./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3972712434 <...> [ 6.142193][ T24] audit: type=1400 audit(1755903118.610:58): avc: denied { read } for pid=187 comm="getty" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:getty_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 syzkaller syzkaller login: [ 14.106036][ T24] audit: type=1400 audit(1755903126.600:59): avc: denied { transition } for pid=217 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.113914][ T24] audit: type=1400 audit(1755903126.610:60): avc: denied { noatsecure } for pid=217 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.122005][ T24] audit: type=1400 audit(1755903126.610:61): avc: denied { write } for pid=217 comm="sh" path="pipe:[13032]" dev="pipefs" ino=13032 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 14.137768][ T24] audit: type=1400 audit(1755903126.610:62): avc: denied { rlimitinh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.157201][ T24] audit: type=1400 audit(1755903126.610:63): avc: denied { siginh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.46' (ED25519) to the list of known hosts. execve("./syz-executor3972712434", ["./syz-executor3972712434"], 0x7ffd6d69a590 /* 10 vars */) = 0 brk(NULL) = 0x555590277000 brk(0x555590277d00) = 0x555590277d00 arch_prctl(ARCH_SET_FS, 0x555590277380) = 0 set_tid_address(0x555590277650) = 282 set_robust_list(0x555590277660, 24) = 0 rseq(0x555590277ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3972712434", 4096) = 28 getrandom("\x3e\x9e\x38\xa3\x59\x09\x71\x59", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555590277d00 brk(0x555590298d00) = 0x555590298d00 brk(0x555590299000) = 0x555590299000 mprotect(0x7fa7e785a000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555590277650) = 283 ./strace-static-x86_64: Process 283 attached [pid 283] set_robust_list(0x555590277660, 24) = 0 [pid 283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 283] getppid() = 0 [pid 283] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 283] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 283] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 283] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 283] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 283] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 283] unshare(CLONE_NEWNS) = 0 [pid 283] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 283] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 283] unshare(CLONE_NEWCGROUP) = 0 [pid 283] unshare(CLONE_NEWUTS) = 0 [pid 283] unshare(CLONE_SYSVSEM) = 0 [pid 283] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 283] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 283] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 283] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 283] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 283] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 283] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 283] getpid() = 1 [pid 283] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<ffff888121685e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 24.294560][ T49] ^ [ 24.300691][ T49] ffff888121685f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 24.308919][ T49] ffff888121685f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 24.317067][ T49] ================================================================== [ 24.325112][ T49] Disabling lock debugging due to kernel taint [ 24.331554][ T49] EXT4-fs error (device loop0): ext4_map_blocks:740: inode #15: block 1: comm kworker/u4:2: lblock 1 mapped to illegal pblock 1 (length 3) [ 24.346243][ T49] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 1 with max blocks 3 with error 117 [ 24.358519][ T49] EXT4-fs (loop0): This should not happen!! Data will be lost [ 24.358519][ T49] [ 24.368401][ T49] EXT4-fs error (device loop0): __ext4_get_inode_loc:4438: comm kworker/u4:2: Invalid inode table block 8391460049216894068 in block_group 0 [ 24.383472][ T49] EXT4-fs error (device loop0): ext4_map_blocks:740: inode #15: block 16: comm kworker/u4:2: lblock 16 mapped to illegal pblock 16 (length 1) [ 24.398314][ T49] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 16 with max blocks 1 with error 117 [ 24.410663][ T49] EXT4-fs (loop0): This should not happen!! Data will be lost [ 24.410663][ T49] [pid 283] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=283, si_uid=0, si_status=1, si_utime=0, si_stime=11} --- exit_group(0) = ? +++ exited with 0 +++