./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2289700591 <...> Warning: Permanently added '10.128.0.164' (ED25519) to the list of known hosts. execve("./syz-executor2289700591", ["./syz-executor2289700591"], 0x7ffe5119b990 /* 10 vars */) = 0 brk(NULL) = 0x555591203000 brk(0x555591203e00) = 0x555591203e00 arch_prctl(ARCH_SET_FS, 0x555591203480) = 0 set_tid_address(0x555591203750) = 5079 set_robust_list(0x555591203760, 24) = 0 rseq(0x555591203da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2289700591", 4096) = 28 getrandom("\x9a\xd7\x44\x82\x48\xf8\xff\x9e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555591203e00 brk(0x555591224e00) = 0x555591224e00 brk(0x555591225000) = 0x555591225000 mprotect(0x7feecff44000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7feecfe99940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7feecfea2690}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7feecfe99940, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7feecfea2690}, NULL, 8) = 0 mkdir("./syzkaller.aPcFqb", 0700) = 0 chmod("./syzkaller.aPcFqb", 0777) = 0 chdir("./syzkaller.aPcFqb") = 0 mkdir("./0", 0777) = 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 5080 attached , child_tidptr=0x555591203750) = 5080 [pid 5080] set_robust_list(0x555591203760, 24) = 0 [pid 5080] chdir("./0") = 0 [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5080] setpgid(0, 0) = 0 [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "1000", 4) = 4 [pid 5080] close(3) = 0 [pid 5080] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5080] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5080] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5080] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5080] memfd_create("syzkaller", 0) = 5 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5080] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5080] munmap(0x7feec7a00000, 138412032) = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5080] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5080] close(5) = 0 [pid 5080] close(6) = 0 [pid 5080] mkdir("./bus", 0777) = 0 [ 78.373914][ T5080] loop0: detected capacity change from 0 to 512 [pid 5080] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5080] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5080] chdir("./bus") = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 78.431380][ T5080] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 78.444371][ T5080] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/0/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5080] mkdir("./bus", 0777) = 0 [pid 5080] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5080] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5080] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5080] exit_group(0) = ? [pid 5080] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./0/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/cpuset.effective_cpus") = 0 umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 [ 78.593173][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./0/bus") = 0 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 umount2("./0/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 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 5085 attached [pid 5085] set_robust_list(0x555591203760, 24) = 0 [pid 5085] chdir("./1" [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5085 [pid 5085] <... chdir resumed>) = 0 [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5085] setpgid(0, 0) = 0 [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5085] write(3, "1000", 4) = 4 [pid 5085] close(3) = 0 [pid 5085] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5085] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5085] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5085] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5085] memfd_create("syzkaller", 0) = 5 [pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5085] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5085] munmap(0x7feec7a00000, 138412032) = 0 [pid 5085] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5085] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5085] close(5) = 0 [pid 5085] close(6) = 0 [pid 5085] mkdir("./bus", 0777) = 0 [ 78.843067][ T5085] loop0: detected capacity change from 0 to 512 [pid 5085] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5085] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5085] chdir("./bus") = 0 [pid 5085] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5085] mkdir("./bus", 0777) = 0 [pid 5085] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5085] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 78.887439][ T5085] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 78.900464][ T5085] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/1/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5085] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5085] exit_group(0) = ? [pid 5085] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./1/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/cpuset.effective_cpus") = 0 umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 78.991059][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./1/bus") = 0 umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/binderfs") = 0 umount2("./1/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 0777) = 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 5088 attached , child_tidptr=0x555591203750) = 5088 [pid 5088] set_robust_list(0x555591203760, 24) = 0 [pid 5088] chdir("./2") = 0 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5088] setpgid(0, 0) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1000", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5088] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5088] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5088] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5088] memfd_create("syzkaller", 0) = 5 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5088] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5088] munmap(0x7feec7a00000, 138412032) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5088] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5088] close(5) = 0 [pid 5088] close(6) = 0 [pid 5088] mkdir("./bus", 0777) = 0 [ 79.297748][ T5088] loop0: detected capacity change from 0 to 512 [pid 5088] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5088] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5088] chdir("./bus") = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5088] mkdir("./bus", 0777) = 0 [pid 5088] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5088] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 79.356748][ T5088] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 79.369462][ T5088] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/2/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5088] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5088] exit_group(0) = ? [pid 5088] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./2/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/cpuset.effective_cpus") = 0 umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./2/bus") = 0 umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/binderfs") = 0 umount2("./2/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./2") = 0 mkdir("./3", 0777) = 0 [ 79.445356][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5091 attached , child_tidptr=0x555591203750) = 5091 [pid 5091] set_robust_list(0x555591203760, 24) = 0 [pid 5091] chdir("./3") = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5091] setpgid(0, 0) = 0 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] write(3, "1000", 4) = 4 [pid 5091] close(3) = 0 [pid 5091] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5091] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5091] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5091] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5091] memfd_create("syzkaller", 0) = 5 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5091] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5091] munmap(0x7feec7a00000, 138412032) = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5091] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5091] close(5) = 0 [pid 5091] close(6) = 0 [pid 5091] mkdir("./bus", 0777) = 0 [ 79.658542][ T5091] loop0: detected capacity change from 0 to 512 [pid 5091] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5091] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5091] chdir("./bus") = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5091] mkdir("./bus", 0777) = 0 [pid 5091] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5091] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5091] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 79.717558][ T5091] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 79.731393][ T5091] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/3/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5091] exit_group(0) = ? [pid 5091] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./3/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/cpuset.effective_cpus") = 0 umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 [ 79.862876][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./3/bus") = 0 umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/binderfs") = 0 umount2("./3/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./3/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./3/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./3") = 0 mkdir("./4", 0777) = 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 5094 attached , child_tidptr=0x555591203750) = 5094 [pid 5094] set_robust_list(0x555591203760, 24) = 0 [pid 5094] chdir("./4") = 0 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5094] setpgid(0, 0) = 0 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1000", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5094] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5094] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5094] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5094] memfd_create("syzkaller", 0) = 5 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5094] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5094] munmap(0x7feec7a00000, 138412032) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5094] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5094] close(5) = 0 [pid 5094] close(6) = 0 [pid 5094] mkdir("./bus", 0777) = 0 [ 80.202764][ T5094] loop0: detected capacity change from 0 to 512 [pid 5094] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5094] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5094] chdir("./bus") = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5094] mkdir("./bus", 0777) = 0 [pid 5094] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5094] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5094] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5094] exit_group(0) = ? [pid 5094] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./4/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/cpuset.effective_cpus") = 0 [ 80.247459][ T5094] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 80.260252][ T5094] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/4/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 80.308812][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./4/bus") = 0 umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/binderfs") = 0 umount2("./4/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./4/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./4/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./4") = 0 mkdir("./5", 0777) = 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 5097 attached , child_tidptr=0x555591203750) = 5097 [pid 5097] set_robust_list(0x555591203760, 24) = 0 [pid 5097] chdir("./5") = 0 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5097] setpgid(0, 0) = 0 [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5097] write(3, "1000", 4) = 4 [pid 5097] close(3) = 0 [pid 5097] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5097] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5097] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5097] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5097] memfd_create("syzkaller", 0) = 5 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5097] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5097] munmap(0x7feec7a00000, 138412032) = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5097] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5097] close(5) = 0 [pid 5097] close(6) = 0 [pid 5097] mkdir("./bus", 0777) = 0 [ 80.648965][ T5097] loop0: detected capacity change from 0 to 512 [pid 5097] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5097] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5097] chdir("./bus") = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5097] mkdir("./bus", 0777) = 0 [pid 5097] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 80.697050][ T5097] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 80.709817][ T5097] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/5/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5097] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5097] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5097] exit_group(0) = ? [pid 5097] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./5/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/cpuset.effective_cpus") = 0 umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 [ 80.786150][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./5/bus") = 0 umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/binderfs") = 0 umount2("./5/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./5/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./5/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./5") = 0 mkdir("./6", 0777) = 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 5100 attached , child_tidptr=0x555591203750) = 5100 [pid 5100] set_robust_list(0x555591203760, 24) = 0 [pid 5100] chdir("./6") = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5100] setpgid(0, 0) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5100] write(3, "1000", 4) = 4 [pid 5100] close(3) = 0 [pid 5100] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5100] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5100] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5100] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5100] memfd_create("syzkaller", 0) = 5 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5100] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5100] munmap(0x7feec7a00000, 138412032) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5100] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5100] close(5) = 0 [pid 5100] close(6) = 0 [pid 5100] mkdir("./bus", 0777) = 0 [ 81.097595][ T5100] loop0: detected capacity change from 0 to 512 [pid 5100] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5100] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5100] chdir("./bus") = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5100] mkdir("./bus", 0777) = 0 [pid 5100] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5100] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5100] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5100] exit_group(0) = ? [ 81.146936][ T5100] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 81.159837][ T5100] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/6/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5100] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./6/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/cpuset.effective_cpus") = 0 umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 [ 81.232298][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./6/bus") = 0 umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/binderfs") = 0 umount2("./6/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./6/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./6/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./6") = 0 mkdir("./7", 0777) = 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 5103 attached [pid 5103] set_robust_list(0x555591203760, 24) = 0 [pid 5103] chdir("./7") = 0 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5103 [pid 5103] <... prctl resumed>) = 0 [pid 5103] setpgid(0, 0) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5103] write(3, "1000", 4) = 4 [pid 5103] close(3) = 0 [pid 5103] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5103] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5103] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5103] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5103] memfd_create("syzkaller", 0) = 5 [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5103] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5103] munmap(0x7feec7a00000, 138412032) = 0 [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5103] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5103] close(5) = 0 [pid 5103] close(6) = 0 [pid 5103] mkdir("./bus", 0777) = 0 [ 81.548823][ T5103] loop0: detected capacity change from 0 to 512 [pid 5103] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5103] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5103] chdir("./bus") = 0 [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5103] mkdir("./bus", 0777) = 0 [pid 5103] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5103] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5103] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5103] exit_group(0) = ? [pid 5103] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./7/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/cpuset.effective_cpus") = 0 [ 81.596956][ T5103] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 81.610386][ T5103] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/7/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./7/bus") = 0 umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/binderfs") = 0 umount2("./7/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./7/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./7/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./7") = 0 mkdir("./8", 0777) = 0 [ 81.660956][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5106 attached , child_tidptr=0x555591203750) = 5106 [pid 5106] set_robust_list(0x555591203760, 24) = 0 [pid 5106] chdir("./8") = 0 [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5106] setpgid(0, 0) = 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5106] write(3, "1000", 4) = 4 [pid 5106] close(3) = 0 [pid 5106] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5106] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5106] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5106] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5106] memfd_create("syzkaller", 0) = 5 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5106] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5106] munmap(0x7feec7a00000, 138412032) = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5106] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5106] close(5) = 0 [pid 5106] close(6) = 0 [pid 5106] mkdir("./bus", 0777) = 0 [ 81.874515][ T5106] loop0: detected capacity change from 0 to 512 [pid 5106] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5106] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5106] chdir("./bus") = 0 [pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5106] mkdir("./bus", 0777) = 0 [pid 5106] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 81.944494][ T5106] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 81.957289][ T5106] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/8/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5106] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5106] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5106] exit_group(0) = ? [pid 5106] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./8/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/cpuset.effective_cpus") = 0 umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 82.090075][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./8/bus") = 0 umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/binderfs") = 0 umount2("./8/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./8/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./8/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./8") = 0 mkdir("./9", 0777) = 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 5110 attached [pid 5110] set_robust_list(0x555591203760, 24) = 0 [pid 5110] chdir("./9" [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5110 [pid 5110] <... chdir resumed>) = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5110] setpgid(0, 0) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5110] write(3, "1000", 4) = 4 [pid 5110] close(3) = 0 [pid 5110] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5110] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5110] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5110] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5110] memfd_create("syzkaller", 0) = 5 [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5110] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5110] munmap(0x7feec7a00000, 138412032) = 0 [pid 5110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5110] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5110] close(5) = 0 [pid 5110] close(6) = 0 [pid 5110] mkdir("./bus", 0777) = 0 [ 82.496348][ T5110] loop0: detected capacity change from 0 to 512 [pid 5110] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5110] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5110] chdir("./bus") = 0 [pid 5110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5110] mkdir("./bus", 0777) = 0 [pid 5110] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5110] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5110] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 82.547046][ T5110] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 82.560004][ T5110] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/9/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5110] exit_group(0) = ? [pid 5110] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./9/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/cpuset.effective_cpus") = 0 umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./9/bus") = 0 umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/binderfs") = 0 umount2("./9/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./9/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./9/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 [ 82.626252][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. rmdir("./9") = 0 mkdir("./10", 0777) = 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 5113 attached [pid 5113] set_robust_list(0x555591203760, 24) = 0 [pid 5113] chdir("./10" [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5113 [pid 5113] <... chdir resumed>) = 0 [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5113] setpgid(0, 0) = 0 [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5113] write(3, "1000", 4) = 4 [pid 5113] close(3) = 0 [pid 5113] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5113] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5113] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5113] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5113] memfd_create("syzkaller", 0) = 5 [pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5113] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5113] munmap(0x7feec7a00000, 138412032) = 0 [pid 5113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5113] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5113] close(5) = 0 [pid 5113] close(6) = 0 [pid 5113] mkdir("./bus", 0777) = 0 [ 82.857522][ T5113] loop0: detected capacity change from 0 to 512 [pid 5113] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5113] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5113] chdir("./bus") = 0 [pid 5113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 82.906482][ T5113] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 82.919464][ T5113] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/10/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5113] mkdir("./bus", 0777) = 0 [pid 5113] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5113] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5113] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5113] exit_group(0) = ? [pid 5113] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./10/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/cpuset.effective_cpus") = 0 umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./10/bus") = 0 umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/binderfs") = 0 umount2("./10/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./10/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./10/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./10") = 0 mkdir("./11", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 83.030393][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5116 attached , child_tidptr=0x555591203750) = 5116 [pid 5116] set_robust_list(0x555591203760, 24) = 0 [pid 5116] chdir("./11") = 0 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5116] setpgid(0, 0) = 0 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5116] write(3, "1000", 4) = 4 [pid 5116] close(3) = 0 [pid 5116] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5116] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5116] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5116] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5116] memfd_create("syzkaller", 0) = 5 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5116] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5116] munmap(0x7feec7a00000, 138412032) = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5116] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5116] close(5) = 0 [pid 5116] close(6) = 0 [pid 5116] mkdir("./bus", 0777) = 0 [ 83.218257][ T5116] loop0: detected capacity change from 0 to 512 [pid 5116] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5116] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5116] chdir("./bus") = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5116] mkdir("./bus", 0777) = 0 [pid 5116] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5116] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5116] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5116] exit_group(0) = ? [ 83.266226][ T5116] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 83.279080][ T5116] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/11/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5116] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./11/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/cpuset.effective_cpus") = 0 umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 [ 83.395279][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./11/bus") = 0 umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/binderfs") = 0 umount2("./11/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./11/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./11/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./11") = 0 mkdir("./12", 0777) = 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 5119 attached , child_tidptr=0x555591203750) = 5119 [pid 5119] set_robust_list(0x555591203760, 24) = 0 [pid 5119] chdir("./12") = 0 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5119] setpgid(0, 0) = 0 [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5119] write(3, "1000", 4) = 4 [pid 5119] close(3) = 0 [pid 5119] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5119] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5119] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5119] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5119] memfd_create("syzkaller", 0) = 5 [pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5119] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5119] munmap(0x7feec7a00000, 138412032) = 0 [pid 5119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5119] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5119] close(5) = 0 [pid 5119] close(6) = 0 [pid 5119] mkdir("./bus", 0777) = 0 [ 83.690386][ T5119] loop0: detected capacity change from 0 to 512 [ 83.726964][ T5119] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5119] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5119] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5119] chdir("./bus") = 0 [pid 5119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5119] mkdir("./bus", 0777) = 0 [pid 5119] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5119] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5119] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5119] exit_group(0) = ? [pid 5119] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./12/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 83.739950][ T5119] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/12/bus supports timestamps until 2038-01-19 (0x7fffffff) unlink("./12/cpuset.effective_cpus") = 0 umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 83.806651][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./12/bus") = 0 umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/binderfs") = 0 umount2("./12/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./12/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./12/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./12") = 0 mkdir("./13", 0777) = 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 5122 attached , child_tidptr=0x555591203750) = 5122 [pid 5122] set_robust_list(0x555591203760, 24) = 0 [pid 5122] chdir("./13") = 0 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5122] setpgid(0, 0) = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5122] write(3, "1000", 4) = 4 [pid 5122] close(3) = 0 [pid 5122] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5122] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5122] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5122] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5122] memfd_create("syzkaller", 0) = 5 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5122] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5122] munmap(0x7feec7a00000, 138412032) = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5122] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5122] close(5) = 0 [pid 5122] close(6) = 0 [pid 5122] mkdir("./bus", 0777) = 0 [ 84.168007][ T5122] loop0: detected capacity change from 0 to 512 [pid 5122] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5122] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5122] chdir("./bus") = 0 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5122] mkdir("./bus", 0777) = 0 [pid 5122] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 84.226496][ T5122] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 84.239537][ T5122] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/13/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5122] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5122] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5122] exit_group(0) = ? [pid 5122] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./13/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/cpuset.effective_cpus") = 0 umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./13/bus") = 0 umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/binderfs") = 0 umount2("./13/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./13/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./13/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 [ 84.364174][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(3) = 0 rmdir("./13") = 0 mkdir("./14", 0777) = 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=0x555591203750) = 5125 ./strace-static-x86_64: Process 5125 attached [pid 5125] set_robust_list(0x555591203760, 24) = 0 [pid 5125] chdir("./14") = 0 [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5125] setpgid(0, 0) = 0 [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5125] write(3, "1000", 4) = 4 [pid 5125] close(3) = 0 [pid 5125] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5125] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5125] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5125] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5125] memfd_create("syzkaller", 0) = 5 [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5125] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5125] munmap(0x7feec7a00000, 138412032) = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5125] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5125] close(5) = 0 [pid 5125] close(6) = 0 [pid 5125] mkdir("./bus", 0777) = 0 [ 84.541420][ T5125] loop0: detected capacity change from 0 to 512 [pid 5125] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5125] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5125] chdir("./bus") = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5125] mkdir("./bus", 0777) = 0 [pid 5125] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 84.587140][ T5125] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 84.599893][ T5125] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/14/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5125] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5125] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5125] exit_group(0) = ? [pid 5125] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./14/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/cpuset.effective_cpus") = 0 umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./14/bus") = 0 umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/binderfs") = 0 umount2("./14/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./14/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./14/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./14") = 0 mkdir("./15", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 84.788068][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5128 attached , child_tidptr=0x555591203750) = 5128 [pid 5128] set_robust_list(0x555591203760, 24) = 0 [pid 5128] chdir("./15") = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5128] setpgid(0, 0) = 0 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5128] write(3, "1000", 4) = 4 [pid 5128] close(3) = 0 [pid 5128] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5128] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5128] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5128] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5128] memfd_create("syzkaller", 0) = 5 [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5128] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5128] munmap(0x7feec7a00000, 138412032) = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5128] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5128] close(5) = 0 [pid 5128] close(6) = 0 [pid 5128] mkdir("./bus", 0777) = 0 [ 84.984570][ T5128] loop0: detected capacity change from 0 to 512 [pid 5128] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5128] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5128] chdir("./bus") = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5128] mkdir("./bus", 0777) = 0 [ 85.028430][ T5128] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 85.041059][ T5128] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/15/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5128] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5128] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5128] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5128] exit_group(0) = ? [pid 5128] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./15/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/cpuset.effective_cpus") = 0 umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./15/bus") = 0 umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/binderfs") = 0 umount2("./15/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./15/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./15/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./15") = 0 mkdir("./16", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 85.147153][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5132 attached , child_tidptr=0x555591203750) = 5132 [pid 5132] set_robust_list(0x555591203760, 24) = 0 [pid 5132] chdir("./16") = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4) = 4 [pid 5132] close(3) = 0 [pid 5132] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5132] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5132] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5132] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5132] memfd_create("syzkaller", 0) = 5 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5132] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5132] munmap(0x7feec7a00000, 138412032) = 0 [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5132] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5132] close(5) = 0 [pid 5132] close(6) = 0 [pid 5132] mkdir("./bus", 0777) = 0 [ 85.367810][ T5132] loop0: detected capacity change from 0 to 512 [pid 5132] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5132] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5132] chdir("./bus") = 0 [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 85.418806][ T5132] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 85.431675][ T5132] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/16/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5132] mkdir("./bus", 0777) = 0 [pid 5132] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5132] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5132] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5132] exit_group(0) = ? [pid 5132] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./16/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/cpuset.effective_cpus") = 0 umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./16/bus") = 0 umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/binderfs") = 0 umount2("./16/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./16/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./16/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./16") = 0 mkdir("./17", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 85.547006][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5135 attached [pid 5135] set_robust_list(0x555591203760, 24) = 0 [pid 5135] chdir("./17") = 0 [pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5135 [pid 5135] <... prctl resumed>) = 0 [pid 5135] setpgid(0, 0) = 0 [pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5135] write(3, "1000", 4) = 4 [pid 5135] close(3) = 0 [pid 5135] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5135] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5135] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5135] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5135] memfd_create("syzkaller", 0) = 5 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5135] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5135] munmap(0x7feec7a00000, 138412032) = 0 [pid 5135] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5135] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5135] close(5) = 0 [pid 5135] close(6) = 0 [pid 5135] mkdir("./bus", 0777) = 0 [ 85.732284][ T5135] loop0: detected capacity change from 0 to 512 [pid 5135] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5135] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5135] chdir("./bus") = 0 [pid 5135] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 85.775973][ T5135] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 85.788778][ T5135] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/17/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5135] mkdir("./bus", 0777) = 0 [pid 5135] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5135] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5135] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5135] exit_group(0) = ? [pid 5135] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./17/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/cpuset.effective_cpus") = 0 umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./17/bus") = 0 umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/binderfs") = 0 umount2("./17/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./17/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./17/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./17") = 0 mkdir("./18", 0777) = 0 [ 85.925107][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5138 attached , child_tidptr=0x555591203750) = 5138 [pid 5138] set_robust_list(0x555591203760, 24) = 0 [pid 5138] chdir("./18") = 0 [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5138] setpgid(0, 0) = 0 [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5138] write(3, "1000", 4) = 4 [pid 5138] close(3) = 0 [pid 5138] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5138] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5138] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5138] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5138] memfd_create("syzkaller", 0) = 5 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5138] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5138] munmap(0x7feec7a00000, 138412032) = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5138] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5138] close(5) = 0 [pid 5138] close(6) = 0 [pid 5138] mkdir("./bus", 0777) = 0 [ 86.129360][ T5138] loop0: detected capacity change from 0 to 512 [pid 5138] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5138] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5138] chdir("./bus") = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5138] mkdir("./bus", 0777) = 0 [pid 5138] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5138] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 86.176776][ T5138] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 86.189579][ T5138] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/18/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5138] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5138] exit_group(0) = ? [pid 5138] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./18/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/cpuset.effective_cpus") = 0 umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./18/bus") = 0 [ 86.317726][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/binderfs") = 0 umount2("./18/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./18/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./18/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./18") = 0 mkdir("./19", 0777) = 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 5141 attached , child_tidptr=0x555591203750) = 5141 [pid 5141] set_robust_list(0x555591203760, 24) = 0 [pid 5141] chdir("./19") = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5141] setpgid(0, 0) = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] write(3, "1000", 4) = 4 [pid 5141] close(3) = 0 [pid 5141] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5141] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5141] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5141] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5141] memfd_create("syzkaller", 0) = 5 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5141] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5141] munmap(0x7feec7a00000, 138412032) = 0 [pid 5141] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5141] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5141] close(5) = 0 [pid 5141] close(6) = 0 [pid 5141] mkdir("./bus", 0777) = 0 [ 86.566619][ T5141] loop0: detected capacity change from 0 to 512 [pid 5141] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5141] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5141] chdir("./bus") = 0 [pid 5141] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5141] mkdir("./bus", 0777) = 0 [pid 5141] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5141] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 86.627240][ T5141] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 86.640100][ T5141] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/19/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5141] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5141] exit_group(0) = ? [pid 5141] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./19/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/cpuset.effective_cpus") = 0 umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 [ 86.762500][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./19/bus") = 0 umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/binderfs") = 0 umount2("./19/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./19/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./19/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./19") = 0 mkdir("./20", 0777) = 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 5144 attached , child_tidptr=0x555591203750) = 5144 [pid 5144] set_robust_list(0x555591203760, 24) = 0 [pid 5144] chdir("./20") = 0 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5144] setpgid(0, 0) = 0 [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5144] write(3, "1000", 4) = 4 [pid 5144] close(3) = 0 [pid 5144] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5144] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5144] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5144] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5144] memfd_create("syzkaller", 0) = 5 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5144] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5144] munmap(0x7feec7a00000, 138412032) = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5144] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5144] close(5) = 0 [pid 5144] close(6) = 0 [pid 5144] mkdir("./bus", 0777) = 0 [ 87.080330][ T5144] loop0: detected capacity change from 0 to 512 [pid 5144] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5144] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5144] chdir("./bus") = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5144] mkdir("./bus", 0777) = 0 [pid 5144] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5144] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5144] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5144] exit_group(0) = ? [pid 5144] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./20/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/cpuset.effective_cpus") = 0 [ 87.137142][ T5144] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 87.150408][ T5144] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/20/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./20/bus") = 0 umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/binderfs") = 0 umount2("./20/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./20/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./20/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./20") = 0 mkdir("./21", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 87.213039][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5147 attached , child_tidptr=0x555591203750) = 5147 [pid 5147] set_robust_list(0x555591203760, 24) = 0 [pid 5147] chdir("./21") = 0 [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5147] setpgid(0, 0) = 0 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5147] write(3, "1000", 4) = 4 [pid 5147] close(3) = 0 [pid 5147] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5147] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5147] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5147] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5147] memfd_create("syzkaller", 0) = 5 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5147] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5147] munmap(0x7feec7a00000, 138412032) = 0 [pid 5147] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5147] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5147] close(5) = 0 [pid 5147] close(6) = 0 [pid 5147] mkdir("./bus", 0777) = 0 [ 87.422069][ T5147] loop0: detected capacity change from 0 to 512 [pid 5147] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5147] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5147] chdir("./bus") = 0 [pid 5147] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5147] mkdir("./bus", 0777) = 0 [pid 5147] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5147] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5147] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5147] exit_group(0) = ? [pid 5147] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./21/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/cpuset.effective_cpus") = 0 [ 87.476530][ T5147] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 87.489387][ T5147] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/21/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./21/bus") = 0 umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/binderfs") = 0 umount2("./21/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./21/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./21/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./21") = 0 mkdir("./22", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 87.540953][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. 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 5150 attached [pid 5150] set_robust_list(0x555591203760, 24 [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5150 [pid 5150] <... set_robust_list resumed>) = 0 [pid 5150] chdir("./22") = 0 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5150] setpgid(0, 0) = 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5150] write(3, "1000", 4) = 4 [pid 5150] close(3) = 0 [pid 5150] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5150] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5150] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5150] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5150] memfd_create("syzkaller", 0) = 5 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5150] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5150] munmap(0x7feec7a00000, 138412032) = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5150] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5150] close(5) = 0 [pid 5150] close(6) = 0 [pid 5150] mkdir("./bus", 0777) = 0 [ 87.702322][ T5150] loop0: detected capacity change from 0 to 512 [ 87.738789][ T5150] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5150] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5150] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5150] chdir("./bus") = 0 [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5150] mkdir("./bus", 0777) = 0 [pid 5150] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5150] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 87.751483][ T5150] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/22/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5150] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5150] exit_group(0) = ? [pid 5150] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./22/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/cpuset.effective_cpus") = 0 umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 87.829646][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./22/bus") = 0 umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/binderfs") = 0 umount2("./22/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./22/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./22/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./22") = 0 mkdir("./23", 0777) = 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 5153 attached , child_tidptr=0x555591203750) = 5153 [pid 5153] set_robust_list(0x555591203760, 24) = 0 [pid 5153] chdir("./23") = 0 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5153] setpgid(0, 0) = 0 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5153] write(3, "1000", 4) = 4 [pid 5153] close(3) = 0 [pid 5153] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5153] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5153] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5153] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5153] memfd_create("syzkaller", 0) = 5 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5153] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5153] munmap(0x7feec7a00000, 138412032) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5153] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5153] close(5) = 0 [pid 5153] close(6) = 0 [pid 5153] mkdir("./bus", 0777) = 0 [ 88.131942][ T5153] loop0: detected capacity change from 0 to 512 [pid 5153] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5153] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5153] chdir("./bus") = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 88.185978][ T5153] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 88.198856][ T5153] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/23/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5153] mkdir("./bus", 0777) = 0 [pid 5153] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5153] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5153] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5153] exit_group(0) = ? [pid 5153] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./23/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/cpuset.effective_cpus") = 0 umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 88.381682][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./23/bus") = 0 umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/binderfs") = 0 umount2("./23/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./23/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./23/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./23") = 0 mkdir("./24", 0777) = 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 5156 attached , child_tidptr=0x555591203750) = 5156 [pid 5156] set_robust_list(0x555591203760, 24) = 0 [pid 5156] chdir("./24") = 0 [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5156] setpgid(0, 0) = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5156] write(3, "1000", 4) = 4 [pid 5156] close(3) = 0 [pid 5156] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5156] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5156] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5156] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5156] memfd_create("syzkaller", 0) = 5 [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5156] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5156] munmap(0x7feec7a00000, 138412032) = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5156] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5156] close(5) = 0 [pid 5156] close(6) = 0 [pid 5156] mkdir("./bus", 0777) = 0 [ 88.675949][ T5156] loop0: detected capacity change from 0 to 512 [ 88.708833][ T5156] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5156] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5156] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5156] chdir("./bus") = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5156] mkdir("./bus", 0777) = 0 [pid 5156] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 88.721766][ T5156] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/24/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5156] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5156] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5156] exit_group(0) = ? [pid 5156] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./24/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/cpuset.effective_cpus") = 0 umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 88.874123][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./24/bus") = 0 umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/binderfs") = 0 umount2("./24/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./24/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./24/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./24") = 0 mkdir("./25", 0777) = 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 5159 attached , child_tidptr=0x555591203750) = 5159 [pid 5159] set_robust_list(0x555591203760, 24) = 0 [pid 5159] chdir("./25") = 0 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5159] setpgid(0, 0) = 0 [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5159] write(3, "1000", 4) = 4 [pid 5159] close(3) = 0 [pid 5159] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5159] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5159] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5159] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5159] memfd_create("syzkaller", 0) = 5 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5159] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5159] munmap(0x7feec7a00000, 138412032) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5159] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5159] close(5) = 0 [pid 5159] close(6) = 0 [pid 5159] mkdir("./bus", 0777) = 0 [ 89.220429][ T5159] loop0: detected capacity change from 0 to 512 [pid 5159] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5159] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5159] chdir("./bus") = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5159] mkdir("./bus", 0777) = 0 [pid 5159] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5159] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5159] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5159] exit_group(0) = ? [ 89.276121][ T5159] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 89.289479][ T5159] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/25/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5159] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./25/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/cpuset.effective_cpus") = 0 umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./25/bus") = 0 umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/binderfs") = 0 umount2("./25/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./25/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./25/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./25") = 0 mkdir("./26", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 89.436457][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555591203750) = 5162 ./strace-static-x86_64: Process 5162 attached [pid 5162] set_robust_list(0x555591203760, 24) = 0 [pid 5162] chdir("./26") = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5162] setpgid(0, 0) = 0 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5162] write(3, "1000", 4) = 4 [pid 5162] close(3) = 0 [pid 5162] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5162] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5162] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5162] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5162] memfd_create("syzkaller", 0) = 5 [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5162] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5162] munmap(0x7feec7a00000, 138412032) = 0 [pid 5162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5162] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5162] close(5) = 0 [pid 5162] close(6) = 0 [pid 5162] mkdir("./bus", 0777) = 0 [ 89.617552][ T5162] loop0: detected capacity change from 0 to 512 [pid 5162] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5162] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5162] chdir("./bus") = 0 [pid 5162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5162] mkdir("./bus", 0777) = 0 [pid 5162] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5162] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5162] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5162] exit_group(0) = ? [pid 5162] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./26/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/cpuset.effective_cpus") = 0 [ 89.666922][ T5162] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 89.680185][ T5162] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/26/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 [ 89.726566][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./26/bus") = 0 umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/binderfs") = 0 umount2("./26/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./26/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./26/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./26") = 0 mkdir("./27", 0777) = 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 5166 attached [pid 5166] set_robust_list(0x555591203760, 24) = 0 [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5166 [pid 5166] chdir("./27") = 0 [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5166] setpgid(0, 0) = 0 [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5166] write(3, "1000", 4) = 4 [pid 5166] close(3) = 0 [pid 5166] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5166] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5166] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5166] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5166] memfd_create("syzkaller", 0) = 5 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5166] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5166] munmap(0x7feec7a00000, 138412032) = 0 [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5166] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5166] close(5) = 0 [pid 5166] close(6) = 0 [pid 5166] mkdir("./bus", 0777) = 0 [ 90.018009][ T5166] loop0: detected capacity change from 0 to 512 [pid 5166] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5166] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5166] chdir("./bus") = 0 [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5166] mkdir("./bus", 0777) = 0 [pid 5166] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5166] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 90.056670][ T5166] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 90.069358][ T5166] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/27/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5166] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5166] exit_group(0) = ? [pid 5166] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./27/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/cpuset.effective_cpus") = 0 umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 [ 90.217618][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. close(4) = 0 rmdir("./27/bus") = 0 umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/binderfs") = 0 umount2("./27/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./27/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./27/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./27") = 0 mkdir("./28", 0777) = 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 5170 attached , child_tidptr=0x555591203750) = 5170 [pid 5170] set_robust_list(0x555591203760, 24) = 0 [pid 5170] chdir("./28") = 0 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5170] setpgid(0, 0) = 0 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5170] write(3, "1000", 4) = 4 [pid 5170] close(3) = 0 [pid 5170] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5170] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5170] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5170] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5170] memfd_create("syzkaller", 0) = 5 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5170] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5170] munmap(0x7feec7a00000, 138412032) = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5170] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5170] close(5) = 0 [pid 5170] close(6) = 0 [pid 5170] mkdir("./bus", 0777) = 0 [ 90.549766][ T5170] loop0: detected capacity change from 0 to 512 [pid 5170] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5170] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5170] chdir("./bus") = 0 [pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5170] mkdir("./bus", 0777) = 0 [ 90.606893][ T5170] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 90.619569][ T5170] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/28/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5170] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5170] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5170] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5170] exit_group(0) = ? [pid 5170] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./28/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/cpuset.effective_cpus") = 0 umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./28/bus") = 0 umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/binderfs") = 0 umount2("./28/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./28/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./28/cgroup.controllers") = 0 [ 90.749914][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./28") = 0 mkdir("./29", 0777) = 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 5173 attached , child_tidptr=0x555591203750) = 5173 [pid 5173] set_robust_list(0x555591203760, 24) = 0 [pid 5173] chdir("./29") = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] setpgid(0, 0) = 0 [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5173] write(3, "1000", 4) = 4 [pid 5173] close(3) = 0 [pid 5173] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5173] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5173] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5173] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5173] memfd_create("syzkaller", 0) = 5 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5173] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5173] munmap(0x7feec7a00000, 138412032) = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5173] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5173] close(5) = 0 [pid 5173] close(6) = 0 [pid 5173] mkdir("./bus", 0777) = 0 [ 90.992551][ T5173] loop0: detected capacity change from 0 to 512 [pid 5173] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5173] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5173] chdir("./bus") = 0 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5173] mkdir("./bus", 0777) = 0 [pid 5173] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 91.037329][ T5173] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 91.050078][ T5173] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/29/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5173] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5173] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5173] exit_group(0) = ? [pid 5173] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./29/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/cpuset.effective_cpus") = 0 umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./29/bus") = 0 umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/binderfs") = 0 umount2("./29/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 91.133206][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(AT_FDCWD, "./29/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./29/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./29") = 0 mkdir("./30", 0777) = 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 5176 attached , child_tidptr=0x555591203750) = 5176 [pid 5176] set_robust_list(0x555591203760, 24) = 0 [pid 5176] chdir("./30") = 0 [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5176] setpgid(0, 0) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5176] write(3, "1000", 4) = 4 [pid 5176] close(3) = 0 [pid 5176] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5176] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5176] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5176] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5176] memfd_create("syzkaller", 0) = 5 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5176] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5176] munmap(0x7feec7a00000, 138412032) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5176] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5176] close(5) = 0 [pid 5176] close(6) = 0 [pid 5176] mkdir("./bus", 0777) = 0 [ 91.316154][ T5176] loop0: detected capacity change from 0 to 512 [pid 5176] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5176] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5176] chdir("./bus") = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5176] mkdir("./bus", 0777) = 0 [pid 5176] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5176] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5176] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5176] exit_group(0) = ? [pid 5176] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 [ 91.356463][ T5176] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 91.369349][ T5176] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/30/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./30/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/cpuset.effective_cpus") = 0 umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 [ 91.426184][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./30/bus") = 0 umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/binderfs") = 0 umount2("./30/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./30/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./30/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./30") = 0 mkdir("./31", 0777) = 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 5179 attached , child_tidptr=0x555591203750) = 5179 [pid 5179] set_robust_list(0x555591203760, 24) = 0 [pid 5179] chdir("./31") = 0 [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] setpgid(0, 0) = 0 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5179] write(3, "1000", 4) = 4 [pid 5179] close(3) = 0 [pid 5179] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5179] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5179] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5179] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5179] memfd_create("syzkaller", 0) = 5 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5179] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5179] munmap(0x7feec7a00000, 138412032) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5179] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5179] close(5) = 0 [pid 5179] close(6) = 0 [pid 5179] mkdir("./bus", 0777) = 0 [ 91.740452][ T5179] loop0: detected capacity change from 0 to 512 [ 91.768505][ T5179] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [pid 5179] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5179] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5179] chdir("./bus") = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5179] mkdir("./bus", 0777) = 0 [pid 5179] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5179] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5179] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 91.781150][ T5179] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/31/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5179] exit_group(0) = ? [pid 5179] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./31/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/cpuset.effective_cpus") = 0 umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./31/bus") = 0 umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/binderfs") = 0 umount2("./31/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 91.857484][ T5079] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. newfstatat(AT_FDCWD, "./31/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./31/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./31") = 0 mkdir("./32", 0777) = 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 5182 attached , child_tidptr=0x555591203750) = 5182 [pid 5182] set_robust_list(0x555591203760, 24) = 0 [pid 5182] chdir("./32") = 0 [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5182] setpgid(0, 0) = 0 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5182] write(3, "1000", 4) = 4 [pid 5182] close(3) = 0 [pid 5182] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5182] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5182] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5182] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5182] memfd_create("syzkaller", 0) = 5 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5182] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5182] munmap(0x7feec7a00000, 138412032) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5182] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5182] close(5) = 0 [pid 5182] close(6) = 0 [pid 5182] mkdir("./bus", 0777) = 0 [ 92.086032][ T5182] loop0: detected capacity change from 0 to 512 [pid 5182] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5182] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5182] chdir("./bus") = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5182] mkdir("./bus", 0777) = 0 [pid 5182] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5182] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5182] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5182] exit_group(0) = ? [pid 5182] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./32/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/cpuset.effective_cpus") = 0 umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [ 92.127275][ T5182] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/32/bus supports timestamps until 2038-01-19 (0x7fffffff) umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./32/bus") = 0 umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./32/binderfs") = 0 umount2("./32/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./32/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 92.294967][ T783] cfg80211: failed to load regulatory.db unlink("./32/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./32") = 0 mkdir("./33", 0777) = 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=0x555591203750) = 5185 ./strace-static-x86_64: Process 5185 attached [pid 5185] set_robust_list(0x555591203760, 24) = 0 [pid 5185] chdir("./33") = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5185] setpgid(0, 0) = 0 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5185] write(3, "1000", 4) = 4 [pid 5185] close(3) = 0 [pid 5185] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5185] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5185] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5185] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5185] memfd_create("syzkaller", 0) = 5 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5185] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5185] munmap(0x7feec7a00000, 138412032) = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5185] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5185] close(5) = 0 [pid 5185] close(6) = 0 [pid 5185] mkdir("./bus", 0777) = 0 [ 92.577517][ T5185] loop0: detected capacity change from 0 to 512 [pid 5185] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5185] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5185] chdir("./bus") = 0 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5185] mkdir("./bus", 0777) = 0 [pid 5185] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5185] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5185] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [ 92.637722][ T5185] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/33/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5185] exit_group(0) = ? [pid 5185] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./33/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/cpuset.effective_cpus") = 0 umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./33/bus") = 0 umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/binderfs") = 0 umount2("./33/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./33/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./33/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./33") = 0 mkdir("./34", 0777) = 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 5188 attached , child_tidptr=0x555591203750) = 5188 [pid 5188] set_robust_list(0x555591203760, 24) = 0 [pid 5188] chdir("./34") = 0 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5188] setpgid(0, 0) = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5188] write(3, "1000", 4) = 4 [pid 5188] close(3) = 0 [pid 5188] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5188] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5188] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5188] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5188] memfd_create("syzkaller", 0) = 5 [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5188] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5188] munmap(0x7feec7a00000, 138412032) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5188] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5188] close(5) = 0 [pid 5188] close(6) = 0 [pid 5188] mkdir("./bus", 0777) = 0 [pid 5188] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5188] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5188] chdir("./bus") = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5188] mkdir("./bus", 0777) = 0 [pid 5188] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5188] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5188] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5188] exit_group(0) = ? [ 92.991018][ T5188] loop0: detected capacity change from 0 to 512 [ 93.027101][ T5188] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/34/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5188] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./34/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/cpuset.effective_cpus") = 0 umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./34/bus") = 0 umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/binderfs") = 0 umount2("./34/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./34/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./34/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./34") = 0 mkdir("./35", 0777) = 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 5191 attached , child_tidptr=0x555591203750) = 5191 [pid 5191] set_robust_list(0x555591203760, 24) = 0 [pid 5191] chdir("./35") = 0 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5191] setpgid(0, 0) = 0 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5191] write(3, "1000", 4) = 4 [pid 5191] close(3) = 0 [pid 5191] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5191] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5191] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5191] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5191] memfd_create("syzkaller", 0) = 5 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5191] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5191] munmap(0x7feec7a00000, 138412032) = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5191] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5191] close(5) = 0 [pid 5191] close(6) = 0 [pid 5191] mkdir("./bus", 0777) = 0 [ 93.484531][ T5191] loop0: detected capacity change from 0 to 512 [pid 5191] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5191] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5191] chdir("./bus") = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5191] mkdir("./bus", 0777) = 0 [pid 5191] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5191] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5191] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5191] exit_group(0) = ? [ 93.527958][ T5191] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/35/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5191] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./35/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/cpuset.effective_cpus") = 0 umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./35/bus") = 0 umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/binderfs") = 0 umount2("./35/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./35/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./35/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./35") = 0 mkdir("./36", 0777) = 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 5195 attached , child_tidptr=0x555591203750) = 5195 [pid 5195] set_robust_list(0x555591203760, 24) = 0 [pid 5195] chdir("./36") = 0 [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5195] setpgid(0, 0) = 0 [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5195] write(3, "1000", 4) = 4 [pid 5195] close(3) = 0 [pid 5195] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5195] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5195] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5195] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5195] memfd_create("syzkaller", 0) = 5 [pid 5195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5195] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5195] munmap(0x7feec7a00000, 138412032) = 0 [pid 5195] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5195] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5195] close(5) = 0 [pid 5195] close(6) = 0 [pid 5195] mkdir("./bus", 0777) = 0 [ 93.997876][ T5195] loop0: detected capacity change from 0 to 512 [pid 5195] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5195] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5195] chdir("./bus") = 0 [pid 5195] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5195] mkdir("./bus", 0777) = 0 [pid 5195] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5195] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 94.047404][ T5195] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/36/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5195] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5195] exit_group(0) = ? [pid 5195] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5195, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./36/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/cpuset.effective_cpus") = 0 umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./36/bus") = 0 umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/binderfs") = 0 umount2("./36/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./36/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./36/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./36") = 0 mkdir("./37", 0777) = 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 5198 attached , child_tidptr=0x555591203750) = 5198 [pid 5198] set_robust_list(0x555591203760, 24) = 0 [pid 5198] chdir("./37") = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5198] setpgid(0, 0) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5198] write(3, "1000", 4) = 4 [pid 5198] close(3) = 0 [pid 5198] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5198] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5198] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5198] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5198] memfd_create("syzkaller", 0) = 5 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5198] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5198] munmap(0x7feec7a00000, 138412032) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5198] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5198] close(5) = 0 [pid 5198] close(6) = 0 [pid 5198] mkdir("./bus", 0777) = 0 [ 94.474930][ T5198] loop0: detected capacity change from 0 to 512 [pid 5198] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5198] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5198] chdir("./bus") = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5198] mkdir("./bus", 0777) = 0 [pid 5198] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5198] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 94.516127][ T5198] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/37/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5198] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5198] exit_group(0) = ? [pid 5198] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./37/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/cpuset.effective_cpus") = 0 umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./37/bus") = 0 umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/binderfs") = 0 umount2("./37/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./37/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./37/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./37") = 0 mkdir("./38", 0777) = 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 5201 attached [pid 5201] set_robust_list(0x555591203760, 24) = 0 [pid 5201] chdir("./38" [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5201 [pid 5201] <... chdir resumed>) = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5201] setpgid(0, 0) = 0 [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5201] write(3, "1000", 4) = 4 [pid 5201] close(3) = 0 [pid 5201] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5201] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5201] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5201] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5201] memfd_create("syzkaller", 0) = 5 [pid 5201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5201] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5201] munmap(0x7feec7a00000, 138412032) = 0 [pid 5201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5201] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5201] close(5) = 0 [pid 5201] close(6) = 0 [pid 5201] mkdir("./bus", 0777) = 0 [ 94.972418][ T5201] loop0: detected capacity change from 0 to 512 [pid 5201] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5201] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5201] chdir("./bus") = 0 [pid 5201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5201] mkdir("./bus", 0777) = 0 [pid 5201] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5201] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 95.017713][ T5201] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/38/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5201] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5201] exit_group(0) = ? [pid 5201] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./38/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/cpuset.effective_cpus") = 0 umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./38/bus") = 0 umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/binderfs") = 0 umount2("./38/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./38/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./38/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./38") = 0 mkdir("./39", 0777) = 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=0x555591203750) = 5205 ./strace-static-x86_64: Process 5205 attached [pid 5205] set_robust_list(0x555591203760, 24) = 0 [pid 5205] chdir("./39") = 0 [pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5205] setpgid(0, 0) = 0 [pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5205] write(3, "1000", 4) = 4 [pid 5205] close(3) = 0 [pid 5205] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5205] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5205] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5205] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5205] memfd_create("syzkaller", 0) = 5 [pid 5205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5205] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5205] munmap(0x7feec7a00000, 138412032) = 0 [pid 5205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5205] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5205] close(5) = 0 [pid 5205] close(6) = 0 [pid 5205] mkdir("./bus", 0777) = 0 [ 95.304434][ T5205] loop0: detected capacity change from 0 to 512 [pid 5205] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5205] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5205] chdir("./bus") = 0 [pid 5205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5205] mkdir("./bus", 0777) = 0 [pid 5205] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5205] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 95.347201][ T5205] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/39/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5205] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5205] exit_group(0) = ? [pid 5205] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5205, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./39/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/cpuset.effective_cpus") = 0 umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./39/bus") = 0 umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/binderfs") = 0 umount2("./39/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./39/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./39/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./39") = 0 mkdir("./40", 0777) = 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 5208 attached , child_tidptr=0x555591203750) = 5208 [pid 5208] set_robust_list(0x555591203760, 24) = 0 [pid 5208] chdir("./40") = 0 [pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5208] setpgid(0, 0) = 0 [pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5208] write(3, "1000", 4) = 4 [pid 5208] close(3) = 0 [pid 5208] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5208] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5208] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5208] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5208] memfd_create("syzkaller", 0) = 5 [pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5208] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5208] munmap(0x7feec7a00000, 138412032) = 0 [pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5208] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5208] close(5) = 0 [pid 5208] close(6) = 0 [pid 5208] mkdir("./bus", 0777) = 0 [ 95.780059][ T5208] loop0: detected capacity change from 0 to 512 [pid 5208] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5208] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5208] chdir("./bus") = 0 [pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5208] mkdir("./bus", 0777) = 0 [pid 5208] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5208] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5208] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5208] exit_group(0) = ? [ 95.826208][ T5208] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/40/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5208] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./40/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/cpuset.effective_cpus") = 0 umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./40/bus") = 0 umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/binderfs") = 0 umount2("./40/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./40/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./40/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./40") = 0 mkdir("./41", 0777) = 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 5211 attached , child_tidptr=0x555591203750) = 5211 [pid 5211] set_robust_list(0x555591203760, 24) = 0 [pid 5211] chdir("./41") = 0 [pid 5211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5211] setpgid(0, 0) = 0 [pid 5211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5211] write(3, "1000", 4) = 4 [pid 5211] close(3) = 0 [pid 5211] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5211] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5211] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5211] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5211] memfd_create("syzkaller", 0) = 5 [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5211] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5211] munmap(0x7feec7a00000, 138412032) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5211] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5211] close(5) = 0 [pid 5211] close(6) = 0 [pid 5211] mkdir("./bus", 0777) = 0 [pid 5211] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5211] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5211] chdir("./bus") = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5211] mkdir("./bus", 0777) = 0 [pid 5211] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 96.390109][ T5211] loop0: detected capacity change from 0 to 512 [ 96.427268][ T5211] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/41/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5211] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5211] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5211] exit_group(0) = ? [pid 5211] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5211, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./41/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/cpuset.effective_cpus") = 0 umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./41/bus") = 0 umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/binderfs") = 0 umount2("./41/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./41/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./41/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./41") = 0 mkdir("./42", 0777) = 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 5214 attached [pid 5214] set_robust_list(0x555591203760, 24) = 0 [pid 5214] chdir("./42") = 0 [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5214 [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5214] setpgid(0, 0) = 0 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5214] write(3, "1000", 4) = 4 [pid 5214] close(3) = 0 [pid 5214] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5214] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5214] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5214] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5214] memfd_create("syzkaller", 0) = 5 [pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5214] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5214] munmap(0x7feec7a00000, 138412032) = 0 [pid 5214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5214] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5214] close(5) = 0 [pid 5214] close(6) = 0 [pid 5214] mkdir("./bus", 0777) = 0 [ 96.791642][ T5214] loop0: detected capacity change from 0 to 512 [pid 5214] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5214] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5214] chdir("./bus") = 0 [pid 5214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5214] mkdir("./bus", 0777) = 0 [pid 5214] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5214] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 96.830914][ T5214] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/42/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5214] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5214] exit_group(0) = ? [pid 5214] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./42/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/cpuset.effective_cpus") = 0 umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./42/bus") = 0 umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/binderfs") = 0 umount2("./42/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./42/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./42/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./42") = 0 mkdir("./43", 0777) = 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=0x555591203750) = 5217 ./strace-static-x86_64: Process 5217 attached [pid 5217] set_robust_list(0x555591203760, 24) = 0 [pid 5217] chdir("./43") = 0 [pid 5217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5217] setpgid(0, 0) = 0 [pid 5217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5217] write(3, "1000", 4) = 4 [pid 5217] close(3) = 0 [pid 5217] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5217] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5217] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5217] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5217] memfd_create("syzkaller", 0) = 5 [pid 5217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5217] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5217] munmap(0x7feec7a00000, 138412032) = 0 [pid 5217] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5217] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5217] close(5) = 0 [pid 5217] close(6) = 0 [pid 5217] mkdir("./bus", 0777) = 0 [ 97.206726][ T5217] loop0: detected capacity change from 0 to 512 [pid 5217] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5217] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5217] chdir("./bus") = 0 [pid 5217] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5217] mkdir("./bus", 0777) = 0 [pid 5217] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5217] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 97.247265][ T5217] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/43/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5217] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5217] exit_group(0) = ? [pid 5217] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5217, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./43/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/cpuset.effective_cpus") = 0 umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./43/bus") = 0 umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/binderfs") = 0 umount2("./43/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./43/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./43/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./43") = 0 mkdir("./44", 0777) = 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 5221 attached , child_tidptr=0x555591203750) = 5221 [pid 5221] set_robust_list(0x555591203760, 24) = 0 [pid 5221] chdir("./44") = 0 [pid 5221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5221] setpgid(0, 0) = 0 [pid 5221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5221] write(3, "1000", 4) = 4 [pid 5221] close(3) = 0 [pid 5221] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5221] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5221] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5221] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5221] memfd_create("syzkaller", 0) = 5 [pid 5221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5221] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5221] munmap(0x7feec7a00000, 138412032) = 0 [pid 5221] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5221] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5221] close(5) = 0 [pid 5221] close(6) = 0 [pid 5221] mkdir("./bus", 0777) = 0 [ 97.692412][ T5221] loop0: detected capacity change from 0 to 512 [pid 5221] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5221] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5221] chdir("./bus") = 0 [pid 5221] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5221] mkdir("./bus", 0777) = 0 [pid 5221] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5221] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 97.739153][ T5221] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/44/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5221] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5221] exit_group(0) = ? [pid 5221] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5221, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./44/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/cpuset.effective_cpus") = 0 umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./44/bus") = 0 umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/binderfs") = 0 umount2("./44/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./44/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./44/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./44") = 0 mkdir("./45", 0777) = 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 5224 attached , child_tidptr=0x555591203750) = 5224 [pid 5224] set_robust_list(0x555591203760, 24) = 0 [pid 5224] chdir("./45") = 0 [pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5224] setpgid(0, 0) = 0 [pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5224] write(3, "1000", 4) = 4 [pid 5224] close(3) = 0 [pid 5224] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5224] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5224] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5224] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5224] memfd_create("syzkaller", 0) = 5 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5224] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5224] munmap(0x7feec7a00000, 138412032) = 0 [pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5224] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5224] close(5) = 0 [pid 5224] close(6) = 0 [pid 5224] mkdir("./bus", 0777) = 0 [pid 5224] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5224] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5224] chdir("./bus") = 0 [pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 98.133019][ T5224] loop0: detected capacity change from 0 to 512 [ 98.166082][ T5224] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/45/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5224] mkdir("./bus", 0777) = 0 [pid 5224] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5224] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5224] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5224] exit_group(0) = ? [pid 5224] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5224, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./45/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/cpuset.effective_cpus") = 0 umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./45/bus") = 0 umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/binderfs") = 0 umount2("./45/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./45/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./45/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./45") = 0 mkdir("./46", 0777) = 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 5227 attached , child_tidptr=0x555591203750) = 5227 [pid 5227] set_robust_list(0x555591203760, 24) = 0 [pid 5227] chdir("./46") = 0 [pid 5227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5227] setpgid(0, 0) = 0 [pid 5227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5227] write(3, "1000", 4) = 4 [pid 5227] close(3) = 0 [pid 5227] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5227] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5227] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5227] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5227] memfd_create("syzkaller", 0) = 5 [pid 5227] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5227] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5227] munmap(0x7feec7a00000, 138412032) = 0 [pid 5227] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5227] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5227] close(5) = 0 [pid 5227] close(6) = 0 [pid 5227] mkdir("./bus", 0777) = 0 [pid 5227] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5227] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5227] chdir("./bus") = 0 [pid 5227] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5227] mkdir("./bus", 0777) = 0 [pid 5227] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [ 98.448859][ T5227] loop0: detected capacity change from 0 to 512 [ 98.478449][ T5227] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/46/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5227] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5227] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5227] exit_group(0) = ? [pid 5227] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5227, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./46/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/cpuset.effective_cpus") = 0 umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./46/bus") = 0 umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/binderfs") = 0 umount2("./46/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./46/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./46/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./46") = 0 mkdir("./47", 0777) = 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 5230 attached , child_tidptr=0x555591203750) = 5230 [pid 5230] set_robust_list(0x555591203760, 24) = 0 [pid 5230] chdir("./47") = 0 [pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5230] setpgid(0, 0) = 0 [pid 5230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "1000", 4) = 4 [pid 5230] close(3) = 0 [pid 5230] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5230] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5230] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5230] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5230] memfd_create("syzkaller", 0) = 5 [pid 5230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5230] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5230] munmap(0x7feec7a00000, 138412032) = 0 [pid 5230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5230] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5230] close(5) = 0 [pid 5230] close(6) = 0 [pid 5230] mkdir("./bus", 0777) = 0 [pid 5230] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5230] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5230] chdir("./bus") = 0 [pid 5230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 98.876972][ T5230] loop0: detected capacity change from 0 to 512 [ 98.908661][ T5230] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/47/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5230] mkdir("./bus", 0777) = 0 [pid 5230] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5230] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5230] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5230] exit_group(0) = ? [pid 5230] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5230, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./47", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./47/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/cpuset.effective_cpus") = 0 umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./47/bus") = 0 umount2("./47/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/binderfs") = 0 umount2("./47/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./47/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./47/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./47") = 0 mkdir("./48", 0777) = 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=0x555591203750) = 5233 ./strace-static-x86_64: Process 5233 attached [pid 5233] set_robust_list(0x555591203760, 24) = 0 [pid 5233] chdir("./48") = 0 [pid 5233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5233] setpgid(0, 0) = 0 [pid 5233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5233] write(3, "1000", 4) = 4 [pid 5233] close(3) = 0 [pid 5233] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5233] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5233] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5233] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5233] memfd_create("syzkaller", 0) = 5 [pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5233] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5233] munmap(0x7feec7a00000, 138412032) = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5233] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5233] close(5) = 0 [pid 5233] close(6) = 0 [pid 5233] mkdir("./bus", 0777) = 0 [ 99.164015][ T5233] loop0: detected capacity change from 0 to 512 [pid 5233] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5233] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5233] chdir("./bus") = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5233] mkdir("./bus", 0777) = 0 [pid 5233] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5233] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5233] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5233] exit_group(0) = ? [ 99.206278][ T5233] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/48/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5233] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5233, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- umount2("./48", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./48/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/cpuset.effective_cpus") = 0 umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./48/bus") = 0 umount2("./48/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/binderfs") = 0 umount2("./48/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./48/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./48/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./48") = 0 mkdir("./49", 0777) = 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 5236 attached , child_tidptr=0x555591203750) = 5236 [pid 5236] set_robust_list(0x555591203760, 24) = 0 [pid 5236] chdir("./49") = 0 [pid 5236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5236] setpgid(0, 0) = 0 [pid 5236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5236] write(3, "1000", 4) = 4 [pid 5236] close(3) = 0 [pid 5236] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5236] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5236] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5236] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5236] memfd_create("syzkaller", 0) = 5 [pid 5236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5236] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5236] munmap(0x7feec7a00000, 138412032) = 0 [pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5236] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5236] close(5) = 0 [pid 5236] close(6) = 0 [pid 5236] mkdir("./bus", 0777) = 0 [pid 5236] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5236] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5236] chdir("./bus") = 0 [pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 99.697366][ T5236] loop0: detected capacity change from 0 to 512 [ 99.731702][ T5236] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/49/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5236] mkdir("./bus", 0777) = 0 [pid 5236] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5236] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5236] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5236] exit_group(0) = ? [pid 5236] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5236, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- umount2("./49", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./49/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/cpuset.effective_cpus") = 0 umount2("./49/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./49/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./49/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./49/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./49/bus") = 0 umount2("./49/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/binderfs") = 0 umount2("./49/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./49/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./49/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./49") = 0 mkdir("./50", 0777) = 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 5239 attached [pid 5239] set_robust_list(0x555591203760, 24 [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5239 [pid 5239] <... set_robust_list resumed>) = 0 [pid 5239] chdir("./50") = 0 [pid 5239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5239] setpgid(0, 0) = 0 [pid 5239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5239] write(3, "1000", 4) = 4 [pid 5239] close(3) = 0 [pid 5239] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5239] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5239] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5239] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5239] memfd_create("syzkaller", 0) = 5 [pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5239] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5239] munmap(0x7feec7a00000, 138412032) = 0 [pid 5239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5239] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5239] close(5) = 0 [pid 5239] close(6) = 0 [pid 5239] mkdir("./bus", 0777) = 0 [ 100.000748][ T5239] loop0: detected capacity change from 0 to 512 [pid 5239] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5239] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5239] chdir("./bus") = 0 [pid 5239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5239] mkdir("./bus", 0777) = 0 [pid 5239] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5239] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 100.039985][ T5239] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/50/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5239] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5239] exit_group(0) = ? [pid 5239] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5239, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./50", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./50/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/cpuset.effective_cpus") = 0 umount2("./50/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./50/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./50/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./50/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./50/bus") = 0 umount2("./50/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/binderfs") = 0 umount2("./50/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./50/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./50/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./50") = 0 mkdir("./51", 0777) = 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 5242 attached [pid 5242] set_robust_list(0x555591203760, 24) = 0 [pid 5242] chdir("./51" [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5242 [pid 5242] <... chdir resumed>) = 0 [pid 5242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5242] setpgid(0, 0) = 0 [pid 5242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5242] write(3, "1000", 4) = 4 [pid 5242] close(3) = 0 [pid 5242] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5242] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5242] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5242] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5242] memfd_create("syzkaller", 0) = 5 [pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5242] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5242] munmap(0x7feec7a00000, 138412032) = 0 [pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5242] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5242] close(5) = 0 [pid 5242] close(6) = 0 [pid 5242] mkdir("./bus", 0777) = 0 [ 100.424051][ T5242] loop0: detected capacity change from 0 to 512 [pid 5242] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5242] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5242] chdir("./bus") = 0 [pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5242] mkdir("./bus", 0777) = 0 [pid 5242] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5242] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 100.477215][ T5242] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/51/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5242] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5242] exit_group(0) = ? [pid 5242] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5242, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./51", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./51/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/cpuset.effective_cpus") = 0 umount2("./51/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./51/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./51/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./51/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./51/bus") = 0 umount2("./51/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/binderfs") = 0 umount2("./51/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./51/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./51/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./51") = 0 mkdir("./52", 0777) = 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 5245 attached [pid 5245] set_robust_list(0x555591203760, 24) = 0 [pid 5245] chdir("./52") = 0 [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5245 [pid 5245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5245] setpgid(0, 0) = 0 [pid 5245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5245] write(3, "1000", 4) = 4 [pid 5245] close(3) = 0 [pid 5245] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5245] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5245] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5245] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5245] memfd_create("syzkaller", 0) = 5 [pid 5245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5245] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5245] munmap(0x7feec7a00000, 138412032) = 0 [pid 5245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5245] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5245] close(5) = 0 [pid 5245] close(6) = 0 [pid 5245] mkdir("./bus", 0777) = 0 [ 100.901041][ T5245] loop0: detected capacity change from 0 to 512 [pid 5245] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5245] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5245] chdir("./bus") = 0 [pid 5245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 100.957156][ T5245] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/52/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5245] mkdir("./bus", 0777) = 0 [pid 5245] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5245] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5245] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5245] exit_group(0) = ? [pid 5245] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5245, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./52", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./52/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/cpuset.effective_cpus") = 0 umount2("./52/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./52/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./52/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./52/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./52/bus") = 0 umount2("./52/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/binderfs") = 0 umount2("./52/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./52/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./52/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./52") = 0 mkdir("./53", 0777) = 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 5249 attached [pid 5249] set_robust_list(0x555591203760, 24 [pid 5079] <... clone resumed>, child_tidptr=0x555591203750) = 5249 [pid 5249] <... set_robust_list resumed>) = 0 [pid 5249] chdir("./53") = 0 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5249] setpgid(0, 0) = 0 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5249] write(3, "1000", 4) = 4 [pid 5249] close(3) = 0 [pid 5249] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5249] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5249] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5249] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5249] memfd_create("syzkaller", 0) = 5 [pid 5249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5249] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5249] munmap(0x7feec7a00000, 138412032) = 0 [pid 5249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5249] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5249] close(5) = 0 [pid 5249] close(6) = 0 [pid 5249] mkdir("./bus", 0777) = 0 [ 101.378053][ T5249] loop0: detected capacity change from 0 to 512 [pid 5249] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5249] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5249] chdir("./bus") = 0 [pid 5249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5249] mkdir("./bus", 0777) = 0 [pid 5249] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5249] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [ 101.418011][ T5249] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/53/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5249] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5249] exit_group(0) = ? [pid 5249] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./53", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./53/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/cpuset.effective_cpus") = 0 umount2("./53/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./53/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./53/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./53/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./53/bus") = 0 umount2("./53/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/binderfs") = 0 umount2("./53/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./53/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./53/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./53") = 0 mkdir("./54", 0777) = 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 5252 attached , child_tidptr=0x555591203750) = 5252 [pid 5252] set_robust_list(0x555591203760, 24) = 0 [pid 5252] chdir("./54") = 0 [pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5252] setpgid(0, 0) = 0 [pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5252] write(3, "1000", 4) = 4 [pid 5252] close(3) = 0 [pid 5252] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5252] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5252] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5252] ioctl(4, _IOC(_IOC_READ|_IOC_WRITE, 0x66, 0xf, 0x28), 0x20000080) = -1 EINVAL (Invalid argument) [pid 5252] memfd_create("syzkaller", 0) = 5 [pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feec7a00000 [pid 5252] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5252] munmap(0x7feec7a00000, 138412032) = 0 [pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5252] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5252] close(5) = 0 [pid 5252] close(6) = 0 [pid 5252] mkdir("./bus", 0777) = 0 [ 101.761659][ T5252] loop0: detected capacity change from 0 to 512 [pid 5252] mount("/dev/loop0", "./bus", "ext4", 0, ",errors=continue") = 0 [pid 5252] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 5 [pid 5252] chdir("./bus") = 0 [pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5252] mkdir("./bus", 0777) = 0 [pid 5252] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5252] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0 [pid 5252] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0 [pid 5252] exit_group(0) = ? [ 101.806264][ T5252] ext4 filesystem being mounted at /root/syzkaller.aPcFqb/54/bus supports timestamps until 2038-01-19 (0x7fffffff) [pid 5252] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- umount2("./54", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555912047f0 /* 6 entries */, 32768) = 192 umount2("./54/cpuset.effective_cpus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/cpuset.effective_cpus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/cpuset.effective_cpus") = 0 umount2("./54/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 umount2("./54/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./54/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./54/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55559120c830 /* 2 entries */, 32768) = 48 getdents64(4, 0x55559120c830 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./54/bus") = 0 umount2("./54/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/binderfs") = 0 umount2("./54/cgroup.controllers", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./54/cgroup.controllers", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./54/cgroup.controllers") = 0 getdents64(3, 0x5555912047f0 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./54") = 0 mkdir("./55", 0777) = 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 5255 attached , child_tidptr=0x555591203750) = 5255 [pid 5255] set_robust_list(0x555591203760, 24) = 0 [pid 5255] chdir("./55") = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5255] write(3, "1000", 4) = 4 [pid 5255] close(3) = 0 [pid 5255] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5255] openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 5255] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 102.072253][ T5255] ------------[ cut here ]------------ [ 102.077759][ T5255] Looking for class "&ei->i_data_sem" with key init_once.__key.798, but found a different class "&ei->i_data_sem" with the same key [ 102.091482][ T5255] WARNING: CPU: 1 PID: 5255 at kernel/locking/lockdep.c:935 look_up_lock_class+0xdc/0x160 [ 102.101435][ T5255] Modules linked in: [ 102.105354][ T5255] CPU: 1 PID: 5255 Comm: syz-executor228 Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0 [ 102.116007][ T5255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 102.126084][ T5255] RIP: 0010:look_up_lock_class+0xdc/0x160 [ 102.131860][ T5255] Code: 01 0f 85 80 00 00 00 c6 05 14 e0 1a 04 01 90 49 8b 16 49 8b 76 18 48 8b 8b b8 00 00 00 48 c7 c7 40 d9 ca 8b e8 b5 f6 e0 f5 90 <0f> 0b 90 90 eb 57 90 e8 c8 e4 2b f9 48 c7 c7 80 d8 ca 8b 89 de e8 [ 102.151484][ T5255] RSP: 0018:ffffc9000406f3f0 EFLAGS: 00010046 [ 102.157651][ T5255] RAX: 491243a0e2b5ca00 RBX: ffffffff92c33be0 RCX: ffff888026c8da00 [ 102.165626][ T5255] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 102.173599][ T5255] RBP: ffffc9000406f500 R08: ffffffff81587c52 R09: 1ffff110172a519a [ 102.181571][ T5255] R10: dffffc0000000000 R11: ffffed10172a519b R12: ffff88807ba29688 [ 102.189546][ T5255] R13: ffff88807ba29688 R14: ffff88807ba29688 R15: ffffffff94826e81 [ 102.197547][ T5255] FS: 0000555591203480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 102.206481][ T5255] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 102.213066][ T5255] CR2: 00007feecff48100 CR3: 000000007c5d4000 CR4: 00000000003506f0 [ 102.221041][ T5255] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.229192][ T5255] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.237186][ T5255] Call Trace: [ 102.240478][ T5255] [ 102.243422][ T5255] ? __warn+0x163/0x4e0 [ 102.247594][ T5255] ? look_up_lock_class+0xdc/0x160 [ 102.252723][ T5255] ? report_bug+0x2b3/0x500 [ 102.257238][ T5255] ? look_up_lock_class+0xdc/0x160 [ 102.262364][ T5255] ? handle_bug+0x3e/0x70 [ 102.266710][ T5255] ? exc_invalid_op+0x1a/0x50 [ 102.271411][ T5255] ? asm_exc_invalid_op+0x1a/0x20 [ 102.276462][ T5255] ? __warn_printk+0x292/0x360 [ 102.281237][ T5255] ? look_up_lock_class+0xdc/0x160 [ 102.286371][ T5255] register_lock_class+0x102/0x980 [ 102.291580][ T5255] ? __pfx_validate_chain+0x10/0x10 [ 102.296800][ T5255] ? __pfx_register_lock_class+0x10/0x10 [ 102.302443][ T5255] __lock_acquire+0xda/0x1fd0 [ 102.307247][ T5255] lock_acquire+0x1ed/0x550 [ 102.311902][ T5255] ? ext4_move_extents+0x39d/0xec0 [ 102.317030][ T5255] ? __pfx_lock_acquire+0x10/0x10 [ 102.322068][ T5255] ? __pfx___might_resched+0x10/0x10 [ 102.327456][ T5255] ? __down_write_common+0x162/0x200 [ 102.332778][ T5255] ? __pfx_inode_dio_wait+0x10/0x10 [ 102.337990][ T5255] ? __pfx___down_write_common+0x10/0x10 [ 102.343636][ T5255] ? __pfx___down_write_common+0x10/0x10 [ 102.349283][ T5255] down_write_nested+0x3d/0x50 [ 102.354058][ T5255] ? ext4_move_extents+0x39d/0xec0 [ 102.359174][ T5255] ext4_move_extents+0x39d/0xec0 [ 102.364123][ T5255] ? rcu_read_lock_any_held+0xb7/0x160 [ 102.369593][ T5255] ? __pfx_ext4_move_extents+0x10/0x10 [ 102.375065][ T5255] ext4_ioctl+0x349a/0x5590 [ 102.379638][ T5255] ? kasan_save_track+0x3f/0x80 [ 102.384496][ T5255] ? kasan_save_free_info+0x40/0x50 [ 102.389708][ T5255] ? security_file_ioctl+0x75/0xb0 [ 102.394827][ T5255] ? do_vfs_ioctl+0x1e77/0x2e50 [ 102.399684][ T5255] ? __pfx_ext4_ioctl+0x10/0x10 [ 102.404543][ T5255] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 102.409669][ T5255] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 102.416000][ T5255] ? tomoyo_path_number_perm+0x208/0x880 [ 102.422079][ T5255] ? __pfx_lock_release+0x10/0x10 [ 102.427138][ T5255] ? kfree+0x153/0x3b0 [ 102.431258][ T5255] ? tomoyo_path_number_perm+0x71a/0x880 [ 102.436917][ T5255] ? tomoyo_path_number_perm+0x208/0x880 [ 102.442644][ T5255] ? smack_log+0x123/0x540 [ 102.447091][ T5255] ? __pfx_tomoyo_path_number_perm+0x10/0x10 [ 102.453090][ T5255] ? __pfx_smack_log+0x10/0x10 [ 102.457867][ T5255] ? smk_access+0x4ab/0x4e0 [ 102.462383][ T5255] ? smk_tskacc+0x300/0x370 [ 102.466895][ T5255] ? smack_file_ioctl+0x2fa/0x3a0 [ 102.471924][ T5255] ? __pfx_smack_file_ioctl+0x10/0x10 [ 102.477304][ T5255] ? __pfx_ptrace_notify+0x10/0x10 [ 102.482512][ T5255] ? bpf_lsm_file_ioctl+0x9/0x10 [ 102.487462][ T5255] ? security_file_ioctl+0x87/0xb0 [ 102.492580][ T5255] ? __pfx_ext4_ioctl+0x10/0x10 [ 102.497437][ T5255] __se_sys_ioctl+0xfc/0x170 [ 102.502040][ T5255] do_syscall_64+0xf5/0x240 [ 102.506561][ T5255] ? clear_bhb_loop+0x35/0x90 [ 102.514462][ T5255] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 102.520364][ T5255] RIP: 0033:0x7feecfecfaa9 [ 102.524785][ T5255] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 102.544397][ T5255] RSP: 002b:00007ffedc2f98d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 102.552821][ T5255] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007feecfecfaa9 [ 102.560885][ T5255] RDX: 0000000020000080 RSI: 00000000c028660f RDI: 0000000000000004 [ 102.568972][ T5255] RBP: 0000000000000000 R08: 00007ffedc2f990c R09: 00007ffedc2f990c [ 102.576966][ T5255] R10: 00007ffedc2f990c R11: 0000000000000246 R12: 00007ffedc2f990c [ 102.585150][ T5255] R13: 0000000000000037 R14: 431bde82d7b634db R15: 00007ffedc2f9940 [ 102.593250][ T5255] [ 102.596296][ T5255] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 102.603612][ T5255] CPU: 1 PID: 5255 Comm: syz-executor228 Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0 [ 102.614078][ T5255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 102.624323][ T5255] Call Trace: [ 102.627649][ T5255] [ 102.630634][ T5255] dump_stack_lvl+0x241/0x360 [ 102.635354][ T5255] ? __pfx_dump_stack_lvl+0x10/0x10 [ 102.640583][ T5255] ? __pfx__printk+0x10/0x10 [ 102.645282][ T5255] ? _printk+0xd5/0x120 [ 102.649461][ T5255] ? vscnprintf+0x5d/0x90 [ 102.653804][ T5255] panic+0x349/0x860 [ 102.657716][ T5255] ? __warn+0x172/0x4e0 [ 102.661894][ T5255] ? __pfx_panic+0x10/0x10 [ 102.666325][ T5255] ? show_trace_log_lvl+0x4e6/0x520 [ 102.671538][ T5255] __warn+0x346/0x4e0 [ 102.675535][ T5255] ? look_up_lock_class+0xdc/0x160 [ 102.680748][ T5255] report_bug+0x2b3/0x500 [ 102.685091][ T5255] ? look_up_lock_class+0xdc/0x160 [ 102.690301][ T5255] handle_bug+0x3e/0x70 [ 102.694487][ T5255] exc_invalid_op+0x1a/0x50 [ 102.699021][ T5255] asm_exc_invalid_op+0x1a/0x20 [ 102.703979][ T5255] RIP: 0010:look_up_lock_class+0xdc/0x160 [ 102.709743][ T5255] Code: 01 0f 85 80 00 00 00 c6 05 14 e0 1a 04 01 90 49 8b 16 49 8b 76 18 48 8b 8b b8 00 00 00 48 c7 c7 40 d9 ca 8b e8 b5 f6 e0 f5 90 <0f> 0b 90 90 eb 57 90 e8 c8 e4 2b f9 48 c7 c7 80 d8 ca 8b 89 de e8 [ 102.729360][ T5255] RSP: 0018:ffffc9000406f3f0 EFLAGS: 00010046 [ 102.735444][ T5255] RAX: 491243a0e2b5ca00 RBX: ffffffff92c33be0 RCX: ffff888026c8da00 [ 102.743422][ T5255] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 102.751411][ T5255] RBP: ffffc9000406f500 R08: ffffffff81587c52 R09: 1ffff110172a519a [ 102.759506][ T5255] R10: dffffc0000000000 R11: ffffed10172a519b R12: ffff88807ba29688 [ 102.767499][ T5255] R13: ffff88807ba29688 R14: ffff88807ba29688 R15: ffffffff94826e81 [ 102.775590][ T5255] ? __warn_printk+0x292/0x360 [ 102.780394][ T5255] register_lock_class+0x102/0x980 [ 102.785529][ T5255] ? __pfx_validate_chain+0x10/0x10 [ 102.790741][ T5255] ? __pfx_register_lock_class+0x10/0x10 [ 102.796398][ T5255] __lock_acquire+0xda/0x1fd0 [ 102.801362][ T5255] lock_acquire+0x1ed/0x550 [ 102.805875][ T5255] ? ext4_move_extents+0x39d/0xec0 [ 102.810999][ T5255] ? __pfx_lock_acquire+0x10/0x10 [ 102.816032][ T5255] ? __pfx___might_resched+0x10/0x10 [ 102.821350][ T5255] ? __down_write_common+0x162/0x200 [ 102.826656][ T5255] ? __pfx_inode_dio_wait+0x10/0x10 [ 102.831859][ T5255] ? __pfx___down_write_common+0x10/0x10 [ 102.837542][ T5255] ? __pfx___down_write_common+0x10/0x10 [ 102.843195][ T5255] down_write_nested+0x3d/0x50 [ 102.847982][ T5255] ? ext4_move_extents+0x39d/0xec0 [ 102.853119][ T5255] ext4_move_extents+0x39d/0xec0 [ 102.858080][ T5255] ? rcu_read_lock_any_held+0xb7/0x160 [ 102.863548][ T5255] ? __pfx_ext4_move_extents+0x10/0x10 [ 102.869020][ T5255] ext4_ioctl+0x349a/0x5590 [ 102.873532][ T5255] ? kasan_save_track+0x3f/0x80 [ 102.878398][ T5255] ? kasan_save_free_info+0x40/0x50 [ 102.883618][ T5255] ? security_file_ioctl+0x75/0xb0 [ 102.888749][ T5255] ? do_vfs_ioctl+0x1e77/0x2e50 [ 102.893607][ T5255] ? __pfx_ext4_ioctl+0x10/0x10 [ 102.898466][ T5255] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 102.903505][ T5255] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 102.909837][ T5255] ? tomoyo_path_number_perm+0x208/0x880 [ 102.915479][ T5255] ? __pfx_lock_release+0x10/0x10 [ 102.920512][ T5255] ? kfree+0x153/0x3b0 [ 102.924599][ T5255] ? tomoyo_path_number_perm+0x71a/0x880 [ 102.930239][ T5255] ? tomoyo_path_number_perm+0x208/0x880 [ 102.935877][ T5255] ? smack_log+0x123/0x540 [ 102.940315][ T5255] ? __pfx_tomoyo_path_number_perm+0x10/0x10 [ 102.946312][ T5255] ? __pfx_smack_log+0x10/0x10 [ 102.951088][ T5255] ? smk_access+0x4ab/0x4e0 [ 102.955606][ T5255] ? smk_tskacc+0x300/0x370 [ 102.960132][ T5255] ? smack_file_ioctl+0x2fa/0x3a0 [ 102.965256][ T5255] ? __pfx_smack_file_ioctl+0x10/0x10 [ 102.970639][ T5255] ? __pfx_ptrace_notify+0x10/0x10 [ 102.975760][ T5255] ? bpf_lsm_file_ioctl+0x9/0x10 [ 102.980712][ T5255] ? security_file_ioctl+0x87/0xb0 [ 102.985923][ T5255] ? __pfx_ext4_ioctl+0x10/0x10 [ 102.990781][ T5255] __se_sys_ioctl+0xfc/0x170 [ 102.995394][ T5255] do_syscall_64+0xf5/0x240 [ 102.999918][ T5255] ? clear_bhb_loop+0x35/0x90 [ 103.004607][ T5255] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 103.010515][ T5255] RIP: 0033:0x7feecfecfaa9 [ 103.015022][ T5255] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 103.034657][ T5255] RSP: 002b:00007ffedc2f98d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 103.043106][ T5255] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007feecfecfaa9 [ 103.051083][ T5255] RDX: 0000000020000080 RSI: 00000000c028660f RDI: 0000000000000004 [ 103.059057][ T5255] RBP: 0000000000000000 R08: 00007ffedc2f990c R09: 00007ffedc2f990c [ 103.067036][ T5255] R10: 00007ffedc2f990c R11: 0000000000000246 R12: 00007ffedc2f990c [ 103.075097][ T5255] R13: 0000000000000037 R14: 431bde82d7b634db R15: 00007ffedc2f9940 [ 103.083090][ T5255] [ 103.086387][ T5255] Kernel Offset: disabled [ 103.090715][ T5255] Rebooting in 86400 seconds..