [pid 325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 325] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 325] munmap(0x7ff42f60d000, 138412032) = 0 [pid 325] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 325] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 326 attached [pid 326] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 326] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 326] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 326] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 324] <... futex resumed>) = 0 [pid 324] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 324] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] <... futex resumed>) = 0 [pid 326] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 325] <... ioctl resumed>) = 0 [pid 326] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 324] <... futex resumed>) = 0 [pid 324] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] <... futex resumed>) = 1 [pid 326] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 325] close(4) = 0 [pid 325] close(5) = 0 [pid 325] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 325] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 325] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 325] ioctl(4, LOOP_CLR_FD) = 0 [pid 325] close(4) = 0 [pid 325] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 325] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 326] <... mmap resumed>) = 0x400000000000 [pid 326] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 324] <... futex resumed>) = 0 [pid 324] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 324] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 325] <... futex resumed>) = 0 [pid 325] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 325] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 324] <... futex resumed>) = 0 [pid 324] exit_group(0) = ? [pid 325] +++ exited with 0 +++ [pid 326] +++ exited with 0 +++ [pid 324] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=324, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 328 ./strace-static-x86_64: Process 328 attached [pid 328] set_robust_list(0x5555900c96a0, 24) = 0 [pid 328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 328] setpgid(0, 0) = 0 [pid 328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 328] write(3, "1000", 4) = 4 [pid 328] close(3) = 0 [pid 328] write(1, "executing program\n", 18executing program ) = 18 [pid 328] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 328] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[329]}, 88) = 329 [pid 328] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 328] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 329 attached [pid 329] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 329] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 329] creat("./bus", 000) = 3 [pid 329] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 328] <... futex resumed>) = 0 [pid 328] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 328] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 329] <... futex resumed>) = 1 [pid 328] <... clone3 resumed> => {parent_tid=[330]}, 88) = 330 [pid 328] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 328] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 330 attached [ 25.336758][ T325] loop0: detected capacity change from 0 to 512 [pid 330] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 330] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 330] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 330] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 328] <... futex resumed>) = 0 [pid 328] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 330] <... futex resumed>) = 1 [pid 330] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 330] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 328] <... futex resumed>) = 0 [pid 328] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 330] <... futex resumed>) = 1 [pid 330] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 328] <... futex resumed>) = 0 [pid 328] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 330] <... futex resumed>) = 1 [pid 330] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 328] <... futex resumed>) = ? [pid 329] +++ killed by SIGBUS +++ [pid 330] +++ killed by SIGBUS +++ [pid 328] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=328, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 331 ./strace-static-x86_64: Process 331 attached [pid 331] set_robust_list(0x5555900c96a0, 24) = 0 [pid 331] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 331] setpgid(0, 0) = 0 [pid 331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ) = 3 [pid 331] write(3, "1000", 4) = 4 [pid 331] close(3) = 0 [pid 331] write(1, "executing program\n", 18) = 18 [pid 331] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 331] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 331] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 331] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 331] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 331] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[332]}, 88) = 332 [pid 331] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 331] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 332 attached [pid 332] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 332] creat("./bus", 000) = 3 [pid 332] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 331] <... futex resumed>) = 0 [pid 331] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 331] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 331] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 331] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[333]}, 88) = 333 [pid 331] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 331] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] <... futex resumed>) = 1 [pid 332] memfd_create("syzkaller", 0) = 4 [pid 332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 332] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 333 attached ) = 262144 [pid 332] munmap(0x7ff42f60d000, 138412032 [pid 333] set_robust_list(0x7ff437a2d9a0, 24 [pid 332] <... munmap resumed>) = 0 [pid 332] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 332] ioctl(5, LOOP_SET_FD, 4 [pid 333] <... set_robust_list resumed>) = 0 [pid 333] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 333] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 333] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 331] <... futex resumed>) = 0 [pid 331] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 333] <... futex resumed>) = 1 [pid 333] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 332] <... ioctl resumed>) = 0 [pid 333] <... open resumed>) = 6 [pid 332] close(4 [pid 333] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 332] <... close resumed>) = 0 [pid 332] close(5) = 0 [pid 332] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 332] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 332] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 332] ioctl(4, LOOP_CLR_FD) = 0 [pid 332] close(4) = 0 [pid 332] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 332] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 331] <... futex resumed>) = 0 [pid 331] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 331] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] <... futex resumed>) = 0 [pid 332] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 333] <... futex resumed>) = 1 [pid 333] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 332] <... mmap resumed>) = 0x400000000000 [pid 332] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 331] <... futex resumed>) = 0 [pid 331] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 332] <... futex resumed>) = 1 [pid 332] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 332] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 331] <... futex resumed>) = 0 [pid 331] exit_group(0) = ? [pid 333] <... futex resumed>) = ? [pid 333] +++ exited with 0 +++ [pid 332] <... futex resumed>) = ? [pid 332] +++ exited with 0 +++ [pid 331] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=331, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 25.416129][ T332] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 334 ./strace-static-x86_64: Process 334 attached [pid 334] set_robust_list(0x5555900c96a0, 24) = 0 [pid 334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 334] setpgid(0, 0) = 0 [pid 334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 334] write(3, "1000", 4) = 4 [pid 334] close(3) = 0 [pid 334] write(1, "executing program\n", 18executing program ) = 18 [pid 334] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 334] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[335]}, 88) = 335 [pid 334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 334] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 335 attached [pid 335] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 335] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 335] creat("./bus", 000) = 3 [pid 335] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... futex resumed>) = 0 [pid 334] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 334] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[336]}, 88) = 336 [pid 334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 334] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 335] <... futex resumed>) = 1 [pid 335] memfd_create("syzkaller", 0) = 4 [pid 335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 335] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 336 attached [pid 336] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 336] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 336] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 335] <... write resumed>) = 262144 [pid 336] <... mount resumed>) = 0 [pid 335] munmap(0x7ff42f60d000, 138412032 [pid 336] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 335] <... munmap resumed>) = 0 [pid 336] <... futex resumed>) = 1 [pid 336] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 335] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 335] ioctl(5, LOOP_SET_FD, 4 [pid 334] <... futex resumed>) = 0 [pid 334] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 336] <... futex resumed>) = 0 [pid 336] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 335] <... ioctl resumed>) = 0 [pid 336] <... open resumed>) = 6 [pid 335] close(4 [pid 336] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 335] <... close resumed>) = 0 [pid 336] <... futex resumed>) = 1 [pid 335] close(5 [pid 336] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 335] <... close resumed>) = 0 [pid 334] <... futex resumed>) = 0 [pid 334] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 336] <... futex resumed>) = 0 [pid 336] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 335] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 335] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 335] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 335] ioctl(4, LOOP_CLR_FD) = 0 [pid 335] close(4) = 0 [pid 335] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 336] <... mmap resumed>) = 0x400000000000 [pid 336] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... futex resumed>) = 0 [pid 334] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 335] <... futex resumed>) = 0 [pid 335] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 335] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... futex resumed>) = 0 [pid 334] exit_group(0) = ? [pid 335] <... futex resumed>) = ? [pid 335] +++ exited with 0 +++ [pid 336] <... futex resumed>) = ? [pid 336] +++ exited with 0 +++ [pid 334] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=334, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 337 ./strace-static-x86_64: Process 337 attached [pid 337] set_robust_list(0x5555900c96a0, 24) = 0 [pid 337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 337] setpgid(0, 0) = 0 [pid 337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 337] write(3, "1000", 4) = 4 [pid 337] close(3) = 0 [pid 337] write(1, "executing program\n", 18executing program ) = 18 [pid 337] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 337] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 337] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 337] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 337] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[338]}, 88) = 338 [pid 337] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 337] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 338 attached [pid 338] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 338] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 338] creat("./bus", 000) = 3 [pid 338] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 337] <... futex resumed>) = 0 [pid 338] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 337] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 337] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] <... futex resumed>) = 0 [pid 337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 337] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 338] memfd_create("syzkaller", 0 [pid 337] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 337] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 338] <... memfd_create resumed>) = 4 [pid 338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 337] <... clone3 resumed> => {parent_tid=[339]}, 88) = 339 ./strace-static-x86_64: Process 339 attached [pid 337] rt_sigprocmask(SIG_SETMASK, [], [pid 339] set_robust_list(0x7ff437a2d9a0, 24 [pid 337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 339] <... set_robust_list resumed>) = 0 [pid 337] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 339] rt_sigprocmask(SIG_SETMASK, [], [pid 337] <... futex resumed>) = 0 [pid 339] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 338] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 337] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 339] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 339] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... futex resumed>) = 0 [ 25.508374][ T335] loop0: detected capacity change from 0 to 512 [pid 339] <... futex resumed>) = 1 [pid 337] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 339] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 338] <... write resumed>) = 262144 [pid 338] munmap(0x7ff42f60d000, 138412032) = 0 [pid 338] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 338] ioctl(5, LOOP_SET_FD, 4 [pid 337] <... futex resumed>) = 0 [pid 339] <... open resumed>) = 6 [pid 337] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 339] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... ioctl resumed>) = 0 [pid 337] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 337] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 339] <... futex resumed>) = 1 [pid 337] <... futex resumed>) = 0 [pid 339] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 337] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 338] close(4) = 0 [pid 338] close(5 [pid 339] <... mmap resumed>) = 0x400000000000 [pid 338] <... close resumed>) = 0 [pid 339] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 339] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 338] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 338] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 338] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 338] ioctl(4, LOOP_CLR_FD) = 0 [pid 338] close(4) = 0 [pid 338] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 337] <... futex resumed>) = 0 [pid 337] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 337] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 338] <... futex resumed>) = 0 [pid 338] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 338] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... futex resumed>) = 0 [pid 337] exit_group(0 [pid 339] <... futex resumed>) = ? [pid 337] <... exit_group resumed>) = ? [pid 339] +++ exited with 0 +++ [pid 338] <... futex resumed>) = ? [pid 338] +++ exited with 0 +++ [pid 337] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=337, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 25.570099][ T338] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 340 ./strace-static-x86_64: Process 340 attached [pid 340] set_robust_list(0x5555900c96a0, 24) = 0 [pid 340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 340] setpgid(0, 0) = 0 [pid 340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 340] write(3, "1000", 4) = 4 [pid 340] close(3) = 0 [pid 340] write(1, "executing program\n", 18executing program ) = 18 [pid 340] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 340] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[341]}, 88) = 341 [pid 340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 340] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 341 attached [pid 341] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 341] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 341] creat("./bus", 000) = 3 [pid 341] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 340] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[342]}, 88) = 342 [pid 340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 340] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... futex resumed>) = 1 [pid 341] memfd_create("syzkaller", 0) = 4 [pid 341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 341] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 341] munmap(0x7ff42f60d000, 138412032./strace-static-x86_64: Process 342 attached [pid 342] set_robust_list(0x7ff437a2d9a0, 24 [pid 341] <... munmap resumed>) = 0 [pid 342] <... set_robust_list resumed>) = 0 [pid 342] rt_sigprocmask(SIG_SETMASK, [], [pid 341] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 342] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 342] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 341] <... openat resumed>) = 5 [pid 342] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 342] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 342] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 342] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 342] <... futex resumed>) = 1 [pid 342] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 340] <... futex resumed>) = ? [pid 342] +++ killed by SIGBUS +++ [pid 341] +++ killed by SIGBUS +++ [pid 340] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=340, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 343 ./strace-static-x86_64: Process 343 attached [pid 343] set_robust_list(0x5555900c96a0, 24) = 0 [pid 343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 343] setpgid(0, 0) = 0 [pid 343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 343] write(3, "1000", 4) = 4 executing program [pid 343] close(3) = 0 [pid 343] write(1, "executing program\n", 18) = 18 [pid 343] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 343] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 343] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 343] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 343] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[344]}, 88) = 344 [pid 343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 343] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 344 attached [pid 344] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 344] creat("./bus", 000) = 3 [pid 344] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 343] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 343] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 343] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[345]}, 88) = 345 [pid 343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 343] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] <... futex resumed>) = 1 [pid 344] memfd_create("syzkaller", 0) = 4 [pid 344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 344] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 344] munmap(0x7ff42f60d000, 138412032) = 0 [pid 344] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 344] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 345 attached [pid 345] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 345] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 345] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 344] <... ioctl resumed>) = 0 [pid 344] close(4 [pid 345] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... close resumed>) = 0 [pid 345] <... futex resumed>) = 1 [pid 343] <... futex resumed>) = 0 [pid 344] close(5 [pid 343] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 345] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 344] <... close resumed>) = 0 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] mkdir("./bus", 0777 [pid 345] <... open resumed>) = 4 [pid 345] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 344] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 344] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 345] <... futex resumed>) = 1 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] <... openat resumed>) = 5 [pid 344] ioctl(5, LOOP_CLR_FD) = 0 [pid 344] close(5) = 0 [pid 344] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 345] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 343] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 345] <... futex resumed>) = 1 [pid 344] <... futex resumed>) = 0 [pid 345] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 344] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 344] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 343] <... futex resumed>) = 0 [pid 344] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 343] exit_group(0) = ? [pid 345] <... futex resumed>) = 231 [pid 344] <... futex resumed>) = ? [pid 344] +++ exited with 0 +++ [pid 345] +++ exited with 0 +++ [pid 343] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=343, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 346 ./strace-static-x86_64: Process 346 attached [pid 346] set_robust_list(0x5555900c96a0, 24) = 0 [pid 346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 346] setpgid(0, 0) = 0 [pid 346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 346] write(3, "1000", 4) = 4 [ 25.683127][ T344] loop0: detected capacity change from 0 to 512 [pid 346] close(3) = 0 [pid 346] write(1, "executing program\n", 18executing program ) = 18 [pid 346] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 346] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 346] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 346] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 346] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 347 attached => {parent_tid=[347]}, 88) = 347 [pid 346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 346] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 347] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 347] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 347] creat("./bus", 000) = 3 [pid 347] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 346] <... futex resumed>) = 0 [pid 346] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 346] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 346] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 346] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[348]}, 88) = 348 [pid 346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 346] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 348 attached [pid 348] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 348] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 348] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 348] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 346] <... futex resumed>) = 0 [pid 346] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 1 [pid 348] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 348] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 346] <... futex resumed>) = 0 [pid 346] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 1 [pid 348] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 346] <... futex resumed>) = 0 [pid 347] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000040} --- [pid 346] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 348] <... futex resumed>) = 1 [pid 348] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 346] <... futex resumed>) = ? [pid 348] +++ killed by SIGBUS +++ [pid 347] +++ killed by SIGBUS +++ [pid 346] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=346, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 349 ./strace-static-x86_64: Process 349 attached [pid 349] set_robust_list(0x5555900c96a0, 24) = 0 [pid 349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 349] setpgid(0, 0) = 0 [pid 349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 349] write(3, "1000", 4) = 4 [pid 349] close(3) = 0 executing program [pid 349] write(1, "executing program\n", 18) = 18 [pid 349] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 349] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 349] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 349] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 349] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 349] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[350]}, 88) = 350 [pid 349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 349] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 350 attached [pid 350] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 350] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 350] creat("./bus", 000) = 3 [pid 350] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 349] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 349] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 349] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[351]}, 88) = 351 [pid 349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 349] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] memfd_create("syzkaller", 0) = 4 [pid 350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 351 attached [pid 350] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 351] set_robust_list(0x7ff437a2d9a0, 24 [pid 350] <... write resumed>) = 262144 [pid 351] <... set_robust_list resumed>) = 0 [pid 350] munmap(0x7ff42f60d000, 138412032 [pid 351] rt_sigprocmask(SIG_SETMASK, [], [pid 350] <... munmap resumed>) = 0 [pid 351] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 350] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 351] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 350] <... openat resumed>) = 5 [pid 350] ioctl(5, LOOP_SET_FD, 4 [pid 351] <... mount resumed>) = 0 [pid 351] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 351] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 349] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] <... futex resumed>) = 0 [pid 351] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 350] <... ioctl resumed>) = 0 [pid 351] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] close(4 [pid 351] <... futex resumed>) = 1 [pid 350] <... close resumed>) = 0 [pid 351] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] close(5 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 349] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... close resumed>) = 0 [pid 350] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 350] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 350] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 350] ioctl(4, LOOP_CLR_FD) = 0 [pid 350] close(4) = 0 [pid 350] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 351] <... futex resumed>) = 0 [pid 351] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 349] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 350] <... futex resumed>) = 0 [pid 350] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 350] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] exit_group(0) = ? [pid 350] <... futex resumed>) = ? [pid 350] +++ exited with 0 +++ [pid 351] <... futex resumed>) = ? [pid 351] +++ exited with 0 +++ [pid 349] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=349, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 352 ./strace-static-x86_64: Process 352 attached [pid 352] set_robust_list(0x5555900c96a0, 24) = 0 [pid 352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 352] setpgid(0, 0) = 0 [pid 352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 352] write(3, "1000", 4) = 4 [pid 352] close(3) = 0 executing program [pid 352] write(1, "executing program\n", 18) = 18 [pid 352] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 352] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 352] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 352] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 352] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[353]}, 88) = 353 [pid 352] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 352] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 353 attached [pid 353] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 353] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 353] creat("./bus", 000) = 3 [pid 353] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 352] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 352] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 352] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[354]}, 88) = 354 [pid 352] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 352] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [ 25.773324][ T350] loop0: detected capacity change from 0 to 512 ./strace-static-x86_64: Process 354 attached [pid 354] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 353] memfd_create("syzkaller", 0 [pid 354] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 353] <... memfd_create resumed>) = 4 [pid 353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 354] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 354] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 353] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 354] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 354] <... futex resumed>) = 1 [pid 352] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... mmap resumed>) = 0x400000000000 [pid 353] <... write resumed>) = 262144 [pid 353] munmap(0x7ff42f60d000, 138412032 [pid 354] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... munmap resumed>) = 0 [pid 353] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 353] ioctl(6, LOOP_SET_FD, 4 [pid 354] <... futex resumed>) = 1 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 353] <... ioctl resumed>) = 0 [pid 353] close(4) = 0 [pid 353] close(6 [pid 354] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 353] <... close resumed>) = 0 [pid 353] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 353] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 353] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 353] ioctl(4, LOOP_CLR_FD) = 0 [pid 353] close(4) = 0 [pid 353] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 354] <... bpf resumed>) = 4 [pid 354] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] exit_group(0 [pid 353] <... futex resumed>) = ? [pid 352] <... exit_group resumed>) = ? [pid 353] +++ exited with 0 +++ [pid 354] <... futex resumed>) = ? [pid 354] +++ exited with 0 +++ [pid 352] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=352, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 25.839037][ T353] loop0: detected capacity change from 0 to 512 [ 25.840307][ T354] blk_update_request: I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 12 prio class 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 355 ./strace-static-x86_64: Process 355 attached [pid 355] set_robust_list(0x5555900c96a0, 24) = 0 [pid 355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 355] setpgid(0, 0) = 0 [pid 355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 355] write(3, "1000", 4) = 4 [pid 355] close(3) = 0 [pid 355] write(1, "executing program\n", 18executing program ) = 18 [pid 355] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 355] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 355] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 355] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[356]}, 88) = 356 [pid 355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 355] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 356 attached [pid 356] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 356] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 356] creat("./bus", 000) = 3 [pid 356] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 355] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 355] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[357]}, 88) = 357 [pid 355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 355] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] memfd_create("syzkaller", 0) = 4 [pid 356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x7ff437a2d9a0, 24 [pid 356] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 357] <... set_robust_list resumed>) = 0 [pid 357] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 357] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 357] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 357] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 357] <... futex resumed>) = 0 [pid 355] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 357] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... futex resumed>) = 1 [pid 356] <... write resumed>) = 262144 [pid 357] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 356] munmap(0x7ff42f60d000, 138412032 [pid 357] <... mmap resumed>) = 0x400000000000 [pid 357] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 356] <... munmap resumed>) = 0 [pid 357] <... futex resumed>) = 1 [pid 355] <... futex resumed>) = 0 [pid 357] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 357] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = ? [pid 355] <... futex resumed>) = ? [pid 356] +++ killed by SIGBUS +++ [pid 357] +++ killed by SIGBUS +++ [pid 355] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=355, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 358 ./strace-static-x86_64: Process 358 attached [pid 358] set_robust_list(0x5555900c96a0, 24) = 0 [pid 358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 358] setpgid(0, 0) = 0 [pid 358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 358] write(3, "1000", 4) = 4 [pid 358] close(3) = 0 [pid 358] write(1, "executing program\n", 18executing program ) = 18 [pid 358] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 358] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 358] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 358] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 358] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[359]}, 88) = 359 [pid 358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 358] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 359 attached [pid 359] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 359] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 359] creat("./bus", 000) = 3 [pid 359] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 359] <... futex resumed>) = 1 [pid 358] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 358] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 358] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 359] memfd_create("syzkaller", 0./strace-static-x86_64: Process 360 attached [pid 358] <... clone3 resumed> => {parent_tid=[360]}, 88) = 360 [pid 358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 358] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 359] <... memfd_create resumed>) = 4 [pid 359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 360] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 360] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 360] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 359] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 360] <... mount resumed>) = 0 [pid 360] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 360] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 358] <... futex resumed>) = 0 [pid 359] <... write resumed>) = 262144 [pid 358] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] munmap(0x7ff42f60d000, 138412032) = 0 [pid 358] <... futex resumed>) = 1 [pid 359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 359] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... futex resumed>) = 0 [pid 358] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 360] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 359] <... ioctl resumed>) = 0 [pid 359] close(4 [pid 360] <... open resumed>) = 6 [pid 360] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 360] <... futex resumed>) = 1 [pid 360] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 359] <... close resumed>) = 0 [pid 359] close(5 [pid 360] <... mmap resumed>) = 0x400000000000 [pid 360] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 360] <... futex resumed>) = 1 [pid 360] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 360] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 360] <... futex resumed>) = 1 [pid 360] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] <... close resumed>) = 0 [pid 359] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 359] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 359] ioctl(5, LOOP_CLR_FD) = 0 [pid 359] close(5) = 0 [pid 359] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 359] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 358] exit_group(0) = ? [pid 360] <... futex resumed>) = ? [pid 360] +++ exited with 0 +++ [pid 359] <... futex resumed>) = ? [pid 359] +++ exited with 0 +++ [pid 358] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=358, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 25.941293][ T359] loop0: detected capacity change from 0 to 512 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 361 ./strace-static-x86_64: Process 361 attached [pid 361] set_robust_list(0x5555900c96a0, 24) = 0 [pid 361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 361] setpgid(0, 0) = 0 [pid 361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 361] write(3, "1000", 4) = 4 [pid 361] close(3) = 0 [pid 361] write(1, "executing program\n", 18executing program ) = 18 [pid 361] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 361] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 361] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 361] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 361] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 361] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 361] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[362]}, 88) = 362 [pid 361] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 361] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 361] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 362 attached [pid 362] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 362] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 362] creat("./bus", 000) = 3 [pid 362] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... futex resumed>) = 0 [pid 361] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 361] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 361] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 361] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 361] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 361] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[363]}, 88) = 363 [pid 361] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 361] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 361] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 362] <... futex resumed>) = 1 [pid 362] memfd_create("syzkaller", 0) = 4 [pid 362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 363 attached [pid 362] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 363] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 362] <... write resumed>) = 262144 [pid 362] munmap(0x7ff42f60d000, 138412032 [pid 363] rt_sigprocmask(SIG_SETMASK, [], [pid 362] <... munmap resumed>) = 0 [pid 363] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 362] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 363] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 362] <... openat resumed>) = 5 [pid 362] ioctl(5, LOOP_SET_FD, 4 [pid 363] <... mount resumed>) = 0 [pid 363] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 363] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] <... futex resumed>) = 0 [pid 361] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 361] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 0 [pid 363] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 362] <... ioctl resumed>) = 0 [pid 362] close(4) = 0 [pid 362] close(5 [pid 363] <... open resumed>) = 4 [pid 362] <... close resumed>) = 0 [pid 363] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] mkdir("./bus", 0777 [pid 363] <... futex resumed>) = 1 [pid 362] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 363] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 362] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 361] <... futex resumed>) = 0 [pid 361] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 363] <... futex resumed>) = 0 [pid 362] <... mount resumed>) = -1 ENODEV (No such device) [pid 363] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 362] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 361] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 362] <... openat resumed>) = 5 [pid 362] ioctl(5, LOOP_CLR_FD [pid 363] <... mmap resumed>) = 0x400000000000 [pid 362] <... ioctl resumed>) = 0 [pid 363] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] close(5 [pid 363] <... futex resumed>) = 1 [pid 361] <... futex resumed>) = 0 [pid 363] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 362] <... close resumed>) = 0 [pid 361] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 362] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... futex resumed>) = 0 [pid 363] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 362] <... futex resumed>) = 0 [pid 361] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 362] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 363] <... bpf resumed>) = 5 [pid 363] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... futex resumed>) = 0 [pid 363] <... futex resumed>) = 1 [pid 363] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] exit_group(0) = ? [pid 362] <... futex resumed>) = 231 [pid 363] <... futex resumed>) = ? [pid 362] +++ exited with 0 +++ [pid 363] +++ exited with 0 +++ [pid 361] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=361, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 26.066467][ T362] loop0: detected capacity change from 0 to 512 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 364 ./strace-static-x86_64: Process 364 attached [pid 364] set_robust_list(0x5555900c96a0, 24) = 0 [pid 364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 364] setpgid(0, 0) = 0 [pid 364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 364] write(3, "1000", 4) = 4 [pid 364] close(3) = 0 executing program [pid 364] write(1, "executing program\n", 18) = 18 [pid 364] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 364] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 364] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 364] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 364] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[365]}, 88) = 365 ./strace-static-x86_64: Process 365 attached [pid 364] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 364] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 365] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 365] creat("./bus", 000) = 3 [pid 365] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 364] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 364] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 364] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 365] memfd_create("syzkaller", 0 [pid 364] <... clone3 resumed> => {parent_tid=[366]}, 88) = 366 [pid 364] rt_sigprocmask(SIG_SETMASK, [], [pid 365] <... memfd_create resumed>) = 4 [pid 364] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 364] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 366 attached [pid 365] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 366] set_robust_list(0x7ff437a2d9a0, 24 [pid 365] <... write resumed>) = 262144 [pid 366] <... set_robust_list resumed>) = 0 [pid 366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 366] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 365] munmap(0x7ff42f60d000, 138412032 [pid 366] <... mount resumed>) = 0 [pid 365] <... munmap resumed>) = 0 [pid 365] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 365] ioctl(5, LOOP_SET_FD, 4 [pid 366] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 366] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 364] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 366] <... futex resumed>) = 0 [pid 366] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 365] <... ioctl resumed>) = 0 [pid 366] <... open resumed>) = 6 [pid 365] close(4) = 0 [pid 365] close(5) = 0 [pid 365] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 365] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 365] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 365] ioctl(4, LOOP_CLR_FD) = 0 [pid 365] close(4) = 0 [pid 365] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 365] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 366] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 366] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 364] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... futex resumed>) = 0 [pid 365] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 364] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 365] <... futex resumed>) = 0 [pid 365] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 365] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = 0 [pid 364] exit_group(0) = ? [pid 366] <... futex resumed>) = ? [pid 365] <... futex resumed>) = 231 [pid 366] +++ exited with 0 +++ [pid 365] +++ exited with 0 +++ [pid 364] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=364, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 367 ./strace-static-x86_64: Process 367 attached [pid 367] set_robust_list(0x5555900c96a0, 24) = 0 [pid 367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 367] setpgid(0, 0) = 0 executing program [pid 367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 367] write(3, "1000", 4) = 4 [pid 367] close(3) = 0 [pid 367] write(1, "executing program\n", 18) = 18 [pid 367] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 367] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 367] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 367] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 367] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[368]}, 88) = 368 [pid 367] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 367] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 368 attached [pid 368] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 368] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 368] creat("./bus", 000) = 3 [pid 368] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] <... futex resumed>) = 0 [pid 367] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 367] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 368] <... futex resumed>) = 1 [pid 367] rt_sigprocmask(SIG_BLOCK, ~[], [pid 368] memfd_create("syzkaller", 0) = 4 [pid 368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 367] <... rt_sigprocmask resumed>[], 8) = 0 [pid 367] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[369]}, 88) = 369 ./strace-static-x86_64: Process 369 attached [pid 367] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 369] set_robust_list(0x7ff437a2d9a0, 24 [pid 367] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 369] <... set_robust_list resumed>) = 0 [ 26.146634][ T365] loop0: detected capacity change from 0 to 512 [pid 367] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 369] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 368] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 369] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 367] <... futex resumed>) = 0 [pid 369] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 367] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] <... open resumed>) = 5 [pid 369] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 367] <... futex resumed>) = 0 [pid 369] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 367] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] <... mmap resumed>) = 0x400000000000 [pid 369] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 367] <... futex resumed>) = 0 [pid 367] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 369] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 367] <... futex resumed>) = ? [pid 368] <... write resumed>) = ? [pid 368] +++ killed by SIGBUS +++ [pid 369] +++ killed by SIGBUS +++ [pid 367] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=367, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 370 attached , child_tidptr=0x5555900c9690) = 370 [pid 370] set_robust_list(0x5555900c96a0, 24) = 0 [pid 370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 370] setpgid(0, 0) = 0 [pid 370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 370] write(3, "1000", 4) = 4 [pid 370] close(3) = 0 [pid 370] write(1, "executing program\n", 18) = 18 [pid 370] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 370] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 370] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 370] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 370] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 370] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[371]}, 88) = 371 [pid 370] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ./strace-static-x86_64: Process 371 attached [pid 370] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 371] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 371] creat("./bus", 000) = 3 [pid 371] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 370] <... futex resumed>) = 0 [pid 370] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 370] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 370] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 370] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 371] memfd_create("syzkaller", 0 [pid 370] <... clone3 resumed> => {parent_tid=[372]}, 88) = 372 [pid 370] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 370] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 372 attached [pid 372] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 372] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 372] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 372] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] <... futex resumed>) = 0 [pid 370] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] <... futex resumed>) = 1 [pid 372] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 372] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... memfd_create resumed>) = 5 [pid 371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 370] <... futex resumed>) = 0 [pid 370] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] <... futex resumed>) = 1 [pid 372] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 371] <... mmap resumed>) = 0x7ff42f60d000 [pid 372] <... mmap resumed>) = 0x400000000000 [pid 371] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000ec2} --- [pid 370] <... futex resumed>) = ? [pid 372] +++ killed by SIGBUS +++ [pid 371] +++ killed by SIGBUS +++ [pid 370] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=370, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 373 ./strace-static-x86_64: Process 373 attached [pid 373] set_robust_list(0x5555900c96a0, 24) = 0 [pid 373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 373] setpgid(0, 0) = 0 [pid 373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 373] write(3, "1000", 4) = 4 [pid 373] close(3) = 0 [pid 373] write(1, "executing program\n", 18executing program ) = 18 [pid 373] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 373] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 373] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 373] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 373] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 373] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 373] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[374]}, 88) = 374 [pid 373] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 373] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 373] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 374 attached [pid 374] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 374] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 374] creat("./bus", 000) = 3 [pid 374] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 373] <... futex resumed>) = 0 [pid 373] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 373] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 373] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 373] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 373] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 373] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[375]}, 88) = 375 [pid 373] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 373] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 373] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 375 attached [pid 375] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 375] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 375] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 375] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... futex resumed>) = 0 [pid 373] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 373] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 375] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... futex resumed>) = 0 [pid 373] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 373] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 373] <... futex resumed>) = 0 [pid 373] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 373] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 375] <... futex resumed>) = 1 [pid 375] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 373] <... futex resumed>) = ? [pid 375] +++ killed by SIGBUS +++ [pid 374] +++ killed by SIGBUS +++ [pid 373] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=373, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 376 ./strace-static-x86_64: Process 376 attached [pid 376] set_robust_list(0x5555900c96a0, 24) = 0 [pid 376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 376] setpgid(0, 0) = 0 [pid 376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 376] write(3, "1000", 4executing program ) = 4 [pid 376] close(3) = 0 [pid 376] write(1, "executing program\n", 18) = 18 [pid 376] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 376] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 376] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 376] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 376] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 376] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[377]}, 88) = 377 [pid 376] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 376] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 377 attached [pid 377] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 377] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 377] creat("./bus", 000) = 3 [pid 377] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... futex resumed>) = 0 [pid 376] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 376] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 376] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 376] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[378]}, 88) = 378 [pid 376] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 376] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] <... futex resumed>) = 1 [pid 377] memfd_create("syzkaller", 0) = 4 [pid 377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 377] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 377] munmap(0x7ff42f60d000, 138412032) = 0 [pid 377] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 377] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 378 attached [pid 378] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 378] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 378] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 378] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... futex resumed>) = 0 [pid 376] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 378] <... futex resumed>) = 1 [pid 378] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 377] <... ioctl resumed>) = 0 [pid 377] close(4) = 0 [pid 377] close(5 [pid 378] <... open resumed>) = 6 [pid 378] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 376] <... futex resumed>) = 0 [pid 378] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 376] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] <... close resumed>) = 0 [pid 377] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 377] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 378] <... mmap resumed>) = 0x400000000000 [pid 378] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 376] <... futex resumed>) = 0 [pid 376] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 378] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 378] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 376] <... futex resumed>) = 0 [pid 378] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 377] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 377] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 377] ioctl(5, LOOP_CLR_FD) = 0 [pid 377] close(5) = 0 [pid 377] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 377] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] exit_group(0) = ? [pid 378] <... futex resumed>) = ? [pid 378] +++ exited with 0 +++ [pid 377] <... futex resumed>) = ? [pid 377] +++ exited with 0 +++ [pid 376] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=376, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 379 ./strace-static-x86_64: Process 379 attached [pid 379] set_robust_list(0x5555900c96a0, 24) = 0 [pid 379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 379] setpgid(0, 0) = 0 [pid 379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 379] write(3, "1000", 4executing program ) = 4 [pid 379] close(3) = 0 [pid 379] write(1, "executing program\n", 18) = 18 [ 26.263134][ T377] loop0: detected capacity change from 0 to 512 [pid 379] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 379] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 379] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 379] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 379] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 379] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[380]}, 88) = 380 [pid 379] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 379] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 379] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 380 attached [pid 380] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 380] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 380] creat("./bus", 000) = 3 [pid 380] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = 0 [pid 379] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 379] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 379] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 379] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 379] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[381]}, 88) = 381 [pid 379] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 379] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 379] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] <... futex resumed>) = 1 [pid 380] memfd_create("syzkaller", 0) = 4 [pid 380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 380] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 380] munmap(0x7ff42f60d000, 138412032) = 0 [pid 380] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 380] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 381 attached [pid 381] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 381] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 381] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 381] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 381] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 379] <... futex resumed>) = 0 [pid 379] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 379] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 381] <... futex resumed>) = 0 [pid 381] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 380] <... ioctl resumed>) = 0 [pid 381] <... open resumed>) = 6 [pid 380] close(4) = 0 [pid 380] close(5 [pid 381] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... close resumed>) = 0 [pid 381] <... futex resumed>) = 1 [pid 380] mkdir("./bus", 0777 [pid 379] <... futex resumed>) = 0 [pid 379] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 379] <... futex resumed>) = 0 [pid 380] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 379] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 380] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 380] ioctl(4, LOOP_CLR_FD) = 0 [pid 380] close(4) = 0 [pid 380] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 380] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 381] <... mmap resumed>) = 0x400000000000 [pid 381] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 379] <... futex resumed>) = 0 [pid 381] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 379] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 380] <... futex resumed>) = 0 [pid 379] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 380] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 380] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 379] <... futex resumed>) = 0 [pid 379] exit_group(0 [pid 380] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 379] <... exit_group resumed>) = ? [pid 380] +++ exited with 0 +++ [pid 381] <... futex resumed>) = ? [pid 381] +++ exited with 0 +++ [pid 379] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=379, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 382 ./strace-static-x86_64: Process 382 attached [pid 382] set_robust_list(0x5555900c96a0, 24) = 0 [pid 382] prctl(PR_SET_PDEATHSIG, SIGKILLexecuting program ) = 0 [pid 382] setpgid(0, 0) = 0 [pid 382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 382] write(3, "1000", 4) = 4 [pid 382] close(3) = 0 [pid 382] write(1, "executing program\n", 18) = 18 [pid 382] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 382] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 382] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 382] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 382] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[383]}, 88) = 383 [pid 382] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 382] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 383 attached [pid 383] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 383] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 383] creat("./bus", 000) = 3 [pid 383] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = 0 [pid 382] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 382] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 382] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 382] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[384]}, 88) = 384 [pid 382] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 382] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 383] <... futex resumed>) = 1 [pid 383] memfd_create("syzkaller", 0) = 4 [pid 383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 383] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 383] munmap(0x7ff42f60d000, 138412032) = 0 [pid 383] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 383] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 384 attached [pid 384] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 384] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 384] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 384] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 382] <... futex resumed>) = 0 [pid 384] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] <... ioctl resumed>) = 0 [pid 382] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 382] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... futex resumed>) = 0 [pid 383] close(4) = 0 [pid 383] close(5) = 0 [pid 383] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 383] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 384] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 384] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = 0 [pid 382] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... futex resumed>) = 1 [pid 384] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 382] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [ 26.329759][ T380] loop0: detected capacity change from 0 to 512 [ 26.367247][ T383] loop0: detected capacity change from 0 to 512 [pid 384] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 384] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = 0 [pid 384] <... futex resumed>) = 1 [pid 384] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] <... mount resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 383] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 383] ioctl(6, LOOP_CLR_FD) = 0 [pid 383] close(6) = 0 [pid 383] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 383] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 382] exit_group(0) = ? [pid 384] <... futex resumed>) = ? [pid 383] <... futex resumed>) = ? [pid 383] +++ exited with 0 +++ [pid 384] +++ exited with 0 +++ [ 26.381542][ T383] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 26.392359][ T383] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 26.405603][ T383] EXT4-fs (loop0): Remounting filesystem read-only [ 26.412002][ T383] EXT4-fs (loop0): get root inode failed [ 26.417402][ T383] EXT4-fs (loop0): mount failed [pid 382] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=382, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 387 ./strace-static-x86_64: Process 387 attached [pid 387] set_robust_list(0x5555900c96a0, 24) = 0 [pid 387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 387] setpgid(0, 0) = 0 [pid 387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 387] write(3, "1000", 4) = 4 [pid 387] close(3) = 0 [pid 387] write(1, "executing program\n", 18executing program ) = 18 [pid 387] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 387] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 387] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 387] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 387] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[388]}, 88) = 388 [pid 387] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 387] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 388 attached [pid 388] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 388] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 388] creat("./bus", 000) = 3 [pid 388] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... futex resumed>) = 0 [pid 387] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 387] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 387] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 387] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[389]}, 88) = 389 [pid 387] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 387] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... futex resumed>) = 1 [pid 388] memfd_create("syzkaller", 0) = 4 [pid 388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 389 attached [pid 389] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 389] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 389] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 388] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 389] <... mount resumed>) = 0 [pid 389] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... futex resumed>) = 0 [pid 387] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... futex resumed>) = 1 [pid 388] <... write resumed>) = 262144 [pid 389] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 388] munmap(0x7ff42f60d000, 138412032 [pid 389] <... open resumed>) = 5 [pid 389] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... futex resumed>) = 0 [pid 387] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... futex resumed>) = 1 [pid 389] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 387] <... futex resumed>) = 0 [pid 387] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 389] <... futex resumed>) = 1 [pid 389] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 387] <... futex resumed>) = ? [pid 388] <... munmap resumed>) = ? [pid 388] +++ killed by SIGBUS +++ [pid 389] +++ killed by SIGBUS +++ [pid 387] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=387, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 390 executing program ./strace-static-x86_64: Process 390 attached [pid 390] set_robust_list(0x5555900c96a0, 24) = 0 [pid 390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 390] setpgid(0, 0) = 0 [pid 390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 390] write(3, "1000", 4) = 4 [pid 390] close(3) = 0 [pid 390] write(1, "executing program\n", 18) = 18 [pid 390] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 390] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 390] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 390] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[391]}, 88) = 391 [pid 390] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 390] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 391 attached [pid 391] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 391] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 391] creat("./bus", 000) = 3 [pid 391] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 391] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] <... futex resumed>) = 0 [pid 390] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 390] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 390] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 390] rt_sigprocmask(SIG_BLOCK, ~[], [pid 391] <... futex resumed>) = 0 [pid 390] <... rt_sigprocmask resumed>[], 8) = 0 [pid 390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 392 attached [pid 391] memfd_create("syzkaller", 0 [pid 390] <... clone3 resumed> => {parent_tid=[392]}, 88) = 392 [pid 390] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 390] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] set_robust_list(0x7ff437a2d9a0, 24 [pid 391] <... memfd_create resumed>) = 4 [pid 392] <... set_robust_list resumed>) = 0 [pid 392] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 392] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 392] <... mount resumed>) = 0 [pid 391] <... mmap resumed>) = 0x7ff42f60d000 [pid 392] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 392] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] <... futex resumed>) = 0 [pid 390] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 390] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... futex resumed>) = 0 [pid 392] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 392] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 390] <... futex resumed>) = 0 [pid 390] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... futex resumed>) = 1 [pid 392] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 390] <... futex resumed>) = 0 [pid 390] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 392] <... futex resumed>) = 1 [pid 392] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 390] <... futex resumed>) = ? [pid 391] <... write resumed>) = ? [pid 391] +++ killed by SIGBUS +++ [pid 392] +++ killed by SIGBUS +++ [pid 390] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=390, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 393 ./strace-static-x86_64: Process 393 attached [pid 393] set_robust_list(0x5555900c96a0, 24) = 0 [pid 393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 393] setpgid(0, 0) = 0 [pid 393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 393] write(3, "1000", 4) = 4 [pid 393] close(3) = 0 [pid 393] write(1, "executing program\n", 18executing program ) = 18 [pid 393] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 393] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 393] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 393] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 393] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[394]}, 88) = 394 [pid 393] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 393] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 394 attached [pid 394] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 394] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 394] creat("./bus", 000) = 3 [pid 394] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 393] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 393] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE [pid 394] <... futex resumed>) = 1 [pid 393] <... mprotect resumed>) = 0 [pid 393] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 393] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[395]}, 88) = 395 [pid 393] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 393] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 395 attached [pid 395] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 395] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 395] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 395] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 393] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 395] <... futex resumed>) = 1 [pid 395] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 395] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 393] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 395] <... futex resumed>) = 1 [pid 395] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 393] <... futex resumed>) = 0 [pid 393] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 395] <... futex resumed>) = 1 [pid 395] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 394] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000001000} --- [pid 393] <... futex resumed>) = ? [pid 394] +++ killed by SIGBUS +++ [pid 395] +++ killed by SIGBUS +++ [pid 393] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=393, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 396 ./strace-static-x86_64: Process 396 attached [pid 396] set_robust_list(0x5555900c96a0, 24) = 0 [pid 396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 396] setpgid(0, 0) = 0 [pid 396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 396] write(3, "1000", 4) = 4 [pid 396] close(3) = 0 [pid 396] write(1, "executing program\n", 18executing program ) = 18 [pid 396] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 396] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 396] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 396] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 396] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[397]}, 88) = 397 [pid 396] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 396] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 397 attached [pid 397] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 397] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 397] creat("./bus", 000) = 3 [pid 397] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = 0 [pid 396] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 396] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 396] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 396] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[398]}, 88) = 398 [pid 396] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 396] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 397] memfd_create("syzkaller", 0) = 4 [pid 397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 397] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 397] munmap(0x7ff42f60d000, 138412032) = 0 [pid 397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 397] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 398 attached [pid 398] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 398] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 398] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 397] <... ioctl resumed>) = 0 [pid 398] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] close(4 [pid 396] <... futex resumed>) = 0 [pid 397] <... close resumed>) = 0 [pid 398] <... futex resumed>) = 1 [pid 396] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] close(5 [pid 398] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 397] <... close resumed>) = 0 [pid 397] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 397] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 397] ioctl(4, LOOP_CLR_FD) = 0 [pid 397] close(4) = 0 [pid 397] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 397] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 398] <... open resumed>) = 4 [pid 398] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 396] <... futex resumed>) = 0 [pid 398] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] <... futex resumed>) = 0 [pid 396] <... futex resumed>) = 1 [pid 397] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 396] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... mmap resumed>) = 0x400000000000 [pid 397] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = 0 [pid 397] <... futex resumed>) = 1 [pid 396] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 397] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 396] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 397] <... bpf resumed>) = 5 [pid 397] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 397] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... futex resumed>) = 0 [pid 396] exit_group(0) = ? [pid 398] <... futex resumed>) = ? [pid 397] <... futex resumed>) = ? [pid 398] +++ exited with 0 +++ [pid 397] +++ exited with 0 +++ [pid 396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=396, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 399 ./strace-static-x86_64: Process 399 attached [pid 399] set_robust_list(0x5555900c96a0, 24) = 0 [pid 399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 399] setpgid(0, 0) = 0 [pid 399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 399] write(3, "1000", 4) = 4 executing program [pid 399] close(3) = 0 [pid 399] write(1, "executing program\n", 18) = 18 [pid 399] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 399] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 399] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 399] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 399] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[400]}, 88) = 400 [pid 399] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 399] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 400 attached [pid 400] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 400] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 400] creat("./bus", 000) = 3 [pid 400] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = 0 [pid 399] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 399] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 399] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 399] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[401]}, 88) = 401 [pid 399] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 399] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 400] <... futex resumed>) = 1 [pid 400] memfd_create("syzkaller", 0) = 4 [pid 400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 400] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 401 attached ) = 262144 [pid 400] munmap(0x7ff42f60d000, 138412032) = 0 [pid 400] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 26.547552][ T397] loop0: detected capacity change from 0 to 512 [pid 400] ioctl(5, LOOP_SET_FD, 4 [pid 401] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 401] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 400] <... ioctl resumed>) = 0 [pid 401] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 400] close(4 [pid 401] <... mount resumed>) = 0 [pid 400] <... close resumed>) = 0 [pid 401] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 400] close(5 [pid 399] <... futex resumed>) = 0 [pid 399] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 400] <... close resumed>) = 0 [pid 399] <... futex resumed>) = 0 [pid 399] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 401] <... open resumed>) = 4 [pid 400] mkdir("./bus", 0777 [pid 401] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 400] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 399] <... futex resumed>) = 0 [pid 401] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 399] <... futex resumed>) = 0 [pid 401] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 399] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 400] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 400] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 400] ioctl(5, LOOP_CLR_FD) = 0 [pid 400] close(5) = 0 [pid 400] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 400] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 401] <... mmap resumed>) = 0x400000000000 [pid 401] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 399] <... futex resumed>) = 0 [pid 399] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 401] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 400] <... futex resumed>) = 0 [pid 400] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 400] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = 0 [pid 399] exit_group(0) = ? [pid 401] <... futex resumed>) = ? [pid 401] +++ exited with 0 +++ [pid 400] <... futex resumed>) = ? [pid 400] +++ exited with 0 +++ [pid 399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=399, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 402 ./strace-static-x86_64: Process 402 attached [pid 402] set_robust_list(0x5555900c96a0, 24) = 0 [pid 402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 402] setpgid(0, 0) = 0 [pid 402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 402] write(3, "1000", 4) = 4 [pid 402] close(3) = 0 [pid 402] write(1, "executing program\n", 18executing program ) = 18 [pid 402] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 402] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 402] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 402] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 402] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[403]}, 88) = 403 [pid 402] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 402] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 403 attached [pid 403] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 403] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 403] creat("./bus", 000) = 3 [pid 403] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... futex resumed>) = 0 [pid 402] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 402] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 402] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 402] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 403] <... futex resumed>) = 1 [pid 402] <... clone3 resumed> => {parent_tid=[404]}, 88) = 404 [pid 402] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [ 26.605808][ T400] loop0: detected capacity change from 0 to 512 [pid 402] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 404 attached [pid 404] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 404] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 404] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 404] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... futex resumed>) = 0 [pid 402] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] <... futex resumed>) = 1 [pid 404] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 404] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... futex resumed>) = 0 [pid 402] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] <... futex resumed>) = 1 [pid 404] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 402] <... futex resumed>) = 0 [pid 402] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 404] <... futex resumed>) = 1 [pid 404] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 402] <... futex resumed>) = ? [pid 403] +++ killed by SIGBUS +++ [pid 404] +++ killed by SIGBUS +++ [pid 402] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=402, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 405 ./strace-static-x86_64: Process 405 attached [pid 405] set_robust_list(0x5555900c96a0, 24) = 0 [pid 405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 405] setpgid(0, 0) = 0 [pid 405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 405] write(3, "1000", 4) = 4 [pid 405] close(3) = 0 [pid 405] write(1, "executing program\n", 18) = 18 [pid 405] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 405] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 405] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 405] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[406]}, 88) = 406 [pid 405] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 405] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 406 attached [pid 406] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 406] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 406] creat("./bus", 000) = 3 [pid 406] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 405] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 405] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[407]}, 88) = 407 [pid 405] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 405] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 406] <... futex resumed>) = 1 [pid 406] memfd_create("syzkaller", 0) = 4 [pid 406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 406] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 407 attached ) = 262144 [pid 407] set_robust_list(0x7ff437a2d9a0, 24 [pid 406] munmap(0x7ff42f60d000, 138412032 [pid 407] <... set_robust_list resumed>) = 0 [pid 406] <... munmap resumed>) = 0 [pid 407] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 406] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 407] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 407] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 405] <... futex resumed>) = 0 [pid 407] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 405] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... open resumed>) = 5 [pid 407] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 405] <... futex resumed>) = 0 [pid 407] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 405] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 406] <... openat resumed>) = 6 [pid 407] <... mmap resumed>) = 0x400000000000 [pid 407] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 406] ioctl(6, LOOP_SET_FD, 4 [pid 407] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 405] <... futex resumed>) = ? [pid 406] <... ioctl resumed>) = ? [pid 407] +++ killed by SIGBUS +++ [pid 406] +++ killed by SIGBUS +++ [pid 405] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=405, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 408 attached , child_tidptr=0x5555900c9690) = 408 [pid 408] set_robust_list(0x5555900c96a0, 24) = 0 [pid 408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 408] setpgid(0, 0) = 0 [pid 408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 408] write(3, "1000", 4) = 4 [pid 408] close(3) = 0 [pid 408] write(1, "executing program\n", 18executing program ) = 18 [pid 408] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 408] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 408] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 408] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 408] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 409 attached => {parent_tid=[409]}, 88) = 409 [pid 409] set_robust_list(0x7ff437a4e9a0, 24 [pid 408] rt_sigprocmask(SIG_SETMASK, [], [pid 409] <... set_robust_list resumed>) = 0 [pid 408] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 409] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 408] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 409] creat("./bus", 000 [pid 408] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] <... creat resumed>) = 3 [pid 409] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 408] <... futex resumed>) = 0 [pid 408] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 408] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 408] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 408] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[410]}, 88) = 410 ./strace-static-x86_64: Process 410 attached [pid 409] memfd_create("syzkaller", 0 [pid 408] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 408] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] set_robust_list(0x7ff437a2d9a0, 24 [pid 409] <... memfd_create resumed>) = 4 [pid 410] <... set_robust_list resumed>) = 0 [pid 409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 410] rt_sigprocmask(SIG_SETMASK, [], [pid 409] <... mmap resumed>) = 0x7ff42f60d000 [pid 410] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 409] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 410] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 409] <... write resumed>) = 262144 [pid 410] <... mount resumed>) = 0 [pid 410] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] <... futex resumed>) = 0 [pid 409] munmap(0x7ff42f60d000, 138412032 [pid 408] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... futex resumed>) = 1 [pid 410] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 410] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... munmap resumed>) = 0 [pid 408] <... futex resumed>) = 0 [pid 408] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... futex resumed>) = 1 [pid 410] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 409] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 410] <... mmap resumed>) = 0x400000000000 [pid 410] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... openat resumed>) = 6 [pid 408] <... futex resumed>) = 0 [pid 408] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 410] <... futex resumed>) = 1 [pid 410] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 408] <... futex resumed>) = ? [pid 409] +++ killed by SIGBUS +++ [pid 410] +++ killed by SIGBUS +++ [pid 408] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=408, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 411 attached , child_tidptr=0x5555900c9690) = 411 [pid 411] set_robust_list(0x5555900c96a0, 24) = 0 [pid 411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 411] setpgid(0, 0) = 0 [pid 411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 411] write(3, "1000", 4) = 4 [pid 411] close(3) = 0 [pid 411] write(1, "executing program\n", 18executing program ) = 18 [pid 411] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 411] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 411] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 411] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 411] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 412 attached => {parent_tid=[412]}, 88) = 412 [pid 411] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 411] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 412] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 412] creat("./bus", 000) = 3 [pid 412] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 411] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 411] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 411] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[413]}, 88) = 413 [pid 412] <... futex resumed>) = 1 [pid 411] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 411] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 413 attached [pid 413] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 413] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 413] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 413] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 413] <... futex resumed>) = 1 [pid 413] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 413] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 413] <... futex resumed>) = 1 [pid 413] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 413] <... futex resumed>) = 1 [pid 413] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 411] <... futex resumed>) = ? [pid 412] +++ killed by SIGBUS +++ executing program [pid 413] +++ killed by SIGBUS +++ [pid 411] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=411, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 414 ./strace-static-x86_64: Process 414 attached [pid 414] set_robust_list(0x5555900c96a0, 24) = 0 [pid 414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 414] setpgid(0, 0) = 0 [pid 414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 414] write(3, "1000", 4) = 4 [pid 414] close(3) = 0 [pid 414] write(1, "executing program\n", 18) = 18 [pid 414] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 414] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 414] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 414] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 414] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 414] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[415]}, 88) = 415 [pid 414] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 414] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 414] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 415 attached [pid 415] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 415] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 415] creat("./bus", 000) = 3 [pid 415] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... futex resumed>) = 0 [pid 414] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 414] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 414] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 414] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 414] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[416]}, 88) = 416 [pid 414] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 414] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 414] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 415] <... futex resumed>) = 1 [pid 415] memfd_create("syzkaller", 0) = 4 [pid 415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 416 attached [pid 415] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 416] set_robust_list(0x7ff437a2d9a0, 24 [pid 415] <... write resumed>) = 262144 [pid 416] <... set_robust_list resumed>) = 0 [pid 415] munmap(0x7ff42f60d000, 138412032 [pid 416] rt_sigprocmask(SIG_SETMASK, [], [pid 415] <... munmap resumed>) = 0 [pid 416] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 415] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 416] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 415] <... openat resumed>) = 5 [pid 416] <... mount resumed>) = 0 [pid 415] ioctl(5, LOOP_SET_FD, 4 [pid 416] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 416] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] <... futex resumed>) = 0 [pid 414] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 414] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 416] <... futex resumed>) = 0 [pid 416] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 415] <... ioctl resumed>) = 0 [pid 416] <... open resumed>) = 6 [pid 416] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] close(4 [pid 414] <... futex resumed>) = 0 [pid 414] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 414] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 416] <... futex resumed>) = 1 [pid 415] <... close resumed>) = 0 [pid 416] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 415] close(5) = 0 [pid 415] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 415] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 415] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 415] ioctl(4, LOOP_CLR_FD) = 0 [pid 415] close(4) = 0 [pid 415] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 415] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 416] <... mmap resumed>) = 0x400000000000 [pid 416] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... futex resumed>) = 0 [pid 414] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 414] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 415] <... futex resumed>) = 0 [pid 415] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 416] <... futex resumed>) = 1 [pid 416] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 415] <... bpf resumed>) = 4 [pid 415] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... futex resumed>) = 0 [pid 414] exit_group(0) = ? [pid 416] <... futex resumed>) = ? [pid 415] <... futex resumed>) = ? [pid 415] +++ exited with 0 +++ [ 26.747759][ T415] loop0: detected capacity change from 0 to 512 [pid 416] +++ exited with 0 +++ [pid 414] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 417 ./strace-static-x86_64: Process 417 attached [pid 417] set_robust_list(0x5555900c96a0, 24) = 0 [pid 417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 417] setpgid(0, 0) = 0 [pid 417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 417] write(3, "1000", 4) = 4 [pid 417] close(3) = 0 [pid 417] write(1, "executing program\n", 18executing program ) = 18 [pid 417] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 417] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 417] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 417] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 417] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[418]}, 88) = 418 [pid 417] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 417] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 418 attached [pid 418] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 418] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 418] creat("./bus", 000) = 3 [pid 418] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] <... futex resumed>) = 0 [pid 417] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 417] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 417] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 417] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[419]}, 88) = 419 [pid 417] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 417] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] <... futex resumed>) = 1 [pid 418] memfd_create("syzkaller", 0) = 4 [pid 418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 419 attached [pid 419] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 419] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 419] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 419] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 417] <... futex resumed>) = 0 [pid 417] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 419] <... futex resumed>) = 1 [pid 419] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 419] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] <... futex resumed>) = 0 [pid 417] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 419] <... futex resumed>) = 1 [pid 419] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 417] <... futex resumed>) = 0 [pid 417] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 419] <... futex resumed>) = 1 [pid 419] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 417] <... futex resumed>) = ? [pid 418] <... write resumed>) = ? [pid 418] +++ killed by SIGBUS +++ [pid 419] +++ killed by SIGBUS +++ [pid 417] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=417, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 420 ./strace-static-x86_64: Process 420 attached [pid 420] set_robust_list(0x5555900c96a0, 24) = 0 [pid 420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 420] setpgid(0, 0) = 0 [pid 420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 420] write(3, "1000", 4) = 4 [pid 420] close(3) = 0 [pid 420] write(1, "executing program\n", 18) = 18 executing program [pid 420] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 420] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 420] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 420] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 420] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[421]}, 88) = 421 [pid 420] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 420] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 421 attached [pid 421] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 421] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 421] creat("./bus", 000) = 3 [pid 421] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... futex resumed>) = 0 [pid 420] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 420] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 420] rt_sigprocmask(SIG_BLOCK, ~[], [pid 421] <... futex resumed>) = 1 [pid 420] <... rt_sigprocmask resumed>[], 8) = 0 [pid 420] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[422]}, 88) = 422 [pid 420] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 420] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 422 attached [pid 421] memfd_create("syzkaller", 0) = 4 [pid 421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 422] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 422] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 422] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 421] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 422] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 420] <... futex resumed>) = 0 [pid 420] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 422] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 422] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... futex resumed>) = 0 [pid 420] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 422] <... futex resumed>) = 1 [pid 421] <... write resumed>) = 262144 [pid 422] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 420] <... futex resumed>) = 0 [pid 420] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 422] <... futex resumed>) = 1 [pid 422] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 420] <... futex resumed>) = ? [pid 421] +++ killed by SIGBUS +++ executing program [pid 422] +++ killed by SIGBUS +++ [pid 420] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=420, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 423 ./strace-static-x86_64: Process 423 attached [pid 423] set_robust_list(0x5555900c96a0, 24) = 0 [pid 423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 423] setpgid(0, 0) = 0 [pid 423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 423] write(3, "1000", 4) = 4 [pid 423] close(3) = 0 [pid 423] write(1, "executing program\n", 18) = 18 [pid 423] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 423] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 423] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 423] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 423] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[424]}, 88) = 424 [pid 423] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 423] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 424 attached [pid 424] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 424] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 424] creat("./bus", 000) = 3 [pid 424] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 0 [pid 424] <... futex resumed>) = 1 [pid 423] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 423] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 423] rt_sigprocmask(SIG_BLOCK, ~[], [pid 424] memfd_create("syzkaller", 0 [pid 423] <... rt_sigprocmask resumed>[], 8) = 0 [pid 423] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 424] <... memfd_create resumed>) = 4 ./strace-static-x86_64: Process 425 attached [pid 423] <... clone3 resumed> => {parent_tid=[425]}, 88) = 425 [pid 424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 423] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 424] <... mmap resumed>) = 0x7ff42f60d000 [pid 423] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 425] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 425] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 424] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 425] <... mount resumed>) = 0 [pid 425] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 0 [pid 423] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] <... futex resumed>) = 1 [pid 425] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 425] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 0 [pid 423] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] <... futex resumed>) = 1 [pid 425] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 424] <... write resumed>) = 262144 [pid 423] <... futex resumed>) = 0 [pid 423] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 425] <... futex resumed>) = 1 [pid 424] munmap(0x7ff42f60d000, 138412032 [pid 425] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 424] <... munmap resumed>) = ? [pid 423] <... futex resumed>) = ? [pid 424] +++ killed by SIGBUS +++ [pid 425] +++ killed by SIGBUS +++ [pid 423] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=423, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 426 ./strace-static-x86_64: Process 426 attached [pid 426] set_robust_list(0x5555900c96a0, 24) = 0 [pid 426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 426] setpgid(0, 0) = 0 [pid 426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 426] write(3, "1000", 4) = 4 [pid 426] close(3) = 0 [pid 426] write(1, "executing program\n", 18) = 18 [pid 426] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 426] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 426] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 426] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 426] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[427]}, 88) = 427 [pid 426] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 426] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 427 attached [pid 427] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 427] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 427] creat("./bus", 000) = 3 [pid 427] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = 0 [pid 426] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 426] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 426] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 426] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[428]}, 88) = 428 [pid 426] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 426] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 427] <... futex resumed>) = 1 [pid 427] memfd_create("syzkaller", 0) = 4 [pid 427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 428 attached [pid 428] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 428] rt_sigprocmask(SIG_SETMASK, [], [pid 427] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 428] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 428] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 428] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 426] <... futex resumed>) = 0 [pid 426] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 426] <... futex resumed>) = 0 [pid 428] <... open resumed>) = 5 [pid 426] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] <... write resumed>) = 262144 [pid 426] <... futex resumed>) = 0 [pid 426] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] <... futex resumed>) = 1 [pid 428] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 426] <... futex resumed>) = 0 [pid 426] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 428] <... futex resumed>) = 1 [pid 428] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 426] <... futex resumed>) = ? [pid 427] +++ killed by SIGBUS +++ [pid 428] +++ killed by SIGBUS +++ [pid 426] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=426, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 429 ./strace-static-x86_64: Process 429 attached [pid 429] set_robust_list(0x5555900c96a0, 24) = 0 [pid 429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 429] setpgid(0, 0) = 0 [pid 429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 429] write(3, "1000", 4) = 4 [pid 429] close(3) = 0 executing program [pid 429] write(1, "executing program\n", 18) = 18 [pid 429] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 429] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 429] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 429] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 429] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 429] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[430]}, 88) = 430 [pid 429] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 429] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 429] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 430 attached [pid 430] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 430] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 430] creat("./bus", 000) = 3 [pid 430] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] <... futex resumed>) = 0 [pid 429] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 429] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 429] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 429] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 429] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[431]}, 88) = 431 [pid 429] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 429] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 429] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 430] <... futex resumed>) = 1 [pid 430] memfd_create("syzkaller", 0) = 4 [pid 430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 430] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 430] munmap(0x7ff42f60d000, 138412032./strace-static-x86_64: Process 431 attached ) = 0 [pid 431] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 431] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 431] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 430] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 431] <... mount resumed>) = 0 [pid 430] ioctl(5, LOOP_SET_FD, 4 [pid 431] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 429] <... futex resumed>) = 0 [pid 431] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 431] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] <... futex resumed>) = 0 [pid 431] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 429] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 431] <... open resumed>) = 6 [pid 431] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 429] <... futex resumed>) = 0 [pid 431] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 429] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 429] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 430] <... ioctl resumed>) = 0 [pid 430] close(4) = 0 [pid 430] close(5) = 0 [pid 430] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 430] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 430] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 430] ioctl(4, LOOP_CLR_FD) = 0 [pid 430] close(4) = 0 [pid 430] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 430] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] <... mmap resumed>) = 0x400000000000 [pid 431] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] <... futex resumed>) = 0 [pid 429] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 429] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 430] <... futex resumed>) = 0 [pid 430] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 431] <... futex resumed>) = 1 [pid 431] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] <... bpf resumed>) = 4 [pid 430] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 429] <... futex resumed>) = 0 [pid 429] exit_group(0) = ? [pid 430] +++ exited with 0 +++ [pid 431] <... futex resumed>) = ? [ 26.903903][ T430] loop0: detected capacity change from 0 to 512 [ 26.904589][ T431] blk_update_request: I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 31 prio class 0 [pid 431] +++ exited with 0 +++ [pid 429] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=429, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 432 ./strace-static-x86_64: Process 432 attached [pid 432] set_robust_list(0x5555900c96a0, 24) = 0 [pid 432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 432] setpgid(0, 0) = 0 [pid 432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 432] write(3, "1000", 4) = 4 [pid 432] close(3) = 0 [pid 432] write(1, "executing program\n", 18executing program ) = 18 [pid 432] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 432] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 432] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 432] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 432] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[433]}, 88) = 433 ./strace-static-x86_64: Process 433 attached [pid 432] rt_sigprocmask(SIG_SETMASK, [], [pid 433] set_robust_list(0x7ff437a4e9a0, 24 [pid 432] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 433] <... set_robust_list resumed>) = 0 [pid 432] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] rt_sigprocmask(SIG_SETMASK, [], [pid 432] <... futex resumed>) = 0 [pid 433] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 432] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] creat("./bus", 000) = 3 [pid 433] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 432] <... futex resumed>) = 0 [pid 432] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 432] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 433] memfd_create("syzkaller", 0 [pid 432] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 432] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 433] <... memfd_create resumed>) = 4 ./strace-static-x86_64: Process 434 attached [pid 433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 432] <... clone3 resumed> => {parent_tid=[434]}, 88) = 434 [pid 432] rt_sigprocmask(SIG_SETMASK, [], [pid 434] set_robust_list(0x7ff437a2d9a0, 24 [pid 432] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 434] <... set_robust_list resumed>) = 0 [pid 432] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] rt_sigprocmask(SIG_SETMASK, [], [pid 432] <... futex resumed>) = 0 [pid 434] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 434] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 434] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 434] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 432] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 434] <... futex resumed>) = 0 [pid 432] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 434] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 433] <... write resumed>) = 262144 [pid 433] munmap(0x7ff42f60d000, 138412032 [pid 434] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... munmap resumed>) = 0 [pid 433] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 433] ioctl(6, LOOP_SET_FD, 4 [pid 434] <... futex resumed>) = 1 [pid 432] <... futex resumed>) = 0 [pid 432] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 434] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 433] <... ioctl resumed>) = 0 [pid 433] close(4) = 0 [pid 433] close(6) = 0 [pid 433] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 433] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 433] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 433] ioctl(4, LOOP_CLR_FD) = 0 [pid 433] close(4) = 0 [pid 433] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 433] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 434] <... mmap resumed>) = 0x400000000000 [pid 434] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... futex resumed>) = 0 [pid 432] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 432] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 433] <... futex resumed>) = 0 [pid 433] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 434] <... futex resumed>) = 1 [pid 434] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] <... bpf resumed>) = 4 [pid 433] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... futex resumed>) = 0 [pid 432] exit_group(0) = ? [pid 434] <... futex resumed>) = ? [pid 433] <... futex resumed>) = ? [pid 434] +++ exited with 0 +++ [ 27.000134][ T433] loop0: detected capacity change from 0 to 512 [pid 433] +++ exited with 0 +++ [pid 432] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=432, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 435 ./strace-static-x86_64: Process 435 attached [pid 435] set_robust_list(0x5555900c96a0, 24) = 0 [pid 435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 435] setpgid(0, 0) = 0 [pid 435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 435] write(3, "1000", 4executing program ) = 4 [pid 435] close(3) = 0 [pid 435] write(1, "executing program\n", 18) = 18 [pid 435] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 435] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 435] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 435] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 435] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[436]}, 88) = 436 [pid 435] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 435] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 436 attached [pid 436] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 436] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 436] creat("./bus", 000) = 3 [pid 436] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 435] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 435] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 435] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[437]}, 88) = 437 [pid 435] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 435] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] <... futex resumed>) = 1 [pid 436] memfd_create("syzkaller", 0) = 4 [pid 436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 436] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 436] munmap(0x7ff42f60d000, 138412032) = 0 [pid 436] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 436] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 437 attached ) = 0 [pid 437] set_robust_list(0x7ff437a2d9a0, 24 [pid 436] close(4) = 0 [pid 436] close(5 [pid 437] <... set_robust_list resumed>) = 0 [pid 436] <... close resumed>) = 0 [pid 436] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 436] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 437] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 437] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 437] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 437] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 437] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 437] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 435] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 437] <... futex resumed>) = 0 [pid 437] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 437] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 435] <... futex resumed>) = 0 [pid 436] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 436] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 436] ioctl(6, LOOP_CLR_FD) = 0 [pid 436] close(6) = 0 [pid 436] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 436] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] exit_group(0) = ? [pid 436] <... futex resumed>) = ? [pid 436] +++ exited with 0 +++ [pid 437] <... futex resumed>) = ? [pid 437] +++ exited with 0 +++ [pid 435] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=435, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 438 ./strace-static-x86_64: Process 438 attached [pid 438] set_robust_list(0x5555900c96a0, 24) = 0 [pid 438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 438] setpgid(0, 0) = 0 [pid 438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 438] write(3, "1000", 4) = 4 [pid 438] close(3) = 0 [pid 438] write(1, "executing program\n", 18executing program ) = 18 [pid 438] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 438] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 438] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 438] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 438] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[439]}, 88) = 439 [pid 438] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 438] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 439 attached [pid 439] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 439] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 439] creat("./bus", 000) = 3 [pid 439] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... futex resumed>) = 0 [ 27.080157][ T436] loop0: detected capacity change from 0 to 512 [ 27.091880][ T436] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 27.101599][ T436] EXT4-fs (loop0): fragment/cluster size (2048) != block size (1024) [pid 438] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 438] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 438] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 438] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[440]}, 88) = 440 [pid 438] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 438] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... futex resumed>) = 1 [pid 439] memfd_create("syzkaller", 0) = 4 [pid 439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 439] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 440 attached [pid 440] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 440] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 439] <... write resumed>) = 262144 [pid 440] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 439] munmap(0x7ff42f60d000, 138412032 [pid 440] <... mount resumed>) = 0 [pid 439] <... munmap resumed>) = 0 [pid 440] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 440] <... futex resumed>) = 1 [pid 438] <... futex resumed>) = 0 [pid 438] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] ioctl(5, LOOP_SET_FD, 4 [pid 440] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 439] <... ioctl resumed>) = 0 [pid 440] <... open resumed>) = 6 [pid 439] close(4 [pid 440] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] <... close resumed>) = 0 [pid 440] <... futex resumed>) = 1 [pid 439] close(5 [pid 440] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 438] <... futex resumed>) = 0 [pid 438] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... close resumed>) = 0 [pid 439] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 439] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 439] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 439] ioctl(4, LOOP_CLR_FD) = 0 [pid 439] close(4) = 0 [pid 439] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 439] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 440] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 438] <... futex resumed>) = 0 [pid 438] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 439] <... futex resumed>) = 0 [pid 438] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 439] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 439] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 438] <... futex resumed>) = 0 [pid 438] exit_group(0) = ? [pid 440] <... futex resumed>) = ? [pid 439] +++ exited with 0 +++ [pid 440] +++ exited with 0 +++ [pid 438] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=438, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [ 27.164160][ T439] loop0: detected capacity change from 0 to 512 restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 441 ./strace-static-x86_64: Process 441 attached [pid 441] set_robust_list(0x5555900c96a0, 24) = 0 [pid 441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 441] setpgid(0, 0) = 0 [pid 441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 441] write(3, "1000", 4) = 4 [pid 441] close(3) = 0 [pid 441] write(1, "executing program\n", 18executing program ) = 18 [pid 441] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 441] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 441] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 441] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 441] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 442 attached => {parent_tid=[442]}, 88) = 442 [pid 441] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 441] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 442] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 442] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 442] creat("./bus", 000) = 3 [pid 442] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 442] memfd_create("syzkaller", 0 [pid 441] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 441] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 441] rt_sigprocmask(SIG_BLOCK, ~[], [pid 442] <... memfd_create resumed>) = 4 [pid 441] <... rt_sigprocmask resumed>[], 8) = 0 [pid 441] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 442] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 441] <... clone3 resumed> => {parent_tid=[443]}, 88) = 443 [pid 442] <... mmap resumed>) = 0x7ff42f60d000 [pid 441] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 441] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 443 attached [pid 443] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 443] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 443] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 443] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 443] <... futex resumed>) = 1 [pid 443] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 443] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 443] <... futex resumed>) = 1 [pid 443] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 442] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x4000000011e2} --- [pid 443] <... mmap resumed>) = 0x400000000000 [pid 443] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 443] <... futex resumed>) = 1 [pid 443] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 441] <... futex resumed>) = ? [pid 442] +++ killed by SIGBUS +++ [pid 443] +++ killed by SIGBUS +++ [pid 441] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=441, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 444 ./strace-static-x86_64: Process 444 attached [pid 444] set_robust_list(0x5555900c96a0, 24) = 0 [pid 444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 444] setpgid(0, 0) = 0 [pid 444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 444] write(3, "1000", 4) = 4 [pid 444] close(3) = 0 [pid 444] write(1, "executing program\n", 18executing program ) = 18 [pid 444] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 444] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 444] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 444] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 445 attached => {parent_tid=[445]}, 88) = 445 [pid 445] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 445] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 445] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 444] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 445] <... futex resumed>) = 0 [pid 445] creat("./bus", 000) = 3 [pid 445] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 445] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 444] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 444] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 445] <... futex resumed>) = 0 [pid 445] memfd_create("syzkaller", 0) = 4 [pid 445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 444] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 445] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 444] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 444] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0}./strace-static-x86_64: Process 446 attached => {parent_tid=[446]}, 88) = 446 [pid 445] <... write resumed>) = 262144 [pid 445] munmap(0x7ff42f62e000, 138412032 [pid 444] rt_sigprocmask(SIG_SETMASK, [], [pid 446] set_robust_list(0x7ff42f62d9a0, 24 [pid 445] <... munmap resumed>) = 0 [pid 445] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 445] ioctl(5, LOOP_SET_FD, 4 [pid 446] <... set_robust_list resumed>) = 0 [pid 444] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 444] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... ioctl resumed>) = 0 [pid 446] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 446] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 445] close(4 [pid 446] <... mount resumed>) = 0 [pid 446] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] <... futex resumed>) = 1 [pid 446] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 445] <... close resumed>) = 0 [pid 446] <... open resumed>) = 6 [pid 445] close(5 [pid 446] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] <... futex resumed>) = 1 [pid 446] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 445] <... close resumed>) = 0 [pid 445] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 445] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 445] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 445] ioctl(4, LOOP_CLR_FD) = 0 [pid 445] close(4) = 0 [pid 445] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 445] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 446] <... mmap resumed>) = 0x400000000000 [pid 446] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 444] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 445] <... futex resumed>) = 0 [pid 445] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 446] <... futex resumed>) = 1 [pid 445] <... bpf resumed>) = 4 [pid 446] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 445] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 444] <... futex resumed>) = 0 [pid 444] exit_group(0) = ? [pid 446] <... futex resumed>) = ? [pid 445] +++ exited with 0 +++ [pid 446] +++ exited with 0 +++ [pid 444] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=444, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [ 27.264560][ T445] loop0: detected capacity change from 0 to 512 restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 447 ./strace-static-x86_64: Process 447 attached [pid 447] set_robust_list(0x5555900c96a0, 24) = 0 [pid 447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 447] setpgid(0, 0) = 0 [pid 447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 447] write(3, "1000", 4) = 4 [pid 447] close(3executing program ) = 0 [pid 447] write(1, "executing program\n", 18) = 18 [pid 447] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 447] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 447] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 447] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 447] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 447] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[448]}, 88) = 448 [pid 447] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 447] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 448 attached [pid 448] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 448] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 448] creat("./bus", 000) = 3 [pid 448] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] <... futex resumed>) = 0 [pid 447] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 447] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 447] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 447] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[449]}, 88) = 449 [pid 447] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 447] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] <... futex resumed>) = 1 [pid 448] memfd_create("syzkaller", 0) = 4 [pid 448] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 449 attached [pid 448] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 449] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 449] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 449] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 449] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 447] <... futex resumed>) = 0 [pid 447] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 449] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 448] <... write resumed>) = 262144 [pid 447] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] munmap(0x7ff42f60d000, 138412032 [pid 449] <... open resumed>) = 5 [pid 448] <... munmap resumed>) = 0 [pid 448] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 448] ioctl(6, LOOP_SET_FD, 4 [pid 449] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 447] <... futex resumed>) = 0 [pid 448] <... ioctl resumed>) = 0 [pid 448] close(4) = 0 [pid 449] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] close(6 [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 449] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 447] <... futex resumed>) = 0 [pid 447] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] <... close resumed>) = 0 [pid 448] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 448] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 448] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 448] ioctl(4, LOOP_CLR_FD) = 0 [pid 448] close(4) = 0 [pid 448] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 448] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] <... mmap resumed>) = 0x400000000000 [pid 449] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 447] <... futex resumed>) = 0 [pid 447] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 447] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 448] <... futex resumed>) = 0 [pid 448] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 448] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 447] <... futex resumed>) = 0 [pid 447] exit_group(0) = ? [pid 448] +++ exited with 0 +++ [pid 449] +++ exited with 0 +++ [pid 447] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=447, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 27.344684][ T448] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 451 ./strace-static-x86_64: Process 451 attached [pid 451] set_robust_list(0x5555900c96a0, 24) = 0 [pid 451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 451] setpgid(0, 0) = 0 [pid 451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 451] write(3, "1000", 4) = 4 [pid 451] close(3) = 0 [pid 451] write(1, "executing program\n", 18executing program ) = 18 [pid 451] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 451] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 451] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 451] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 451] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 451] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 451] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[452]}, 88) = 452 ./strace-static-x86_64: Process 452 attached [pid 452] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 452] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 452] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 451] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 451] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 452] <... futex resumed>) = 0 [pid 451] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 452] creat("./bus", 000) = 3 [pid 452] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 452] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 451] <... futex resumed>) = 0 [pid 451] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 452] <... futex resumed>) = 0 [pid 451] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] memfd_create("syzkaller", 0) = 4 [pid 452] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 451] <... futex resumed>) = 0 [pid 451] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 451] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 451] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 451] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0}./strace-static-x86_64: Process 453 attached [pid 452] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 453] set_robust_list(0x7ff42f62d9a0, 24 [pid 451] <... clone3 resumed> => {parent_tid=[453]}, 88) = 453 [pid 451] rt_sigprocmask(SIG_SETMASK, [], [pid 453] <... set_robust_list resumed>) = 0 [pid 453] rt_sigprocmask(SIG_SETMASK, [], [pid 451] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 451] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 451] <... futex resumed>) = 0 [pid 453] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 451] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 453] <... mount resumed>) = 0 [pid 453] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] <... write resumed>) = 262144 [pid 452] munmap(0x7ff42f62e000, 138412032 [pid 451] <... futex resumed>) = 0 [pid 453] <... futex resumed>) = 1 [pid 452] <... munmap resumed>) = 0 [pid 452] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 452] ioctl(5, LOOP_SET_FD, 4 [pid 453] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 451] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 451] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 452] <... ioctl resumed>) = 0 [pid 453] <... open resumed>) = 6 [pid 453] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... futex resumed>) = 0 [pid 451] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 451] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 453] <... futex resumed>) = 1 [pid 453] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 452] close(4) = 0 [pid 452] close(5 [pid 453] <... mmap resumed>) = 0x400000000000 [pid 453] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... futex resumed>) = 0 [pid 451] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 451] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 453] <... futex resumed>) = 1 [pid 453] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 453] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... futex resumed>) = 0 [pid 453] <... futex resumed>) = 1 [pid 453] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] <... close resumed>) = 0 [pid 452] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 452] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 452] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 452] ioctl(5, LOOP_CLR_FD) = 0 [pid 452] close(5) = 0 [pid 452] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] exit_group(0) = ? [pid 452] <... futex resumed>) = ? [pid 452] +++ exited with 0 +++ [pid 453] <... futex resumed>) = ? [pid 453] +++ exited with 0 +++ [pid 451] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=451, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 454 ./strace-static-x86_64: Process 454 attached [pid 454] set_robust_list(0x5555900c96a0, 24) = 0 [pid 454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 454] setpgid(0, 0) = 0 [pid 454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 454] write(3, "1000", 4) = 4 [pid 454] close(3) = 0 [pid 454] write(1, "executing program\n", 18executing program ) = 18 [pid 454] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 454] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 454] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 454] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 454] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 454] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[455]}, 88) = 455 [pid 454] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 454] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 454] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 455 attached [pid 455] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 455] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 455] creat("./bus", 000) = 3 [pid 455] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] <... futex resumed>) = 0 [pid 454] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 454] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 454] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 454] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 454] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[456]}, 88) = 456 [pid 454] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 454] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 454] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 455] <... futex resumed>) = 1 [pid 455] memfd_create("syzkaller", 0) = 4 [pid 455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 456 attached [pid 455] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 455] munmap(0x7ff42f60d000, 138412032) = 0 [pid 455] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 27.438129][ T452] loop0: detected capacity change from 0 to 512 [pid 455] ioctl(5, LOOP_SET_FD, 4) = 0 [pid 455] close(4) = 0 [pid 455] close(5 [pid 456] set_robust_list(0x7ff437a2d9a0, 24 [pid 455] <... close resumed>) = 0 [pid 456] <... set_robust_list resumed>) = 0 [pid 456] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 456] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 456] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 456] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 455] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 454] <... futex resumed>) = 0 [pid 454] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 454] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 456] <... futex resumed>) = 0 [pid 456] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 456] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 454] <... futex resumed>) = 0 [pid 454] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 454] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 456] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 454] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 454] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 456] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 456] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] <... futex resumed>) = 0 [pid 456] <... futex resumed>) = 1 [ 27.494795][ T455] loop0: detected capacity change from 0 to 512 [ 27.504342][ T455] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 27.516264][ T455] EXT4-fs error (device loop0): ext4_free_branches:1030: inode #16: comm syz-executor316: invalid indirect mapped block 512 (level 0) [ 27.530563][ T455] EXT4-fs (loop0): Remounting filesystem read-only [ 27.537343][ T455] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 27.550376][ T455] EXT4-fs (loop0): Remounting filesystem read-only [ 27.556979][ T455] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5837: Corrupt filesystem [ 27.566464][ T455] EXT4-fs (loop0): Remounting filesystem read-only [ 27.572812][ T455] EXT4-fs error (device loop0) in ext4_orphan_del:305: Corrupt filesystem [ 27.581345][ T455] EXT4-fs (loop0): Remounting filesystem read-only [ 27.587682][ T455] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 27.600762][ T455] EXT4-fs (loop0): Remounting filesystem read-only [ 27.607097][ T455] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5837: Corrupt filesystem [ 27.616613][ T455] EXT4-fs (loop0): Remounting filesystem read-only [ 27.622961][ T455] EXT4-fs error (device loop0): ext4_truncate:4303: inode #16: comm syz-executor316: mark_inode_dirty error [ 27.634442][ T455] EXT4-fs (loop0): Remounting filesystem read-only [pid 456] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 454] exit_group(0 [pid 456] <... futex resumed>) = ? [pid 454] <... exit_group resumed>) = ? [pid 456] +++ exited with 0 +++ [pid 455] <... mount resumed>) = ? [pid 455] +++ exited with 0 +++ [pid 454] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=454, si_uid=0, si_status=0, si_utime=0, si_stime=18} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 27.640761][ T455] EXT4-fs error (device loop0) in ext4_process_orphan:347: Corrupt filesystem [ 27.649687][ T455] EXT4-fs (loop0): Remounting filesystem read-only [ 27.656146][ T455] EXT4-fs (loop0): 1 orphan inode deleted [ 27.661742][ T455] EXT4-fs (loop0): 1 truncate cleaned up [ 27.667147][ T455] EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x0000000000010000,block_validity,quota,. Quota mode: writeback. openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 459 ./strace-static-x86_64: Process 459 attached [pid 459] set_robust_list(0x5555900c96a0, 24) = 0 [pid 459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 459] setpgid(0, 0) = 0 [pid 459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 459] write(3, "1000", 4) = 4 [pid 459] close(3) = 0 [pid 459] write(1, "executing program\n", 18executing program ) = 18 [pid 459] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 459] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 459] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 459] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 459] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 459] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 459] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 460 attached => {parent_tid=[460]}, 88) = 460 [pid 459] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 459] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 459] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 460] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 460] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 460] creat("./bus", 000) = 3 [pid 460] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 459] <... futex resumed>) = 0 [pid 459] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 459] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 459] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 459] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 459] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 459] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 461 attached [pid 460] memfd_create("syzkaller", 0) = 4 [pid 459] <... clone3 resumed> => {parent_tid=[461]}, 88) = 461 [pid 459] rt_sigprocmask(SIG_SETMASK, [], [pid 460] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 459] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 460] <... mmap resumed>) = 0x7ff42f60d000 [pid 459] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 461] set_robust_list(0x7ff437a2d9a0, 24 [pid 459] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] <... set_robust_list resumed>) = 0 [pid 461] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 461] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 460] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 461] <... mount resumed>) = 0 [pid 461] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 459] <... futex resumed>) = 0 [pid 459] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 459] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 460] <... write resumed>) = 262144 [pid 460] munmap(0x7ff42f60d000, 138412032) = 0 [pid 460] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 460] ioctl(5, LOOP_SET_FD, 4) = 0 [pid 461] <... open resumed>) = 6 [pid 460] close(4) = 0 [pid 460] close(5 [pid 461] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... close resumed>) = 0 [pid 460] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 460] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 460] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 460] ioctl(4, LOOP_CLR_FD) = 0 [pid 460] close(4 [pid 461] <... futex resumed>) = 1 [pid 459] <... futex resumed>) = 0 [pid 459] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 459] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 460] <... close resumed>) = 0 [pid 460] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 460] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 461] <... mmap resumed>) = 0x400000000000 [pid 461] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 459] <... futex resumed>) = 0 [pid 459] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 459] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 461] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 460] <... futex resumed>) = 0 [pid 460] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 460] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 459] <... futex resumed>) = 0 [pid 460] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] exit_group(0) = ? [pid 461] <... futex resumed>) = ? [pid 460] <... futex resumed>) = ? [pid 460] +++ exited with 0 +++ [pid 461] +++ exited with 0 +++ [pid 459] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=459, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [ 27.866325][ T460] loop0: detected capacity change from 0 to 512 restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 462 ./strace-static-x86_64: Process 462 attached [pid 462] set_robust_list(0x5555900c96a0, 24) = 0 [pid 462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 462] setpgid(0, 0) = 0 [pid 462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 462] write(3, "1000", 4) = 4 [pid 462] close(3) = 0 [pid 462] write(1, "executing program\n", 18executing program ) = 18 [pid 462] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 462] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 462] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 462] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 463 attached => {parent_tid=[463]}, 88) = 463 [pid 463] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 463] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 463] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 462] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 463] <... futex resumed>) = 0 [pid 463] creat("./bus", 000) = 3 [pid 462] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 463] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 463] <... futex resumed>) = 0 [pid 463] memfd_create("syzkaller", 0 [pid 462] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 462] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 463] <... memfd_create resumed>) = 4 [pid 462] rt_sigprocmask(SIG_BLOCK, ~[], [pid 463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 462] <... rt_sigprocmask resumed>[], 8) = 0 [pid 462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 464 attached => {parent_tid=[464]}, 88) = 464 [pid 464] set_robust_list(0x7ff437a2d9a0, 24 [pid 462] rt_sigprocmask(SIG_SETMASK, [], [pid 464] <... set_robust_list resumed>) = 0 [pid 464] rt_sigprocmask(SIG_SETMASK, [], [pid 462] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 464] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 462] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 464] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 464] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 464] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] <... futex resumed>) = 1 [pid 462] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] <... futex resumed>) = 0 [pid 464] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 464] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... futex resumed>) = 0 [pid 462] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] <... futex resumed>) = 1 [pid 464] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 462] <... futex resumed>) = 0 [pid 462] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 464] <... futex resumed>) = 1 [pid 464] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 462] <... futex resumed>) = ? [pid 463] <... write resumed>) = ? [pid 464] +++ killed by SIGBUS +++ [pid 463] +++ killed by SIGBUS +++ [pid 462] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=462, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 465 ./strace-static-x86_64: Process 465 attached [pid 465] set_robust_list(0x5555900c96a0, 24) = 0 [pid 465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 465] setpgid(0, 0) = 0 [pid 465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 465] write(3, "1000", 4) = 4 [pid 465] close(3) = 0 [pid 465] write(1, "executing program\n", 18executing program ) = 18 [pid 465] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 465] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 465] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[466]}, 88) = 466 [pid 465] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 465] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 466 attached [pid 466] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 466] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 466] creat("./bus", 000) = 3 [pid 466] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = 0 [pid 465] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 465] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[467]}, 88) = 467 [pid 465] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 465] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... futex resumed>) = 1 [pid 466] memfd_create("syzkaller", 0) = 4 [pid 466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 467 attached [pid 467] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 467] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 466] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 467] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 467] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 467] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 465] <... futex resumed>) = 0 [pid 465] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 465] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 467] <... futex resumed>) = 0 [pid 467] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 467] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... write resumed>) = 262144 [pid 467] <... futex resumed>) = 1 [pid 467] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 466] munmap(0x7ff42f60d000, 138412032 [pid 465] <... futex resumed>) = 0 [pid 465] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 465] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 467] <... futex resumed>) = 0 [pid 466] <... munmap resumed>) = 0 [pid 467] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 465] <... futex resumed>) = 0 [pid 465] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 467] <... futex resumed>) = 1 [pid 467] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 465] <... futex resumed>) = ? [pid 466] +++ killed by SIGBUS +++ [pid 467] +++ killed by SIGBUS +++ [pid 465] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=465, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 468 ./strace-static-x86_64: Process 468 attached [pid 468] set_robust_list(0x5555900c96a0, 24) = 0 [pid 468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 468] setpgid(0, 0) = 0 [pid 468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 468] write(3, "1000", 4) = 4 [pid 468] close(3) = 0 [pid 468] write(1, "executing program\n", 18) = 18 [pid 468] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 468] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 468] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 468] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 468] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 468] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 468] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[469]}, 88) = 469 [pid 468] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 468] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 468] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 469 attached [pid 469] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 469] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 469] creat("./bus", 000) = 3 [pid 469] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... futex resumed>) = 0 [pid 468] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... futex resumed>) = 1 [pid 468] <... futex resumed>) = 0 [pid 468] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 468] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 468] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 468] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 468] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[470]}, 88) = 470 [pid 468] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 468] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 468] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] memfd_create("syzkaller", 0) = 4 ./strace-static-x86_64: Process 470 attached [pid 470] set_robust_list(0x7ff437a2d9a0, 24 [pid 469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 470] <... set_robust_list resumed>) = 0 [pid 470] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 470] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 469] <... mmap resumed>) = 0x7ff42f60d000 [pid 470] <... mount resumed>) = 0 [pid 470] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... futex resumed>) = 0 [pid 470] <... futex resumed>) = 1 [pid 468] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 468] <... futex resumed>) = 0 [pid 468] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 470] <... open resumed>) = 5 [pid 470] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 470] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... futex resumed>) = 0 [pid 468] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 470] <... futex resumed>) = 0 [pid 468] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 470] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 469] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000001290} --- [pid 468] <... futex resumed>) = 0 [pid 470] <... futex resumed>) = ? [pid 470] +++ killed by SIGBUS +++ [pid 469] +++ killed by SIGBUS +++ [pid 468] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=468, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 471 attached , child_tidptr=0x5555900c9690) = 471 [pid 471] set_robust_list(0x5555900c96a0, 24) = 0 [pid 471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 471] setpgid(0, 0) = 0 [pid 471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 471] write(3, "1000", 4) = 4 [pid 471] close(3) = 0 [pid 471] write(1, "executing program\n", 18executing program ) = 18 [pid 471] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 471] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 471] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 471] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 471] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 471] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[472]}, 88) = 472 [pid 471] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 471] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 472 attached [pid 472] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 472] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 472] creat("./bus", 000) = 3 [pid 472] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 471] <... futex resumed>) = 0 [pid 471] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 471] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 471] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 471] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[473]}, 88) = 473 [pid 471] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 471] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 473 attached [pid 472] memfd_create("syzkaller", 0 [pid 473] set_robust_list(0x7ff437a2d9a0, 24 [pid 472] <... memfd_create resumed>) = 4 [pid 473] <... set_robust_list resumed>) = 0 [pid 472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 473] rt_sigprocmask(SIG_SETMASK, [], [pid 472] <... mmap resumed>) = 0x7ff42f60d000 [pid 473] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 472] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 473] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 472] <... write resumed>) = 262144 [pid 472] munmap(0x7ff42f60d000, 138412032) = 0 [pid 472] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 473] <... mount resumed>) = 0 [pid 473] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... openat resumed>) = 5 [pid 473] <... futex resumed>) = 1 [pid 472] ioctl(5, LOOP_SET_FD, 4 [pid 471] <... futex resumed>) = 0 [pid 471] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 472] <... ioctl resumed>) = 0 [pid 473] <... open resumed>) = 6 [pid 473] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 473] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... futex resumed>) = 0 [pid 471] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 473] <... futex resumed>) = 0 [pid 473] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 472] close(4 [pid 471] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 472] <... close resumed>) = 0 [pid 472] close(5) = 0 [pid 473] <... mmap resumed>) = 0x400000000000 [pid 472] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 472] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 472] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 472] ioctl(4, LOOP_CLR_FD) = 0 [pid 472] close(4) = 0 [pid 472] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 472] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 473] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 471] <... futex resumed>) = 0 [pid 471] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 471] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 472] <... futex resumed>) = 0 [pid 472] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 473] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 471] <... futex resumed>) = 0 [pid 471] exit_group(0) = ? [pid 473] <... futex resumed>) = ? [pid 473] +++ exited with 0 +++ [pid 472] +++ exited with 0 +++ [pid 471] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=471, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 28.010040][ T472] loop0: detected capacity change from 0 to 512 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 474 ./strace-static-x86_64: Process 474 attached [pid 474] set_robust_list(0x5555900c96a0, 24) = 0 [pid 474] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 474] setpgid(0, 0) = 0 [pid 474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 474] write(3, "1000", 4) = 4 [pid 474] close(3) = 0 [pid 474] write(1, "executing program\n", 18executing program ) = 18 [pid 474] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 474] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 474] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 474] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 474] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 474] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[475]}, 88) = 475 [pid 474] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 474] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 475 attached [pid 475] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 475] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 475] creat("./bus", 000) = 3 [pid 475] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... futex resumed>) = 0 [pid 474] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 474] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 474] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 474] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 476 attached => {parent_tid=[476]}, 88) = 476 [pid 474] rt_sigprocmask(SIG_SETMASK, [], [pid 476] set_robust_list(0x7ff437a2d9a0, 24 [pid 474] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 474] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] <... futex resumed>) = 1 [pid 475] memfd_create("syzkaller", 0 [pid 476] <... set_robust_list resumed>) = 0 [pid 475] <... memfd_create resumed>) = 4 [pid 475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 476] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 476] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 476] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 474] <... futex resumed>) = 0 [pid 474] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 476] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 476] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 474] <... futex resumed>) = 0 [pid 474] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 474] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 476] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = ? [pid 476] +++ killed by SIGBUS +++ [pid 475] +++ killed by SIGBUS +++ [pid 474] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=474, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 477 ./strace-static-x86_64: Process 477 attached [pid 477] set_robust_list(0x5555900c96a0, 24) = 0 [pid 477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 477] setpgid(0, 0) = 0 [pid 477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 477] write(3, "1000", 4) = 4 [pid 477] close(3) = 0 [pid 477] write(1, "executing program\n", 18executing program ) = 18 [pid 477] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 477] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 477] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 477] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 477] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 477] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 477] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 478 attached [pid 478] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 478] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 478] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 477] <... clone3 resumed> => {parent_tid=[478]}, 88) = 478 [pid 477] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 477] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 478] <... futex resumed>) = 0 [pid 478] creat("./bus", 000) = 3 [pid 478] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 478] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 477] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 477] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... futex resumed>) = 0 [pid 478] memfd_create("syzkaller", 0) = 4 [pid 478] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 477] <... futex resumed>) = 1 [pid 477] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 477] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 478] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 477] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 477] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 477] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0} [pid 478] <... write resumed>) = 262144 [pid 478] munmap(0x7ff42f62e000, 138412032) = 0 [pid 478] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 478] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 479 attached [pid 477] <... clone3 resumed> => {parent_tid=[479]}, 88) = 479 [pid 478] <... ioctl resumed>) = 0 [pid 478] close(4 [pid 477] rt_sigprocmask(SIG_SETMASK, [], [pid 478] <... close resumed>) = 0 [pid 477] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 478] close(5 [pid 477] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... close resumed>) = 0 [pid 477] <... futex resumed>) = 0 [pid 478] mkdir("./bus", 0777 [pid 477] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 479] set_robust_list(0x7ff42f62d9a0, 24) = 0 [pid 479] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 479] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 479] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 479] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 477] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... futex resumed>) = 0 [pid 477] <... futex resumed>) = 1 [pid 479] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 477] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 479] <... open resumed>) = 4 [pid 479] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 477] <... futex resumed>) = 0 [pid 479] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 477] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 477] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 478] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 478] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 478] ioctl(5, LOOP_CLR_FD) = 0 [pid 478] close(5 [pid 479] <... mmap resumed>) = 0x400000000000 [pid 478] <... close resumed>) = 0 [pid 478] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 478] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 479] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 477] <... futex resumed>) = 0 [pid 477] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 477] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 478] <... futex resumed>) = 0 [pid 478] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 479] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 478] <... bpf resumed>) = 5 [pid 478] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 477] <... futex resumed>) = 0 [pid 477] exit_group(0) = ? [pid 479] <... futex resumed>) = ? [pid 479] +++ exited with 0 +++ [ 28.109161][ T478] loop0: detected capacity change from 0 to 512 [pid 478] +++ exited with 0 +++ [pid 477] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=477, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 executing program clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 480 ./strace-static-x86_64: Process 480 attached [pid 480] set_robust_list(0x5555900c96a0, 24) = 0 [pid 480] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 480] setpgid(0, 0) = 0 [pid 480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 480] write(3, "1000", 4) = 4 [pid 480] close(3) = 0 [pid 480] write(1, "executing program\n", 18) = 18 [pid 480] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 480] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 480] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 480] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 480] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 480] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[481]}, 88) = 481 [pid 480] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 480] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 481 attached [pid 481] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 481] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 481] creat("./bus", 000) = 3 [pid 481] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 480] <... futex resumed>) = 0 [pid 480] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 480] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 480] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 480] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[482]}, 88) = 482 [pid 480] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 480] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 481] memfd_create("syzkaller", 0) = 4 [pid 481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 482 attached [pid 482] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 482] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 482] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 482] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 480] <... futex resumed>) = 0 [pid 480] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] <... futex resumed>) = 1 [pid 482] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 482] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] <... futex resumed>) = 0 [pid 480] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] <... futex resumed>) = 1 [pid 482] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 480] <... futex resumed>) = 0 [pid 480] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 480] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 482] <... futex resumed>) = 1 [pid 482] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 481] <... write resumed>) = ? [pid 480] <... futex resumed>) = ? [pid 481] +++ killed by SIGBUS +++ [pid 482] +++ killed by SIGBUS +++ [pid 480] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=480, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) executing program close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 483 ./strace-static-x86_64: Process 483 attached [pid 483] set_robust_list(0x5555900c96a0, 24) = 0 [pid 483] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 483] setpgid(0, 0) = 0 [pid 483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 483] write(3, "1000", 4) = 4 [pid 483] close(3) = 0 [pid 483] write(1, "executing program\n", 18) = 18 [pid 483] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 483] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 483] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 483] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 483] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 483] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 483] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[484]}, 88) = 484 [pid 483] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 483] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 483] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 484 attached [pid 484] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 484] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 484] creat("./bus", 000) = 3 [pid 484] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 484] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 483] <... futex resumed>) = 0 [pid 483] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 483] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 483] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 483] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 483] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 484] <... futex resumed>) = 0 [pid 483] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 484] memfd_create("syzkaller", 0) = 4 [pid 483] <... clone3 resumed> => {parent_tid=[485]}, 88) = 485 [pid 483] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 483] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 483] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 485 attached [pid 485] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 485] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 485] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 483] <... futex resumed>) = 0 [pid 483] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 483] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 485] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 485] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 483] <... futex resumed>) = 0 [pid 483] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 483] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 485] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 483] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 483] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 485] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 483] <... futex resumed>) = ? [pid 484] +++ killed by SIGBUS +++ [pid 485] +++ killed by SIGBUS +++ [pid 483] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=483, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 486 ./strace-static-x86_64: Process 486 attached [pid 486] set_robust_list(0x5555900c96a0, 24) = 0 executing program [pid 486] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 486] setpgid(0, 0) = 0 [pid 486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 486] write(3, "1000", 4) = 4 [pid 486] close(3) = 0 [pid 486] write(1, "executing program\n", 18) = 18 [pid 486] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 486] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 486] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 486] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 486] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 486] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 486] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[487]}, 88) = 487 [pid 486] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 486] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 486] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 487 attached [pid 487] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 487] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 487] creat("./bus", 000) = 3 [pid 487] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = 0 [pid 486] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 486] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 486] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 486] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 486] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 486] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[488]}, 88) = 488 [pid 487] <... futex resumed>) = 1 [pid 486] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 486] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 486] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 488 attached [pid 488] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 488] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 488] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 488] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = 0 [pid 486] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 486] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] <... futex resumed>) = 1 [pid 488] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 488] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = 0 [pid 486] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 486] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] <... futex resumed>) = 1 [pid 488] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 487] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000040} --- [pid 486] <... futex resumed>) = 0 [pid 486] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 486] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 488] <... futex resumed>) = 1 [pid 488] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 486] <... futex resumed>) = ? [pid 487] +++ killed by SIGBUS +++ [pid 488] +++ killed by SIGBUS +++ [pid 486] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=486, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 489 ./strace-static-x86_64: Process 489 attached [pid 489] set_robust_list(0x5555900c96a0, 24) = 0 [pid 489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 489] setpgid(0, 0) = 0 [pid 489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 489] write(3, "1000", 4) = 4 [pid 489] close(3) = 0 [pid 489] write(1, "executing program\n", 18executing program ) = 18 [pid 489] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 489] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 489] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 489] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 489] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 489] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 489] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 490 attached [pid 490] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 490] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 490] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 489] <... clone3 resumed> => {parent_tid=[490]}, 88) = 490 [pid 489] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 489] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 490] <... futex resumed>) = 0 [pid 490] creat("./bus", 000 [pid 489] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 490] <... creat resumed>) = 3 [pid 490] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 489] <... futex resumed>) = 0 [pid 489] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 489] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 489] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 489] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 489] rt_sigprocmask(SIG_BLOCK, ~[], [pid 490] memfd_create("syzkaller", 0 [pid 489] <... rt_sigprocmask resumed>[], 8) = 0 [pid 489] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 490] <... memfd_create resumed>) = 4 [pid 489] <... clone3 resumed> => {parent_tid=[491]}, 88) = 491 [pid 490] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 489] rt_sigprocmask(SIG_SETMASK, [], [pid 490] <... mmap resumed>) = 0x7ff42f60d000 [pid 489] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 489] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 491 attached [pid 489] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 491] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 490] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 491] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 491] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 489] <... futex resumed>) = 0 [pid 489] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 489] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 490] <... write resumed>) = 262144 [pid 490] munmap(0x7ff42f60d000, 138412032) = 0 [pid 490] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 490] ioctl(5, LOOP_SET_FD, 4 [pid 491] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 490] <... ioctl resumed>) = 0 [pid 490] close(4 [pid 491] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 489] <... futex resumed>) = 0 [pid 490] <... close resumed>) = 0 [pid 489] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] close(5 [pid 489] <... futex resumed>) = 0 [pid 489] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 490] <... close resumed>) = 0 [pid 490] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 490] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 490] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 490] ioctl(4, LOOP_CLR_FD) = 0 [pid 490] close(4) = 0 [pid 490] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 490] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] <... mmap resumed>) = 0x400000000000 [pid 491] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 489] <... futex resumed>) = 0 [pid 489] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 489] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 490] <... futex resumed>) = 0 [pid 490] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 491] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] <... bpf resumed>) = 4 [pid 490] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 489] <... futex resumed>) = 0 [pid 489] exit_group(0) = ? [pid 491] <... futex resumed>) = ? [pid 490] +++ exited with 0 +++ [ 28.246365][ T490] loop0: detected capacity change from 0 to 512 [pid 491] +++ exited with 0 +++ [pid 489] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=489, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 492 ./strace-static-x86_64: Process 492 attached [pid 492] set_robust_list(0x5555900c96a0, 24executing program ) = 0 [pid 492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 492] setpgid(0, 0) = 0 [pid 492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 492] write(3, "1000", 4) = 4 [pid 492] close(3) = 0 [pid 492] write(1, "executing program\n", 18) = 18 [pid 492] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 492] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 492] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 492] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 492] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 492] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 492] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[493]}, 88) = 493 [pid 492] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 492] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 492] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 493 attached [pid 493] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 493] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 493] creat("./bus", 000) = 3 [pid 493] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] <... futex resumed>) = 0 [pid 492] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 492] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 492] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 492] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 492] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 492] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[494]}, 88) = 494 [pid 492] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 492] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 492] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 493] <... futex resumed>) = 1 [pid 493] memfd_create("syzkaller", 0) = 4 [pid 493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 494 attached [pid 493] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 494] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 494] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 494] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 494] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 492] <... futex resumed>) = 0 [pid 493] <... write resumed>) = 262144 [pid 492] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 493] munmap(0x7ff42f60d000, 138412032) = 0 [pid 493] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 492] <... futex resumed>) = 0 [pid 493] ioctl(5, LOOP_SET_FD, 4 [pid 492] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] <... open resumed>) = 6 [pid 493] <... ioctl resumed>) = 0 [pid 493] close(4) = 0 [pid 493] close(5 [pid 494] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... close resumed>) = 0 [pid 494] <... futex resumed>) = 1 [pid 492] <... futex resumed>) = 0 [pid 494] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 492] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 492] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 493] mkdir(0x400000000000, 0777 [pid 494] <... mmap resumed>) = 0x400000000000 [pid 494] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 492] <... futex resumed>) = 0 [pid 492] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 492] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 494] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 494] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 492] <... futex resumed>) = 0 [pid 494] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 493] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 493] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 493] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 493] ioctl(5, LOOP_CLR_FD) = 0 [pid 493] close(5) = 0 [pid 493] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 492] exit_group(0) = ? [pid 494] <... futex resumed>) = ? [pid 494] +++ exited with 0 +++ [pid 493] <... futex resumed>) = ? [pid 493] +++ exited with 0 +++ [pid 492] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=492, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 495 ./strace-static-x86_64: Process 495 attached [pid 495] set_robust_list(0x5555900c96a0, 24) = 0 [pid 495] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 495] setpgid(0, 0) = 0 [pid 495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 495] write(3, "1000", 4) = 4 [pid 495] close(3) = 0 [pid 495] write(1, "executing program\n", 18executing program ) = 18 [pid 495] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 495] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 495] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 495] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 495] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 495] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 495] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[496]}, 88) = 496 ./strace-static-x86_64: Process 496 attached [pid 496] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 496] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 496] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 495] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 496] <... futex resumed>) = 0 [pid 496] creat("./bus", 000 [pid 495] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] <... creat resumed>) = 3 [pid 496] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 496] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] <... futex resumed>) = 0 [pid 495] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 496] <... futex resumed>) = 0 [pid 496] memfd_create("syzkaller", 0) = 4 [pid 495] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 495] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 495] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 495] rt_sigprocmask(SIG_BLOCK, ~[], [pid 496] <... mmap resumed>) = 0x7ff42f60d000 [pid 495] <... rt_sigprocmask resumed>[], 8) = 0 [pid 496] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 495] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[497]}, 88) = 497 [pid 495] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 495] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] <... write resumed>) = 262144 [pid 495] <... futex resumed>) = 0 [pid 495] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 497 attached [pid 497] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 497] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 497] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 497] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] <... futex resumed>) = 0 [pid 495] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 495] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] <... futex resumed>) = 1 [pid 497] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 496] munmap(0x7ff42f60d000, 138412032 [pid 497] <... open resumed>) = 5 [pid 497] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] <... munmap resumed>) = 0 [pid 497] <... futex resumed>) = 1 [pid 496] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 495] <... futex resumed>) = 0 [pid 497] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] <... openat resumed>) = 6 [pid 496] ioctl(6, LOOP_SET_FD, 4 [pid 495] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 495] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] <... futex resumed>) = 0 [ 28.328302][ T493] loop0: detected capacity change from 0 to 512 [pid 497] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 496] <... ioctl resumed>) = 0 [pid 496] close(4) = 0 [pid 496] close(6) = 0 [pid 496] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 496] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 496] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 496] ioctl(4, LOOP_CLR_FD) = 0 [pid 496] close(4) = 0 [pid 496] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 496] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 497] <... mmap resumed>) = 0x400000000000 [pid 497] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] <... futex resumed>) = 0 [pid 495] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 495] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 496] <... futex resumed>) = 0 [pid 496] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 496] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] <... futex resumed>) = 0 [pid 495] exit_group(0) = ? [pid 496] <... futex resumed>) = ? [pid 496] +++ exited with 0 +++ [pid 497] <... futex resumed>) = ? [pid 497] +++ exited with 0 +++ [pid 495] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=495, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 499 ./strace-static-x86_64: Process 499 attached [pid 499] set_robust_list(0x5555900c96a0, 24) = 0 [pid 499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 499] setpgid(0, 0) = 0 [pid 499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 499] write(3, "1000", 4) = 4 [pid 499] close(3) = 0 [pid 499] write(1, "executing program\n", 18executing program ) = 18 [pid 499] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 499] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 499] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 499] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 499] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[500]}, 88) = 500 [pid 499] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 499] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 500 attached [pid 500] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 500] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 500] creat("./bus", 000) = 3 [pid 500] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... futex resumed>) = 0 [pid 499] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 499] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 499] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 499] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[501]}, 88) = 501 [pid 499] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 499] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 500] <... futex resumed>) = 1 [pid 500] memfd_create("syzkaller", 0) = 4 [pid 500] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 501 attached [ 28.384888][ T496] loop0: detected capacity change from 0 to 512 [pid 500] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 501] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 501] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 501] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 501] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... futex resumed>) = 0 [pid 499] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] <... futex resumed>) = 1 [pid 500] <... write resumed>) = 262144 [pid 500] munmap(0x7ff42f60d000, 138412032 [pid 501] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 500] <... munmap resumed>) = 0 [pid 501] <... open resumed>) = 5 [pid 500] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 500] ioctl(6, LOOP_SET_FD, 4 [pid 501] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... futex resumed>) = 0 [pid 499] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] <... futex resumed>) = 1 [pid 501] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 500] <... ioctl resumed>) = 0 [pid 500] close(4) = 0 [pid 500] close(6) = 0 [pid 500] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 500] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 500] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 500] ioctl(4, LOOP_CLR_FD) = 0 [pid 500] close(4) = 0 [pid 500] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 500] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] <... mmap resumed>) = 0x400000000000 [pid 501] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... futex resumed>) = 0 [pid 499] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 499] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 500] <... futex resumed>) = 0 [pid 500] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 500] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... futex resumed>) = 0 [pid 499] exit_group(0) = ? [pid 500] <... futex resumed>) = ? [pid 500] +++ exited with 0 +++ [pid 501] <... futex resumed>) = ? [pid 501] +++ exited with 0 +++ [pid 499] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=499, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 502 attached , child_tidptr=0x5555900c9690) = 502 [pid 502] set_robust_list(0x5555900c96a0, 24) = 0 [pid 502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 502] setpgid(0, 0) = 0 [pid 502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 502] write(3, "1000", 4) = 4 [pid 502] close(3) = 0 executing program [pid 502] write(1, "executing program\n", 18) = 18 [pid 502] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 502] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 502] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 502] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 502] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[503]}, 88) = 503 [pid 502] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 502] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 503 attached [pid 503] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 503] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 503] creat("./bus", 000) = 3 [pid 503] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... futex resumed>) = 0 [pid 502] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 502] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 502] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 502] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[504]}, 88) = 504 [pid 502] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 502] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... futex resumed>) = 1 [pid 503] memfd_create("syzkaller", 0) = 4 [pid 503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 504 attached [pid 503] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 504] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 504] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 504] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 504] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 502] <... futex resumed>) = 0 [pid 502] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 504] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 502] <... futex resumed>) = 0 [pid 502] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 503] <... write resumed>) = 262144 [pid 503] munmap(0x7ff42f60d000, 138412032) = 0 [pid 504] <... mmap resumed>) = 0x400000000000 [pid 503] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 504] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... openat resumed>) = 6 [pid 503] ioctl(6, LOOP_SET_FD, 4 [pid 504] <... futex resumed>) = 1 [pid 502] <... futex resumed>) = 0 [pid 502] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 28.448823][ T500] loop0: detected capacity change from 0 to 512 [pid 502] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 503] <... ioctl resumed>) = 0 [pid 503] close(4) = 0 [pid 503] close(6 [pid 504] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 503] <... close resumed>) = 0 [pid 503] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 504] <... bpf resumed>) = 4 [pid 503] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 503] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 503] ioctl(6, LOOP_CLR_FD) = 0 [pid 503] close(6) = 0 [pid 503] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 503] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 504] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... futex resumed>) = 0 [pid 502] exit_group(0) = ? [pid 503] <... futex resumed>) = ? [pid 503] +++ exited with 0 +++ [pid 504] <... futex resumed>) = ? [pid 504] +++ exited with 0 +++ [pid 502] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=502, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 28.500318][ T503] loop0: detected capacity change from 0 to 512 [ 28.501733][ T504] blk_update_request: I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 32 prio class 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 505 ./strace-static-x86_64: Process 505 attached [pid 505] set_robust_list(0x5555900c96a0, 24) = 0 [pid 505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 505] setpgid(0, 0) = 0 [pid 505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 505] write(3, "1000", 4) = 4 [pid 505] close(3) = 0 [pid 505] write(1, "executing program\n", 18) = 18 [pid 505] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 505] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 505] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[506]}, 88) = 506 [pid 505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 505] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 506 attached [pid 506] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 506] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 506] creat("./bus", 000) = 3 [pid 506] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 505] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[507]}, 88) = 507 [pid 505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 505] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] <... futex resumed>) = 1 [pid 506] memfd_create("syzkaller", 0) = 4 [pid 506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 506] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 506] munmap(0x7ff42f60d000, 138412032) = 0 [pid 506] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 506] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 507 attached ) = 0 [pid 506] close(4) = 0 [pid 506] close(5) = 0 [pid 506] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 506] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 507] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 507] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 507] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 507] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 507] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 507] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 507] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 507] <... futex resumed>) = 1 [pid 507] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 507] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 [pid 507] <... futex resumed>) = 1 [pid 507] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 506] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 506] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 506] ioctl(6, LOOP_CLR_FD) = 0 [pid 506] close(6) = 0 [pid 506] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 506] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] exit_group(0) = ? [pid 506] <... futex resumed>) = ? [pid 506] +++ exited with 0 +++ [pid 507] <... futex resumed>) = ? [pid 507] +++ exited with 0 +++ [pid 505] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=505, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 28.571712][ T506] loop0: detected capacity change from 0 to 512 [ 28.582109][ T506] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 28.592427][ T506] EXT4-fs (loop0): fragment/cluster size (2048) != block size (1024) openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 508 ./strace-static-x86_64: Process 508 attached [pid 508] set_robust_list(0x5555900c96a0, 24) = 0 [pid 508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 508] setpgid(0, 0) = 0 [pid 508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 508] write(3, "1000", 4) = 4 [pid 508] close(3) = 0 [pid 508] write(1, "executing program\n", 18executing program ) = 18 [pid 508] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 508] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 508] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 508] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 508] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[509]}, 88) = 509 [pid 508] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 508] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 509 attached [pid 509] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 509] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 509] creat("./bus", 000) = 3 [pid 509] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 508] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 508] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 508] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[510]}, 88) = 510 [pid 508] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 508] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] <... futex resumed>) = 1 [pid 509] memfd_create("syzkaller", 0) = 4 [pid 509] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 509] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 509] munmap(0x7ff42f60d000, 138412032) = 0 [pid 509] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 509] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 510 attached ) = 0 [pid 509] close(4 [pid 510] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 510] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 510] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 509] <... close resumed>) = 0 [pid 509] close(5 [pid 510] <... mount resumed>) = 0 [pid 510] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... close resumed>) = 0 [pid 510] <... futex resumed>) = 1 [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 509] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 509] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 509] ioctl(4, LOOP_CLR_FD) = 0 [pid 509] close(4) = 0 [pid 509] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... open resumed>) = 4 [pid 510] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 508] <... futex resumed>) = 0 [pid 510] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 508] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = 0 [pid 508] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] <... futex resumed>) = 1 [pid 509] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 508] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 509] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 509] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 508] exit_group(0) = ? [pid 509] <... futex resumed>) = ? [pid 509] +++ exited with 0 +++ [pid 510] <... futex resumed>) = ? [ 28.707655][ T509] loop0: detected capacity change from 0 to 512 [pid 510] +++ exited with 0 +++ [pid 508] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=508, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 511 ./strace-static-x86_64: Process 511 attached [pid 511] set_robust_list(0x5555900c96a0, 24) = 0 [pid 511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 511] setpgid(0, 0) = 0 [pid 511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 511] write(3, "1000", 4) = 4 [pid 511] close(3) = 0 [pid 511] write(1, "executing program\n", 18executing program ) = 18 [pid 511] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 511] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 511] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 511] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 511] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[512]}, 88) = 512 [pid 511] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 511] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 512 attached [pid 512] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 512] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 512] creat("./bus", 000) = 3 [pid 512] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 511] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 511] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 511] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 512] <... futex resumed>) = 1 [pid 511] <... clone3 resumed> => {parent_tid=[513]}, 88) = 513 ./strace-static-x86_64: Process 513 attached [pid 511] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 511] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] memfd_create("syzkaller", 0) = 4 [pid 512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 513] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 513] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 512] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 513] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 513] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] <... futex resumed>) = 1 [pid 513] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 512] <... write resumed>) = 262144 [pid 513] <... open resumed>) = 5 [pid 512] munmap(0x7ff42f60d000, 138412032 [pid 513] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] <... futex resumed>) = 1 [pid 513] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 513] <... futex resumed>) = 1 [pid 513] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 511] <... futex resumed>) = ? [pid 512] <... munmap resumed>) = ? [pid 512] +++ killed by SIGBUS +++ [pid 513] +++ killed by SIGBUS +++ [pid 511] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=511, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 514 ./strace-static-x86_64: Process 514 attached [pid 514] set_robust_list(0x5555900c96a0, 24) = 0 [pid 514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 514] setpgid(0, 0) = 0 [pid 514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 514] write(3, "1000", 4) = 4 [pid 514] close(3) = 0 [pid 514] write(1, "executing program\n", 18) = 18 executing program [pid 514] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 514] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 514] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 514] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 514] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[515]}, 88) = 515 [pid 514] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 514] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 515 attached [pid 515] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 515] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 515] creat("./bus", 000) = 3 [pid 515] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... futex resumed>) = 0 [pid 514] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 514] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 514] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 514] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[516]}, 88) = 516 [pid 514] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 514] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 515] <... futex resumed>) = 1 [pid 515] memfd_create("syzkaller", 0) = 4 [pid 515] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 516 attached [pid 515] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 516] set_robust_list(0x7ff437a2d9a0, 24 [pid 515] <... write resumed>) = 262144 [pid 516] <... set_robust_list resumed>) = 0 [pid 515] munmap(0x7ff42f60d000, 138412032 [pid 516] rt_sigprocmask(SIG_SETMASK, [], [pid 515] <... munmap resumed>) = 0 [pid 516] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 515] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 516] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 515] <... openat resumed>) = 5 [pid 515] ioctl(5, LOOP_SET_FD, 4 [pid 516] <... mount resumed>) = 0 [pid 516] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... ioctl resumed>) = 0 [pid 516] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 516] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 515] close(4 [pid 514] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 515] <... close resumed>) = 0 [pid 514] <... futex resumed>) = 0 [pid 516] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 515] close(5 [pid 514] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... open resumed>) = 4 [pid 515] <... close resumed>) = 0 [pid 516] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] mkdir("./bus", 0777 [pid 516] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 516] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 515] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 514] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 515] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 514] <... futex resumed>) = 0 [pid 516] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 514] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 515] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 516] <... mmap resumed>) = 0x400000000000 [pid 515] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 516] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... futex resumed>) = 0 [pid 516] <... futex resumed>) = 1 [pid 515] <... openat resumed>) = 5 [pid 514] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 516] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 514] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 516] <... bpf resumed>) = 6 [pid 516] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] ioctl(5, LOOP_CLR_FD [pid 514] <... futex resumed>) = 0 [pid 516] <... futex resumed>) = 1 [pid 515] <... ioctl resumed>) = 0 [pid 516] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 515] close(5) = 0 [pid 515] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] exit_group(0) = ? [pid 516] <... futex resumed>) = 231 [pid 516] +++ exited with 0 +++ [pid 515] +++ exited with 0 +++ [pid 514] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=514, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 28.809961][ T515] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 517 ./strace-static-x86_64: Process 517 attached [pid 517] set_robust_list(0x5555900c96a0, 24) = 0 [pid 517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 517] setpgid(0, 0) = 0 [pid 517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 517] write(3, "1000", 4) = 4 [pid 517] close(3) = 0 [pid 517] write(1, "executing program\n", 18executing program ) = 18 [pid 517] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 517] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 517] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 517] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 517] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[518]}, 88) = 518 [pid 517] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 517] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 518 attached [pid 518] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 518] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 518] creat("./bus", 000) = 3 [pid 518] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] <... futex resumed>) = 0 [pid 517] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 517] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 517] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 517] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 518] <... futex resumed>) = 1 [pid 517] <... clone3 resumed> => {parent_tid=[519]}, 88) = 519 [pid 517] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 517] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 519 attached [pid 519] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 519] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 519] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 519] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] <... futex resumed>) = 0 [pid 519] <... futex resumed>) = 1 [pid 518] memfd_create("syzkaller", 0 [pid 517] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 519] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 518] <... memfd_create resumed>) = 5 [pid 519] <... open resumed>) = 4 [pid 518] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 519] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] <... futex resumed>) = 0 [pid 517] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 519] <... futex resumed>) = 1 [pid 519] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 517] <... futex resumed>) = 0 [pid 517] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 519] <... futex resumed>) = 1 [pid 519] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 517] <... futex resumed>) = ? [pid 519] +++ killed by SIGBUS +++ [pid 518] +++ killed by SIGBUS +++ [pid 517] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=517, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 520 ./strace-static-x86_64: Process 520 attached [pid 520] set_robust_list(0x5555900c96a0, 24) = 0 [pid 520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 520] setpgid(0, 0) = 0 [pid 520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 520] write(3, "1000", 4) = 4 [pid 520] close(3) = 0 [pid 520] write(1, "executing program\n", 18) = 18 [pid 520] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 520] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 520] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 520] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 520] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[521]}, 88) = 521 [pid 520] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 520] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 521 attached [pid 521] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 521] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 521] creat("./bus", 000) = 3 [pid 521] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 520] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE [pid 521] memfd_create("syzkaller", 0 [pid 520] <... mprotect resumed>) = 0 [pid 520] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 520] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[522]}, 88) = 522 [pid 521] <... memfd_create resumed>) = 4 [pid 520] rt_sigprocmask(SIG_SETMASK, [], [pid 521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 520] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 520] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 521] <... mmap resumed>) = 0x7ff42f60d000 [pid 520] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 522 attached [pid 522] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 522] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 522] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 522] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 521] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 522] <... open resumed>) = 5 [pid 522] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] <... mmap resumed>) = 0x400000000000 [pid 522] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 520] <... futex resumed>) = 0 [pid 522] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 520] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = ? [pid 521] <... write resumed>) = ? [pid 521] +++ killed by SIGBUS +++ [pid 522] +++ killed by SIGBUS +++ [pid 520] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=520, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 523 attached , child_tidptr=0x5555900c9690) = 523 [pid 523] set_robust_list(0x5555900c96a0, 24) = 0 [pid 523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 523] setpgid(0, 0) = 0 [pid 523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 523] write(3, "1000", 4) = 4 [pid 523] close(3) = 0 [pid 523] write(1, "executing program\n", 18executing program ) = 18 [pid 523] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 523] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 523] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 523] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 523] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 524 attached => {parent_tid=[524]}, 88) = 524 [pid 523] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 523] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 524] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 524] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 524] creat("./bus", 000) = 3 [pid 524] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 523] <... futex resumed>) = 0 [pid 523] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 523] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 523] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 523] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[525]}, 88) = 525 [pid 523] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 523] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 525 attached [pid 525] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 525] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 525] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... futex resumed>) = 0 [pid 524] memfd_create("syzkaller", 0 [pid 523] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] <... futex resumed>) = 1 [pid 525] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 525] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... futex resumed>) = 0 [pid 524] <... memfd_create resumed>) = 5 [pid 523] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] <... futex resumed>) = 1 [pid 525] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 525] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... futex resumed>) = 0 [pid 524] <... mmap resumed>) = 0x7ff42f60d000 [pid 523] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 525] <... futex resumed>) = 1 [pid 525] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 523] <... futex resumed>) = ? [pid 524] +++ killed by SIGBUS +++ [pid 525] +++ killed by SIGBUS +++ [pid 523] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=523, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 526 ./strace-static-x86_64: Process 526 attached [pid 526] set_robust_list(0x5555900c96a0, 24) = 0 [pid 526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 526] setpgid(0, 0) = 0 [pid 526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 526] write(3, "1000", 4) = 4 [pid 526] close(3) = 0 executing program [pid 526] write(1, "executing program\n", 18) = 18 [pid 526] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 526] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 526] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 526] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 526] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 526] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 527 attached [pid 527] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 527] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 527] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] <... clone3 resumed> => {parent_tid=[527]}, 88) = 527 [pid 526] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 526] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 527] <... futex resumed>) = 0 [pid 527] creat("./bus", 000 [pid 526] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 527] <... creat resumed>) = 3 [pid 527] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 527] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] <... futex resumed>) = 0 [pid 526] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 527] <... futex resumed>) = 0 [pid 527] memfd_create("syzkaller", 0 [pid 526] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... memfd_create resumed>) = 4 [pid 527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 526] <... futex resumed>) = 0 [pid 526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 526] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 526] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 526] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0}./strace-static-x86_64: Process 528 attached => {parent_tid=[528]}, 88) = 528 [pid 528] set_robust_list(0x7ff42f62d9a0, 24 [pid 527] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 526] rt_sigprocmask(SIG_SETMASK, [], [pid 528] <... set_robust_list resumed>) = 0 [pid 526] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 528] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 526] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 526] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 528] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 526] <... futex resumed>) = 0 [pid 526] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 528] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 526] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 527] <... write resumed>) = 262144 [pid 527] munmap(0x7ff42f62e000, 138412032) = 0 [pid 528] <... open resumed>) = 5 [pid 527] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 527] ioctl(6, LOOP_SET_FD, 4 [pid 528] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 526] <... futex resumed>) = 0 [pid 526] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 526] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 527] <... ioctl resumed>) = 0 [pid 527] close(4) = 0 [pid 527] close(6) = 0 [pid 527] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 527] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 527] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 527] ioctl(4, LOOP_CLR_FD) = 0 [pid 527] close(4) = 0 [pid 527] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 528] <... mmap resumed>) = 0x400000000000 [pid 528] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] <... futex resumed>) = 0 [pid 526] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 526] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 527] <... futex resumed>) = 0 [pid 527] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 528] <... futex resumed>) = 1 [pid 527] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] <... futex resumed>) = 0 [pid 526] exit_group(0) = ? [pid 527] <... futex resumed>) = ? [pid 528] <... futex resumed>) = ? [pid 527] +++ exited with 0 +++ [pid 528] +++ exited with 0 +++ [pid 526] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=526, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 529 ./strace-static-x86_64: Process 529 attached [pid 529] set_robust_list(0x5555900c96a0, 24) = 0 [pid 529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 529] setpgid(0, 0) = 0 [pid 529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 529] write(3, "1000", 4) = 4 [pid 529] close(3) = 0 [pid 529] write(1, "executing program\n", 18executing program ) = 18 [pid 529] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 529] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 529] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 529] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 529] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[530]}, 88) = 530 [pid 529] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 529] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 530 attached [pid 530] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 530] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 530] creat("./bus", 000) = 3 [pid 530] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 529] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 529] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 529] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[531]}, 88) = 531 [pid 529] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 529] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] <... futex resumed>) = 1 [pid 530] memfd_create("syzkaller", 0) = 4 [pid 530] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [ 28.966018][ T527] loop0: detected capacity change from 0 to 512 ./strace-static-x86_64: Process 531 attached [pid 531] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 531] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 531] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 531] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 529] <... futex resumed>) = 0 [pid 531] <... futex resumed>) = 1 [pid 529] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 531] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 529] <... futex resumed>) = 0 [pid 531] <... open resumed>) = 5 [pid 529] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 531] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 531] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 530] <... write resumed>) = 262144 [pid 530] munmap(0x7ff42f60d000, 138412032 [pid 531] <... mmap resumed>) = 0x400000000000 [pid 531] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] <... munmap resumed>) = 0 [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 531] <... futex resumed>) = 1 [pid 530] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 531] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 529] <... futex resumed>) = ? [pid 530] <... openat resumed>) = ? [pid 530] +++ killed by SIGBUS +++ [pid 531] +++ killed by SIGBUS +++ [pid 529] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=529, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 532 ./strace-static-x86_64: Process 532 attached [pid 532] set_robust_list(0x5555900c96a0, 24) = 0 [pid 532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 532] setpgid(0, 0) = 0 [pid 532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 532] write(3, "1000", 4) = 4 [pid 532] close(3) = 0 [pid 532] write(1, "executing program\n", 18executing program ) = 18 [pid 532] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 532] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 532] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 532] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 532] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 532] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 533 attached [pid 533] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 533] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 533] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... clone3 resumed> => {parent_tid=[533]}, 88) = 533 [pid 532] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 532] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 533] <... futex resumed>) = 0 [pid 533] creat("./bus", 000) = 3 [pid 532] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 533] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 533] memfd_create("syzkaller", 0) = 4 [pid 533] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 532] <... futex resumed>) = 1 [pid 532] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 532] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 533] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 532] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 532] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0} => {parent_tid=[534]}, 88) = 534 [pid 533] <... write resumed>) = 262144 [pid 532] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 534 attached [pid 533] munmap(0x7ff42f62e000, 138412032) = 0 [pid 533] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 533] ioctl(5, LOOP_SET_FD, 4 [pid 534] set_robust_list(0x7ff42f62d9a0, 24 [pid 532] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 532] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... set_robust_list resumed>) = 0 [pid 532] <... futex resumed>) = 0 [pid 532] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 534] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 534] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 534] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 532] <... futex resumed>) = 0 [pid 532] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 532] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 534] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 533] <... ioctl resumed>) = 0 [pid 534] <... open resumed>) = 6 [pid 534] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... futex resumed>) = 0 [pid 532] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 532] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 534] <... futex resumed>) = 1 [pid 534] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 533] close(4) = 0 [pid 533] close(5 [pid 534] <... mmap resumed>) = 0x400000000000 [pid 533] <... close resumed>) = 0 [pid 533] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 533] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 533] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 533] ioctl(4, LOOP_CLR_FD) = 0 [pid 533] close(4) = 0 [pid 533] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 534] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... futex resumed>) = 0 [pid 532] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 532] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 533] <... futex resumed>) = 0 [pid 533] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 534] <... futex resumed>) = 1 [pid 533] <... bpf resumed>) = 4 [pid 533] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 533] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 534] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... futex resumed>) = 0 [pid 532] exit_group(0) = ? [pid 533] <... futex resumed>) = ? [pid 533] +++ exited with 0 +++ [pid 534] <... futex resumed>) = ? [pid 534] +++ exited with 0 +++ [pid 532] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=532, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- [ 29.066866][ T533] loop0: detected capacity change from 0 to 512 restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 535 ./strace-static-x86_64: Process 535 attached [pid 535] set_robust_list(0x5555900c96a0, 24) = 0 [pid 535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 535] setpgid(0, 0) = 0 [pid 535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 535] write(3, "1000", 4) = 4 [pid 535] close(3) = 0 [pid 535] write(1, "executing program\n", 18executing program ) = 18 [pid 535] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 535] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 535] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 535] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 535] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[536]}, 88) = 536 [pid 535] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 535] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 536 attached [pid 536] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 536] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 536] creat("./bus", 000) = 3 [pid 536] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 535] <... futex resumed>) = 0 [pid 535] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 535] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 535] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 535] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[537]}, 88) = 537 [pid 535] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 535] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 536] <... futex resumed>) = 1 [pid 536] memfd_create("syzkaller", 0) = 4 [pid 536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 536] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 536] munmap(0x7ff42f60d000, 138412032) = 0 [pid 536] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 536] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 537 attached [pid 537] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 537] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 537] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 537] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 537] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] <... futex resumed>) = 0 [pid 535] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 535] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 537] <... futex resumed>) = 0 [pid 537] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 536] <... ioctl resumed>) = 0 [pid 537] <... open resumed>) = 6 [pid 536] close(4 [pid 537] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 536] <... close resumed>) = 0 [pid 537] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 536] close(5 [pid 535] <... futex resumed>) = 0 [pid 535] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 535] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 537] <... futex resumed>) = 0 [pid 537] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 536] <... close resumed>) = 0 [pid 536] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 536] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 537] <... mmap resumed>) = 0x400000000000 [pid 536] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 537] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 535] <... futex resumed>) = 0 [pid 535] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 537] <... futex resumed>) = 1 [pid 537] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 537] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 535] <... futex resumed>) = 0 [pid 537] <... futex resumed>) = 1 [pid 537] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 536] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 536] ioctl(5, LOOP_CLR_FD) = 0 [pid 536] close(5) = 0 [pid 536] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 536] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] exit_group(0) = ? [pid 537] <... futex resumed>) = ? [pid 537] +++ exited with 0 +++ [pid 536] <... futex resumed>) = ? [pid 536] +++ exited with 0 +++ [pid 535] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=535, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 538 ./strace-static-x86_64: Process 538 attached [pid 538] set_robust_list(0x5555900c96a0, 24) = 0 [pid 538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 538] setpgid(0, 0) = 0 [pid 538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 538] write(3, "1000", 4) = 4 [pid 538] close(3) = 0 executing program [pid 538] write(1, "executing program\n", 18) = 18 [pid 538] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 538] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 538] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 538] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 538] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[539]}, 88) = 539 [pid 538] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 538] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 539 attached [pid 539] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 539] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 539] creat("./bus", 000) = 3 [pid 539] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 538] <... futex resumed>) = 0 [pid 538] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 538] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 538] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 538] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[540]}, 88) = 540 [pid 538] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 538] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... futex resumed>) = 1 [pid 539] memfd_create("syzkaller", 0) = 4 [pid 539] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 539] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 539] munmap(0x7ff42f60d000, 138412032) = 0 [pid 539] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 29.139777][ T536] loop0: detected capacity change from 0 to 512 [pid 539] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 540 attached [pid 540] set_robust_list(0x7ff437a2d9a0, 24 [pid 539] <... ioctl resumed>) = 0 [pid 539] close(4) = 0 [pid 539] close(5 [pid 540] <... set_robust_list resumed>) = 0 [pid 539] <... close resumed>) = 0 [pid 540] rt_sigprocmask(SIG_SETMASK, [], [pid 539] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 539] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 540] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 540] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 540] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 538] <... futex resumed>) = 0 [pid 538] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 540] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 540] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] <... futex resumed>) = 0 [pid 538] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... futex resumed>) = 0 [pid 538] <... futex resumed>) = 1 [pid 540] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 538] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] <... mmap resumed>) = 0x400000000000 [pid 540] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 540] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] <... futex resumed>) = 0 [pid 538] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 538] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 540] <... futex resumed>) = 0 [pid 540] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 540] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 538] <... futex resumed>) = 0 [pid 540] <... futex resumed>) = 1 [ 29.192386][ T539] loop0: detected capacity change from 0 to 512 [ 29.204958][ T539] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 29.216560][ T539] EXT4-fs error (device loop0): ext4_free_branches:1030: inode #16: comm syz-executor316: invalid indirect mapped block 512 (level 0) [ 29.230579][ T539] EXT4-fs (loop0): Remounting filesystem read-only [ 29.237118][ T539] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 29.250258][ T539] EXT4-fs (loop0): Remounting filesystem read-only [ 29.256724][ T539] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5837: Corrupt filesystem [ 29.266116][ T539] EXT4-fs (loop0): Remounting filesystem read-only [ 29.272471][ T539] EXT4-fs error (device loop0) in ext4_orphan_del:305: Corrupt filesystem [ 29.280974][ T539] EXT4-fs (loop0): Remounting filesystem read-only [ 29.287391][ T539] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 29.300442][ T539] EXT4-fs (loop0): Remounting filesystem read-only [ 29.306792][ T539] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5837: Corrupt filesystem [ 29.316223][ T539] EXT4-fs (loop0): Remounting filesystem read-only [ 29.322596][ T539] EXT4-fs error (device loop0): ext4_truncate:4303: inode #16: comm syz-executor316: mark_inode_dirty error [ 29.334056][ T539] EXT4-fs (loop0): Remounting filesystem read-only [pid 540] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] exit_group(0 [pid 540] <... futex resumed>) = ? [pid 538] <... exit_group resumed>) = ? [pid 540] +++ exited with 0 +++ [pid 539] <... mount resumed>) = ? [ 29.340377][ T539] EXT4-fs error (device loop0) in ext4_process_orphan:347: Corrupt filesystem [ 29.349263][ T539] EXT4-fs (loop0): Remounting filesystem read-only [ 29.355685][ T539] EXT4-fs (loop0): 1 orphan inode deleted [ 29.361200][ T539] EXT4-fs (loop0): 1 truncate cleaned up [ 29.366672][ T539] EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x0000000000010000,block_validity,quota,. Quota mode: writeback. [pid 539] +++ exited with 0 +++ [pid 538] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=538, si_uid=0, si_status=0, si_utime=0, si_stime=20} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 544 ./strace-static-x86_64: Process 544 attached [pid 544] set_robust_list(0x5555900c96a0, 24) = 0 [pid 544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 544] setpgid(0, 0) = 0 [pid 544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ) = 3 [pid 544] write(3, "1000", 4) = 4 [pid 544] close(3) = 0 [pid 544] write(1, "executing program\n", 18) = 18 [pid 544] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 544] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 544] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 544] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 544] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[545]}, 88) = 545 [pid 544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 544] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 545 attached [pid 545] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 545] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 545] creat("./bus", 000) = 3 [pid 545] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 544] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 544] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 544] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[546]}, 88) = 546 [pid 544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 544] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] <... futex resumed>) = 1 [pid 545] memfd_create("syzkaller", 0) = 4 [pid 545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 545] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 546 attached ) = 262144 [pid 545] munmap(0x7ff42f60d000, 138412032) = 0 [pid 546] set_robust_list(0x7ff437a2d9a0, 24 [pid 545] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 546] <... set_robust_list resumed>) = 0 [pid 546] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 546] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 545] <... openat resumed>) = 5 [pid 545] ioctl(5, LOOP_SET_FD, 4 [pid 546] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 546] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 544] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 546] <... futex resumed>) = 0 [pid 546] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 545] <... ioctl resumed>) = 0 [pid 546] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] close(4) = 0 [pid 546] <... futex resumed>) = 1 [pid 545] close(5 [pid 546] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 545] <... close resumed>) = 0 [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 546] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 545] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 545] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 545] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 545] ioctl(4, LOOP_CLR_FD) = 0 [pid 546] <... mmap resumed>) = 0x400000000000 [pid 545] close(4 [pid 546] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] <... close resumed>) = 0 [pid 546] <... futex resumed>) = 1 [pid 546] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 545] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 545] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 544] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 545] <... futex resumed>) = 0 [pid 545] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 545] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 544] <... futex resumed>) = 0 [pid 544] exit_group(0) = ? [pid 546] <... futex resumed>) = ? [pid 546] +++ exited with 0 +++ [pid 545] +++ exited with 0 +++ [pid 544] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=544, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 547 ./strace-static-x86_64: Process 547 attached [pid 547] set_robust_list(0x5555900c96a0, 24) = 0 [pid 547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 547] setpgid(0, 0) = 0 [pid 547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 547] write(3, "1000", 4) = 4 [pid 547] close(3) = 0 [pid 547] write(1, "executing program\n", 18executing program ) = 18 [pid 547] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 547] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 547] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 547] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 547] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 547] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[548]}, 88) = 548 [pid 547] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 547] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 548 attached [pid 548] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 548] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 548] creat("./bus", 000) = 3 [pid 548] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] <... futex resumed>) = 0 [pid 547] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 547] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 547] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 547] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 548] <... futex resumed>) = 1 [pid 547] <... clone3 resumed> => {parent_tid=[549]}, 88) = 549 ./strace-static-x86_64: Process 549 attached [pid 548] memfd_create("syzkaller", 0 [pid 547] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 547] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 549] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 549] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 549] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 548] <... memfd_create resumed>) = 4 [pid 549] <... mount resumed>) = 0 [pid 548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 549] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 549] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 547] <... futex resumed>) = 0 [pid 547] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 547] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 549] <... futex resumed>) = 0 [pid 549] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 548] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 549] <... open resumed>) = 5 [pid 549] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] <... futex resumed>) = 0 [pid 547] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 549] <... futex resumed>) = 1 [pid 549] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 547] <... futex resumed>) = 0 [pid 547] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 549] <... futex resumed>) = 1 [pid 549] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [ 29.551624][ T545] loop0: detected capacity change from 0 to 512 [pid 547] <... futex resumed>) = ? [pid 548] <... write resumed>) = ? [pid 548] +++ killed by SIGBUS +++ [pid 549] +++ killed by SIGBUS +++ [pid 547] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=547, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 550 ./strace-static-x86_64: Process 550 attached [pid 550] set_robust_list(0x5555900c96a0, 24) = 0 [pid 550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 550] setpgid(0, 0) = 0 [pid 550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 550] write(3, "1000", 4) = 4 [pid 550] close(3) = 0 [pid 550] write(1, "executing program\n", 18executing program ) = 18 [pid 550] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 550] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 550] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 550] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 550] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 550] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[551]}, 88) = 551 ./strace-static-x86_64: Process 551 attached [pid 551] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 551] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 551] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 550] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 551] <... futex resumed>) = 0 [pid 551] creat("./bus", 000 [pid 550] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] <... creat resumed>) = 3 [pid 551] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 550] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 551] <... futex resumed>) = 0 [pid 551] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 551] <... futex resumed>) = 0 [pid 551] memfd_create("syzkaller", 0) = 4 [pid 550] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 550] <... futex resumed>) = 0 [pid 550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 550] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 550] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 550] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0}./strace-static-x86_64: Process 552 attached => {parent_tid=[552]}, 88) = 552 [pid 552] set_robust_list(0x7ff42f62d9a0, 24 [pid 551] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 552] <... set_robust_list resumed>) = 0 [pid 550] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 552] rt_sigprocmask(SIG_SETMASK, [], [pid 550] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 552] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 550] <... futex resumed>) = 0 [pid 552] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 550] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 552] <... mount resumed>) = 0 [pid 552] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 550] <... futex resumed>) = 0 [pid 550] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 552] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 550] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 552] <... open resumed>) = 5 [pid 552] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 550] <... futex resumed>) = 0 [pid 550] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 552] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 550] <... futex resumed>) = 0 [pid 551] <... write resumed>) = 262144 [pid 551] munmap(0x7ff42f62e000, 138412032 [pid 550] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 552] <... mmap resumed>) = 0x400000000000 [pid 551] <... munmap resumed>) = 0 [pid 551] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 551] ioctl(6, LOOP_SET_FD, 4 [pid 552] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 550] <... futex resumed>) = 0 [pid 550] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 550] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 551] <... ioctl resumed>) = 0 [pid 551] close(4) = 0 [pid 551] close(6) = 0 [pid 551] mkdir(0x400000000000, 0777 [pid 552] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 551] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 552] <... bpf resumed>) = 4 [pid 551] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 551] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 551] ioctl(6, LOOP_CLR_FD) = 0 [pid 551] close(6) = 0 [pid 551] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 551] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 550] <... futex resumed>) = 0 [pid 550] exit_group(0) = ? [pid 551] <... futex resumed>) = ? [pid 551] +++ exited with 0 +++ [pid 552] <... futex resumed>) = ? [pid 552] +++ exited with 0 +++ [pid 550] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=550, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 29.647359][ T551] loop0: detected capacity change from 0 to 512 [ 29.648375][ T552] blk_update_request: I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 31 prio class 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 553 ./strace-static-x86_64: Process 553 attached [pid 553] set_robust_list(0x5555900c96a0, 24) = 0 [pid 553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 553] setpgid(0, 0) = 0 [pid 553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 553] write(3, "1000", 4) = 4 [pid 553] close(3executing program ) = 0 [pid 553] write(1, "executing program\n", 18) = 18 [pid 553] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 553] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 553] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 553] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 553] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 553] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[554]}, 88) = 554 [pid 553] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 553] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 554 attached [pid 554] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 554] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 554] creat("./bus", 000) = 3 [pid 554] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 554] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] <... futex resumed>) = 0 [pid 553] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 553] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 553] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 553] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 553] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[555]}, 88) = 555 [pid 553] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 553] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] <... futex resumed>) = 0 [pid 554] memfd_create("syzkaller", 0) = 4 [pid 554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 555 attached [pid 554] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 554] munmap(0x7ff42f60d000, 138412032) = 0 [pid 554] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 555] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 554] ioctl(5, LOOP_SET_FD, 4) = 0 [pid 554] close(4 [pid 555] rt_sigprocmask(SIG_SETMASK, [], [pid 554] <... close resumed>) = 0 [pid 554] close(5 [pid 555] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 554] <... close resumed>) = 0 [pid 554] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 554] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 555] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 555] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 553] <... futex resumed>) = 0 [pid 555] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 555] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 553] <... futex resumed>) = 0 [pid 555] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 553] <... futex resumed>) = 0 [pid 553] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 553] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 555] <... futex resumed>) = 0 [pid 555] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 555] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] <... futex resumed>) = 0 [pid 555] <... futex resumed>) = 1 [pid 555] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 554] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 554] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 554] ioctl(6, LOOP_CLR_FD) = 0 [pid 554] close(6) = 0 [pid 554] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] exit_group(0) = ? [pid 555] <... futex resumed>) = ? [pid 555] +++ exited with 0 +++ [pid 554] +++ exited with 0 +++ [pid 553] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=553, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 556 ./strace-static-x86_64: Process 556 attached [pid 556] set_robust_list(0x5555900c96a0, 24) = 0 [pid 556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 556] setpgid(0, 0) = 0 [pid 556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 556] write(3, "1000", 4executing program ) = 4 [pid 556] close(3) = 0 [pid 556] write(1, "executing program\n", 18) = 18 [pid 556] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 556] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 556] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 556] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 556] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[557]}, 88) = 557 [pid 556] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 556] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 557 attached [pid 557] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 557] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 557] creat("./bus", 000) = 3 [pid 557] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 0 [pid 556] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 556] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 556] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 556] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[558]}, 88) = 558 [pid 556] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 556] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 557] <... futex resumed>) = 1 [pid 557] memfd_create("syzkaller", 0) = 4 [pid 557] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 557] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 558 attached ) = 262144 [pid 557] munmap(0x7ff42f60d000, 138412032) = 0 [pid 557] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 29.734464][ T554] loop0: detected capacity change from 0 to 512 [ 29.744731][ T554] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 29.754472][ T554] EXT4-fs (loop0): fragment/cluster size (2048) != block size (1024) [pid 557] ioctl(5, LOOP_SET_FD, 4 [pid 558] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 558] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 558] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 558] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 558] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 556] <... futex resumed>) = 0 [pid 556] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 556] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 558] <... futex resumed>) = 0 [pid 558] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 557] <... ioctl resumed>) = 0 [pid 557] close(4 [pid 558] <... open resumed>) = 6 [pid 558] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 0 [pid 556] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 558] <... futex resumed>) = 1 [pid 558] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 557] <... close resumed>) = 0 [pid 557] close(5 [pid 558] <... mmap resumed>) = 0x400000000000 [pid 558] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 0 [pid 556] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 558] <... futex resumed>) = 1 [pid 558] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 558] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 0 [pid 558] <... futex resumed>) = 1 [pid 558] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 557] <... close resumed>) = 0 [pid 557] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 557] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 557] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 557] ioctl(5, LOOP_CLR_FD) = 0 [pid 557] close(5) = 0 [pid 557] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 557] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 556] exit_group(0) = ? [pid 558] <... futex resumed>) = ? [pid 558] +++ exited with 0 +++ [pid 557] <... futex resumed>) = ? [pid 557] +++ exited with 0 +++ [pid 556] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=556, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 559 ./strace-static-x86_64: Process 559 attached [pid 559] set_robust_list(0x5555900c96a0, 24) = 0 [pid 559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 559] setpgid(0, 0) = 0 [pid 559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 559] write(3, "1000", 4) = 4 [pid 559] close(3) = 0 [pid 559] write(1, "executing program\n", 18executing program ) = 18 [pid 559] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 559] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 559] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 559] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 559] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[560]}, 88) = 560 [pid 559] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 559] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 560 attached [pid 560] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 560] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 560] creat("./bus", 000) = 3 [pid 560] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 559] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 559] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 559] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[561]}, 88) = 561 [pid 559] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 559] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 560] <... futex resumed>) = 1 [pid 560] memfd_create("syzkaller", 0) = 4 [pid 560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 560] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 560] munmap(0x7ff42f60d000, 138412032) = 0 [pid 560] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 29.796855][ T557] loop0: detected capacity change from 0 to 512 [pid 560] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 561 attached [pid 561] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 561] rt_sigprocmask(SIG_SETMASK, [], [pid 560] <... ioctl resumed>) = 0 [pid 561] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 561] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 561] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 561] <... futex resumed>) = 1 [pid 561] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 561] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 561] <... futex resumed>) = 1 [pid 561] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 560] close(4) = 0 [pid 560] close(5 [pid 561] <... mmap resumed>) = 0x400000000000 [pid 560] <... close resumed>) = 0 [pid 560] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 560] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 560] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 560] ioctl(4, LOOP_CLR_FD) = 0 [pid 560] close(4) = 0 [pid 560] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 561] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 559] <... futex resumed>) = 0 [pid 561] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 559] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 560] <... futex resumed>) = 0 [pid 560] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 560] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 559] exit_group(0) = ? [pid 560] <... futex resumed>) = ? [pid 560] +++ exited with 0 +++ [pid 561] <... futex resumed>) = ? [pid 561] +++ exited with 0 +++ [pid 559] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=559, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 562 ./strace-static-x86_64: Process 562 attached [ 29.858613][ T560] loop0: detected capacity change from 0 to 512 executing program [pid 562] set_robust_list(0x5555900c96a0, 24) = 0 [pid 562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 562] setpgid(0, 0) = 0 [pid 562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 562] write(3, "1000", 4) = 4 [pid 562] close(3) = 0 [pid 562] write(1, "executing program\n", 18) = 18 [pid 562] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 562] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 562] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 562] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 562] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 562] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[563]}, 88) = 563 [pid 562] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 562] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 562] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 563 attached [pid 563] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 563] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 563] creat("./bus", 000) = 3 [pid 563] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] <... futex resumed>) = 0 [pid 562] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 562] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 562] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 562] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 562] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[564]}, 88) = 564 [pid 562] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 562] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 562] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 563] <... futex resumed>) = 1 [pid 563] memfd_create("syzkaller", 0) = 4 [pid 563] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 563] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 563] munmap(0x7ff42f60d000, 138412032) = 0 [pid 563] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 563] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 564 attached [pid 564] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 564] rt_sigprocmask(SIG_SETMASK, [], [pid 563] <... ioctl resumed>) = 0 [pid 564] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 563] close(4) = 0 [pid 564] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 563] close(5 [pid 564] <... mount resumed>) = 0 [pid 563] <... close resumed>) = 0 [pid 563] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 563] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 564] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] <... futex resumed>) = 0 [pid 562] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 562] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 564] <... futex resumed>) = 1 [pid 564] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 564] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] <... futex resumed>) = 0 [pid 562] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 562] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 564] <... futex resumed>) = 1 [pid 564] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 562] <... futex resumed>) = 0 [pid 562] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 562] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 564] <... futex resumed>) = 0 [pid 564] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 564] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 563] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 562] <... futex resumed>) = 0 [pid 564] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 563] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 563] ioctl(6, LOOP_CLR_FD) = 0 [pid 563] close(6) = 0 [pid 563] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 563] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] exit_group(0 [pid 564] <... futex resumed>) = 231 [pid 562] <... exit_group resumed>) = ? [pid 563] <... futex resumed>) = ? [pid 563] +++ exited with 0 +++ [pid 564] +++ exited with 0 +++ [pid 562] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=562, si_uid=0, si_status=0, si_utime=0, si_stime=5} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 565 ./strace-static-x86_64: Process 565 attached [pid 565] set_robust_list(0x5555900c96a0, 24) = 0 [pid 565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 565] setpgid(0, 0) = 0 [ 29.916206][ T563] loop0: detected capacity change from 0 to 512 [ 29.925423][ T563] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 29.935233][ T563] EXT4-fs (loop0): fragment/cluster size (2048) != block size (1024) [pid 565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 565] write(3, "1000", 4) = 4 [pid 565] close(3) = 0 executing program [pid 565] write(1, "executing program\n", 18) = 18 [pid 565] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 565] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 565] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 565] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[566]}, 88) = 566 [pid 565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 565] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 566 attached [pid 566] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 566] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 566] creat("./bus", 000) = 3 [pid 566] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 565] <... futex resumed>) = 0 [pid 565] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 565] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 565] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[567]}, 88) = 567 [pid 565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 565] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 566] <... futex resumed>) = 1 [pid 566] memfd_create("syzkaller", 0) = 4 [pid 566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 567 attached [pid 567] set_robust_list(0x7ff437a2d9a0, 24 [pid 566] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 567] <... set_robust_list resumed>) = 0 [pid 567] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 567] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 567] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 565] <... futex resumed>) = 0 [pid 565] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 567] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 566] <... write resumed>) = 262144 [pid 566] munmap(0x7ff42f60d000, 138412032) = 0 [pid 567] <... open resumed>) = 5 [pid 566] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 567] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] <... openat resumed>) = 6 [pid 567] <... futex resumed>) = 1 [pid 566] ioctl(6, LOOP_SET_FD, 4 [pid 565] <... futex resumed>) = 0 [pid 565] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 565] <... futex resumed>) = 0 [pid 565] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 567] <... mmap resumed>) = 0x400000000000 [pid 567] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 565] <... futex resumed>) = 0 [pid 565] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 567] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 565] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000}) = ? [pid 566] <... ioctl resumed>) = ? [pid 566] +++ killed by SIGBUS +++ [pid 567] +++ killed by SIGBUS +++ [pid 565] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=565, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 30.008221][ T566] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 568 ./strace-static-x86_64: Process 568 attached [pid 568] set_robust_list(0x5555900c96a0, 24) = 0 [pid 568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 568] setpgid(0, 0) = 0 [pid 568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 568] write(3, "1000", 4) = 4 [pid 568] close(3) = 0 [pid 568] write(1, "executing program\n", 18executing program ) = 18 [pid 568] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 568] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 568] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 568] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 568] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 569 attached => {parent_tid=[569]}, 88) = 569 [pid 568] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 568] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 568] <... futex resumed>) = 0 [pid 568] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 569] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 569] creat("./bus", 000) = 3 [pid 569] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 568] <... futex resumed>) = 0 [pid 568] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 569] memfd_create("syzkaller", 0 [pid 568] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 568] rt_sigprocmask(SIG_BLOCK, ~[], [pid 569] <... memfd_create resumed>) = 4 [pid 568] <... rt_sigprocmask resumed>[], 8) = 0 [pid 568] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 569] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 568] <... clone3 resumed> => {parent_tid=[570]}, 88) = 570 [pid 568] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 568] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 570 attached [pid 570] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 570] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 570] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 569] <... mmap resumed>) = 0x7ff42f60d000 [pid 570] <... mount resumed>) = 0 [pid 570] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... futex resumed>) = 0 [pid 568] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] <... futex resumed>) = 1 [pid 570] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 570] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... futex resumed>) = 0 [pid 568] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] <... futex resumed>) = 1 [pid 570] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 568] <... futex resumed>) = 0 [pid 569] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000001294} --- [pid 568] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 568] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 570] <... futex resumed>) = 1 [pid 570] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 568] <... futex resumed>) = ? [pid 570] +++ killed by SIGBUS +++ [pid 569] +++ killed by SIGBUS +++ [pid 568] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=568, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 571 attached , child_tidptr=0x5555900c9690) = 571 [pid 571] set_robust_list(0x5555900c96a0, 24) = 0 [pid 571] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 571] setpgid(0, 0) = 0 [pid 571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 571] write(3, "1000", 4) = 4 [pid 571] close(3) = 0 [pid 571] write(1, "executing program\n", 18executing program ) = 18 [pid 571] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 571] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 571] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 571] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 571] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 571] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 571] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 572 attached => {parent_tid=[572]}, 88) = 572 [pid 572] set_robust_list(0x7ff437a4e9a0, 24 [pid 571] rt_sigprocmask(SIG_SETMASK, [], [pid 572] <... set_robust_list resumed>) = 0 [pid 571] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 572] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 571] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 572] creat("./bus", 000 [pid 571] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 572] <... creat resumed>) = 3 [pid 572] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 571] <... futex resumed>) = 0 [pid 571] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 571] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 571] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 571] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 571] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 571] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 573 attached => {parent_tid=[573]}, 88) = 573 [pid 571] rt_sigprocmask(SIG_SETMASK, [], [pid 573] set_robust_list(0x7ff437a2d9a0, 24 [pid 571] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 571] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 571] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] <... set_robust_list resumed>) = 0 [pid 572] <... futex resumed>) = 0 [pid 573] rt_sigprocmask(SIG_SETMASK, [], [pid 572] memfd_create("syzkaller", 0 [pid 573] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 572] <... memfd_create resumed>) = 4 [pid 572] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 573] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 573] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 571] <... futex resumed>) = 0 [pid 571] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 571] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 573] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 571] <... futex resumed>) = 0 [pid 571] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 571] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 572] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 573] <... mmap resumed>) = 0x400000000000 [pid 573] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... futex resumed>) = 0 [pid 571] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 571] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 573] <... futex resumed>) = 1 [pid 573] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 571] <... futex resumed>) = ? [pid 572] <... write resumed>) = ? [pid 572] +++ killed by SIGBUS +++ [pid 573] +++ killed by SIGBUS +++ [pid 571] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=571, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 574 ./strace-static-x86_64: Process 574 attached [pid 574] set_robust_list(0x5555900c96a0, 24) = 0 executing program [pid 574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 574] setpgid(0, 0) = 0 [pid 574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 574] write(3, "1000", 4) = 4 [pid 574] close(3) = 0 [pid 574] write(1, "executing program\n", 18) = 18 [pid 574] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 574] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 574] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 574] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 574] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 574] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 575 attached => {parent_tid=[575]}, 88) = 575 [pid 575] set_robust_list(0x7ff437a4e9a0, 24 [pid 574] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 574] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] <... set_robust_list resumed>) = 0 [pid 575] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 575] creat("./bus", 000) = 3 [pid 575] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 574] <... futex resumed>) = 0 [pid 574] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 574] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 574] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 574] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 575] memfd_create("syzkaller", 0 [pid 574] <... clone3 resumed> => {parent_tid=[576]}, 88) = 576 ./strace-static-x86_64: Process 576 attached [pid 574] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 574] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 576] set_robust_list(0x7ff437a2d9a0, 24 [pid 575] <... memfd_create resumed>) = 4 [pid 576] <... set_robust_list resumed>) = 0 [pid 575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 576] rt_sigprocmask(SIG_SETMASK, [], [pid 575] <... mmap resumed>) = 0x7ff42f60d000 [pid 576] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 575] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 576] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 575] <... write resumed>) = 262144 [pid 575] munmap(0x7ff42f60d000, 138412032) = 0 [pid 575] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 576] <... mount resumed>) = 0 [pid 576] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 574] <... futex resumed>) = 0 [pid 574] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 576] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 576] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 574] <... futex resumed>) = 0 [pid 576] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 575] <... openat resumed>) = 6 [pid 574] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 576] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 574] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 576] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 574] <... futex resumed>) = ? [pid 575] +++ killed by SIGBUS +++ [pid 576] +++ killed by SIGBUS +++ [pid 574] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=574, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 577 ./strace-static-x86_64: Process 577 attached [pid 577] set_robust_list(0x5555900c96a0, 24) = 0 [pid 577] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 577] setpgid(0, 0) = 0 [pid 577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 577] write(3, "1000", 4) = 4 [pid 577] close(3) = 0 [pid 577] write(1, "executing program\n", 18) = 18 [pid 577] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 577] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 577] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 577] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 577] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 577] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 577] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[578]}, 88) = 578 [pid 577] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 577] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 577] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 578 attached [pid 578] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 578] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 578] creat("./bus", 000) = 3 [pid 578] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 577] <... futex resumed>) = 0 [pid 578] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 577] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 577] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 577] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 577] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 577] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 577] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 578] memfd_create("syzkaller", 0 [pid 577] <... clone3 resumed> => {parent_tid=[579]}, 88) = 579 [pid 577] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 578] <... memfd_create resumed>) = 4 [pid 577] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 577] <... futex resumed>) = 0 [pid 577] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 578] <... mmap resumed>) = 0x7ff42f60d000 ./strace-static-x86_64: Process 579 attached [pid 579] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 579] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 579] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 578] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 579] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 577] <... futex resumed>) = 0 [pid 577] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 577] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 579] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 578] <... write resumed>) = 262144 [pid 578] munmap(0x7ff42f60d000, 138412032 [pid 579] <... open resumed>) = 5 [pid 578] <... munmap resumed>) = 0 [pid 578] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 578] ioctl(6, LOOP_SET_FD, 4 [pid 579] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] <... ioctl resumed>) = 0 [pid 579] <... futex resumed>) = 1 [pid 577] <... futex resumed>) = 0 [pid 579] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 577] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] close(4 [pid 577] <... futex resumed>) = 0 [pid 577] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 578] <... close resumed>) = 0 [pid 578] close(6 [pid 579] <... mmap resumed>) = 0x400000000000 [pid 578] <... close resumed>) = 0 [pid 579] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 577] <... futex resumed>) = 0 [pid 579] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 577] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] mkdir(0x400000000000, 0777 [pid 577] <... futex resumed>) = 0 [pid 579] <... bpf resumed>) = 4 [pid 578] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 577] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 578] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 579] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 578] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 578] ioctl(6, LOOP_CLR_FD) = 0 [pid 578] close(6) = 0 [pid 578] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 578] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 579] <... futex resumed>) = 1 [pid 579] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 577] <... futex resumed>) = 0 [pid 577] exit_group(0 [pid 579] <... futex resumed>) = ? [pid 578] <... futex resumed>) = ? [pid 577] <... exit_group resumed>) = ? [pid 578] +++ exited with 0 +++ [pid 579] +++ exited with 0 +++ [pid 577] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=577, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 30.303838][ T578] loop0: detected capacity change from 0 to 512 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 580 attached , child_tidptr=0x5555900c9690) = 580 [pid 580] set_robust_list(0x5555900c96a0, 24) = 0 [pid 580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 580] setpgid(0, 0) = 0 [pid 580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 580] write(3, "1000", 4) = 4 [pid 580] close(3) = 0 [pid 580] write(1, "executing program\n", 18executing program ) = 18 [pid 580] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 580] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 580] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 580] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 580] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[581]}, 88) = 581 ./strace-static-x86_64: Process 581 attached [pid 580] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 580] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 581] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 581] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 581] creat("./bus", 000) = 3 [pid 581] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 580] <... futex resumed>) = 0 [pid 580] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 580] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 580] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 580] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 582 attached [pid 581] memfd_create("syzkaller", 0 [pid 580] <... clone3 resumed> => {parent_tid=[582]}, 88) = 582 [pid 582] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 582] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 581] <... memfd_create resumed>) = 4 [pid 582] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 580] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 582] <... futex resumed>) = 0 [pid 582] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 580] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 582] <... mount resumed>) = 0 [pid 581] <... mmap resumed>) = 0x7ff42f60d000 [pid 582] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 582] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] <... futex resumed>) = 0 [pid 581] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 580] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 580] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 582] <... futex resumed>) = 0 [pid 582] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 582] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 580] <... futex resumed>) = 0 [pid 580] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 582] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 580] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 582] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 580] <... futex resumed>) = ? [pid 581] <... write resumed>) = ? [pid 581] +++ killed by SIGBUS +++ [pid 582] +++ killed by SIGBUS +++ [pid 580] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=580, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 583 ./strace-static-x86_64: Process 583 attached [pid 583] set_robust_list(0x5555900c96a0, 24) = 0 [pid 583] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 583] setpgid(0, 0) = 0 [pid 583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 583] write(3, "1000", 4) = 4 [pid 583] close(3) = 0 [pid 583] write(1, "executing program\n", 18executing program ) = 18 [pid 583] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 583] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 583] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 583] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 583] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 583] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 583] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 584 attached => {parent_tid=[584]}, 88) = 584 [pid 584] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 584] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 584] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 583] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 583] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 584] <... futex resumed>) = 0 [pid 584] creat("./bus", 000 [pid 583] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 584] <... creat resumed>) = 3 [pid 584] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 584] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 583] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 583] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 584] <... futex resumed>) = 0 [pid 584] memfd_create("syzkaller", 0) = 4 [pid 583] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 583] <... futex resumed>) = 0 [pid 583] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 583] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 583] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 583] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0} [pid 584] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 583] <... clone3 resumed> => {parent_tid=[585]}, 88) = 585 [pid 583] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 583] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 583] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 584] <... write resumed>) = 262144 ./strace-static-x86_64: Process 585 attached [pid 584] munmap(0x7ff42f62e000, 138412032 [pid 585] set_robust_list(0x7ff42f62d9a0, 24 [pid 584] <... munmap resumed>) = 0 [pid 585] <... set_robust_list resumed>) = 0 [pid 584] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 585] rt_sigprocmask(SIG_SETMASK, [], [pid 584] <... openat resumed>) = 5 [pid 585] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 584] ioctl(5, LOOP_SET_FD, 4 [pid 585] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 585] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] <... futex resumed>) = 0 [pid 583] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 583] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] <... futex resumed>) = 1 [pid 585] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 585] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] <... futex resumed>) = 0 [pid 583] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 583] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] <... futex resumed>) = 1 [pid 585] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 584] <... ioctl resumed>) = 0 [pid 584] close(4) = 0 [pid 584] close(5) = 0 [pid 584] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 584] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 585] <... mmap resumed>) = 0x400000000000 [pid 585] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] <... futex resumed>) = 0 [pid 583] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 583] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 585] <... futex resumed>) = 1 [pid 585] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 585] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] <... futex resumed>) = 0 [pid 585] <... futex resumed>) = 1 [pid 585] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 584] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 584] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 584] ioctl(5, LOOP_CLR_FD) = 0 [pid 584] close(5) = 0 [pid 584] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 584] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 583] exit_group(0) = ? [pid 585] <... futex resumed>) = ? [pid 585] +++ exited with 0 +++ [pid 584] <... futex resumed>) = ? [pid 584] +++ exited with 0 +++ [pid 583] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=583, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 587 ./strace-static-x86_64: Process 587 attached [pid 587] set_robust_list(0x5555900c96a0, 24) = 0 [pid 587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 587] setpgid(0, 0) = 0 [pid 587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 587] write(3, "1000", 4) = 4 [pid 587] close(3) = 0 [pid 587] write(1, "executing program\n", 18executing program ) = 18 [pid 587] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 587] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 587] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 587] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 587] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 587] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 587] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[588]}, 88) = 588 [pid 587] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 587] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 587] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 588 attached [pid 588] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 588] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 588] creat("./bus", 000) = 3 [pid 588] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = 0 [pid 587] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 587] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 587] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 587] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 587] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 587] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[589]}, 88) = 589 [pid 587] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 587] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 587] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 588] <... futex resumed>) = 1 [pid 588] memfd_create("syzkaller", 0) = 4 [pid 588] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 588] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 589 attached [pid 589] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 589] rt_sigprocmask(SIG_SETMASK, [], [pid 588] <... write resumed>) = 262144 [pid 589] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 589] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 589] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = 0 [pid 587] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 587] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... futex resumed>) = 1 [pid 589] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 588] munmap(0x7ff42f60d000, 138412032 [pid 589] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = 0 [pid 587] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 587] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... futex resumed>) = 1 [pid 589] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 587] <... futex resumed>) = 0 [pid 587] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 587] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 589] <... futex resumed>) = 1 [pid 589] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 588] <... munmap resumed>) = 0 [pid 588] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 588] ioctl(6, LOOP_SET_FD, 4 [pid 587] <... futex resumed>) = ? [ 30.404570][ T584] loop0: detected capacity change from 0 to 512 [pid 588] <... ioctl resumed>) = ? [pid 589] +++ killed by SIGBUS +++ [pid 588] +++ killed by SIGBUS +++ [pid 587] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=587, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 30.458088][ T588] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 590 ./strace-static-x86_64: Process 590 attached [pid 590] set_robust_list(0x5555900c96a0, 24) = 0 [pid 590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 590] setpgid(0, 0) = 0 [pid 590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 590] write(3, "1000", 4) = 4 [pid 590] close(3) = 0 executing program [pid 590] write(1, "executing program\n", 18) = 18 [pid 590] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 590] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 590] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 590] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 590] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[591]}, 88) = 591 [pid 590] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 590] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 591 attached [pid 591] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 591] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 591] creat("./bus", 000) = 3 [pid 591] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 0 [pid 590] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 590] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 590] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 590] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[592]}, 88) = 592 [pid 590] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 590] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 591] <... futex resumed>) = 1 [pid 591] memfd_create("syzkaller", 0) = 4 [pid 591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 591] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 591] munmap(0x7ff42f60d000, 138412032) = 0 [pid 591] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 591] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 592 attached [pid 592] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 592] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 592] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 592] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 592] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 590] <... futex resumed>) = 0 [pid 590] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 590] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... futex resumed>) = 0 [pid 592] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 591] <... ioctl resumed>) = 0 [pid 592] <... open resumed>) = 6 [pid 592] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 0 [pid 590] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 591] close(4 [pid 592] <... futex resumed>) = 1 [pid 592] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 591] <... close resumed>) = 0 [pid 591] close(5) = 0 [pid 592] <... mmap resumed>) = 0x400000000000 [pid 592] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 590] <... futex resumed>) = 0 [pid 590] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 590] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 592] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 591] mkdir(0x400000000000, 0777 [pid 592] <... bpf resumed>) = 4 [pid 591] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 592] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 591] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 591] ioctl(5, LOOP_CLR_FD) = 0 [pid 591] close(5) = 0 [pid 591] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 591] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 592] <... futex resumed>) = 1 [pid 590] <... futex resumed>) = 0 [pid 590] exit_group(0) = ? [pid 591] <... futex resumed>) = ? [pid 591] +++ exited with 0 +++ [ 30.739754][ T591] loop0: detected capacity change from 0 to 512 [pid 592] +++ exited with 0 +++ [pid 590] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=590, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 593 ./strace-static-x86_64: Process 593 attached [pid 593] set_robust_list(0x5555900c96a0, 24) = 0 [pid 593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 593] setpgid(0, 0) = 0 [pid 593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 593] write(3, "1000", 4) = 4 [pid 593] close(3) = 0 [pid 593] write(1, "executing program\n", 18executing program ) = 18 [pid 593] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 593] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 593] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 593] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 593] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 593] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 593] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 594 attached => {parent_tid=[594]}, 88) = 594 [pid 594] set_robust_list(0x7ff437a4e9a0, 24 [pid 593] rt_sigprocmask(SIG_SETMASK, [], [pid 594] <... set_robust_list resumed>) = 0 [pid 593] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 594] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 593] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] creat("./bus", 000) = 3 [pid 594] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 594] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 593] <... futex resumed>) = 1 [pid 593] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 593] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 593] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 593] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 593] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 593] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 593] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[595]}, 88) = 595 [pid 593] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 593] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 593] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 594] <... futex resumed>) = 0 [pid 594] memfd_create("syzkaller", 0) = 4 [pid 594] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 595 attached [pid 595] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 595] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 595] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 594] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 595] <... mount resumed>) = 0 [pid 595] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 593] <... futex resumed>) = 0 [pid 593] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 593] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 595] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 594] <... write resumed>) = 262144 [pid 594] munmap(0x7ff42f60d000, 138412032) = 0 [pid 594] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 594] ioctl(6, LOOP_SET_FD, 4 [pid 595] <... open resumed>) = 5 [pid 594] <... ioctl resumed>) = 0 [pid 594] close(4) = 0 [pid 594] close(6 [pid 595] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] <... close resumed>) = 0 [pid 594] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 594] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 594] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 594] ioctl(4, LOOP_CLR_FD) = 0 [pid 594] close(4) = 0 [pid 594] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 594] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 593] <... futex resumed>) = 0 [pid 593] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 593] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 595] <... futex resumed>) = 1 [pid 594] <... futex resumed>) = 0 [pid 594] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 595] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 594] <... mmap resumed>) = 0x400000000000 [pid 594] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 593] <... futex resumed>) = 0 [pid 593] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 593] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 594] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 594] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 593] <... futex resumed>) = 0 [pid 593] exit_group(0 [pid 594] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 593] <... exit_group resumed>) = ? [pid 595] <... futex resumed>) = ? [pid 594] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 595] +++ exited with 0 +++ [pid 594] +++ exited with 0 +++ [pid 593] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=593, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 596 ./strace-static-x86_64: Process 596 attached [pid 596] set_robust_list(0x5555900c96a0, 24) = 0 [pid 596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 596] setpgid(0, 0) = 0 [pid 596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 596] write(3, "1000", 4) = 4 [pid 596] close(3) = 0 executing program [pid 596] write(1, "executing program\n", 18) = 18 [pid 596] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 596] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 596] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 596] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[597]}, 88) = 597 [pid 596] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 596] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 597 attached [pid 597] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 597] creat("./bus", 000) = 3 [pid 597] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] <... futex resumed>) = 0 [pid 596] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 596] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 596] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[598]}, 88) = 598 [pid 596] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 596] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] <... futex resumed>) = 1 [pid 597] memfd_create("syzkaller", 0) = 4 [pid 597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 598 attached [pid 597] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 597] munmap(0x7ff42f60d000, 138412032) = 0 [pid 597] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 30.825468][ T594] loop0: detected capacity change from 0 to 512 [pid 597] ioctl(5, LOOP_SET_FD, 4 [pid 598] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 597] <... ioctl resumed>) = 0 [pid 598] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 598] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 598] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] <... futex resumed>) = 0 [pid 596] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 598] <... futex resumed>) = 1 [pid 598] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 598] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] <... futex resumed>) = 0 [pid 596] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 598] <... futex resumed>) = 1 [pid 598] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 597] close(4) = 0 [pid 597] close(5) = 0 [pid 597] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 597] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 598] <... mmap resumed>) = 0x400000000000 [pid 598] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] <... futex resumed>) = 0 [pid 596] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 598] <... futex resumed>) = 1 [pid 598] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 598] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] <... futex resumed>) = 0 [pid 598] <... futex resumed>) = 1 [pid 598] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 597] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 597] ioctl(5, LOOP_CLR_FD) = 0 [pid 597] close(5) = 0 [pid 597] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 597] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 596] exit_group(0) = ? [pid 598] <... futex resumed>) = ? [pid 598] +++ exited with 0 +++ [pid 597] <... futex resumed>) = ? [pid 597] +++ exited with 0 +++ [pid 596] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=596, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 599 ./strace-static-x86_64: Process 599 attached [pid 599] set_robust_list(0x5555900c96a0, 24) = 0 [pid 599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 599] setpgid(0, 0) = 0 [pid 599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 599] write(3, "1000", 4) = 4 [pid 599] close(3) = 0 [pid 599] write(1, "executing program\n", 18executing program ) = 18 [pid 599] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 599] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 599] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 599] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 599] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 599] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 599] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[600]}, 88) = 600 [pid 599] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 599] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 599] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 600 attached [pid 600] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 600] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 600] creat("./bus", 000) = 3 [pid 600] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... futex resumed>) = 0 [pid 599] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 599] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 599] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 599] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 599] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 599] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[601]}, 88) = 601 [pid 599] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 599] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 599] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 600] <... futex resumed>) = 1 [pid 600] memfd_create("syzkaller", 0) = 4 [pid 600] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 600] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 601 attached ) = 262144 [pid 600] munmap(0x7ff42f60d000, 138412032) = 0 [pid 600] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 30.875334][ T597] loop0: detected capacity change from 0 to 512 [pid 600] ioctl(5, LOOP_SET_FD, 4 [pid 601] set_robust_list(0x7ff437a2d9a0, 24 [pid 600] <... ioctl resumed>) = 0 [pid 600] close(4) = 0 [pid 600] close(5) = 0 [pid 600] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 600] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 601] <... set_robust_list resumed>) = 0 [pid 601] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 601] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 601] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... futex resumed>) = 0 [pid 599] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 599] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 601] <... futex resumed>) = 1 [pid 601] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 601] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... futex resumed>) = 0 [pid 599] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 599] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 601] <... futex resumed>) = 1 [pid 601] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 599] <... futex resumed>) = 0 [pid 599] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 599] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 601] <... futex resumed>) = 1 [pid 601] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 601] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... futex resumed>) = 0 [pid 601] <... futex resumed>) = 1 [pid 601] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 600] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 600] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 600] ioctl(6, LOOP_CLR_FD) = 0 [pid 600] close(6) = 0 [pid 600] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 600] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 599] exit_group(0) = ? [pid 601] <... futex resumed>) = ? [pid 600] <... futex resumed>) = ? [pid 600] +++ exited with 0 +++ [pid 601] +++ exited with 0 +++ [pid 599] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=599, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 602 ./strace-static-x86_64: Process 602 attached [pid 602] set_robust_list(0x5555900c96a0, 24) = 0 [pid 602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 602] setpgid(0, 0) = 0 [pid 602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 602] write(3, "1000", 4) = 4 [pid 602] close(3) = 0 [pid 602] write(1, "executing program\n", 18executing program ) = 18 [pid 602] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 602] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 602] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 602] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 602] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 30.924102][ T600] loop0: detected capacity change from 0 to 512 [ 30.933994][ T600] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 30.944675][ T600] EXT4-fs (loop0): fragment/cluster size (2048) != block size (1024) [pid 602] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[603]}, 88) = 603 [pid 602] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 603 attached [pid 603] set_robust_list(0x7ff437a4e9a0, 24 [pid 602] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 603] <... set_robust_list resumed>) = 0 [pid 603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 603] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 602] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 603] <... futex resumed>) = 0 [pid 602] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] creat("./bus", 000) = 3 [pid 603] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 602] <... futex resumed>) = 0 [pid 602] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] memfd_create("syzkaller", 0 [pid 602] <... futex resumed>) = 0 [pid 602] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] <... memfd_create resumed>) = 4 [pid 603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 602] <... futex resumed>) = 0 [pid 602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 603] <... mmap resumed>) = 0x7ff42f62e000 [pid 602] <... mmap resumed>) = 0x7ff42f60d000 [pid 603] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 602] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 602] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 602] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0}./strace-static-x86_64: Process 604 attached [pid 604] set_robust_list(0x7ff42f62d9a0, 24) = 0 [pid 604] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 604] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 602] <... clone3 resumed> => {parent_tid=[604]}, 88) = 604 [pid 602] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 603] <... write resumed>) = 262144 [pid 602] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] munmap(0x7ff42f62e000, 138412032) = 0 [pid 603] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 603] ioctl(5, LOOP_SET_FD, 4 [pid 604] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = 1 [pid 604] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 602] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 604] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 602] <... futex resumed>) = 0 [pid 602] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 602] <... futex resumed>) = 0 [pid 602] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 604] <... open resumed>) = 6 [pid 603] <... ioctl resumed>) = 0 [pid 604] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] close(4 [pid 604] <... futex resumed>) = 1 [pid 603] <... close resumed>) = 0 [pid 604] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] close(5 [pid 602] <... futex resumed>) = 0 [pid 603] <... close resumed>) = 0 [pid 603] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 602] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 602] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 603] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 603] ioctl(4, LOOP_CLR_FD) = 0 [pid 603] close(4) = 0 [pid 603] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 603] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 604] <... futex resumed>) = 0 [pid 604] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 602] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 602] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 604] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] <... futex resumed>) = 0 [pid 603] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 603] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 602] <... futex resumed>) = 0 [pid 602] exit_group(0 [pid 603] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 602] <... exit_group resumed>) = ? [pid 604] <... futex resumed>) = ? [pid 603] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 604] +++ exited with 0 +++ [pid 603] +++ exited with 0 +++ [pid 602] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=602, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [ 31.012882][ T603] loop0: detected capacity change from 0 to 512 restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 605 ./strace-static-x86_64: Process 605 attached [pid 605] set_robust_list(0x5555900c96a0, 24) = 0 [pid 605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 605] setpgid(0, 0) = 0 [pid 605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 605] write(3, "1000", 4) = 4 [pid 605] close(3) = 0 [pid 605] write(1, "executing program\n", 18) = 18 [pid 605] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 605] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 605] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 605] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[606]}, 88) = 606 [pid 605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 605] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 605] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 606 attached [pid 606] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 606] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 606] creat("./bus", 000) = 3 [pid 606] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] <... futex resumed>) = 0 [pid 605] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 605] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 605] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[607]}, 88) = 607 [pid 605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 605] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 605] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 606] <... futex resumed>) = 1 [pid 606] memfd_create("syzkaller", 0) = 4 [pid 606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 607 attached [pid 607] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 607] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 606] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 607] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 607] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 607] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 605] <... futex resumed>) = 0 [pid 605] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 607] <... futex resumed>) = 0 [pid 605] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 607] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 607] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 606] <... write resumed>) = 262144 [pid 605] <... futex resumed>) = 0 [pid 605] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 605] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 607] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 605] <... futex resumed>) = 0 [pid 605] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 605] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 607] <... futex resumed>) = 1 [pid 607] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 605] <... futex resumed>) = ? [pid 606] +++ killed by SIGBUS +++ [pid 607] +++ killed by SIGBUS +++ [pid 605] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=605, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 608 ./strace-static-x86_64: Process 608 attached [pid 608] set_robust_list(0x5555900c96a0, 24) = 0 [pid 608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 608] setpgid(0, 0) = 0 [pid 608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 608] write(3, "1000", 4) = 4 [pid 608] close(3) = 0 [pid 608] write(1, "executing program\n", 18executing program ) = 18 [pid 608] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 608] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 608] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 608] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 608] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[609]}, 88) = 609 [pid 608] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 608] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 609 attached [pid 609] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 609] creat("./bus", 000) = 3 [pid 609] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... futex resumed>) = 0 [pid 608] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 608] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 608] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 608] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[610]}, 88) = 610 [pid 608] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 608] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... futex resumed>) = 1 [pid 609] memfd_create("syzkaller", 0) = 4 [pid 609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 609] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 610 attached [pid 610] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 610] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 610] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 609] <... write resumed>) = 262144 [pid 610] <... mount resumed>) = 0 [pid 609] munmap(0x7ff42f60d000, 138412032 [pid 610] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... munmap resumed>) = 0 [pid 609] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 610] <... futex resumed>) = 1 [pid 608] <... futex resumed>) = 0 [pid 609] <... openat resumed>) = 5 [pid 609] ioctl(5, LOOP_SET_FD, 4 [pid 608] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 610] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 608] <... futex resumed>) = 0 [pid 610] <... open resumed>) = 6 [pid 609] <... ioctl resumed>) = 0 [pid 608] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] close(4) = 0 [pid 609] close(5 [pid 610] <... futex resumed>) = 0 [pid 609] <... close resumed>) = 0 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 610] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 608] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] <... mmap resumed>) = 0x400000000000 [pid 610] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 609] mkdir(0x400000000000, 0777 [pid 608] <... futex resumed>) = 0 [pid 608] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 609] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 609] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 609] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 609] ioctl(4, LOOP_CLR_FD) = 0 [pid 609] close(4) = 0 [pid 609] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 610] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... futex resumed>) = 0 [pid 610] <... futex resumed>) = 1 [pid 608] exit_group(0 [pid 610] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 608] <... exit_group resumed>) = ? [pid 609] <... futex resumed>) = ? [pid 610] <... futex resumed>) = ? [pid 609] +++ exited with 0 +++ [pid 610] +++ exited with 0 +++ [pid 608] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=608, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 611 ./strace-static-x86_64: Process 611 attached [pid 611] set_robust_list(0x5555900c96a0, 24) = 0 [pid 611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 611] setpgid(0, 0) = 0 [pid 611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 611] write(3, "1000", 4) = 4 [pid 611] close(3) = 0 executing program [pid 611] write(1, "executing program\n", 18) = 18 [pid 611] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 611] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 611] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 611] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 611] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 611] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[612]}, 88) = 612 [pid 611] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 611] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 612 attached [pid 612] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 612] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 612] creat("./bus", 000) = 3 [pid 612] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... futex resumed>) = 0 [pid 611] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 611] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 611] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 611] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[613]}, 88) = 613 [pid 611] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 611] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 612] <... futex resumed>) = 1 [pid 612] memfd_create("syzkaller", 0) = 4 [pid 612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 612] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 612] munmap(0x7ff42f60d000, 138412032) = 0 [pid 612] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 612] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 613 attached [ 31.112685][ T609] loop0: detected capacity change from 0 to 512 [pid 613] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 613] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 613] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 613] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 611] <... futex resumed>) = 0 [pid 611] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 611] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 613] <... futex resumed>) = 0 [pid 613] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 612] <... ioctl resumed>) = 0 [pid 613] <... open resumed>) = 6 [pid 612] close(4) = 0 [pid 612] close(5 [pid 613] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] <... close resumed>) = 0 [pid 611] <... futex resumed>) = 0 [pid 611] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 613] <... futex resumed>) = 1 [pid 613] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 612] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 612] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 613] <... mmap resumed>) = 0x400000000000 [pid 612] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 612] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 612] ioctl(4, LOOP_CLR_FD) = 0 [pid 612] close(4 [pid 613] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... futex resumed>) = 0 [pid 611] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 611] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 612] <... close resumed>) = 0 [pid 613] <... futex resumed>) = 1 [pid 612] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 613] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 612] <... futex resumed>) = 0 [pid 612] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] <... bpf resumed>) = 4 [pid 613] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 611] <... futex resumed>) = 0 [pid 611] exit_group(0) = ? [pid 612] <... futex resumed>) = ? [pid 613] +++ exited with 0 +++ [pid 612] +++ exited with 0 +++ [pid 611] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=611, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 614 ./strace-static-x86_64: Process 614 attached [pid 614] set_robust_list(0x5555900c96a0, 24) = 0 [pid 614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 614] setpgid(0, 0) = 0 [pid 614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 614] write(3, "1000", 4) = 4 [pid 614] close(3) = 0 [pid 614] write(1, "executing program\n", 18executing program ) = 18 [pid 614] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 614] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 614] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 614] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 614] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[615]}, 88) = 615 [pid 614] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 614] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 615 attached [pid 615] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 615] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 615] creat("./bus", 000) = 3 [pid 615] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] <... futex resumed>) = 0 [pid 614] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 614] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 614] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 614] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[616]}, 88) = 616 [pid 614] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 614] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 615] <... futex resumed>) = 1 [pid 615] memfd_create("syzkaller", 0) = 4 [pid 615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 616 attached [pid 615] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 615] munmap(0x7ff42f60d000, 138412032) = 0 [pid 615] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 31.168728][ T612] loop0: detected capacity change from 0 to 512 [pid 615] ioctl(5, LOOP_SET_FD, 4 [pid 616] set_robust_list(0x7ff437a2d9a0, 24 [pid 615] <... ioctl resumed>) = 0 [pid 616] <... set_robust_list resumed>) = 0 [pid 615] close(4 [pid 616] rt_sigprocmask(SIG_SETMASK, [], [pid 615] <... close resumed>) = 0 [pid 616] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 615] close(5 [pid 616] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 615] <... close resumed>) = 0 [pid 616] <... mount resumed>) = 0 [pid 615] mkdir("./bus", 0777 [pid 616] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 614] <... futex resumed>) = 0 [pid 614] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 616] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 616] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 614] <... futex resumed>) = 0 [pid 614] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 616] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 615] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 616] <... mmap resumed>) = 0x400000000000 [pid 616] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 614] <... futex resumed>) = 0 [pid 614] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 616] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 615] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 616] <... bpf resumed>) = 5 [pid 615] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 615] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 615] ioctl(6, LOOP_CLR_FD) = 0 [pid 615] close(6 [pid 616] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... close resumed>) = 0 [pid 614] <... futex resumed>) = 0 [pid 616] <... futex resumed>) = 1 [pid 616] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 615] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 615] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 614] exit_group(0) = ? [pid 616] <... futex resumed>) = ? [pid 616] +++ exited with 0 +++ [pid 615] <... futex resumed>) = ? [pid 615] +++ exited with 0 +++ [pid 614] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=614, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 31.214871][ T615] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 617 ./strace-static-x86_64: Process 617 attached [pid 617] set_robust_list(0x5555900c96a0, 24) = 0 [pid 617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 617] setpgid(0, 0) = 0 [pid 617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 617] write(3, "1000", 4) = 4 [pid 617] close(3) = 0 [pid 617] write(1, "executing program\n", 18executing program ) = 18 [pid 617] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 617] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 617] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 617] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 617] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 617] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 617] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[618]}, 88) = 618 [pid 617] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 617] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 617] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 618 attached [pid 618] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 618] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 618] creat("./bus", 000) = 3 [pid 618] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 618] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 617] <... futex resumed>) = 0 [pid 617] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 617] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 617] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 617] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 617] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 617] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 619 attached => {parent_tid=[619]}, 88) = 619 [pid 617] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 617] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 617] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] <... futex resumed>) = 0 [pid 618] memfd_create("syzkaller", 0) = 4 [pid 618] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 619] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 619] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 618] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 619] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 617] <... futex resumed>) = 0 [pid 617] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 617] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 619] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 619] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] <... futex resumed>) = 0 [pid 617] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 617] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 619] <... futex resumed>) = 1 [pid 619] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 618] <... write resumed>) = 262144 [pid 618] munmap(0x7ff42f60d000, 138412032 [pid 619] <... mmap resumed>) = 0x400000000000 [pid 618] <... munmap resumed>) = 0 [pid 619] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 618] ioctl(6, LOOP_SET_FD, 4 [pid 619] <... futex resumed>) = 1 [pid 617] <... futex resumed>) = 0 [pid 617] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 617] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 618] <... ioctl resumed>) = 0 [pid 618] close(4) = 0 [pid 618] close(6 [pid 619] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 619] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] <... futex resumed>) = 0 [pid 619] <... futex resumed>) = 1 [pid 619] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] <... close resumed>) = 0 [pid 618] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 618] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 618] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 618] ioctl(6, LOOP_CLR_FD) = 0 [pid 618] close(6) = 0 [pid 618] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 618] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 617] exit_group(0) = ? [pid 619] <... futex resumed>) = ? [pid 619] +++ exited with 0 +++ [pid 618] <... futex resumed>) = ? [ 31.308592][ T618] loop0: detected capacity change from 0 to 512 [ 31.309745][ T619] blk_update_request: I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 32 prio class 0 [pid 618] +++ exited with 0 +++ [pid 617] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=617, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 620 ./strace-static-x86_64: Process 620 attached [pid 620] set_robust_list(0x5555900c96a0, 24) = 0 [pid 620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 620] setpgid(0, 0) = 0 [pid 620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 620] write(3, "1000", 4) = 4 [pid 620] close(3) = 0 [pid 620] write(1, "executing program\n", 18executing program ) = 18 [pid 620] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 620] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 620] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 620] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 620] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[621]}, 88) = 621 [pid 620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 620] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 620] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 621 attached [pid 621] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 621] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 621] creat("./bus", 000) = 3 [pid 621] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 620] <... futex resumed>) = 0 [pid 620] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 620] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 620] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 620] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 621] memfd_create("syzkaller", 0 [pid 620] <... clone3 resumed> => {parent_tid=[622]}, 88) = 622 [pid 620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 621] <... memfd_create resumed>) = 4 [pid 620] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 620] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 622 attached [pid 622] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 622] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 621] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 622] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 622] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 622] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 620] <... futex resumed>) = 0 [pid 620] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 620] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 622] <... futex resumed>) = 0 [pid 622] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 622] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... write resumed>) = 262144 [pid 622] <... futex resumed>) = 1 [pid 622] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 621] munmap(0x7ff42f60d000, 138412032 [pid 620] <... futex resumed>) = 0 [pid 621] <... munmap resumed>) = 0 [pid 620] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 620] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 622] <... futex resumed>) = 0 [pid 621] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 622] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 620] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 620] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 622] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 621] <... openat resumed>) = 6 [pid 620] <... futex resumed>) = ? [pid 622] +++ killed by SIGBUS +++ [pid 621] +++ killed by SIGBUS +++ [pid 620] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=620, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 623 ./strace-static-x86_64: Process 623 attached [pid 623] set_robust_list(0x5555900c96a0, 24) = 0 [pid 623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 623] setpgid(0, 0) = 0 executing program [pid 623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 623] write(3, "1000", 4) = 4 [pid 623] close(3) = 0 [pid 623] write(1, "executing program\n", 18) = 18 [pid 623] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 623] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 623] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 623] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 623] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 623] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 623] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[625]}, 88) = 625 [pid 623] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 623] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 623] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 625 attached [pid 625] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 625] creat("./bus", 000) = 3 [pid 625] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 623] <... futex resumed>) = 0 [pid 623] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 623] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 623] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 623] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 623] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 623] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 625] <... futex resumed>) = 1 ./strace-static-x86_64: Process 626 attached [pid 625] memfd_create("syzkaller", 0) = 4 [pid 625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 623] <... clone3 resumed> => {parent_tid=[626]}, 88) = 626 [pid 626] set_robust_list(0x7ff437a2d9a0, 24 [pid 623] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 623] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 623] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 626] <... set_robust_list resumed>) = 0 [pid 626] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 626] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 625] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 625] munmap(0x7ff42f60d000, 138412032) = 0 [pid 626] <... mount resumed>) = 0 [pid 625] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 625] ioctl(5, LOOP_SET_FD, 4 [pid 626] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... ioctl resumed>) = 0 [pid 625] close(4) = 0 [pid 625] close(5 [pid 626] <... futex resumed>) = 1 [pid 625] <... close resumed>) = 0 [pid 623] <... futex resumed>) = 0 [pid 626] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 625] mkdir("./bus", 0777 [pid 623] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 625] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 623] <... futex resumed>) = 0 [pid 626] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 625] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 623] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 626] <... open resumed>) = 4 [pid 625] <... mount resumed>) = -1 ENODEV (No such device) [pid 626] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 626] <... futex resumed>) = 1 [pid 625] <... openat resumed>) = 5 [pid 623] <... futex resumed>) = 0 [pid 626] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 625] ioctl(5, LOOP_CLR_FD [pid 623] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... ioctl resumed>) = 0 [pid 623] <... futex resumed>) = 0 [pid 625] close(5 [pid 623] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] <... close resumed>) = 0 [pid 625] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 625] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] <... mmap resumed>) = 0x400000000000 [pid 626] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 623] <... futex resumed>) = 0 [pid 623] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... futex resumed>) = 0 [pid 623] <... futex resumed>) = 1 [pid 625] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 623] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 626] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 625] <... bpf resumed>) = 5 [pid 625] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 623] <... futex resumed>) = 0 [pid 625] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 623] exit_group(0 [pid 625] <... futex resumed>) = ? [pid 623] <... exit_group resumed>) = ? [pid 626] <... futex resumed>) = ? [pid 625] +++ exited with 0 +++ [pid 626] +++ exited with 0 +++ [pid 623] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=623, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 627 ./strace-static-x86_64: Process 627 attached [pid 627] set_robust_list(0x5555900c96a0, 24) = 0 [pid 627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 627] setpgid(0, 0) = 0 [pid 627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 627] write(3, "1000", 4) = 4 [pid 627] close(3executing program ) = 0 [pid 627] write(1, "executing program\n", 18) = 18 [pid 627] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 627] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 627] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 627] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 31.412585][ T625] loop0: detected capacity change from 0 to 512 [pid 627] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[628]}, 88) = 628 [pid 627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 627] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 628 attached [pid 628] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 628] creat("./bus", 000) = 3 [pid 628] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] <... futex resumed>) = 0 [pid 627] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 627] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 627] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 627] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[629]}, 88) = 629 [pid 627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 627] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 628] <... futex resumed>) = 1 [pid 628] memfd_create("syzkaller", 0) = 4 [pid 628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 628] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 629 attached [pid 629] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 629] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 629] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 627] <... futex resumed>) = 0 [pid 627] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 629] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 628] <... write resumed>) = 262144 [pid 629] <... open resumed>) = 5 [pid 628] munmap(0x7ff42f60d000, 138412032 [pid 629] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 628] <... munmap resumed>) = 0 [pid 627] <... futex resumed>) = 0 [pid 627] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 629] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 628] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 629] <... mmap resumed>) = 0x400000000000 [pid 628] <... openat resumed>) = 6 [pid 629] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 628] ioctl(6, LOOP_SET_FD, 4 [pid 629] <... futex resumed>) = 1 [pid 627] <... futex resumed>) = 0 [pid 627] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 628] <... ioctl resumed>) = 0 [pid 628] close(4) = 0 [pid 628] close(6) = 0 [pid 629] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 629] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] <... futex resumed>) = 0 [pid 629] <... futex resumed>) = 1 [pid 629] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 628] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 628] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 628] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 628] ioctl(6, LOOP_CLR_FD) = 0 [pid 628] close(6) = 0 [pid 628] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 628] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] exit_group(0) = ? [pid 629] <... futex resumed>) = ? [pid 629] +++ exited with 0 +++ [pid 628] <... futex resumed>) = ? [pid 628] +++ exited with 0 +++ [pid 627] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=627, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 630 ./strace-static-x86_64: Process 630 attached [pid 630] set_robust_list(0x5555900c96a0, 24) = 0 [pid 630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 executing program [pid 630] setpgid(0, 0) = 0 [pid 630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 630] write(3, "1000", 4) = 4 [pid 630] close(3) = 0 [pid 630] write(1, "executing program\n", 18) = 18 [pid 630] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 630] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 630] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 630] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[631]}, 88) = 631 [pid 630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 630] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 631 attached [pid 631] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 631] creat("./bus", 000) = 3 [pid 631] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 630] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 630] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[632]}, 88) = 632 [pid 630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 630] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 631] <... futex resumed>) = 1 [pid 631] memfd_create("syzkaller", 0) = 4 [pid 631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 631] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 631] munmap(0x7ff42f60d000, 138412032) = 0 [pid 631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 31.482799][ T628] loop0: detected capacity change from 0 to 512 [pid 631] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 632 attached [pid 632] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 632] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 632] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 632] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 632] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 630] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] <... futex resumed>) = 0 [pid 632] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 631] <... ioctl resumed>) = 0 [pid 631] close(4 [pid 632] <... open resumed>) = 6 [pid 632] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] <... futex resumed>) = 1 [pid 632] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 631] <... close resumed>) = 0 [pid 631] close(5) = 0 [pid 631] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 631] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 631] ioctl(4, LOOP_CLR_FD) = 0 [pid 631] close(4 [pid 632] <... mmap resumed>) = 0x400000000000 [pid 631] <... close resumed>) = 0 [pid 632] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 631] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 631] <... futex resumed>) = 0 [pid 631] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 630] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 631] <... futex resumed>) = 0 [pid 631] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 631] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 630] exit_group(0) = ? [pid 631] <... futex resumed>) = ? [pid 632] <... futex resumed>) = ? [pid 631] +++ exited with 0 +++ [pid 632] +++ exited with 0 +++ [pid 630] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=630, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 633 ./strace-static-x86_64: Process 633 attached [pid 633] set_robust_list(0x5555900c96a0, 24) = 0 [pid 633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 633] setpgid(0, 0) = 0 [pid 633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 633] write(3, "1000", 4) = 4 [pid 633] close(3) = 0 [pid 633] write(1, "executing program\n", 18) = 18 [pid 633] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 633] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 633] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 633] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 633] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[634]}, 88) = 634 [pid 633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 633] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 634 attached [pid 634] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 634] creat("./bus", 000) = 3 [pid 634] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] <... futex resumed>) = 0 [pid 633] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 633] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 633] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 633] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[635]}, 88) = 635 [pid 633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 633] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 634] <... futex resumed>) = 1 [pid 634] memfd_create("syzkaller", 0) = 4 [pid 634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 635 attached [pid 635] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 635] rt_sigprocmask(SIG_SETMASK, [], [pid 634] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 635] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 635] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 635] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] <... futex resumed>) = 0 [pid 633] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 635] <... futex resumed>) = 1 [pid 635] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 635] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] <... futex resumed>) = 0 [pid 633] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 635] <... futex resumed>) = 1 [pid 635] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 633] <... futex resumed>) = 0 [pid 633] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 635] <... futex resumed>) = 1 [pid 635] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 633] <... futex resumed>) = ? [pid 634] <... write resumed>) = ? [pid 634] +++ killed by SIGBUS +++ [pid 635] +++ killed by SIGBUS +++ [pid 633] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=633, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 636 ./strace-static-x86_64: Process 636 attached [pid 636] set_robust_list(0x5555900c96a0, 24) = 0 [pid 636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 636] setpgid(0, 0) = 0 [pid 636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 636] write(3, "1000", 4) = 4 [pid 636] close(3) = 0 executing program [pid 636] write(1, "executing program\n", 18) = 18 [pid 636] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 636] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 636] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 636] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 637 attached => {parent_tid=[637]}, 88) = 637 [pid 637] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 637] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 636] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 637] <... futex resumed>) = 0 [pid 637] creat("./bus", 000) = 3 [pid 636] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 637] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 636] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 636] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 637] <... futex resumed>) = 0 [pid 637] memfd_create("syzkaller", 0) = 4 [pid 637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 636] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 636] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 637] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 31.532892][ T631] loop0: detected capacity change from 0 to 512 [pid 636] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0} => {parent_tid=[638]}, 88) = 638 [pid 637] <... write resumed>) = 262144 [pid 636] rt_sigprocmask(SIG_SETMASK, [], [pid 637] munmap(0x7ff42f62e000, 138412032) = 0 [pid 637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 637] ioctl(5, LOOP_SET_FD, 4 [pid 636] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 638 attached [pid 637] <... ioctl resumed>) = 0 [pid 636] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 638] set_robust_list(0x7ff42f62d9a0, 24 [pid 636] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 638] <... set_robust_list resumed>) = 0 [pid 637] close(4) = 0 [pid 637] close(5 [pid 638] rt_sigprocmask(SIG_SETMASK, [], [pid 637] <... close resumed>) = 0 [pid 637] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 637] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 638] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 638] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 638] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 636] <... futex resumed>) = 0 [pid 638] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 636] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 636] <... futex resumed>) = 0 [pid 638] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 636] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 638] <... open resumed>) = 4 [pid 638] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 636] <... futex resumed>) = 0 [pid 636] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 638] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 636] <... futex resumed>) = 0 [pid 636] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 636] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 638] <... futex resumed>) = 0 [pid 638] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 638] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = 1 [ 31.595238][ T637] loop0: detected capacity change from 0 to 512 [ 31.607604][ T637] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 31.619420][ T637] EXT4-fs error (device loop0): ext4_free_branches:1030: inode #16: comm syz-executor316: invalid indirect mapped block 512 (level 0) [ 31.633237][ T637] EXT4-fs (loop0): Remounting filesystem read-only [ 31.639567][ T637] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 31.652658][ T637] EXT4-fs (loop0): Remounting filesystem read-only [ 31.658982][ T637] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5837: Corrupt filesystem [ 31.668407][ T637] EXT4-fs (loop0): Remounting filesystem read-only [ 31.674988][ T637] EXT4-fs error (device loop0) in ext4_orphan_del:305: Corrupt filesystem [ 31.683640][ T637] EXT4-fs (loop0): Remounting filesystem read-only [ 31.690057][ T637] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 31.703196][ T637] EXT4-fs (loop0): Remounting filesystem read-only [ 31.709522][ T637] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5837: Corrupt filesystem [ 31.718937][ T637] EXT4-fs (loop0): Remounting filesystem read-only [ 31.725305][ T637] EXT4-fs error (device loop0): ext4_truncate:4303: inode #16: comm syz-executor316: mark_inode_dirty error [ 31.736807][ T637] EXT4-fs (loop0): Remounting filesystem read-only [pid 638] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 636] exit_group(0 [pid 638] <... futex resumed>) = ? [pid 638] +++ exited with 0 +++ [pid 636] <... exit_group resumed>) = ? [pid 637] <... mount resumed>) = ? [ 31.743231][ T637] EXT4-fs error (device loop0) in ext4_process_orphan:347: Corrupt filesystem [ 31.752119][ T637] EXT4-fs (loop0): Remounting filesystem read-only [ 31.758551][ T637] EXT4-fs (loop0): 1 orphan inode deleted [ 31.764037][ T637] EXT4-fs (loop0): 1 truncate cleaned up [ 31.769463][ T637] EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x0000000000010000,block_validity,quota,. Quota mode: writeback. [pid 637] +++ exited with 0 +++ [pid 636] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=636, si_uid=0, si_status=0, si_utime=0, si_stime=16} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 641 ./strace-static-x86_64: Process 641 attached [pid 641] set_robust_list(0x5555900c96a0, 24) = 0 [pid 641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 641] setpgid(0, 0) = 0 [pid 641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 641] write(3, "1000", 4) = 4 [pid 641] close(3) = 0 executing program [pid 641] write(1, "executing program\n", 18) = 18 [pid 641] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 641] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 641] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 641] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 641] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 641] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[642]}, 88) = 642 [pid 641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 641] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 642 attached [pid 642] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 642] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 642] creat("./bus", 000) = 3 [pid 642] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 641] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 641] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 641] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[643]}, 88) = 643 [pid 641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 641] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] <... futex resumed>) = 1 [pid 642] memfd_create("syzkaller", 0) = 4 [pid 642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 642] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 642] munmap(0x7ff42f60d000, 138412032) = 0 [pid 642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 642] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 643 attached [pid 643] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 643] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 643] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 643] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 643] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 641] <... futex resumed>) = 0 [pid 641] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 641] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 643] <... futex resumed>) = 0 [pid 643] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 642] <... ioctl resumed>) = 0 [pid 643] <... open resumed>) = 6 [pid 642] close(4) = 0 [pid 642] close(5) = 0 [pid 642] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 642] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 642] ioctl(4, LOOP_CLR_FD) = 0 [pid 642] close(4) = 0 [pid 642] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 642] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 643] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 641] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] <... futex resumed>) = 0 [pid 642] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 643] <... futex resumed>) = 1 [pid 643] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] <... mmap resumed>) = 0x400000000000 [pid 642] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 642] <... futex resumed>) = 1 [pid 642] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 642] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 641] exit_group(0) = ? [pid 643] <... futex resumed>) = ? [pid 643] +++ exited with 0 +++ [pid 642] <... futex resumed>) = ? [ 32.041145][ T642] loop0: detected capacity change from 0 to 512 [pid 642] +++ exited with 0 +++ [pid 641] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=641, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 644 ./strace-static-x86_64: Process 644 attached [pid 644] set_robust_list(0x5555900c96a0, 24) = 0 [pid 644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 644] setpgid(0, 0) = 0 [pid 644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 644] write(3, "1000", 4) = 4 [pid 644] close(3executing program ) = 0 [pid 644] write(1, "executing program\n", 18) = 18 [pid 644] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 644] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 644] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 644] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 644] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 644] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 644] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[645]}, 88) = 645 [pid 644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 644] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 644] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 645 attached [pid 645] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 645] creat("./bus", 000) = 3 [pid 645] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 644] <... futex resumed>) = 0 [pid 644] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 644] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 644] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 644] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 644] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 644] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[646]}, 88) = 646 [pid 644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 644] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 644] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 645] <... futex resumed>) = 1 [pid 645] memfd_create("syzkaller", 0) = 4 [pid 645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 645] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 646 attached ) = 262144 [pid 646] set_robust_list(0x7ff437a2d9a0, 24 [pid 645] munmap(0x7ff42f60d000, 138412032 [pid 646] <... set_robust_list resumed>) = 0 [pid 645] <... munmap resumed>) = 0 [pid 646] rt_sigprocmask(SIG_SETMASK, [], [pid 645] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 646] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 645] <... openat resumed>) = 5 [pid 646] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 645] ioctl(5, LOOP_SET_FD, 4) = 0 [pid 646] <... mount resumed>) = 0 [pid 646] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 644] <... futex resumed>) = 0 [pid 646] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 644] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 645] close(4 [pid 644] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 645] <... close resumed>) = 0 [pid 645] close(5 [pid 646] <... open resumed>) = 6 [pid 646] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 646] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 644] <... futex resumed>) = 0 [pid 645] <... close resumed>) = 0 [pid 645] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 645] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 645] ioctl(4, LOOP_CLR_FD) = 0 [pid 645] close(4) = 0 [pid 645] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 645] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 644] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 644] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 645] <... futex resumed>) = 0 [pid 645] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 644] <... futex resumed>) = 0 [pid 644] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 644] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 645] <... futex resumed>) = 1 [pid 645] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 645] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 645] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 644] <... futex resumed>) = 0 [pid 644] exit_group(0) = ? [pid 646] <... futex resumed>) = 231 [pid 645] <... futex resumed>) = ? [pid 646] +++ exited with 0 +++ [pid 645] +++ exited with 0 +++ [pid 644] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=644, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 647 ./strace-static-x86_64: Process 647 attached [pid 647] set_robust_list(0x5555900c96a0, 24) = 0 [pid 647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 647] setpgid(0, 0) = 0 [pid 647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 647] write(3, "1000", 4) = 4 [pid 647] close(3) = 0 [pid 647] write(1, "executing program\n", 18executing program ) = 18 [pid 647] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 647] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 647] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 647] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 647] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 647] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 647] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[648]}, 88) = 648 [pid 647] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 647] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 647] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 648 attached [pid 648] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 648] creat("./bus", 000) = 3 [pid 648] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... futex resumed>) = 0 [pid 647] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 647] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 647] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 647] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 647] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 647] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[649]}, 88) = 649 [pid 647] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 647] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 647] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 648] <... futex resumed>) = 1 [pid 648] memfd_create("syzkaller", 0) = 4 [pid 648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [ 32.124024][ T645] loop0: detected capacity change from 0 to 512 [pid 648] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 648] munmap(0x7ff42f60d000, 138412032) = 0 [pid 648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 648] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 649 attached [pid 649] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 649] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 649] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 649] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 647] <... futex resumed>) = 0 [pid 647] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 647] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] <... futex resumed>) = 0 [pid 649] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 648] <... ioctl resumed>) = 0 [pid 649] <... open resumed>) = 6 [pid 648] close(4) = 0 [pid 648] close(5 [pid 649] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] <... close resumed>) = 0 [pid 649] <... futex resumed>) = 1 [pid 648] mkdir("./bus", 0777 [pid 647] <... futex resumed>) = 0 [pid 647] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 647] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 648] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 648] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 648] ioctl(4, LOOP_CLR_FD) = 0 [pid 648] close(4) = 0 [pid 648] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 649] <... mmap resumed>) = 0x400000000000 [pid 649] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... futex resumed>) = 0 [pid 647] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 647] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 648] <... futex resumed>) = 0 [pid 648] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 648] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... futex resumed>) = 0 [pid 647] exit_group(0) = ? [pid 648] <... futex resumed>) = ? [pid 648] +++ exited with 0 +++ [pid 649] <... futex resumed>) = ? [pid 649] +++ exited with 0 +++ [pid 647] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=647, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 650 ./strace-static-x86_64: Process 650 attached [pid 650] set_robust_list(0x5555900c96a0, 24) = 0 [pid 650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 650] setpgid(0, 0) = 0 [ 32.187828][ T648] loop0: detected capacity change from 0 to 512 [pid 650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 650] write(3, "1000", 4) = 4 [pid 650] close(3) = 0 [pid 650] write(1, "executing program\n", 18executing program ) = 18 [pid 650] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 650] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 650] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 650] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 650] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 650] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 650] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[651]}, 88) = 651 ./strace-static-x86_64: Process 651 attached [pid 650] rt_sigprocmask(SIG_SETMASK, [], [pid 651] set_robust_list(0x7ff437a4e9a0, 24 [pid 650] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 651] <... set_robust_list resumed>) = 0 [pid 650] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 651] creat("./bus", 000 [pid 650] <... futex resumed>) = 0 [pid 650] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 651] <... creat resumed>) = 3 [pid 651] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 650] <... futex resumed>) = 0 [pid 651] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 650] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 650] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 650] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 651] <... futex resumed>) = 0 [pid 650] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE [pid 651] memfd_create("syzkaller", 0 [pid 650] <... mprotect resumed>) = 0 [pid 650] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 651] <... memfd_create resumed>) = 4 [pid 650] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 652 attached [pid 651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 650] <... clone3 resumed> => {parent_tid=[652]}, 88) = 652 [pid 650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 650] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 650] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] set_robust_list(0x7ff437a2d9a0, 24 [pid 651] <... mmap resumed>) = 0x7ff42f60d000 [pid 652] <... set_robust_list resumed>) = 0 [pid 652] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 652] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 652] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 650] <... futex resumed>) = 0 [pid 650] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 650] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 652] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 650] <... futex resumed>) = 0 [pid 650] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 650] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 651] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x4000000012d7} --- [pid 652] <... futex resumed>) = 1 [pid 650] <... futex resumed>) = 0 [pid 650] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 650] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000}) = ? [pid 652] +++ killed by SIGBUS +++ [pid 651] +++ killed by SIGBUS +++ [pid 650] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=650, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 653 ./strace-static-x86_64: Process 653 attached [pid 653] set_robust_list(0x5555900c96a0, 24) = 0 [pid 653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 653] setpgid(0, 0) = 0 [pid 653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 653] write(3, "1000", 4executing program ) = 4 [pid 653] close(3) = 0 [pid 653] write(1, "executing program\n", 18) = 18 [pid 653] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 653] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 653] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 653] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 653] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 653] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 653] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[654]}, 88) = 654 [pid 653] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 653] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 653] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 654 attached [pid 654] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 654] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 654] creat("./bus", 000) = 3 [pid 654] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 653] <... futex resumed>) = 0 [pid 653] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 653] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 653] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 653] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE [pid 654] <... futex resumed>) = 1 [pid 653] <... mprotect resumed>) = 0 [pid 653] rt_sigprocmask(SIG_BLOCK, ~[], [pid 654] memfd_create("syzkaller", 0 [pid 653] <... rt_sigprocmask resumed>[], 8) = 0 [pid 653] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[655]}, 88) = 655 ./strace-static-x86_64: Process 655 attached [pid 654] <... memfd_create resumed>) = 4 [pid 653] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 655] set_robust_list(0x7ff437a2d9a0, 24 [pid 653] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 654] <... mmap resumed>) = 0x7ff42f60d000 [pid 653] <... futex resumed>) = 0 [pid 653] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 655] <... set_robust_list resumed>) = 0 [pid 655] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 655] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 655] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 653] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 653] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 655] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 654] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 655] <... open resumed>) = 5 [pid 655] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 653] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 653] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 655] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 654] <... write resumed>) = 262144 [pid 655] <... futex resumed>) = 1 [pid 653] <... futex resumed>) = 0 [pid 654] munmap(0x7ff42f60d000, 138412032 [pid 653] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 655] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 653] <... futex resumed>) = 0 [pid 653] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 654] <... munmap resumed>) = 0 [pid 653] <... futex resumed>) = ? [pid 654] +++ killed by SIGBUS +++ [pid 655] +++ killed by SIGBUS +++ [pid 653] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=653, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 656 ./strace-static-x86_64: Process 656 attached [pid 656] set_robust_list(0x5555900c96a0, 24) = 0 [pid 656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 656] setpgid(0, 0) = 0 [pid 656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 656] write(3, "1000", 4) = 4 [pid 656] close(3) = 0 [pid 656] write(1, "executing program\n", 18) = 18 [pid 656] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 656] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 656] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 656] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 656] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 656] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[657]}, 88) = 657 [pid 656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 656] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 657 attached [pid 657] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 657] creat("./bus", 000) = 3 [pid 657] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = 0 [pid 657] <... futex resumed>) = 1 [pid 656] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 656] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 656] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 656] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[658]}, 88) = 658 [pid 656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 656] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 658 attached [pid 657] memfd_create("syzkaller", 0 [pid 658] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 657] <... memfd_create resumed>) = 4 [pid 658] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 658] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 658] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 656] <... futex resumed>) = 0 [pid 656] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 658] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 658] <... futex resumed>) = 1 [pid 656] <... futex resumed>) = 0 [pid 656] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 658] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 656] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] <... mmap resumed>) = 0x400000000000 [pid 658] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 656] <... futex resumed>) = 0 [pid 656] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 656] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 658] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 656] <... futex resumed>) = ? [pid 657] <... write resumed>) = ? [pid 657] +++ killed by SIGBUS +++ [pid 658] +++ killed by SIGBUS +++ [pid 656] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=656, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 659 ./strace-static-x86_64: Process 659 attached [pid 659] set_robust_list(0x5555900c96a0, 24) = 0 [pid 659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 659] setpgid(0, 0) = 0 [pid 659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 659] write(3, "1000", 4) = 4 [pid 659] close(3) = 0 executing program [pid 659] write(1, "executing program\n", 18) = 18 [pid 659] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 659] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 659] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 659] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 659] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 659] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[660]}, 88) = 660 [pid 659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 659] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 660 attached [pid 660] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 660] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 660] creat("./bus", 000) = 3 [pid 660] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = 0 [pid 659] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 659] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 659] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 659] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[661]}, 88) = 661 [pid 659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 659] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... futex resumed>) = 1 [pid 660] memfd_create("syzkaller", 0) = 4 [pid 660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 661 attached [pid 660] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 661] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 661] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 661] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 660] <... write resumed>) = 262144 [pid 661] <... mount resumed>) = 0 [pid 660] munmap(0x7ff42f60d000, 138412032 [pid 661] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = 0 [pid 659] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] <... futex resumed>) = 1 [pid 661] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 661] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = 0 [pid 659] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] <... futex resumed>) = 1 [pid 661] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 659] <... futex resumed>) = 0 [pid 659] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 659] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 661] <... futex resumed>) = 1 [pid 661] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 659] <... futex resumed>) = ? [pid 660] <... munmap resumed>) = ? [pid 661] +++ killed by SIGBUS +++ [pid 660] +++ killed by SIGBUS +++ [pid 659] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=659, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 662 ./strace-static-x86_64: Process 662 attached [pid 662] set_robust_list(0x5555900c96a0, 24) = 0 [pid 662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 662] setpgid(0, 0) = 0 [pid 662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 662] write(3, "1000", 4) = 4 [pid 662] close(3) = 0 [pid 662] write(1, "executing program\n", 18) = 18 [pid 662] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 662] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 662] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 662] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 662] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 662] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[663]}, 88) = 663 [pid 662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 662] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 663 attached [pid 663] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 663] creat("./bus", 000) = 3 [pid 663] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] <... futex resumed>) = 0 [pid 662] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 662] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 662] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 662] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[664]}, 88) = 664 [pid 662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 662] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 663] <... futex resumed>) = 1 [pid 663] memfd_create("syzkaller", 0) = 4 [pid 663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 664 attached [pid 664] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 664] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 664] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 664] <... futex resumed>) = 1 [pid 663] <... write resumed>) = 262144 [pid 662] <... futex resumed>) = 0 [pid 664] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 663] munmap(0x7ff42f60d000, 138412032 [pid 662] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 664] <... open resumed>) = 5 [pid 664] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 662] <... futex resumed>) = 0 [pid 662] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 664] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 663] <... munmap resumed>) = 0 [pid 664] <... mmap resumed>) = 0x400000000000 [pid 663] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 664] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] <... futex resumed>) = 0 [pid 662] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 662] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 664] <... futex resumed>) = 1 [pid 664] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 662] <... futex resumed>) = ? [pid 663] <... openat resumed>) = ? [pid 663] +++ killed by SIGBUS +++ [pid 664] +++ killed by SIGBUS +++ [pid 662] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=662, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 665 ./strace-static-x86_64: Process 665 attached [pid 665] set_robust_list(0x5555900c96a0, 24) = 0 [pid 665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 665] setpgid(0, 0) = 0 [pid 665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 665] write(3, "1000", 4) = 4 [pid 665] close(3) = 0 [pid 665] write(1, "executing program\n", 18executing program ) = 18 [pid 665] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 665] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 665] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 665] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 665] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 666 attached => {parent_tid=[666]}, 88) = 666 [pid 666] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 666] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 665] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 666] <... futex resumed>) = 0 [pid 666] creat("./bus", 000) = 3 [pid 665] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 666] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 665] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 666] <... futex resumed>) = 0 [pid 666] memfd_create("syzkaller", 0 [pid 665] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... memfd_create resumed>) = 4 [pid 666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 665] <... futex resumed>) = 0 [pid 665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 665] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 666] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 665] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0} => {parent_tid=[667]}, 88) = 667 [pid 666] <... write resumed>) = 262144 [pid 665] rt_sigprocmask(SIG_SETMASK, [], [pid 666] munmap(0x7ff42f62e000, 138412032) = 0 [pid 666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 666] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 667 attached [pid 665] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 666] <... ioctl resumed>) = 0 [pid 666] close(4) = 0 [pid 667] set_robust_list(0x7ff42f62d9a0, 24 [pid 666] close(5 [pid 665] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 665] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] <... set_robust_list resumed>) = 0 [pid 667] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 667] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 666] <... close resumed>) = 0 [pid 667] <... mount resumed>) = 0 [pid 666] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 666] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 667] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] <... futex resumed>) = 0 [pid 665] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 665] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] <... futex resumed>) = 1 [pid 667] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 667] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] <... futex resumed>) = 0 [pid 665] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 665] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] <... futex resumed>) = 1 [pid 667] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 665] <... futex resumed>) = 0 [pid 665] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 665] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 667] <... futex resumed>) = 1 [pid 667] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 667] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] <... futex resumed>) = 0 [pid 667] <... futex resumed>) = 1 [ 32.363427][ T666] loop0: detected capacity change from 0 to 512 [ 32.374716][ T666] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 32.386100][ T666] EXT4-fs error (device loop0): ext4_free_branches:1030: inode #16: comm syz-executor316: invalid indirect mapped block 512 (level 0) [ 32.400737][ T666] EXT4-fs (loop0): Remounting filesystem read-only [ 32.407122][ T666] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 32.420204][ T666] EXT4-fs (loop0): Remounting filesystem read-only [ 32.426555][ T666] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5837: Corrupt filesystem [ 32.435985][ T666] EXT4-fs (loop0): Remounting filesystem read-only [ 32.442365][ T666] EXT4-fs error (device loop0) in ext4_orphan_del:305: Corrupt filesystem [ 32.450828][ T666] EXT4-fs (loop0): Remounting filesystem read-only [ 32.457259][ T666] EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor316: Invalid inode table block 5 in block_group 0 [ 32.470403][ T666] EXT4-fs (loop0): Remounting filesystem read-only [ 32.476748][ T666] EXT4-fs error (device loop0) in ext4_reserve_inode_write:5837: Corrupt filesystem [ 32.486681][ T666] EXT4-fs (loop0): Remounting filesystem read-only [ 32.493038][ T666] EXT4-fs error (device loop0): ext4_truncate:4303: inode #16: comm syz-executor316: mark_inode_dirty error [ 32.504514][ T666] EXT4-fs (loop0): Remounting filesystem read-only [pid 667] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] exit_group(0 [pid 667] <... futex resumed>) = ? [pid 665] <... exit_group resumed>) = ? [pid 667] +++ exited with 0 +++ [pid 666] <... mount resumed>) = ? [ 32.510831][ T666] EXT4-fs error (device loop0) in ext4_process_orphan:347: Corrupt filesystem [ 32.519718][ T666] EXT4-fs (loop0): Remounting filesystem read-only [ 32.526146][ T666] EXT4-fs (loop0): 1 orphan inode deleted [ 32.531621][ T666] EXT4-fs (loop0): 1 truncate cleaned up [ 32.537057][ T666] EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x0000000000010000,block_validity,quota,. Quota mode: writeback. [pid 666] +++ exited with 0 +++ [pid 665] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=665, si_uid=0, si_status=0, si_utime=0, si_stime=20} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 670 attached , child_tidptr=0x5555900c9690) = 670 [pid 670] set_robust_list(0x5555900c96a0, 24) = 0 [pid 670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 670] setpgid(0, 0) = 0 [pid 670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 670] write(3, "1000", 4) = 4 [pid 670] close(3) = 0 [pid 670] write(1, "executing program\n", 18executing program ) = 18 [pid 670] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 670] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 670] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 670] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 670] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[671]}, 88) = 671 [pid 670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 670] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 671 attached [pid 671] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 671] creat("./bus", 000) = 3 [pid 671] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 670] <... futex resumed>) = 0 [pid 670] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 671] memfd_create("syzkaller", 0 [pid 670] <... mmap resumed>) = 0x7ff437a0d000 [pid 670] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 670] rt_sigprocmask(SIG_BLOCK, ~[], [pid 671] <... memfd_create resumed>) = 4 [pid 670] <... rt_sigprocmask resumed>[], 8) = 0 [pid 670] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 670] <... clone3 resumed> => {parent_tid=[672]}, 88) = 672 [pid 671] <... mmap resumed>) = 0x7ff42f60d000 [pid 670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 670] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 672 attached [pid 672] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 672] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 672] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 672] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... futex resumed>) = 0 [pid 670] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] <... futex resumed>) = 1 [pid 672] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 672] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... futex resumed>) = 0 [pid 670] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 670] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] <... futex resumed>) = 1 [pid 672] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 670] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = ? [pid 672] +++ killed by SIGBUS +++ [pid 671] +++ killed by SIGBUS +++ [pid 670] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=670, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 673 ./strace-static-x86_64: Process 673 attached [pid 673] set_robust_list(0x5555900c96a0, 24) = 0 [pid 673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 673] setpgid(0, 0) = 0 [pid 673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 673] write(3, "1000", 4) = 4 [pid 673] close(3) = 0 [pid 673] write(1, "executing program\n", 18executing program ) = 18 [pid 673] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 673] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 673] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 673] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 673] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 673] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 674 attached => {parent_tid=[674]}, 88) = 674 [pid 674] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 674] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 674] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 673] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 674] <... futex resumed>) = 0 [pid 674] creat("./bus", 000) = 3 [pid 673] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 674] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 674] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 674] <... futex resumed>) = 0 [pid 674] memfd_create("syzkaller", 0) = 4 [pid 674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 673] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 674] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 673] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE [pid 674] <... write resumed>) = 262144 [pid 673] <... mprotect resumed>) = 0 [pid 674] munmap(0x7ff42f62e000, 138412032 [pid 673] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 674] <... munmap resumed>) = 0 [pid 674] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 673] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0}./strace-static-x86_64: Process 675 attached [pid 675] set_robust_list(0x7ff42f62d9a0, 24) = 0 [pid 675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 675] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] <... clone3 resumed> => {parent_tid=[675]}, 88) = 675 [pid 674] <... openat resumed>) = 5 [pid 674] ioctl(5, LOOP_SET_FD, 4 [pid 673] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 673] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] <... ioctl resumed>) = 0 [pid 674] close(4) = 0 [pid 674] close(5 [pid 675] <... futex resumed>) = 0 [pid 673] <... futex resumed>) = 1 [pid 675] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 675] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 675] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 674] <... close resumed>) = 0 [pid 674] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 674] mount("/dev/loop0", "./bus", "ext4", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"... [pid 673] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] <... futex resumed>) = 0 [pid 675] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 675] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 675] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] <... futex resumed>) = 1 [pid 673] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] <... futex resumed>) = 0 [pid 675] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 673] <... futex resumed>) = 1 [pid 673] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 675] <... mmap resumed>) = 0x400000000000 [pid 675] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 675] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] <... futex resumed>) = 0 [pid 673] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 675] <... futex resumed>) = 0 [pid 673] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 675] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 675] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 675] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] <... futex resumed>) = 0 [ 32.805732][ T674] loop0: detected capacity change from 0 to 512 [ 32.821384][ T674] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 32.832847][ T674] EXT4-fs error (device loop0): ext4_free_branches:1030: inode #16: comm syz-executor316: invalid indirect mapped block 512 (level 0) [ 32.846689][ T674] EXT4-fs (loop0): Remounting filesystem read-only [pid 674] <... mount resumed>) = -1 ENOTDIR (Not a directory) [pid 674] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 674] ioctl(6, LOOP_CLR_FD) = 0 [pid 674] close(6) = 0 [pid 674] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 674] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] exit_group(0) = ? [pid 674] <... futex resumed>) = ? [pid 674] +++ exited with 0 +++ [pid 675] <... futex resumed>) = ? [pid 675] +++ exited with 0 +++ [pid 673] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=673, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 677 ./strace-static-x86_64: Process 677 attached [pid 677] set_robust_list(0x5555900c96a0, 24) = 0 [pid 677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 677] setpgid(0, 0) = 0 [pid 677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 677] write(3, "1000", 4) = 4 [pid 677] close(3) = 0 [pid 677] write(1, "executing program\n", 18executing program ) = 18 [pid 677] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 677] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 677] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 677] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 677] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 677] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 678 attached [pid 678] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 678] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 678] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] <... clone3 resumed> => {parent_tid=[678]}, 88) = 678 [pid 677] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 677] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 678] <... futex resumed>) = 0 [pid 678] creat("./bus", 000 [pid 677] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 678] <... creat resumed>) = 3 [pid 678] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 677] <... futex resumed>) = 0 [pid 677] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 678] memfd_create("syzkaller", 0 [pid 677] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 678] <... memfd_create resumed>) = 4 [pid 678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [ 32.853276][ T674] EXT4-fs (loop0): 1 orphan inode deleted [ 32.858805][ T674] EXT4-fs (loop0): 1 truncate cleaned up [ 32.864305][ T674] EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x0000000000010000,block_validity,quota,. Quota mode: writeback. [pid 677] <... mmap resumed>) = 0x7ff42f60d000 [pid 677] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 678] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 677] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 677] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0} => {parent_tid=[679]}, 88) = 679 [pid 677] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 677] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] <... write resumed>) = 262144 [pid 677] <... futex resumed>) = 0 ./strace-static-x86_64: Process 679 attached [pid 678] munmap(0x7ff42f62e000, 138412032 [pid 677] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 678] <... munmap resumed>) = 0 [pid 679] set_robust_list(0x7ff42f62d9a0, 24 [pid 678] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 679] <... set_robust_list resumed>) = 0 [pid 678] <... openat resumed>) = 5 [pid 678] ioctl(5, LOOP_SET_FD, 4 [pid 679] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 679] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 679] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 679] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] <... futex resumed>) = 0 [pid 677] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 679] <... futex resumed>) = 0 [pid 677] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 678] <... ioctl resumed>) = 0 [pid 678] close(4) = 0 [pid 679] <... open resumed>) = 6 [pid 678] close(5 [pid 679] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] <... close resumed>) = 0 [pid 679] <... futex resumed>) = 1 [pid 679] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 678] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 678] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 678] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 678] ioctl(4, LOOP_CLR_FD) = 0 [pid 678] close(4) = 0 [pid 678] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 678] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] <... futex resumed>) = 0 [pid 677] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 677] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 678] <... futex resumed>) = 0 [pid 678] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 677] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 677] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 678] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 678] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... futex resumed>) = 0 [pid 677] exit_group(0) = ? [pid 679] <... futex resumed>) = ? [pid 679] +++ exited with 0 +++ [pid 678] <... futex resumed>) = ? [pid 678] +++ exited with 0 +++ [pid 677] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=677, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 680 ./strace-static-x86_64: Process 680 attached [pid 680] set_robust_list(0x5555900c96a0, 24) = 0 [pid 680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 680] setpgid(0, 0) = 0 [pid 680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 680] write(3, "1000", 4) = 4 [pid 680] close(3) = 0 [pid 680] write(1, "executing program\n", 18executing program ) = 18 [pid 680] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 680] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 680] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 680] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 680] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 680] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 681 attached => {parent_tid=[681]}, 88) = 681 [pid 681] set_robust_list(0x7ff437a4e9a0, 24 [pid 680] rt_sigprocmask(SIG_SETMASK, [], [pid 681] <... set_robust_list resumed>) = 0 [pid 680] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 681] rt_sigprocmask(SIG_SETMASK, [], [pid 680] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 680] <... futex resumed>) = 0 [pid 680] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 681] creat("./bus", 000) = 3 [pid 681] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] <... futex resumed>) = 0 [pid 680] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 680] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 680] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 680] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[682]}, 88) = 682 [pid 681] <... futex resumed>) = 1 [pid 680] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 680] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 682 attached [pid 682] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 682] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 682] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 682] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] <... futex resumed>) = 0 [pid 680] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 682] <... futex resumed>) = 1 [pid 682] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 682] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] <... futex resumed>) = 0 [pid 680] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 682] <... futex resumed>) = 1 [pid 682] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 680] <... futex resumed>) = 0 [pid 680] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 682] <... futex resumed>) = 1 [pid 682] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 680] <... futex resumed>) = ? [pid 681] +++ killed by SIGBUS +++ [pid 682] +++ killed by SIGBUS +++ [pid 680] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=680, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 683 ./strace-static-x86_64: Process 683 attached [pid 683] set_robust_list(0x5555900c96a0, 24) = 0 [pid 683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 683] setpgid(0, 0) = 0 [pid 683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 683] write(3, "1000", 4) = 4 [pid 683] close(3) = 0 [pid 683] write(1, "executing program\n", 18) = 18 [pid 683] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 683] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 683] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 683] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 683] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 683] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[684]}, 88) = 684 [pid 683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 683] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 684 attached [pid 684] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 684] creat("./bus", 000) = 3 [pid 684] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 683] <... futex resumed>) = 0 [pid 683] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 683] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 683] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 683] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[685]}, 88) = 685 [pid 683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 683] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 684] <... futex resumed>) = 1 [pid 684] memfd_create("syzkaller", 0) = 4 [pid 684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 684] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 684] munmap(0x7ff42f60d000, 138412032) = 0 [pid 684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 684] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 685 attached [ 32.939639][ T678] loop0: detected capacity change from 0 to 512 [pid 685] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 684] <... ioctl resumed>) = 0 [pid 685] rt_sigprocmask(SIG_SETMASK, [], [pid 684] close(4 [pid 685] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 685] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 684] <... close resumed>) = 0 [pid 685] <... mount resumed>) = 0 [pid 684] close(5 [pid 685] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 683] <... futex resumed>) = 0 [pid 685] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 683] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 685] <... open resumed>) = 4 [pid 684] <... close resumed>) = 0 [pid 684] mkdir("./bus", 0777 [pid 685] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 684] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 684] ioctl(5, LOOP_CLR_FD) = 0 [pid 684] close(5) = 0 [pid 684] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 684] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 685] <... futex resumed>) = 1 [pid 683] <... futex resumed>) = 0 [pid 683] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 684] <... futex resumed>) = 0 [pid 683] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 684] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 685] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 684] <... mmap resumed>) = 0x400000000000 [pid 684] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 683] <... futex resumed>) = 0 [pid 683] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 684] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 684] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 683] <... futex resumed>) = 0 [pid 683] exit_group(0) = ? [pid 685] <... futex resumed>) = ? [pid 685] +++ exited with 0 +++ [pid 684] +++ exited with 0 +++ [pid 683] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=683, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 32.985484][ T684] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWRexecuting program ) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 686 ./strace-static-x86_64: Process 686 attached [pid 686] set_robust_list(0x5555900c96a0, 24) = 0 [pid 686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 686] setpgid(0, 0) = 0 [pid 686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 686] write(3, "1000", 4) = 4 [pid 686] close(3) = 0 [pid 686] write(1, "executing program\n", 18) = 18 [pid 686] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 686] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 686] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 686] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 686] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 686] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 686] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[687]}, 88) = 687 [pid 686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 686] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 686] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 687 attached [pid 687] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 687] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 687] creat("./bus", 000) = 3 [pid 687] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... futex resumed>) = 0 [pid 686] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 686] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 686] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 686] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 686] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 686] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[688]}, 88) = 688 [pid 686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 686] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 688 attached [pid 687] <... futex resumed>) = 1 [pid 686] <... futex resumed>) = 0 [pid 686] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 688] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 687] memfd_create("syzkaller", 0 [pid 688] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 687] <... memfd_create resumed>) = 4 [pid 687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 688] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 687] <... mmap resumed>) = 0x7ff42f60d000 [pid 686] <... futex resumed>) = 0 [pid 686] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 688] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 686] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] <... open resumed>) = 5 [pid 688] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 686] <... futex resumed>) = 0 [pid 688] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 686] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 686] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] <... mmap resumed>) = 0x400000000000 [pid 688] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 686] <... futex resumed>) = 0 [pid 686] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 688] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 686] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000}) = ? [pid 688] +++ killed by SIGBUS +++ [pid 687] +++ killed by SIGBUS +++ [pid 686] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=686, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 689 ./strace-static-x86_64: Process 689 attached [pid 689] set_robust_list(0x5555900c96a0, 24) = 0 [pid 689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 689] setpgid(0, 0) = 0 [pid 689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 689] write(3, "1000", 4) = 4 [pid 689] close(3) = 0 [pid 689] write(1, "executing program\n", 18) = 18 [pid 689] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 689] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 689] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 689] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 689] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 689] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[690]}, 88) = 690 [pid 689] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 689] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 690 attached [pid 690] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 690] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 690] creat("./bus", 000) = 3 [pid 690] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] <... futex resumed>) = 0 [pid 689] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 689] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 689] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 689] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[691]}, 88) = 691 [pid 689] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 689] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] <... futex resumed>) = 1 [pid 690] memfd_create("syzkaller", 0) = 4 [pid 690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 690] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 690] munmap(0x7ff42f60d000, 138412032) = 0 [pid 690] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 690] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 691 attached [pid 691] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 691] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 691] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 691] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 691] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 689] <... futex resumed>) = 0 [pid 689] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 689] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... futex resumed>) = 0 [pid 691] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 690] <... ioctl resumed>) = 0 [pid 691] <... open resumed>) = 6 [pid 690] close(4) = 0 [pid 690] close(5 [pid 691] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... close resumed>) = 0 [pid 691] <... futex resumed>) = 1 [pid 690] mkdir("./bus", 0777 [pid 691] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 690] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 690] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 690] ioctl(4, LOOP_CLR_FD) = 0 [pid 690] close(4) = 0 [pid 690] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 690] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 689] <... futex resumed>) = 0 [pid 689] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 689] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] <... futex resumed>) = 0 [pid 690] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 689] <... futex resumed>) = 0 [pid 689] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 690] <... futex resumed>) = 1 [pid 690] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 690] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] <... futex resumed>) = 0 [pid 689] exit_group(0) = ? [pid 691] <... futex resumed>) = ? [pid 691] +++ exited with 0 +++ [pid 690] <... futex resumed>) = ? [pid 690] +++ exited with 0 +++ [pid 689] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=689, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 33.081148][ T690] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 692 ./strace-static-x86_64: Process 692 attached [pid 692] set_robust_list(0x5555900c96a0, 24) = 0 [pid 692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 692] setpgid(0, 0) = 0 [pid 692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 692] write(3, "1000", 4) = 4 [pid 692] close(3) = 0 executing program [pid 692] write(1, "executing program\n", 18) = 18 [pid 692] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 692] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 692] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 692] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 692] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 692] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[693]}, 88) = 693 [pid 692] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 692] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 693 attached [pid 693] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 693] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 693] creat("./bus", 000) = 3 [pid 693] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... futex resumed>) = 0 [pid 692] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 692] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 692] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 692] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[694]}, 88) = 694 [pid 692] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 692] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 693] <... futex resumed>) = 1 [pid 693] memfd_create("syzkaller", 0) = 4 [pid 693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 694 attached [pid 693] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 693] munmap(0x7ff42f60d000, 138412032) = 0 [pid 693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 693] ioctl(5, LOOP_SET_FD, 4 [pid 694] set_robust_list(0x7ff437a2d9a0, 24 [pid 693] <... ioctl resumed>) = 0 [pid 694] <... set_robust_list resumed>) = 0 [pid 693] close(4 [pid 694] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 694] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 693] <... close resumed>) = 0 [pid 694] <... mount resumed>) = 0 [pid 693] close(5 [pid 694] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 692] <... futex resumed>) = 0 [pid 692] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 694] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 692] <... futex resumed>) = 0 [pid 692] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 693] <... close resumed>) = 0 [pid 693] mkdir(0x400000000000, 0777 [pid 694] <... mmap resumed>) = 0x400000000000 [pid 694] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... futex resumed>) = 0 [pid 692] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 694] <... futex resumed>) = 1 [pid 694] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 694] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... futex resumed>) = 0 [pid 694] <... futex resumed>) = 1 [pid 694] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 693] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 693] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 693] ioctl(6, LOOP_CLR_FD) = 0 [pid 693] close(6) = 0 [pid 693] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 693] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 692] exit_group(0) = ? [pid 694] <... futex resumed>) = ? [pid 694] +++ exited with 0 +++ [pid 693] <... futex resumed>) = ? [pid 693] +++ exited with 0 +++ [pid 692] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=692, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 695 ./strace-static-x86_64: Process 695 attached [pid 695] set_robust_list(0x5555900c96a0, 24) = 0 [pid 695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 695] setpgid(0, 0) = 0 [pid 695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 695] write(3, "1000", 4) = 4 [pid 695] close(3) = 0 [pid 695] write(1, "executing program\n", 18) = 18 [pid 695] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 695] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 695] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 695] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 695] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 695] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 696 attached => {parent_tid=[696]}, 88) = 696 [pid 695] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 695] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 696] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 696] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 696] creat("./bus", 000) = 3 [ 33.158919][ T693] loop0: detected capacity change from 0 to 512 [pid 696] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 695] <... futex resumed>) = 0 [pid 695] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 695] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 695] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 695] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[697]}, 88) = 697 [pid 695] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 695] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 697 attached [pid 697] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 697] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 697] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 697] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... futex resumed>) = 0 [pid 695] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] <... futex resumed>) = 1 [pid 697] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 697] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... futex resumed>) = 0 [pid 695] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] <... futex resumed>) = 1 [pid 697] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 696] memfd_create("syzkaller", 0 [pid 697] <... mmap resumed>) = 0x400000000000 [pid 696] <... memfd_create resumed>) = 5 [pid 697] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... futex resumed>) = 0 [pid 695] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 695] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 697] <... futex resumed>) = 1 [pid 697] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 695] <... futex resumed>) = ? [pid 697] +++ killed by SIGBUS +++ [pid 696] +++ killed by SIGBUS +++ [pid 695] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=695, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 698 ./strace-static-x86_64: Process 698 attached [pid 698] set_robust_list(0x5555900c96a0, 24) = 0 [pid 698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 698] setpgid(0, 0) = 0 [pid 698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 698] write(3, "1000", 4) = 4 [pid 698] close(3) = 0 [pid 698] write(1, "executing program\n", 18) = 18 [pid 698] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 698] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 698] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 698] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 698] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 698] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[699]}, 88) = 699 [pid 698] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 698] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 699 attached [pid 699] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 699] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 699] creat("./bus", 000) = 3 [pid 699] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 698] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 698] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 698] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[700]}, 88) = 700 [pid 698] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 698] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] <... futex resumed>) = 1 [pid 699] memfd_create("syzkaller", 0) = 4 [pid 699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 700 attached [pid 700] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 700] rt_sigprocmask(SIG_SETMASK, [], [pid 699] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 700] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 700] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 700] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 700] <... futex resumed>) = 1 [pid 700] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 700] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 700] <... futex resumed>) = 1 [pid 700] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 699] <... write resumed>) = 262144 [pid 700] <... mmap resumed>) = 0x400000000000 [pid 699] munmap(0x7ff42f60d000, 138412032 [pid 700] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = 0 [pid 698] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 698] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 700] <... futex resumed>) = 1 [pid 700] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 699] <... munmap resumed>) = ? [pid 698] <... futex resumed>) = ? [pid 699] +++ killed by SIGBUS +++ [pid 700] +++ killed by SIGBUS +++ [pid 698] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=698, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 701 ./strace-static-x86_64: Process 701 attached [pid 701] set_robust_list(0x5555900c96a0, 24) = 0 [pid 701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 701] setpgid(0, 0) = 0 [pid 701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ) = 3 [pid 701] write(3, "1000", 4) = 4 [pid 701] close(3) = 0 [pid 701] write(1, "executing program\n", 18) = 18 [pid 701] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 701] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 701] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 701] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 701] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 701] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 701] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[702]}, 88) = 702 [pid 701] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 701] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 701] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 702 attached [pid 702] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 702] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 702] creat("./bus", 000) = 3 [pid 702] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] <... futex resumed>) = 0 [pid 701] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 701] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 701] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 701] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 701] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 701] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[703]}, 88) = 703 [pid 701] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 701] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 701] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 702] <... futex resumed>) = 1 [pid 702] memfd_create("syzkaller", 0) = 4 [pid 702] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 703 attached [pid 702] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 703] set_robust_list(0x7ff437a2d9a0, 24 [pid 702] <... write resumed>) = 262144 [pid 703] <... set_robust_list resumed>) = 0 [pid 702] munmap(0x7ff42f60d000, 138412032 [pid 703] rt_sigprocmask(SIG_SETMASK, [], [pid 702] <... munmap resumed>) = 0 [pid 703] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 702] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 703] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 702] <... openat resumed>) = 5 [pid 703] <... mount resumed>) = 0 [pid 702] ioctl(5, LOOP_SET_FD, 4 [pid 703] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 701] <... futex resumed>) = 0 [pid 701] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 702] <... ioctl resumed>) = 0 [pid 701] <... futex resumed>) = 1 [pid 701] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... futex resumed>) = 0 [pid 703] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 703] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 701] <... futex resumed>) = 0 [pid 703] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 701] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 701] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 702] close(4) = 0 [pid 702] close(5) = 0 [pid 702] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 703] <... mmap resumed>) = 0x400000000000 [pid 702] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 703] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 702] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 701] <... futex resumed>) = 0 [pid 701] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 701] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 703] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 702] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 703] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 701] <... futex resumed>) = 0 [pid 702] <... openat resumed>) = 5 [pid 703] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] ioctl(5, LOOP_CLR_FD) = 0 [pid 702] close(5) = 0 [pid 702] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] exit_group(0) = ? [pid 703] <... futex resumed>) = ? [pid 703] +++ exited with 0 +++ [pid 702] <... futex resumed>) = ? [ 33.268715][ T702] loop0: detected capacity change from 0 to 512 [pid 702] +++ exited with 0 +++ [pid 701] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=701, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 704 ./strace-static-x86_64: Process 704 attached [pid 704] set_robust_list(0x5555900c96a0, 24) = 0 [pid 704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 704] setpgid(0, 0) = 0 [pid 704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 704] write(3, "1000", 4) = 4 [pid 704] close(3) = 0 [pid 704] write(1, "executing program\n", 18executing program ) = 18 [pid 704] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 704] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 704] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 704] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 705 attached => {parent_tid=[705]}, 88) = 705 [pid 705] set_robust_list(0x7ff437a4e9a0, 24 [pid 704] rt_sigprocmask(SIG_SETMASK, [], [pid 705] <... set_robust_list resumed>) = 0 [pid 704] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 704] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 705] creat("./bus", 000 [pid 704] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 705] <... creat resumed>) = 3 [pid 705] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 705] memfd_create("syzkaller", 0 [pid 704] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 705] <... memfd_create resumed>) = 4 [pid 704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 704] <... mmap resumed>) = 0x7ff437a0d000 [pid 704] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE [pid 705] <... mmap resumed>) = 0x7ff42f60d000 [pid 704] <... mprotect resumed>) = 0 [pid 704] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[706]}, 88) = 706 [pid 704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 704] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 706 attached [pid 705] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 706] set_robust_list(0x7ff437a2d9a0, 24 [pid 705] <... write resumed>) = 262144 [pid 706] <... set_robust_list resumed>) = 0 [pid 705] munmap(0x7ff42f60d000, 138412032 [pid 706] rt_sigprocmask(SIG_SETMASK, [], [pid 705] <... munmap resumed>) = 0 [pid 706] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 705] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 706] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 705] <... openat resumed>) = 5 [pid 705] ioctl(5, LOOP_SET_FD, 4 [pid 706] <... mount resumed>) = 0 [pid 706] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 706] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 704] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 706] <... futex resumed>) = 0 [pid 706] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 705] <... ioctl resumed>) = 0 [pid 706] <... open resumed>) = 6 [pid 706] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] close(4) = 0 [pid 705] close(5) = 0 [pid 706] <... futex resumed>) = 1 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 706] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 705] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 705] ioctl(4, LOOP_CLR_FD) = 0 [pid 705] close(4) = 0 [pid 705] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 706] <... futex resumed>) = 1 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 706] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 705] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 705] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 704] <... futex resumed>) = 0 [pid 704] exit_group(0) = ? [pid 706] <... futex resumed>) = ? [pid 706] +++ exited with 0 +++ [ 33.358627][ T705] loop0: detected capacity change from 0 to 512 [pid 705] +++ exited with 0 +++ [pid 704] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=704, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 708 ./strace-static-x86_64: Process 708 attached [pid 708] set_robust_list(0x5555900c96a0, 24) = 0 [pid 708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 708] setpgid(0, 0) = 0 [pid 708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 708] write(3, "1000", 4) = 4 [pid 708] close(3) = 0 [pid 708] write(1, "executing program\n", 18executing program ) = 18 [pid 708] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 708] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 708] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 708] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 708] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[709]}, 88) = 709 [pid 708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 708] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 709 attached [pid 709] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 709] creat("./bus", 000) = 3 [pid 709] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] <... futex resumed>) = 0 [pid 708] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 708] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 708] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 708] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[710]}, 88) = 710 [pid 708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 708] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] <... futex resumed>) = 1 [pid 709] memfd_create("syzkaller", 0) = 4 [pid 709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 710 attached ) = 0x7ff42f60d000 [pid 710] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 710] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 710] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] <... futex resumed>) = 0 [pid 708] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 710] <... futex resumed>) = 1 [pid 709] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 710] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 710] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] <... futex resumed>) = 0 [pid 708] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 710] <... futex resumed>) = 1 [pid 710] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 709] <... write resumed>) = 262144 [pid 710] <... mmap resumed>) = 0x400000000000 [pid 709] munmap(0x7ff42f60d000, 138412032 [pid 710] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] <... munmap resumed>) = 0 [pid 709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 709] ioctl(6, LOOP_SET_FD, 4 [pid 710] <... futex resumed>) = 1 [pid 708] <... futex resumed>) = 0 [pid 708] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 709] <... ioctl resumed>) = 0 [pid 709] close(4) = 0 [pid 709] close(6 [pid 710] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 709] <... close resumed>) = 0 [pid 709] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 709] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 709] ioctl(4, LOOP_CLR_FD) = 0 [pid 709] close(4) = 0 [pid 709] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 709] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 710] <... bpf resumed>) = 4 [pid 710] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 708] <... futex resumed>) = 0 [pid 708] exit_group(0 [pid 709] <... futex resumed>) = ? [pid 708] <... exit_group resumed>) = ? [pid 709] +++ exited with 0 +++ [pid 710] +++ exited with 0 +++ [pid 708] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=708, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 33.445828][ T709] loop0: detected capacity change from 0 to 512 [ 33.446468][ T710] blk_update_request: I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 32 prio class 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 711 ./strace-static-x86_64: Process 711 attached [pid 711] set_robust_list(0x5555900c96a0, 24) = 0 [pid 711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 711] setpgid(0, 0) = 0 [pid 711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 711] write(3, "1000", 4) = 4 [pid 711] close(3) = 0 [pid 711] write(1, "executing program\n", 18executing program ) = 18 [pid 711] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 711] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 711] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 711] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 711] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[712]}, 88) = 712 [pid 711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 711] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 712 attached [pid 712] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 712] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 712] creat("./bus", 000) = 3 [pid 712] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] <... futex resumed>) = 0 [pid 711] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 711] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 711] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 711] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[713]}, 88) = 713 [pid 711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 711] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] <... futex resumed>) = 1 [pid 712] memfd_create("syzkaller", 0) = 4 [pid 712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 712] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 712] munmap(0x7ff42f60d000, 138412032) = 0 [pid 712] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 712] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 713 attached [pid 713] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 713] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 713] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 713] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 713] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] <... futex resumed>) = 0 [pid 711] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 713] <... futex resumed>) = 0 [pid 713] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 712] <... ioctl resumed>) = 0 [pid 712] close(4) = 0 [pid 713] <... open resumed>) = 6 [pid 712] close(5) = 0 [pid 712] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 712] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 712] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 712] ioctl(4, LOOP_CLR_FD) = 0 [pid 712] close(4) = 0 [pid 712] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 712] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 713] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] <... futex resumed>) = 0 [pid 711] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] <... futex resumed>) = 0 [pid 712] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 713] <... futex resumed>) = 1 [pid 713] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 712] <... mmap resumed>) = 0x400000000000 [pid 712] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] <... futex resumed>) = 0 [pid 711] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 712] <... futex resumed>) = 1 [pid 712] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 712] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] <... futex resumed>) = 0 [pid 711] exit_group(0) = ? [pid 713] <... futex resumed>) = ? [pid 713] +++ exited with 0 +++ [pid 712] <... futex resumed>) = ? [pid 712] +++ exited with 0 +++ [pid 711] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=711, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 33.537370][ T712] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 714 ./strace-static-x86_64: Process 714 attached [pid 714] set_robust_list(0x5555900c96a0, 24) = 0 [pid 714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 714] setpgid(0, 0) = 0 [pid 714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 714] write(3, "1000", 4) = 4 [pid 714] close(3) = 0 [pid 714] write(1, "executing program\n", 18executing program ) = 18 [pid 714] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 714] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 714] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 714] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 714] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[715]}, 88) = 715 ./strace-static-x86_64: Process 715 attached [pid 714] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 714] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 715] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 715] creat("./bus", 000) = 3 [pid 715] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 714] <... futex resumed>) = 0 [pid 714] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 714] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 714] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 714] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[716]}, 88) = 716 [pid 715] memfd_create("syzkaller", 0 [pid 714] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 714] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 716 attached [pid 716] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 716] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 716] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 716] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] <... futex resumed>) = 0 [pid 714] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 716] <... futex resumed>) = 1 [pid 716] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 716] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] <... futex resumed>) = 0 [pid 714] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 716] <... futex resumed>) = 1 [pid 716] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 714] <... futex resumed>) = 0 [pid 714] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 716] <... futex resumed>) = 1 [pid 716] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 714] <... futex resumed>) = ? [pid 715] <... memfd_create resumed>) = ? [pid 715] +++ killed by SIGBUS +++ [pid 716] +++ killed by SIGBUS +++ [pid 714] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=714, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 717 ./strace-static-x86_64: Process 717 attached [pid 717] set_robust_list(0x5555900c96a0, 24) = 0 [pid 717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 717] setpgid(0, 0) = 0 [pid 717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 717] write(3, "1000", 4) = 4 [pid 717] close(3) = 0 [pid 717] write(1, "executing program\n", 18) = 18 [pid 717] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 717] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 717] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 717] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 717] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[718]}, 88) = 718 [pid 717] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 717] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 718 attached [pid 718] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 718] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 718] creat("./bus", 000) = 3 [pid 718] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] <... futex resumed>) = 0 [pid 717] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 718] <... futex resumed>) = 1 [pid 717] <... futex resumed>) = 0 [pid 717] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 717] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 717] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 717] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[719]}, 88) = 719 [pid 717] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 717] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 718] memfd_create("syzkaller", 0./strace-static-x86_64: Process 719 attached ) = 4 [pid 718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 719] set_robust_list(0x7ff437a2d9a0, 24 [pid 718] <... mmap resumed>) = 0x7ff42f60d000 [pid 719] <... set_robust_list resumed>) = 0 [pid 719] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 719] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 719] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 717] <... futex resumed>) = 0 [pid 717] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 718] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 719] <... open resumed>) = 5 [pid 719] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 717] <... futex resumed>) = 0 [pid 717] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 718] <... write resumed>) = 262144 [pid 719] <... futex resumed>) = 1 [pid 717] <... futex resumed>) = 0 [pid 718] munmap(0x7ff42f60d000, 138412032 [pid 717] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 719] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 718] <... munmap resumed>) = 0 [pid 717] <... futex resumed>) = ? [pid 718] +++ killed by SIGBUS +++ [pid 719] +++ killed by SIGBUS +++ [pid 717] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=717, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 720 ./strace-static-x86_64: Process 720 attached [pid 720] set_robust_list(0x5555900c96a0, 24) = 0 executing program [pid 720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 720] setpgid(0, 0) = 0 [pid 720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 720] write(3, "1000", 4) = 4 [pid 720] close(3) = 0 [pid 720] write(1, "executing program\n", 18) = 18 [pid 720] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 720] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 720] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 720] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 720] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[721]}, 88) = 721 [pid 720] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 720] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 721 attached [pid 721] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 721] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 721] creat("./bus", 000) = 3 [pid 721] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 720] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 720] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 720] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[722]}, 88) = 722 [pid 720] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 720] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] <... futex resumed>) = 1 [pid 721] memfd_create("syzkaller", 0) = 4 [pid 721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 722 attached [pid 722] set_robust_list(0x7ff437a2d9a0, 24 [pid 721] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 722] <... set_robust_list resumed>) = 0 [pid 722] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 722] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 722] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 722] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 721] <... write resumed>) = 262144 [pid 722] <... open resumed>) = 5 [pid 721] munmap(0x7ff42f60d000, 138412032) = 0 [pid 722] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 721] ioctl(6, LOOP_SET_FD, 4 [pid 722] <... futex resumed>) = 1 [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 722] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 721] <... ioctl resumed>) = 0 [pid 721] close(4) = 0 [pid 721] close(6) = 0 [pid 721] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 721] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 721] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 721] ioctl(4, LOOP_CLR_FD) = 0 [pid 721] close(4) = 0 [pid 721] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 722] <... mmap resumed>) = 0x400000000000 [pid 722] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 720] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 722] <... futex resumed>) = 1 [pid 721] <... futex resumed>) = 0 [pid 722] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 721] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 721] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] exit_group(0) = ? [pid 721] <... futex resumed>) = ? [pid 721] +++ exited with 0 +++ [pid 722] <... futex resumed>) = ? [pid 722] +++ exited with 0 +++ [pid 720] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=720, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 33.669243][ T721] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 723 ./strace-static-x86_64: Process 723 attached [pid 723] set_robust_list(0x5555900c96a0, 24) = 0 [pid 723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 723] setpgid(0, 0) = 0 [pid 723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 723] write(3, "1000", 4) = 4 [pid 723] close(3) = 0 [pid 723] write(1, "executing program\n", 18executing program ) = 18 [pid 723] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 723] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 723] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 723] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 723] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[724]}, 88) = 724 [pid 723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 723] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 724 attached [pid 724] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 724] creat("./bus", 000) = 3 [pid 724] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 723] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 723] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 723] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[725]}, 88) = 725 [pid 723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 723] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 724] <... futex resumed>) = 1 [pid 724] memfd_create("syzkaller", 0) = 4 [pid 724] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 724] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 725 attached [pid 725] set_robust_list(0x7ff437a2d9a0, 24 [pid 724] <... write resumed>) = 262144 [pid 725] <... set_robust_list resumed>) = 0 [pid 725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 725] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 724] munmap(0x7ff42f60d000, 138412032 [pid 725] <... mount resumed>) = 0 [pid 725] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] <... munmap resumed>) = 0 [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 725] <... futex resumed>) = 1 [pid 725] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 725] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 725] <... futex resumed>) = 1 [pid 725] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 724] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 725] <... mmap resumed>) = 0x400000000000 [pid 725] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 725] <... futex resumed>) = 1 [pid 725] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 723] <... futex resumed>) = ? [pid 724] <... openat resumed>) = ? [pid 724] +++ killed by SIGBUS +++ [pid 725] +++ killed by SIGBUS +++ [pid 723] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=723, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 726 ./strace-static-x86_64: Process 726 attached [pid 726] set_robust_list(0x5555900c96a0, 24) = 0 [pid 726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 726] setpgid(0, 0) = 0 [pid 726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 726] write(3, "1000", 4) = 4 [pid 726] close(3executing program ) = 0 [pid 726] write(1, "executing program\n", 18) = 18 [pid 726] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 726] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 726] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 726] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 726] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 726] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[727]}, 88) = 727 [pid 726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 726] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 726] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 727 attached [pid 727] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 727] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 727] creat("./bus", 000) = 3 [pid 727] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... futex resumed>) = 0 [pid 726] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 726] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 726] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 726] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 726] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[728]}, 88) = 728 [pid 726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 726] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 726] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 727] <... futex resumed>) = 1 [pid 727] memfd_create("syzkaller", 0) = 4 [pid 727] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 728 attached [pid 727] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 727] munmap(0x7ff42f60d000, 138412032) = 0 [pid 727] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 727] ioctl(5, LOOP_SET_FD, 4 [pid 728] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 728] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 728] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 728] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... futex resumed>) = 0 [pid 726] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 726] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 728] <... futex resumed>) = 1 [pid 728] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 727] <... ioctl resumed>) = 0 [pid 728] <... open resumed>) = 6 [pid 727] close(4) = 0 [pid 727] close(5 [pid 728] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] <... close resumed>) = 0 [pid 728] <... futex resumed>) = 1 [pid 728] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 727] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 727] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 727] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 727] ioctl(4, LOOP_CLR_FD) = 0 [pid 727] close(4 [pid 726] <... futex resumed>) = 0 [pid 726] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 726] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 727] <... close resumed>) = 0 [pid 727] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 727] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 728] <... futex resumed>) = 0 [pid 728] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 728] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 726] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] <... futex resumed>) = 0 [pid 726] <... futex resumed>) = 1 [pid 726] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 727] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 727] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 727] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 726] <... futex resumed>) = 0 [pid 726] exit_group(0) = ? [pid 728] <... futex resumed>) = ? [pid 727] <... futex resumed>) = ? [pid 728] +++ exited with 0 +++ [pid 727] +++ exited with 0 +++ [pid 726] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=726, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 729 attached , child_tidptr=0x5555900c9690) = 729 [pid 729] set_robust_list(0x5555900c96a0, 24) = 0 [pid 729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 729] setpgid(0, 0) = 0 [pid 729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 729] write(3, "1000", 4) = 4 [pid 729] close(3) = 0 [pid 729] write(1, "executing program\n", 18executing program ) = 18 [pid 729] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 729] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 729] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 729] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 729] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 729] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 730 attached => {parent_tid=[730]}, 88) = 730 [pid 730] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 730] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 730] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 729] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 730] <... futex resumed>) = 0 [pid 730] creat("./bus", 000) = 3 [pid 729] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 730] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 729] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 730] <... futex resumed>) = 0 [pid 730] memfd_create("syzkaller", 0 [pid 729] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... memfd_create resumed>) = 4 [pid 730] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f62e000 [pid 729] <... futex resumed>) = 0 [pid 729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff42f60d000 [pid 729] mprotect(0x7ff42f60e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 729] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 729] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff42f62d990, parent_tid=0x7ff42f62d990, exit_signal=0, stack=0x7ff42f60d000, stack_size=0x20300, tls=0x7ff42f62d6c0} => {parent_tid=[731]}, 88) = 731 [pid 730] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 729] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 729] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 729] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 731 attached [pid 730] <... write resumed>) = 262144 [ 33.802837][ T727] loop0: detected capacity change from 0 to 512 [pid 730] munmap(0x7ff42f62e000, 138412032) = 0 [pid 730] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 730] ioctl(5, LOOP_SET_FD, 4) = 0 [pid 731] set_robust_list(0x7ff42f62d9a0, 24) = 0 [pid 731] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 731] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 730] close(4) = 0 [pid 731] <... mount resumed>) = 0 [pid 730] close(5 [pid 731] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 729] <... futex resumed>) = 0 [pid 729] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 729] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 731] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 4 [pid 731] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... futex resumed>) = 0 [pid 729] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 729] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 731] <... futex resumed>) = 1 [pid 731] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 730] <... close resumed>) = 0 [pid 730] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 730] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 730] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 730] ioctl(5, LOOP_CLR_FD) = 0 [pid 730] close(5 [pid 731] <... mmap resumed>) = 0x400000000000 [pid 731] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... close resumed>) = 0 [pid 730] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 731] <... futex resumed>) = 1 [pid 729] <... futex resumed>) = 0 [pid 729] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... futex resumed>) = 0 [pid 731] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] <... futex resumed>) = 0 [pid 730] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 729] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 730] <... bpf resumed>) = 5 [pid 730] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 729] <... futex resumed>) = 0 [pid 729] exit_group(0 [pid 730] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] <... exit_group resumed>) = ? [pid 730] <... futex resumed>) = ? [pid 730] +++ exited with 0 +++ [pid 731] <... futex resumed>) = ? [pid 731] +++ exited with 0 +++ [pid 729] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=729, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 732 ./strace-static-x86_64: Process 732 attached [ 33.854754][ T730] loop0: detected capacity change from 0 to 512 [pid 732] set_robust_list(0x5555900c96a0, 24) = 0 [pid 732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 732] setpgid(0, 0) = 0 [pid 732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 732] write(3, "1000", 4) = 4 executing program [pid 732] close(3) = 0 [pid 732] write(1, "executing program\n", 18) = 18 [pid 732] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 732] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 732] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 732] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 732] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 733 attached => {parent_tid=[733]}, 88) = 733 [pid 733] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 733] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 733] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 732] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 732] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 732] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 733] <... futex resumed>) = 0 [pid 733] creat("./bus", 000) = 3 [pid 733] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 732] <... futex resumed>) = 0 [pid 732] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 732] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 732] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 732] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[734]}, 88) = 734 [pid 733] memfd_create("syzkaller", 0 [pid 732] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 732] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 734 attached [pid 734] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 734] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 734] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 733] <... memfd_create resumed>) = 4 [pid 734] <... mount resumed>) = 0 [pid 733] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 734] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 732] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] <... futex resumed>) = 1 [pid 734] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 733] <... mmap resumed>) = 0x7ff42f60d000 [pid 734] <... open resumed>) = 5 [pid 734] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 732] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] <... futex resumed>) = 1 [pid 734] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 732] <... futex resumed>) = ? [pid 734] <... futex resumed>) = ? [pid 734] +++ killed by SIGBUS +++ [pid 733] +++ killed by SIGBUS +++ [pid 732] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=732, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 735 ./strace-static-x86_64: Process 735 attached [pid 735] set_robust_list(0x5555900c96a0, 24) = 0 [pid 735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 735] setpgid(0, 0) = 0 [pid 735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 735] write(3, "1000", 4) = 4 [pid 735] close(3) = 0 [pid 735] write(1, "executing program\n", 18executing program ) = 18 [pid 735] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 735] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 735] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 735] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 735] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 736 attached => {parent_tid=[736]}, 88) = 736 [pid 736] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 736] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 736] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 735] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 735] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 736] <... futex resumed>) = 0 [pid 735] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] creat("./bus", 000) = 3 [pid 736] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 735] <... futex resumed>) = 0 [pid 735] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 735] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 735] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 735] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[737]}, 88) = 737 [pid 735] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 735] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 737 attached [pid 737] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 737] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 737] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 737] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] memfd_create("syzkaller", 0 [pid 735] <... futex resumed>) = 0 [pid 735] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 737] <... futex resumed>) = 1 [pid 737] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 736] <... memfd_create resumed>) = 5 [pid 737] <... open resumed>) = 4 [pid 737] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... futex resumed>) = 0 [pid 735] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 737] <... futex resumed>) = 1 [pid 737] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 737] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... futex resumed>) = 0 [pid 735] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 737] <... futex resumed>) = 1 [pid 737] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 735] <... futex resumed>) = ? [pid 736] <... mmap resumed>) = ? [pid 736] +++ killed by SIGBUS +++ [pid 737] +++ killed by SIGBUS +++ [pid 735] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=735, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) executing program close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 738 ./strace-static-x86_64: Process 738 attached [pid 738] set_robust_list(0x5555900c96a0, 24) = 0 [pid 738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 738] setpgid(0, 0) = 0 [pid 738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 738] write(3, "1000", 4) = 4 [pid 738] close(3) = 0 [pid 738] write(1, "executing program\n", 18) = 18 [pid 738] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 738] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 738] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 738] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 738] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[739]}, 88) = 739 [pid 738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 738] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 739 attached [pid 739] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 739] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 739] creat("./bus", 000) = 3 [pid 739] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 739] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 738] <... futex resumed>) = 0 [pid 738] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 738] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 738] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 738] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 738] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 740 attached => {parent_tid=[740]}, 88) = 740 [pid 738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 738] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 739] <... futex resumed>) = 0 [pid 740] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 740] rt_sigprocmask(SIG_SETMASK, [], [pid 739] memfd_create("syzkaller", 0 [pid 740] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 740] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 740] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 738] <... futex resumed>) = 0 [pid 740] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 738] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... memfd_create resumed>) = 4 [pid 738] <... futex resumed>) = 1 [pid 740] <... futex resumed>) = 0 [pid 739] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 738] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 740] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 739] <... mmap resumed>) = 0x7ff42f60d000 [pid 740] <... open resumed>) = 5 [pid 740] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 738] <... futex resumed>) = 0 [pid 740] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 738] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 740] <... mmap resumed>) = 0x400000000000 [pid 740] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 739] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000001170} --- [pid 738] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... futex resumed>) = ? [pid 738] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 740] +++ killed by SIGBUS +++ [pid 739] +++ killed by SIGBUS +++ [pid 738] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=738, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 741 ./strace-static-x86_64: Process 741 attached [pid 741] set_robust_list(0x5555900c96a0, 24) = 0 [pid 741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 741] setpgid(0, 0) = 0 [pid 741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 741] write(3, "1000", 4) = 4 [pid 741] close(3) = 0 [pid 741] write(1, "executing program\n", 18) = 18 [pid 741] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 741] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 741] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 741] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 741] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[742]}, 88) = 742 [pid 741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 741] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 742 attached [pid 742] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 742] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 742] creat("./bus", 000) = 3 [pid 742] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] <... futex resumed>) = 0 [pid 741] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 741] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 741] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 741] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[743]}, 88) = 743 [pid 741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 741] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] <... futex resumed>) = 1 [pid 742] memfd_create("syzkaller", 0) = 4 [pid 742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 743 attached [pid 743] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 743] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 743] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 743] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 741] <... futex resumed>) = 0 [pid 741] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 743] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 742] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 743] <... open resumed>) = 5 [pid 743] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 741] <... futex resumed>) = 0 [pid 741] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 743] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 741] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 743] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 742] <... write resumed>) = ? [pid 741] <... futex resumed>) = ? [pid 742] +++ killed by SIGBUS +++ [pid 743] +++ killed by SIGBUS +++ [pid 741] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=741, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 744 ./strace-static-x86_64: Process 744 attached [pid 744] set_robust_list(0x5555900c96a0, 24) = 0 [pid 744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 744] setpgid(0, 0) = 0 [pid 744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 744] write(3, "1000", 4) = 4 [pid 744] close(3) = 0 [pid 744] write(1, "executing program\n", 18executing program ) = 18 [pid 744] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 744] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 744] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 744] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 744] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 745 attached => {parent_tid=[745]}, 88) = 745 [pid 745] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 745] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 745] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 744] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 745] <... futex resumed>) = 0 [pid 745] creat("./bus", 000) = 3 [pid 744] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 745] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 744] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 745] <... futex resumed>) = 0 [pid 745] memfd_create("syzkaller", 0 [pid 744] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... memfd_create resumed>) = 4 [pid 744] <... futex resumed>) = 0 [pid 744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 744] <... mmap resumed>) = 0x7ff437a0d000 [pid 744] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 744] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 744] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[746]}, 88) = 746 [pid 744] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 744] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 746 attached [pid 746] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 746] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 746] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = 0 [pid 744] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 746] <... futex resumed>) = 1 [pid 746] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 746] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = 0 [pid 744] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 746] <... futex resumed>) = 1 [pid 746] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 744] <... futex resumed>) = ? [pid 746] <... futex resumed>) = ? [pid 746] +++ killed by SIGBUS +++ [pid 745] +++ killed by SIGBUS +++ [pid 744] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=744, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 747 ./strace-static-x86_64: Process 747 attached [pid 747] set_robust_list(0x5555900c96a0, 24) = 0 [pid 747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 747] setpgid(0, 0) = 0 [pid 747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 747] write(3, "1000", 4executing program ) = 4 [pid 747] close(3) = 0 [pid 747] write(1, "executing program\n", 18) = 18 [pid 747] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 747] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 747] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 747] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 747] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 747] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[748]}, 88) = 748 [pid 747] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 747] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 748 attached [pid 748] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 748] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 748] creat("./bus", 000) = 3 [pid 748] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = 0 [pid 747] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 747] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 747] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 747] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[749]}, 88) = 749 [pid 747] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 747] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] <... futex resumed>) = 1 [pid 748] memfd_create("syzkaller", 0) = 4 [pid 748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 748] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 748] munmap(0x7ff42f60d000, 138412032) = 0 [pid 748] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 748] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 749 attached [pid 749] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 749] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 749] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 749] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = 0 [pid 747] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 749] <... futex resumed>) = 1 [pid 749] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 748] <... ioctl resumed>) = 0 [pid 749] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] close(4 [pid 749] <... futex resumed>) = 1 [pid 748] <... close resumed>) = 0 [pid 747] <... futex resumed>) = 0 [pid 748] close(5 [pid 749] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 747] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] <... close resumed>) = 0 [pid 748] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 748] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 748] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 748] ioctl(4, LOOP_CLR_FD) = 0 [pid 748] close(4) = 0 [pid 748] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = 0 [pid 748] <... futex resumed>) = 0 [pid 747] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] <... mmap resumed>) = 0x400000000000 [pid 749] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 747] <... futex resumed>) = 0 [pid 747] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 747] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 748] <... futex resumed>) = 0 [pid 748] bpf(BPF_PROG_LOAD, 0x400000000680, 128 [pid 749] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 748] <... bpf resumed>) = 4 [pid 748] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 747] <... futex resumed>) = 0 [pid 747] exit_group(0) = ? [pid 749] <... futex resumed>) = ? [pid 749] +++ exited with 0 +++ [pid 748] +++ exited with 0 +++ [pid 747] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=747, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 34.023992][ T748] loop0: detected capacity change from 0 to 512 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 750 ./strace-static-x86_64: Process 750 attached [pid 750] set_robust_list(0x5555900c96a0, 24) = 0 [pid 750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 750] setpgid(0, 0) = 0 [pid 750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 750] write(3, "1000", 4) = 4 [pid 750] close(3) = 0 [pid 750] write(1, "executing program\n", 18executing program ) = 18 [pid 750] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 750] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 750] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 750] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 750] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 750] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 751 attached => {parent_tid=[751]}, 88) = 751 [pid 751] set_robust_list(0x7ff437a4e9a0, 24 [pid 750] rt_sigprocmask(SIG_SETMASK, [], [pid 751] <... set_robust_list resumed>) = 0 [pid 750] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 751] rt_sigprocmask(SIG_SETMASK, [], [pid 750] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 750] <... futex resumed>) = 0 [pid 751] creat("./bus", 000 [pid 750] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 751] <... creat resumed>) = 3 [pid 751] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 750] <... futex resumed>) = 0 [pid 750] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 750] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 751] memfd_create("syzkaller", 0 [pid 750] <... mmap resumed>) = 0x7ff437a0d000 [pid 751] <... memfd_create resumed>) = 4 [pid 751] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 750] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 750] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 750] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 751] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 752 attached [pid 750] <... clone3 resumed> => {parent_tid=[752]}, 88) = 752 [pid 752] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 752] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 752] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 750] rt_sigprocmask(SIG_SETMASK, [], [pid 751] <... write resumed>) = 262144 [pid 750] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 750] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 752] <... futex resumed>) = 0 [pid 752] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 751] munmap(0x7ff42f60d000, 138412032 [pid 750] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 752] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] <... munmap resumed>) = 0 [pid 751] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 751] <... openat resumed>) = 5 [pid 751] ioctl(5, LOOP_SET_FD, 4 [pid 750] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 752] <... futex resumed>) = 0 [pid 752] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 750] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 751] <... ioctl resumed>) = 0 [pid 752] <... open resumed>) = 6 [pid 752] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] <... futex resumed>) = 0 [pid 750] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... futex resumed>) = 1 [pid 751] close(4 [pid 750] <... futex resumed>) = 0 [pid 752] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 751] <... close resumed>) = 0 [pid 750] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 751] close(5 [pid 752] <... mmap resumed>) = 0x400000000000 [pid 751] <... close resumed>) = 0 [pid 752] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] <... futex resumed>) = 0 [pid 750] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 750] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 752] <... futex resumed>) = 1 [pid 752] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 751] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 752] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "" [pid 752] <... futex resumed>) = 1 [pid 752] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 751] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 751] ioctl(5, LOOP_CLR_FD) = 0 [pid 751] close(5) = 0 [pid 751] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 751] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 750] <... futex resumed>) = 0 [pid 750] exit_group(0) = ? [pid 752] <... futex resumed>) = ? [pid 752] +++ exited with 0 +++ [pid 751] <... futex resumed>) = ? [ 34.100738][ T751] loop0: detected capacity change from 0 to 512 [pid 751] +++ exited with 0 +++ [pid 750] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=750, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 753 ./strace-static-x86_64: Process 753 attached [pid 753] set_robust_list(0x5555900c96a0, 24) = 0 [pid 753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 753] setpgid(0, 0) = 0 [pid 753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 753] write(3, "1000", 4) = 4 [pid 753] close(3) = 0 [pid 753] write(1, "executing program\n", 18executing program ) = 18 [pid 753] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 753] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 753] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 753] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 753] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 753] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[754]}, 88) = 754 [pid 753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 753] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 754 attached [pid 754] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 754] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 754] creat("./bus", 000) = 3 [pid 754] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = 0 [pid 753] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 753] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 753] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 753] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[755]}, 88) = 755 [pid 753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 753] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] <... futex resumed>) = 1 [pid 754] memfd_create("syzkaller", 0) = 4 [pid 754] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 755 attached [pid 754] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 755] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 755] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 755] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 755] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 754] <... write resumed>) = 262144 [pid 753] <... futex resumed>) = 0 [pid 753] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] munmap(0x7ff42f60d000, 138412032 [pid 755] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 754] <... munmap resumed>) = 0 [pid 755] <... open resumed>) = 5 [pid 754] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 755] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = 0 [pid 753] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 755] <... futex resumed>) = 1 [pid 755] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 753] <... futex resumed>) = 0 [pid 753] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 755] <... futex resumed>) = 1 [pid 755] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 753] <... futex resumed>) = ? [pid 754] <... openat resumed>) = ? [pid 754] +++ killed by SIGBUS +++ [pid 755] +++ killed by SIGBUS +++ [pid 753] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=753, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 756 ./strace-static-x86_64: Process 756 attached [pid 756] set_robust_list(0x5555900c96a0, 24) = 0 [pid 756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 756] setpgid(0, 0) = 0 [pid 756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 756] write(3, "1000", 4executing program ) = 4 [pid 756] close(3) = 0 [pid 756] write(1, "executing program\n", 18) = 18 [pid 756] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 756] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 756] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 756] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 756] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[757]}, 88) = 757 [pid 756] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 756] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 757 attached [pid 757] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 757] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 757] creat("./bus", 000) = 3 [pid 757] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] <... futex resumed>) = 0 [pid 756] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 756] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 756] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 756] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[758]}, 88) = 758 [pid 756] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 756] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 757] <... futex resumed>) = 1 [pid 757] memfd_create("syzkaller", 0) = 4 [pid 757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 757] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 757] munmap(0x7ff42f60d000, 138412032) = 0 [pid 757] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 757] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 758 attached [pid 758] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 758] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 758] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 758] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] <... futex resumed>) = 0 [pid 756] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 758] <... futex resumed>) = 1 [pid 758] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 757] <... ioctl resumed>) = 0 [pid 757] close(4) = 0 [pid 757] close(5 [pid 758] <... open resumed>) = 6 [pid 758] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 756] <... futex resumed>) = 0 [pid 758] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 756] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 756] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 757] <... close resumed>) = 0 [pid 757] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 757] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 757] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 757] ioctl(4, LOOP_CLR_FD) = 0 [pid 757] close(4) = 0 [pid 757] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 757] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] <... mmap resumed>) = 0x400000000000 [pid 758] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 756] <... futex resumed>) = 0 [pid 758] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 757] <... futex resumed>) = 0 [pid 756] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 757] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 757] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 756] <... futex resumed>) = 0 [pid 756] exit_group(0 [pid 758] <... futex resumed>) = 231 [pid 756] <... exit_group resumed>) = ? [pid 758] +++ exited with 0 +++ [pid 757] +++ exited with 0 +++ [pid 756] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=756, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 759 ./strace-static-x86_64: Process 759 attached [pid 759] set_robust_list(0x5555900c96a0, 24) = 0 [pid 759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 759] setpgid(0, 0) = 0 [pid 759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 759] write(3, "1000", 4) = 4 [pid 759] close(3) = 0 [pid 759] write(1, "executing program\n", 18executing program ) = 18 [pid 759] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 759] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 759] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 759] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 759] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 759] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 759] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[760]}, 88) = 760 [pid 759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 759] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 759] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 760 attached [pid 760] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 760] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 760] creat("./bus", 000) = 3 [pid 760] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] <... futex resumed>) = 0 [pid 759] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 759] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 759] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 759] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 759] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 759] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[761]}, 88) = 761 [pid 759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 759] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 759] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 760] <... futex resumed>) = 1 [pid 760] memfd_create("syzkaller", 0) = 4 [pid 760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 761 attached [pid 761] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 761] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 761] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 761] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 759] <... futex resumed>) = 0 [pid 761] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 759] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 759] <... futex resumed>) = 0 [pid 759] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... open resumed>) = 5 [pid 761] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 759] <... futex resumed>) = 0 [pid 759] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 761] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 759] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... mmap resumed>) = 0x400000000000 [pid 761] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 759] <... futex resumed>) = 0 [pid 759] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 759] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 760] <... write resumed>) = 262144 [pid 760] munmap(0x7ff42f60d000, 138412032 [pid 761] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 760] <... munmap resumed>) = 0 [pid 760] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 759] <... futex resumed>) = ? [pid 760] <... openat resumed>) = ? [pid 760] +++ killed by SIGBUS +++ [pid 761] +++ killed by SIGBUS +++ [pid 759] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=759, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 [ 34.202695][ T757] loop0: detected capacity change from 0 to 512 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 762 attached , child_tidptr=0x5555900c9690) = 762 [pid 762] set_robust_list(0x5555900c96a0, 24) = 0 [pid 762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 762] setpgid(0, 0) = 0 [pid 762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 762] write(3, "1000", 4) = 4 [pid 762] close(3) = 0 [pid 762] write(1, "executing program\n", 18executing program ) = 18 [pid 762] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 762] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 762] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 762] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 762] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0}./strace-static-x86_64: Process 763 attached [pid 763] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 763] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 763] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] <... clone3 resumed> => {parent_tid=[763]}, 88) = 763 [pid 762] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 762] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 763] <... futex resumed>) = 0 [pid 762] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] creat("./bus", 000) = 3 [pid 763] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 762] <... futex resumed>) = 0 [pid 762] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 762] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 763] memfd_create("syzkaller", 0 [pid 762] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 762] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0}./strace-static-x86_64: Process 764 attached [pid 763] <... memfd_create resumed>) = 4 [pid 762] <... clone3 resumed> => {parent_tid=[764]}, 88) = 764 [pid 762] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 762] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 764] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 763] <... mmap resumed>) = 0x7ff42f60d000 [pid 764] rt_sigprocmask(SIG_SETMASK, [], [pid 763] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 764] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 763] <... write resumed>) = 262144 [pid 764] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 763] munmap(0x7ff42f60d000, 138412032 [pid 764] <... mount resumed>) = 0 [pid 763] <... munmap resumed>) = 0 [pid 764] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 764] <... futex resumed>) = 1 [pid 763] <... openat resumed>) = 5 [pid 762] <... futex resumed>) = 0 [pid 762] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 764] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000 [pid 763] ioctl(5, LOOP_SET_FD, 4 [pid 764] <... open resumed>) = 6 [pid 763] <... ioctl resumed>) = 0 [pid 764] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 762] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 764] <... futex resumed>) = 1 [pid 764] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 763] close(4) = 0 [pid 763] close(5 [pid 764] <... mmap resumed>) = 0x400000000000 [pid 764] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 762] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 762] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 764] <... futex resumed>) = 1 [pid 764] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 764] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 764] <... futex resumed>) = 1 [pid 764] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 763] <... close resumed>) = 0 [pid 763] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 763] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 763] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 763] ioctl(5, LOOP_CLR_FD) = 0 [pid 763] close(5) = 0 [pid 763] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 763] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] exit_group(0) = ? [pid 764] <... futex resumed>) = ? [pid 764] +++ exited with 0 +++ [pid 763] <... futex resumed>) = ? [pid 763] +++ exited with 0 +++ [pid 762] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=762, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [ 34.278514][ T763] loop0: detected capacity change from 0 to 512 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 765 ./strace-static-x86_64: Process 765 attached [pid 765] set_robust_list(0x5555900c96a0, 24) = 0 [pid 765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 765] setpgid(0, 0) = 0 [pid 765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 765] write(3, "1000", 4) = 4 [pid 765] close(3) = 0 [pid 765] write(1, "executing program\n", 18executing program ) = 18 [pid 765] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 765] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 765] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 765] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[766]}, 88) = 766 [pid 765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 765] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 766 attached [pid 766] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 766] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 766] creat("./bus", 000) = 3 [pid 766] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 765] <... futex resumed>) = 0 [pid 765] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 765] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE [pid 766] memfd_create("syzkaller", 0 [pid 765] <... mprotect resumed>) = 0 [pid 766] <... memfd_create resumed>) = 4 [pid 766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 765] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[767]}, 88) = 767 [pid 765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 765] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 767 attached [pid 767] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 767] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 767] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 766] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 767] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] <... futex resumed>) = 0 [pid 765] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 767] <... futex resumed>) = 1 [pid 767] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 767] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] <... futex resumed>) = 0 [pid 765] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 767] <... futex resumed>) = 1 [pid 767] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 765] <... futex resumed>) = 0 [pid 765] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 765] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 767] <... futex resumed>) = 1 [pid 767] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 765] <... futex resumed>) = ? [pid 766] <... write resumed>) = ? [pid 767] +++ killed by SIGBUS +++ [pid 766] +++ killed by SIGBUS +++ [pid 765] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=765, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program , child_tidptr=0x5555900c9690) = 768 ./strace-static-x86_64: Process 768 attached [pid 768] set_robust_list(0x5555900c96a0, 24) = 0 [pid 768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 768] setpgid(0, 0) = 0 [pid 768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 768] write(3, "1000", 4) = 4 [pid 768] close(3) = 0 [pid 768] write(1, "executing program\n", 18) = 18 [pid 768] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 768] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 768] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 768] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 768] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 768] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 768] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[769]}, 88) = 769 [pid 768] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 768] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 769 attached ) = 0 [pid 769] set_robust_list(0x7ff437a4e9a0, 24 [pid 768] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] <... set_robust_list resumed>) = 0 [pid 769] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 769] creat("./bus", 000) = 3 [pid 769] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 768] <... futex resumed>) = 0 [pid 769] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 768] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 768] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 768] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 768] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE [pid 769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 768] <... mprotect resumed>) = 0 [pid 768] rt_sigprocmask(SIG_BLOCK, ~[], [pid 769] memfd_create("syzkaller", 0 [pid 768] <... rt_sigprocmask resumed>[], 8) = 0 [pid 768] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} [pid 769] <... memfd_create resumed>) = 4 [pid 768] <... clone3 resumed> => {parent_tid=[770]}, 88) = 770 [pid 769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 768] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 768] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 768] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 770 attached [pid 770] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 770] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 770] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 769] <... mmap resumed>) = 0x7ff42f60d000 [pid 770] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... futex resumed>) = 0 [pid 768] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 768] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... futex resumed>) = 1 [pid 770] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 770] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... futex resumed>) = 0 [pid 768] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 768] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... futex resumed>) = 1 [pid 770] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 768] <... futex resumed>) = 0 [pid 768] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 768] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 770] <... futex resumed>) = 1 [pid 770] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x400000000680} --- [pid 768] <... futex resumed>) = ? [pid 770] +++ killed by SIGBUS +++ [pid 769] +++ killed by SIGBUS +++ [pid 768] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=768, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3executing program ) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 771 ./strace-static-x86_64: Process 771 attached [pid 771] set_robust_list(0x5555900c96a0, 24) = 0 [pid 771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 771] setpgid(0, 0) = 0 [pid 771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 771] write(3, "1000", 4) = 4 [pid 771] close(3) = 0 [pid 771] write(1, "executing program\n", 18) = 18 [pid 771] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 771] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 771] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 771] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 771] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 771] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[772]}, 88) = 772 [pid 771] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 771] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 772 attached [pid 772] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 772] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 772] creat("./bus", 000) = 3 [pid 772] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 771] <... futex resumed>) = 0 [pid 772] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 771] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 771] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 771] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 771] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 771] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[773]}, 88) = 773 [pid 771] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 771] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 772] <... futex resumed>) = 0 [pid 772] memfd_create("syzkaller", 0) = 4 [pid 772] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 ./strace-static-x86_64: Process 773 attached [pid 773] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 773] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 773] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 773] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 771] <... futex resumed>) = 0 [pid 772] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 773] <... futex resumed>) = 1 [pid 771] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 773] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 771] <... futex resumed>) = 0 [pid 771] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 772] <... write resumed>) = 262144 [pid 772] munmap(0x7ff42f60d000, 138412032) = 0 [pid 772] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 772] ioctl(6, LOOP_SET_FD, 4 [pid 773] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 772] <... ioctl resumed>) = 0 [pid 772] close(4) = 0 [pid 772] close(6) = 0 [pid 772] mkdir(0x400000000000, 0777 [pid 773] <... mmap resumed>) = 0x400000000000 [pid 772] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 773] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 773] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 772] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 772] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 772] ioctl(4, LOOP_CLR_FD) = 0 [pid 772] close(4) = 0 [pid 772] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 771] <... futex resumed>) = 0 [pid 771] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 771] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 772] <... futex resumed>) = 0 [pid 772] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 772] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 771] <... futex resumed>) = 0 [pid 771] exit_group(0) = ? [pid 772] +++ exited with 0 +++ [pid 773] <... futex resumed>) = ? [pid 773] +++ exited with 0 +++ [pid 771] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=771, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 775 ./strace-static-x86_64: Process 775 attached [pid 775] set_robust_list(0x5555900c96a0, 24) = 0 [pid 775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 775] setpgid(0, 0) = 0 [pid 775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 775] write(3, "1000", 4) = 4 [pid 775] close(3) = 0 [pid 775] write(1, "executing program\n", 18executing program ) = 18 [pid 775] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 775] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 775] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 775] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 775] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[776]}, 88) = 776 [pid 775] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 775] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 776 attached [pid 776] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 776] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 776] creat("./bus", 000) = 3 [pid 776] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... futex resumed>) = 0 [pid 775] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 775] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 775] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 775] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[777]}, 88) = 777 [pid 775] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 775] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] <... futex resumed>) = 1 [pid 776] memfd_create("syzkaller", 0) = 4 [pid 776] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff42f60d000 [pid 776] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 776] munmap(0x7ff42f60d000, 138412032) = 0 [pid 776] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [ 34.409151][ T772] loop0: detected capacity change from 0 to 512 [pid 776] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 777 attached [pid 777] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 777] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 777] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 777] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 777] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 775] <... futex resumed>) = 0 [pid 775] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 775] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 777] <... futex resumed>) = 0 [pid 777] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 776] <... ioctl resumed>) = 0 [pid 776] close(4) = 0 [pid 777] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] close(5 [pid 777] <... futex resumed>) = 1 [pid 776] <... close resumed>) = 0 [pid 775] <... futex resumed>) = 0 [pid 777] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 776] mkdir("./bus", 0777) = -1 EEXIST (File exists) [pid 776] mount("/dev/loop0", "./bus", "./bus", MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "errors=remount-ro,nodelalloc,debug_want_extra_isize=0x0000000000000032,inode_readahead_blks=0x000000"...) = -1 ENODEV (No such device) [pid 776] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 776] ioctl(4, LOOP_CLR_FD) = 0 [pid 776] close(4) = 0 [pid 776] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 776] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 775] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 775] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] <... futex resumed>) = 0 [pid 776] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 775] <... futex resumed>) = 0 [pid 775] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 776] <... futex resumed>) = 1 [pid 776] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 4 [pid 776] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... futex resumed>) = 0 [pid 775] exit_group(0) = ? [pid 777] <... futex resumed>) = ? [pid 777] +++ exited with 0 +++ [pid 776] <... futex resumed>) = ? [pid 776] +++ exited with 0 +++ [pid 775] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=775, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 34.453061][ T776] loop0: detected capacity change from 0 to 512 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 778 ./strace-static-x86_64: Process 778 attached [pid 778] set_robust_list(0x5555900c96a0, 24) = 0 [pid 778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 778] setpgid(0, 0) = 0 [pid 778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 778] write(3, "1000", 4) = 4 [pid 778] close(3) = 0 [pid 778] write(1, "executing program\n", 18executing program ) = 18 [pid 778] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 778] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 778] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 778] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 778] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[779]}, 88) = 779 ./strace-static-x86_64: Process 779 attached [pid 778] rt_sigprocmask(SIG_SETMASK, [], [pid 779] set_robust_list(0x7ff437a4e9a0, 24 [pid 778] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 779] <... set_robust_list resumed>) = 0 [pid 778] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] rt_sigprocmask(SIG_SETMASK, [], [pid 778] <... futex resumed>) = 0 [pid 779] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 778] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 779] creat("./bus", 000) = 3 [pid 779] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 778] <... futex resumed>) = 0 [pid 778] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 778] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 778] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 778] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[780]}, 88) = 780 [pid 778] rt_sigprocmask(SIG_SETMASK, [], [pid 779] memfd_create("syzkaller", 0 [pid 778] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 778] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 780 attached [pid 780] set_robust_list(0x7ff437a2d9a0, 24) = 0 [pid 780] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 780] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 779] <... memfd_create resumed>) = 4 [pid 779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 780] <... mount resumed>) = 0 [pid 779] <... mmap resumed>) = 0x7ff42f60d000 [pid 780] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 780] futex(0x7ff437b196d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] <... futex resumed>) = 0 [pid 778] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 780] <... futex resumed>) = 0 [pid 778] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 780] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 5 [pid 780] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 778] <... futex resumed>) = 0 [pid 778] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 780] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<) = 0 [pid 778] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 779] +++ killed by SIGBUS +++ [pid 780] +++ killed by SIGBUS +++ [pid 778] +++ killed by SIGBUS +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=778, si_uid=0, si_status=SIGBUS, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555900c9690) = 781 ./strace-static-x86_64: Process 781 attached [pid 781] set_robust_list(0x5555900c96a0, 24) = 0 [pid 781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 781] setpgid(0, 0) = 0 [pid 781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 781] write(3, "1000", 4) = 4 [pid 781] close(3) = 0 [pid 781] write(1, "executing program\n", 18executing program ) = 18 [pid 781] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] rt_sigaction(SIGRT_1, {sa_handler=0x7ff437ab78f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff437aa8fa0}, NULL, 8) = 0 [pid 781] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 781] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a2e000 [pid 781] mprotect(0x7ff437a2f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 781] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 781] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a4e990, parent_tid=0x7ff437a4e990, exit_signal=0, stack=0x7ff437a2e000, stack_size=0x20300, tls=0x7ff437a4e6c0} => {parent_tid=[782]}, 88) = 782 [pid 781] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 781] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7ff437b196cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 782 attached [pid 782] set_robust_list(0x7ff437a4e9a0, 24) = 0 [pid 782] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 782] creat("./bus", 000) = 3 [pid 782] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 781] <... futex resumed>) = 0 [pid 782] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 781] futex(0x7ff437b196c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff437a0d000 [pid 781] mprotect(0x7ff437a0e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 781] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 781] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff437a2d990, parent_tid=0x7ff437a2d990, exit_signal=0, stack=0x7ff437a0d000, stack_size=0x20300, tls=0x7ff437a2d6c0} => {parent_tid=[783]}, 88) = 783 [pid 781] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 781] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 783 attached [pid 782] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 782] memfd_create("syzkaller", 0 [pid 783] set_robust_list(0x7ff437a2d9a0, 24 [pid 782] <... memfd_create resumed>) = 4 [pid 783] <... set_robust_list resumed>) = 0 [pid 782] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 783] rt_sigprocmask(SIG_SETMASK, [], [pid 782] <... mmap resumed>) = 0x7ff42f60d000 [pid 783] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 782] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 783] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 782] <... write resumed>) = 262144 [pid 782] munmap(0x7ff42f60d000, 138412032) = 0 [pid 782] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 783] <... mount resumed>) = 0 [pid 783] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] <... openat resumed>) = 5 [pid 782] ioctl(5, LOOP_SET_FD, 4 [pid 783] <... futex resumed>) = 1 [pid 782] <... ioctl resumed>) = 0 [pid 781] <... futex resumed>) = 0 [pid 781] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_DIRECT|O_NOATIME|FASYNC, 000) = 6 [pid 783] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] <... futex resumed>) = 0 [pid 781] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... futex resumed>) = 1 [pid 783] mmap(0x400000000000, 6291456, PROT_WRITE|PROT_GROWSUP|0x8088e3ad102bc190, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 782] close(4) = 0 [pid 782] close(5) = 0 [pid 782] mkdir(0x400000000000, 0777) = -1 ENOENT (No such file or directory) [pid 782] mount("/dev/loop0", 0x400000000000, 0x400000000040, MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_NOSYMFOLLOW|MS_LAZYTIME, "") = -1 ENOENT (No such file or directory) [pid 783] <... mmap resumed>) = 0x400000000000 [pid 782] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 783] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] <... openat resumed>) = 4 [pid 781] <... futex resumed>) = 0 [pid 781] futex(0x7ff437b196d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7ff437b196dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 783] <... futex resumed>) = 1 [pid 783] bpf(BPF_PROG_LOAD, 0x400000000680, 128) = 5 [pid 782] ioctl(4, LOOP_CLR_FD [pid 783] futex(0x7ff437b196dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] <... ioctl resumed>) = 0 [pid 782] close(4) = 0 [pid 782] futex(0x7ff437b196cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 782] futex(0x7ff437b196c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 781] <... futex resumed>) = 0 [pid 781] exit_group(0) = ? [pid 782] <... futex resumed>) = ? [pid 782] +++ exited with 0 +++ [pid 783] <... futex resumed>) = ? [pid 783] +++ exited with 0 +++ [pid 781] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=781, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0