./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4216045285 <...> DUID 00:04:e6:d8:3e:4c:c1:15:84:42:dc:00:60:8c:e3:5f:26:b4 forked to background, child pid 3211 [ 29.214021][ T3212] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.224590][ T3212] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. execve("./syz-executor4216045285", ["./syz-executor4216045285"], 0x7ffc7284cf40 /* 10 vars */) = 0 brk(NULL) = 0x5555571f9000 brk(0x5555571f9c40) = 0x5555571f9c40 arch_prctl(ARCH_SET_FS, 0x5555571f9300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4216045285", 4096) = 28 brk(0x55555721ac40) = 0x55555721ac40 brk(0x55555721b000) = 0x55555721b000 mprotect(0x7f4122345000, 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 3633 attached , child_tidptr=0x5555571f95d0) = 3633 [pid 3633] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3633] setsid() = 1 [pid 3633] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3633] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3633] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3633] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3633] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 3633] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3633] unshare(CLONE_NEWNS) = 0 [pid 3633] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3633] unshare(CLONE_NEWIPC) = 0 [pid 3633] unshare(CLONE_NEWCGROUP) = 0 [pid 3633] unshare(CLONE_NEWUTS) = 0 [pid 3633] unshare(CLONE_SYSVSEM) = 0 [pid 3633] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3633] write(3, "16777216", 8) = 8 [pid 3633] close(3) = 0 [pid 3633] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3633] write(3, "536870912", 9) = 9 [pid 3633] close(3) = 0 [pid 3633] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3633] write(3, "1024", 4) = 4 [pid 3633] close(3) = 0 [pid 3633] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3633] write(3, "8192", 4) = 4 [pid 3633] close(3) = 0 [pid 3633] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3633] write(3, "1024", 4) = 4 [pid 3633] close(3) = 0 [pid 3633] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3633] write(3, "1024", 4) = 4 [pid 3633] close(3) = 0 [pid 3633] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3633] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3633] close(3) = 0 [pid 3633] getpid() = 1 [pid 3633] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 89 d9 80 e1 07 fe c1 38 c1 0f 8c 94 ee ff ff 48 89 df e8 06 [ 63.455432][ T3633] RSP: 0018:ffffc90003a9f898 EFLAGS: 00010246 [ 63.461478][ T3633] RAX: 66a04389b2839d00 RBX: 0000000000000008 RCX: ffff888022fb3a80 [ 63.469433][ T3633] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 63.477393][ T3633] RBP: ffff88801e76445a R08: ffffffff83b50c42 R09: fffffbfff1cebe0e [ 63.485343][ T3633] R10: fffffbfff1cebe0e R11: 1ffffffff1cebe0d R12: ffff88801e764438 [ 63.493298][ T3633] R13: ffff88804a4cf280 R14: ffff88801e764430 R15: 1ffff11003cec883 [ 63.501272][ T3633] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 63.510206][ T3633] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.516818][ T3633] CR2: 00007ffc0f982338 CR3: 0000000022f6f000 CR4: 00000000003506e0 [ 63.524790][ T3633] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.532758][ T3633] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.540734][ T3633] Call Trace: [ 63.544028][ T3633] [ 63.546961][ T3633] do_sync+0x3b1/0xc80 [ 63.551029][ T3633] ? gfs2_quota_sync+0x3da/0x8b0 [ 63.555964][ T3633] ? slot_put+0x1f0/0x1f0 [ 63.560288][ T3633] ? do_raw_spin_lock+0x148/0x360 [ 63.565306][ T3633] ? __lock_acquire+0x1f60/0x1f60 [ 63.570504][ T3633] ? do_raw_spin_unlock+0x134/0x8a0 [ 63.575705][ T3633] ? qd_check_sync+0xba/0x3f0 [ 63.580400][ T3633] gfs2_quota_sync+0x3da/0x8b0 [ 63.585183][ T3633] gfs2_sync_fs+0x49/0xb0 [ 63.589519][ T3633] sync_filesystem+0xe8/0x220 [ 63.594214][ T3633] generic_shutdown_super+0x6b/0x310 [ 63.599517][ T3633] kill_block_super+0x79/0xd0 [ 63.604197][ T3633] deactivate_locked_super+0xa7/0xf0 [ 63.609475][ T3633] cleanup_mnt+0x494/0x520 [ 63.613890][ T3633] ? lockdep_hardirqs_on+0x8d/0x130 [ 63.619085][ T3633] task_work_run+0x243/0x300 [ 63.623676][ T3633] ? task_work_cancel+0x290/0x290 [ 63.628703][ T3633] ? do_exit+0x65f/0x2070 [ 63.633033][ T3633] do_exit+0x664/0x2070 [ 63.637186][ T3633] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 63.643159][ T3633] ? mm_update_next_owner+0x6d0/0x6d0 [ 63.648528][ T3633] ? print_irqtrace_events+0x220/0x220 [ 63.653979][ T3633] ? _raw_spin_unlock_irq+0x1f/0x40 [ 63.659170][ T3633] ? lockdep_hardirqs_on+0x8d/0x130 [ 63.664358][ T3633] do_group_exit+0x1fd/0x2b0 [ 63.668945][ T3633] __x64_sys_exit_group+0x3b/0x40 [ 63.673965][ T3633] do_syscall_64+0x3d/0xb0 [ 63.678372][ T3633] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 63.684256][ T3633] RIP: 0033:0x7f41222c2979 [ 63.688661][ T3633] Code: Unable to access opcode bytes at 0x7f41222c294f. [ 63.695660][ T3633] RSP: 002b:00007fff635fe498 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 63.704064][ T3633] RAX: ffffffffffffffda RBX: 00007f412234b330 RCX: 00007f41222c2979 [ 63.712023][ T3633] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 63.719979][ T3633] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000000134ba [ 63.727951][ T3633] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f412234b330 [ 63.735923][ T3633] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 63.743891][ T3633] [ 63.746918][ T3633] Modules linked in: [ 63.750923][ T3633] ---[ end trace 0000000000000000 ]--- [ 63.756400][ T3633] RIP: 0010:gfs2_glock_nq+0x1661/0x1890 [ 63.761968][ T3633] Code: 0f b7 4d 00 48 c7 c7 00 31 3c 8b 48 8b 74 24 20 89 da 31 c0 e8 9c c2 da 06 31 ff 48 8b 74 24 28 ba 01 00 00 00 e8 6f 7b ff ff <0f> 0b 89 d9 80 e1 07 fe c1 38 c1 0f 8c 94 ee ff ff 48 89 df e8 06 [ 63.781607][ T3633] RSP: 0018:ffffc90003a9f898 EFLAGS: 00010246 [ 63.787681][ T3633] RAX: 66a04389b2839d00 RBX: 0000000000000008 RCX: ffff888022fb3a80 [ 63.795664][ T3633] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 63.803645][ T3633] RBP: ffff88801e76445a R08: ffffffff83b50c42 R09: fffffbfff1cebe0e [ 63.811599][ T3633] R10: fffffbfff1cebe0e R11: 1ffffffff1cebe0d R12: ffff88801e764438 [ 63.819584][ T3633] R13: ffff88804a4cf280 R14: ffff88801e764430 R15: 1ffff11003cec883 [ 63.827565][ T3633] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 63.836527][ T3633] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.843108][ T3633] CR2: 00007ffc0f982338 CR3: 0000000022f6f000 CR4: 00000000003506e0 [ 63.851098][ T3633] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.859083][ T3633] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.867083][ T3633] Kernel panic - not syncing: Fatal exception [ 63.873305][ T3633] Kernel Offset: disabled [ 63.877621][ T3633] Rebooting in 86400 seconds..