./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor40104258 <...> Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. execve("./syz-executor40104258", ["./syz-executor40104258"], 0x7ffe7837e680 /* 10 vars */) = 0 brk(NULL) = 0x555556463000 brk(0x555556463c40) = 0x555556463c40 arch_prctl(ARCH_SET_FS, 0x555556463300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor40104258", 4096) = 26 brk(0x555556484c40) = 0x555556484c40 brk(0x555556485000) = 0x555556485000 mprotect(0x7f0c4d2ba000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5007 attached , child_tidptr=0x5555564635d0) = 5007 [pid 5007] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5007] setsid() = 1 [pid 5007] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5007] unshare(CLONE_NEWNS) = 0 [pid 5007] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5007] unshare(CLONE_NEWIPC) = 0 [pid 5007] unshare(CLONE_NEWCGROUP) = 0 [pid 5007] unshare(CLONE_NEWUTS) = 0 [pid 5007] unshare(CLONE_SYSVSEM) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "16777216", 8) = 8 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "536870912", 9) = 9 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "8192", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5007] close(3) = 0 [pid 5007] getpid() = 1 [pid 5007] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 3c 02 00 0f 85 37 18 00 00 48 8b 5b 28 48 63 c5 48 8d 44 40 03 [ 81.518148][ T5007] RSP: 0018:ffffc900039af400 EFLAGS: 00010206 [ 81.524227][ T5007] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 81.532208][ T5007] RDX: 0000000000000005 RSI: ffffffff822174af RDI: 0000000000000028 [ 81.540201][ T5007] RBP: 0000000000000000 R08: ffffc900039af608 R09: ffffc900039af5f8 [ 81.548186][ T5007] R10: 00000000fffffffe R11: 0000000000000001 R12: ffffc900039af5f8 [ 81.556167][ T5007] R13: ffff888074990190 R14: 1ffff92000735f57 R15: ffffc900039af608 [ 81.564153][ T5007] FS: 0000555556463300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 81.573100][ T5007] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.579708][ T5007] CR2: 000055f22e64fb50 CR3: 00000000751e7000 CR4: 00000000003506e0 [ 81.587692][ T5007] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.595688][ T5007] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.603666][ T5007] Call Trace: [ 81.606969][ T5007] [ 81.609911][ T5007] ? search_by_key+0x3b60/0x3b60 [ 81.614867][ T5007] ? reiserfs_unmap_buffer+0x4a0/0x4a0 [ 81.620431][ T5007] ? comp_items+0x1d0/0x1d0 [ 81.624956][ T5007] ? __lockdep_reset_lock+0x1a0/0x1a0 [ 81.630368][ T5007] ? lock_release+0x4fb/0x670 [ 81.635079][ T5007] ? mark_lock.part.0+0xee/0x1970 [ 81.640142][ T5007] reiserfs_cut_from_item+0x260/0x1b20 [ 81.645739][ T5007] ? reiserfs_delete_solid_item+0xbe0/0xbe0 [ 81.651665][ T5007] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.657703][ T5007] ? __mutex_unlock_slowpath+0x157/0x5e0 [ 81.663378][ T5007] ? wait_for_completion_io_timeout+0x20/0x20 [ 81.669467][ T5007] ? wait_for_completion_io_timeout+0x20/0x20 [ 81.675559][ T5007] ? filemap_get_entry+0x203/0x430 [ 81.680695][ T5007] ? make_cpu_key+0x26/0x2a0 [ 81.685304][ T5007] reiserfs_do_truncate+0x630/0x1080 [ 81.690612][ T5007] ? reiserfs_cut_from_item+0x1b20/0x1b20 [ 81.696355][ T5007] ? do_journal_begin_r+0xd4d/0x10e0 [ 81.701672][ T5007] reiserfs_truncate_file+0x1b5/0x1070 [ 81.707156][ T5007] ? reiserfs_write_inode+0x2d0/0x2d0 [ 81.712655][ T5007] ? __mutex_lock+0x231/0x1350 [ 81.717463][ T5007] ? find_held_lock+0x2d/0x110 [ 81.722257][ T5007] reiserfs_file_release+0x8a1/0xcb0 [ 81.727580][ T5007] ? reiserfs_sync_file+0x320/0x320 [ 81.732802][ T5007] ? ima_file_free+0x1b1/0x420 [ 81.737597][ T5007] __fput+0x27c/0xa90 [ 81.741597][ T5007] ? reiserfs_sync_file+0x320/0x320 [ 81.746837][ T5007] task_work_run+0x16f/0x270 [ 81.751442][ T5007] ? task_work_cancel+0x30/0x30 [ 81.756324][ T5007] ptrace_notify+0x118/0x140 [ 81.760970][ T5007] syscall_exit_to_user_mode_prepare+0x129/0x220 [ 81.767602][ T5007] syscall_exit_to_user_mode+0xd/0x50 [ 81.773181][ T5007] do_syscall_64+0x46/0xb0 [ 81.777636][ T5007] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 81.783546][ T5007] RIP: 0033:0x7f0c4d20a2f3 [ 81.787982][ T5007] Code: c7 c2 c0 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb ba 0f 1f 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 [ 81.807787][ T5007] RSP: 002b:00007fffee183e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 81.816311][ T5007] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f0c4d20a2f3 [ 81.824379][ T5007] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 81.832359][ T5007] RBP: 00007fffee183e18 R08: 0000000000000000 R09: 0000000000000000 [ 81.840339][ T5007] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffee183e20 [ 81.848317][ T5007] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 81.856304][ T5007] [ 81.859334][ T5007] Modules linked in: [ 81.863948][ T5007] ---[ end trace 0000000000000000 ]--- [ 81.869507][ T5007] RIP: 0010:prepare_for_delete_or_cut+0x129/0x1a00 [ 81.876401][ T5007] Code: da 8b 6b 08 48 c1 ea 03 80 3c 02 00 0f 85 77 18 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 1b 48 8d 7b 28 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 37 18 00 00 48 8b 5b 28 48 63 c5 48 8d 44 40 03 [ 81.896123][ T5007] RSP: 0018:ffffc900039af400 EFLAGS: 00010206 [ 81.902237][ T5007] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 81.910275][ T5007] RDX: 0000000000000005 RSI: ffffffff822174af RDI: 0000000000000028 [ 81.918370][ T5007] RBP: 0000000000000000 R08: ffffc900039af608 R09: ffffc900039af5f8 [ 81.926408][ T5007] R10: 00000000fffffffe R11: 0000000000000001 R12: ffffc900039af5f8 [ 81.934408][ T5007] R13: ffff888074990190 R14: 1ffff92000735f57 R15: ffffc900039af608 [ 81.942779][ T5007] FS: 0000555556463300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 81.951781][ T5007] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.958517][ T5007] CR2: 000055f22e64fb50 CR3: 00000000751e7000 CR4: 00000000003506e0 [ 81.966586][ T5007] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.974609][ T5007] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.982671][ T5007] Kernel panic - not syncing: Fatal exception [ 81.989055][ T5007] Kernel Offset: disabled [ 81.993393][ T5007] Rebooting in 86400 seconds..