[info] Using makefile-style concurrent boot in runlevel 2. [ 23.499242] audit: type=1800 audit(1541268949.707:21): pid=5493 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 23.528793] audit: type=1800 audit(1541268949.717:22): pid=5493 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 39.487361] sshd (5635) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.10.4' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 45.921900] WARNING: CPU: 0 PID: 5659 at drivers/media/common/videobuf2/videobuf2-core.c:1831 __vb2_queue_cancel+0x910/0xd20 [ 45.933392] Kernel panic - not syncing: panic_on_warn set ... [ 45.939266] CPU: 0 PID: 5659 Comm: syz-executor453 Not tainted 4.19.0+ #317 [ 45.946349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.955757] Call Trace: [ 45.958348] dump_stack+0x244/0x39d [ 45.961977] ? dump_stack_print_info.cold.1+0x20/0x20 [ 45.967278] panic+0x2ad/0x55c [ 45.970462] ? add_taint.cold.5+0x16/0x16 [ 45.974599] ? __warn.cold.8+0x5/0x45 [ 45.978386] ? __warn+0xe8/0x1d0 [ 45.981741] ? __vb2_queue_cancel+0x910/0xd20 [ 45.986234] __warn.cold.8+0x20/0x45 [ 45.989934] ? rcu_softirq_qs+0x20/0x20 [ 45.993922] ? __vb2_queue_cancel+0x910/0xd20 [ 45.998428] report_bug+0x254/0x2d0 [ 46.002062] do_error_trap+0x11b/0x200 [ 46.005945] do_invalid_op+0x36/0x40 [ 46.009655] ? __vb2_queue_cancel+0x910/0xd20 [ 46.014161] invalid_op+0x14/0x20 [ 46.017661] RIP: 0010:__vb2_queue_cancel+0x910/0xd20 [ 46.022772] Code: 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 d8 03 00 00 48 81 c4 b0 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f0 c9 32 fc <0f> 0b 48 8b 85 70 fe ff ff 48 05 28 02 00 00 48 89 85 38 fe ff ff [ 46.041823] RSP: 0018:ffff8801c4d1f860 EFLAGS: 00010293 [ 46.047199] RAX: ffff8801d7fd4580 RBX: ffff8801c4d1fa10 RCX: ffffffff854ca708 [ 46.054510] RDX: 0000000000000000 RSI: ffffffff854cae00 RDI: 0000000000000005 [ 46.061778] RBP: ffff8801c4d1fa38 R08: ffff8801d7fd4580 R09: ffffed00396d0cee [ 46.069038] R10: ffffed00396d0cee R11: ffff8801cb686777 R12: ffff8801cb686774 [ 46.076293] R13: dffffc0000000000 R14: 0000000000000002 R15: ffff8801cb681418 [ 46.083566] ? __vb2_queue_cancel+0x218/0xd20 [ 46.088049] ? __vb2_queue_cancel+0x910/0xd20 [ 46.092538] ? lock_downgrade+0x900/0x900 [ 46.096674] ? debug_mutex_lock_common+0x130/0x130 [ 46.101598] ? vb2_buffer_done+0xb90/0xb90 [ 46.105828] ? kasan_check_read+0x11/0x20 [ 46.109958] ? do_raw_spin_unlock+0xa7/0x330 [ 46.114352] ? do_raw_spin_trylock+0x270/0x270 [ 46.118924] ? kasan_check_write+0x14/0x20 [ 46.123142] ? wake_up_q+0xb3/0x100 [ 46.126757] ? __mutex_unlock_slowpath+0x43c/0x8c0 [ 46.131670] ? kasan_check_read+0x11/0x20 [ 46.135801] ? wait_for_completion+0x8a0/0x8a0 [ 46.140369] ? trace_hardirqs_off_caller+0x310/0x310 [ 46.145456] ? vfs_lock_file+0xe0/0xe0 [ 46.149341] vb2_core_streamoff+0x60/0x140 [ 46.153574] __vb2_cleanup_fileio+0x73/0x160 [ 46.157969] vb2_core_queue_release+0x1e/0x80 [ 46.162450] _vb2_fop_release+0x1d2/0x2b0 [ 46.166585] vb2_fop_release+0x77/0xc0 [ 46.170468] vivid_fop_release+0x18e/0x440 [ 46.174700] ? vivid_remove+0x460/0x460 [ 46.178656] v4l2_release+0x224/0x3a0 [ 46.182445] ? dev_debug_store+0x140/0x140 [ 46.186666] __fput+0x385/0xa30 [ 46.189934] ? get_max_files+0x20/0x20 [ 46.193807] ? trace_hardirqs_on+0xbd/0x310 [ 46.198114] ? kasan_check_read+0x11/0x20 [ 46.202388] ? task_work_run+0x1af/0x2a0 [ 46.206446] ? trace_hardirqs_off_caller+0x310/0x310 [ 46.211545] ? filp_close+0x1cd/0x250 [ 46.215343] ____fput+0x15/0x20 [ 46.218622] task_work_run+0x1e8/0x2a0 [ 46.222501] ? task_work_cancel+0x240/0x240 [ 46.226812] ? copy_fd_bitmaps+0x210/0x210 [ 46.231036] ? do_syscall_64+0x9a/0x820 [ 46.235004] exit_to_usermode_loop+0x318/0x380 [ 46.239575] ? __bpf_trace_sys_exit+0x30/0x30 [ 46.244058] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.249585] do_syscall_64+0x6be/0x820 [ 46.253461] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 46.258814] ? syscall_return_slowpath+0x5e0/0x5e0 [ 46.263733] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.268560] ? trace_hardirqs_on_caller+0x310/0x310 [ 46.273562] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 46.278562] ? prepare_exit_to_usermode+0x291/0x3b0 [ 46.283569] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.288401] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.293576] RIP: 0033:0x400ef0 [ 46.296755] Code: 01 f0 ff ff 0f 83 b0 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d dd 57 2d 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 84 0a 00 00 c3 48 83 ec 08 e8 3a 01 00 00 [ 46.315640] RSP: 002b:00007ffc4f9401f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 46.323333] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000400ef0 [ 46.330587] RDX: 000000002000019d RSI: 0000000020000100 RDI: 0000000000000003 [ 46.337843] RBP: 0000000000000000 R08: 0000000001223880 R09: 00000000004002e0 [ 46.345107] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401e00 [ 46.352365] R13: 0000000000401e90 R14: 0000000000000000 R15: 0000000000000000 [ 46.361039] Kernel Offset: disabled [ 46.364773] Rebooting in 86400 seconds..