./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1501724100 <...> DUID 00:04:f8:b5:8a:47:ae:09:95:3a:43:2d:d7:42:86:31:94:89 forked to background, child pid 4696 [ 33.409378][ T4697] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.419342][ T4697] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.76' (ED25519) to the list of known hosts. execve("./syz-executor1501724100", ["./syz-executor1501724100"], 0x7ffde8887220 /* 10 vars */) = 0 brk(NULL) = 0x555555ef7000 brk(0x555555ef7d00) = 0x555555ef7d00 arch_prctl(ARCH_SET_FS, 0x555555ef7380) = 0 set_tid_address(0x555555ef7650) = 5027 set_robust_list(0x555555ef7660, 24) = 0 rseq(0x555555ef7ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1501724100", 4096) = 28 getrandom("\x5f\xf6\x7b\xa4\xf5\x66\x51\x2f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555ef7d00 brk(0x555555f18d00) = 0x555555f18d00 brk(0x555555f19000) = 0x555555f19000 mprotect(0x7f705fccb000, 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, child_tidptr=0x555555ef7650) = 5028 ./strace-static-x86_64: Process 5028 attached [pid 5028] set_robust_list(0x555555ef7660, 24) = 0 [pid 5028] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5028] setsid() = 1 [pid 5028] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5028] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5028] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5028] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5028] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5028] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5028] unshare(CLONE_NEWNS) = 0 [pid 5028] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5028] unshare(CLONE_NEWIPC) = 0 [pid 5028] unshare(CLONE_NEWCGROUP) = 0 [pid 5028] unshare(CLONE_NEWUTS) = 0 [pid 5028] unshare(CLONE_SYSVSEM) = 0 [pid 5028] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "16777216", 8) = 8 [pid 5028] close(3) = 0 [pid 5028] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "536870912", 9) = 9 [pid 5028] close(3) = 0 [pid 5028] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "1024", 4) = 4 [pid 5028] close(3) = 0 [pid 5028] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "8192", 4) = 4 [pid 5028] close(3) = 0 [pid 5028] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "1024", 4) = 4 [pid 5028] close(3) = 0 [pid 5028] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "1024", 4) = 4 [pid 5028] close(3) = 0 [pid 5028] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5028] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5028] close(3) = 0 [pid 5028] getpid() = 1 [pid 5028] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4a f8 ff ff 48 89 df e8 [ 57.373267][ T5028] RSP: 0018:ffffc900039ef850 EFLAGS: 00010246 [ 57.379331][ T5028] RAX: e4b30d3dbfb13900 RBX: 0000000000000008 RCX: ffff88807cb99dc0 [ 57.387288][ T5028] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 57.395245][ T5028] RBP: ffff88801c76925a R08: ffffffff83bdbac7 R09: 1ffffffff1d3463d [ 57.403203][ T5028] R10: dffffc0000000000 R11: fffffbfff1d3463e R12: 1ffff110038ed243 [ 57.411162][ T5028] R13: ffff88801c769218 R14: ffff88801c769200 R15: ffff88801c769222 [ 57.419140][ T5028] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 57.428156][ T5028] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.434732][ T5028] CR2: 00007f705fccf130 CR3: 000000002a14a000 CR4: 00000000003506e0 [ 57.442700][ T5028] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.450659][ T5028] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.458680][ T5028] Call Trace: [ 57.461958][ T5028] [ 57.464993][ T5028] ? __die_body+0x8b/0xe0 [ 57.469349][ T5028] ? die+0xa1/0xd0 [ 57.473147][ T5028] ? do_trap+0x153/0x380 [ 57.477400][ T5028] ? gfs2_glock_nq+0x120f/0x1480 [ 57.482541][ T5028] ? do_error_trap+0x1dc/0x2c0 [ 57.487421][ T5028] ? gfs2_glock_nq+0x120f/0x1480 [ 57.492375][ T5028] ? do_int3+0x50/0x50 [ 57.496452][ T5028] ? handle_invalid_op+0x34/0x40 [ 57.501383][ T5028] ? gfs2_glock_nq+0x120f/0x1480 [ 57.506315][ T5028] ? exc_invalid_op+0x33/0x50 [ 57.510982][ T5028] ? asm_exc_invalid_op+0x1a/0x20 [ 57.515998][ T5028] ? gfs2_dump_glock+0x17f7/0x1ba0 [ 57.521134][ T5028] ? gfs2_glock_nq+0x120f/0x1480 [ 57.526101][ T5028] do_sync+0x3cc/0xec0 [ 57.530182][ T5028] ? gfs2_quota_sync+0x3c8/0x590 [ 57.535115][ T5028] ? qd_check_sync+0x3f0/0x3f0 [ 57.539889][ T5028] ? do_raw_spin_lock+0x14d/0x3a0 [ 57.544929][ T5028] ? do_raw_spin_unlock+0x13b/0x8b0 [ 57.550133][ T5028] ? qd_check_sync+0xba/0x3f0 [ 57.554816][ T5028] gfs2_quota_sync+0x3c8/0x590 [ 57.559589][ T5028] gfs2_sync_fs+0x4d/0xb0 [ 57.563908][ T5028] sync_filesystem+0xec/0x220 [ 57.568578][ T5028] generic_shutdown_super+0x72/0x2c0 [ 57.573856][ T5028] kill_block_super+0x41/0x70 [ 57.578527][ T5028] deactivate_locked_super+0xa4/0x110 [ 57.583894][ T5028] cleanup_mnt+0x426/0x4c0 [ 57.588302][ T5028] ? _raw_spin_unlock_irq+0x23/0x50 [ 57.593496][ T5028] task_work_run+0x24a/0x300 [ 57.598081][ T5028] ? kasan_quarantine_put+0xd8/0x230 [ 57.603368][ T5028] ? task_work_cancel+0x2b0/0x2b0 [ 57.608393][ T5028] ? kmem_cache_free+0x292/0x500 [ 57.613322][ T5028] ? do_exit+0xa27/0x2650 [ 57.617646][ T5028] do_exit+0xa2c/0x2650 [ 57.621794][ T5028] ? put_task_struct+0xb0/0xb0 [ 57.626552][ T5028] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 57.632524][ T5028] ? print_irqtrace_events+0x220/0x220 [ 57.637971][ T5028] ? _raw_spin_unlock_irq+0x23/0x50 [ 57.643161][ T5028] ? lockdep_hardirqs_on+0x98/0x140 [ 57.648459][ T5028] do_group_exit+0x206/0x2c0 [ 57.653062][ T5028] __x64_sys_exit_group+0x3f/0x40 [ 57.658095][ T5028] do_syscall_64+0x41/0xc0 [ 57.662504][ T5028] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 57.668587][ T5028] RIP: 0033:0x7f705fc43709 [ 57.673008][ T5028] Code: Unable to access opcode bytes at 0x7f705fc436df. [ 57.680718][ T5028] RSP: 002b:00007ffef782fca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 57.689152][ T5028] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f705fc43709 [ 57.697144][ T5028] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 57.705117][ T5028] RBP: 00007f705fcd12b0 R08: ffffffffffffffb8 R09: 000000000001268c [ 57.713083][ T5028] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f705fcd12b0 [ 57.721047][ T5028] R13: 0000000000000000 R14: 00007f705fcd2020 R15: 00007f705fc11c60 [ 57.729026][ T5028] [ 57.732033][ T5028] Modules linked in: [ 57.736069][ T5028] ---[ end trace 0000000000000000 ]--- [ 57.741543][ T5028] RIP: 0010:gfs2_glock_nq+0x120f/0x1480 [ 57.747199][ T5028] Code: 2a fe 0f b7 4d 00 48 c7 c7 20 9a 4d 8b 48 8b 74 24 30 89 da e8 e2 00 0e 07 31 ff 48 8b 74 24 10 ba 01 00 00 00 e8 11 69 ff ff <0f> 0b 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4a f8 ff ff 48 89 df e8 [ 57.767737][ T5028] RSP: 0018:ffffc900039ef850 EFLAGS: 00010246 [ 57.773867][ T5028] RAX: e4b30d3dbfb13900 RBX: 0000000000000008 RCX: ffff88807cb99dc0 [ 57.781861][ T5028] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 57.790131][ T5028] RBP: ffff88801c76925a R08: ffffffff83bdbac7 R09: 1ffffffff1d3463d [ 57.799039][ T5028] R10: dffffc0000000000 R11: fffffbfff1d3463e R12: 1ffff110038ed243 [ 57.807155][ T5028] R13: ffff88801c769218 R14: ffff88801c769200 R15: ffff88801c769222 [ 57.815246][ T5028] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 57.824228][ T5028] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.830842][ T5028] CR2: 00007f705fccf130 CR3: 000000002a14a000 CR4: 00000000003506e0 [ 57.838977][ T5028] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.847443][ T5028] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.855638][ T5028] Kernel panic - not syncing: Fatal exception [ 57.861812][ T5028] Kernel Offset: disabled [ 57.866157][ T5028] Rebooting in 86400 seconds..