./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2837902185 <...> Warning: Permanently added '10.128.1.59' (ED25519) to the list of known hosts. execve("./syz-executor2837902185", ["./syz-executor2837902185"], 0x7fffb2b6e060 /* 10 vars */) = 0 brk(NULL) = 0x555555693000 brk(0x555555693e00) = 0x555555693e00 arch_prctl(ARCH_SET_FS, 0x555555693480) = 0 set_tid_address(0x555555693750) = 355 set_robust_list(0x555555693760, 24) = 0 rseq(0x555555693da0, 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-executor2837902185", 4096) = 28 getrandom("\x8f\x04\xee\x13\x8c\x8b\x93\x1c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555693e00 brk(0x5555556b4e00) = 0x5555556b4e00 brk(0x5555556b5000) = 0x5555556b5000 mprotect(0x7f1d6cfaa000, 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=0x7f1d6cf00b60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f1d6cf091d0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f1d6cf00b60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f1d6cf091d0}, NULL, 8) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555693750) = 356 ./strace-static-x86_64: Process 356 attached [pid 356] set_robust_list(0x555555693760, 24) = 0 [pid 356] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 356] setsid() = 1 [pid 356] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 356] unshare(CLONE_NEWNS) = 0 [pid 356] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 356] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 356] unshare(CLONE_NEWCGROUP) = 0 [pid 356] unshare(CLONE_NEWUTS) = 0 [pid 356] unshare(CLONE_SYSVSEM) = 0 [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] getpid() = 1 [pid 356] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e8 08 e0 ba ff 0f 0b e8 01 e0 ba ff 0f 0b e8 fa df ba ff 0f [ 23.335471][ T360] RSP: 0018:ffff8881dcabfbf0 EFLAGS: 00010293 [ 23.341375][ T360] RAX: ffffffff81a96361 RBX: 0000000000000000 RCX: ffff8881dcfcaf40 [ 23.349182][ T360] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.356995][ T360] RBP: 0000000000003800 R08: ffffffff81a95bd4 R09: ffffed103d0f5727 [ 23.364808][ T360] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 23.372617][ T360] R13: ffff8881e87ab930 R14: 0000000000000001 R15: 0000000000000000 [ 23.380433][ T360] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.389196][ T360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.395615][ T360] CR2: 000055b916e6ca48 CR3: 00000001ecd7d000 CR4: 00000000003406b0 [ 23.403428][ T360] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.411243][ T360] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.419049][ T360] Call Trace: [ 23.422186][ T360] ? __die+0xb4/0x100 [ 23.426039][ T360] ? die+0x26/0x50 [ 23.429563][ T360] ? do_trap+0x1e7/0x340 [ 23.433666][ T360] ? submit_bh_wbc+0x831/0x850 [ 23.438236][ T360] ? submit_bh_wbc+0x831/0x850 [ 23.442835][ T360] ? do_invalid_op+0xfb/0x110 [ 23.447349][ T360] ? submit_bh_wbc+0x831/0x850 [ 23.451950][ T360] ? invalid_op+0x1e/0x30 [ 23.456116][ T360] ? submit_bh_wbc+0xa4/0x850 [ 23.460627][ T360] ? submit_bh_wbc+0x831/0x850 [ 23.465315][ T360] ? submit_bh_wbc+0x831/0x850 [ 23.469915][ T360] ? debug_smp_processor_id+0x20/0x20 [ 23.475124][ T360] submit_bh+0x21/0x30 [ 23.479029][ T360] write_mmp_block+0x3ff/0x5b0 [ 23.483631][ T360] ? console_conditional_schedule+0x10/0x10 [ 23.489380][ T360] ? read_mmp_block+0x8a0/0x8a0 [ 23.494047][ T360] kmmpd+0x7de/0xa10 [ 23.497779][ T360] ? write_mmp_block+0x5b0/0x5b0 [ 23.502554][ T360] ? __wake_up_locked+0xb7/0x110 [ 23.507325][ T360] ? __kthread_parkme+0xb0/0x1b0 [ 23.512096][ T360] kthread+0x2da/0x360 [ 23.516003][ T360] ? write_mmp_block+0x5b0/0x5b0 [ 23.520774][ T360] ? kthread_blkcg+0xd0/0xd0 [ 23.525202][ T360] ret_from_fork+0x1f/0x30 [ 23.529452][ T360] Modules linked in: [ 23.533608][ T360] ---[ end trace 9d6eab2d8e6232d7 ]--- [ 23.538889][ T360] RIP: 0010:submit_bh_wbc+0x831/0x850 [ 23.544074][ T360] Code: 10 80 e1 07 80 c1 03 38 c1 0f 8c 14 fe ff ff 48 8b 7c 24 10 e8 a0 a1 ea ff e9 05 fe ff ff e8 16 e0 ba ff 0f 0b e8 0f e0 ba ff <0f> 0b e8 08 e0 ba ff 0f 0b e8 01 e0 ba ff 0f 0b e8 fa df ba ff 0f [ 23.563913][ T360] RSP: 0018:ffff8881dcabfbf0 EFLAGS: 00010293 [ 23.569829][ T360] RAX: ffffffff81a96361 RBX: 0000000000000000 RCX: ffff8881dcfcaf40 [ 23.577612][ T360] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.585443][ T360] RBP: 0000000000003800 R08: ffffffff81a95bd4 R09: ffffed103d0f5727 [ 23.593229][ T360] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 23.601053][ T360] R13: ffff8881e87ab930 R14: 0000000000000001 R15: 0000000000000000 [ 23.608851][ T360] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.617689][ T360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.624136][ T360] CR2: 000055b916e6ca48 CR3: 00000001ecd7d000 CR4: 00000000003406b0 [ 23.631961][ T360] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.639755][ T360] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.647544][ T360] Kernel panic - not syncing: Fatal exception [ 23.653700][ T360] Kernel Offset: disabled [ 23.657814][ T360] Rebooting in 86400 seconds..