[info] Using makefile-style concurrent boot in runlevel 2. [ 23.729556] audit: type=1800 audit(1541368142.644:21): pid=5466 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 23.753516] audit: type=1800 audit(1541368142.644:22): pid=5466 uid=0 auid=4294967295 ses=4294967295 subj=_ 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: [ 116.129671] sshd (5608) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.76' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program [ 122.633880] WARNING: CPU: 0 PID: 5630 at drivers/media/common/videobuf2/videobuf2-core.c:1831 __vb2_queue_cancel+0x910/0xd20 [ 122.645453] Kernel panic - not syncing: panic_on_warn set ... [ 122.651339] CPU: 0 PID: 5630 Comm: syz-executor770 Not tainted 4.19.0+ #97 [ 122.658340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 122.667686] Call Trace: [ 122.670266] dump_stack+0x244/0x39d [ 122.673885] ? dump_stack_print_info.cold.1+0x20/0x20 [ 122.679072] panic+0x2ad/0x55c [ 122.682253] ? add_taint.cold.5+0x16/0x16 [ 122.686401] ? __warn.cold.8+0x5/0x45 [ 122.690212] ? __warn+0xe8/0x1d0 [ 122.693585] ? __vb2_queue_cancel+0x910/0xd20 [ 122.698079] __warn.cold.8+0x20/0x45 [ 122.701790] ? rcu_softirq_qs+0x20/0x20 [ 122.705759] ? __vb2_queue_cancel+0x910/0xd20 [ 122.710249] report_bug+0x254/0x2d0 [ 122.713872] do_error_trap+0x11b/0x200 [ 122.717763] do_invalid_op+0x36/0x40 [ 122.721479] ? __vb2_queue_cancel+0x910/0xd20 [ 122.725977] invalid_op+0x14/0x20 [ 122.729420] RIP: 0010:__vb2_queue_cancel+0x910/0xd20 [ 122.734511] 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 40 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 [ 122.753420] RSP: 0000:ffff8801ba937860 EFLAGS: 00010293 [ 122.758769] RAX: ffff8801d400a3c0 RBX: ffff8801ba937a10 RCX: ffffffff854cba88 [ 122.766022] RDX: 0000000000000000 RSI: ffffffff854cc180 RDI: 0000000000000005 [ 122.773275] RBP: ffff8801ba937a38 R08: ffff8801d400a3c0 R09: ffffed003967acee [ 122.780532] R10: ffffed003967acee R11: ffff8801cb3d6777 R12: ffff8801cb3d6774 [ 122.787787] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8801cb3d1418 [ 122.795065] ? __vb2_queue_cancel+0x218/0xd20 [ 122.799558] ? __vb2_queue_cancel+0x910/0xd20 [ 122.804057] ? lock_downgrade+0x900/0x900 [ 122.808193] ? debug_mutex_lock_common+0x130/0x130 [ 122.813120] ? vb2_buffer_done+0xb90/0xb90 [ 122.817358] ? kasan_check_read+0x11/0x20 [ 122.821503] ? do_raw_spin_unlock+0xa7/0x330 [ 122.825899] ? do_raw_spin_trylock+0x270/0x270 [ 122.830477] ? kasan_check_write+0x14/0x20 [ 122.834700] ? wake_up_q+0xb3/0x100 [ 122.838319] ? __mutex_unlock_slowpath+0x43c/0x8c0 [ 122.843238] ? kasan_check_read+0x11/0x20 [ 122.847376] ? wait_for_completion+0x8a0/0x8a0 [ 122.851957] ? trace_hardirqs_off_caller+0x310/0x310 [ 122.857053] ? vfs_lock_file+0xe0/0xe0 [ 122.860932] vb2_core_streamoff+0x60/0x140 [ 122.865170] __vb2_cleanup_fileio+0x73/0x160 [ 122.869573] vb2_core_queue_release+0x1e/0x80 [ 122.874056] _vb2_fop_release+0x1d2/0x2b0 [ 122.878196] vb2_fop_release+0x77/0xc0 [ 122.882078] vivid_fop_release+0x18e/0x440 [ 122.886317] ? vivid_remove+0x460/0x460 [ 122.890281] v4l2_release+0x224/0x3a0 [ 122.894100] ? dev_debug_store+0x140/0x140 [ 122.898324] __fput+0x385/0xa30 [ 122.901597] ? get_max_files+0x20/0x20 [ 122.905473] ? trace_hardirqs_on+0xbd/0x310 [ 122.909783] ? kasan_check_read+0x11/0x20 [ 122.913920] ? task_work_run+0x1af/0x2a0 [ 122.917977] ? trace_hardirqs_off_caller+0x310/0x310 [ 122.923073] ? filp_close+0x1cd/0x250 [ 122.926866] ____fput+0x15/0x20 [ 122.930136] task_work_run+0x1e8/0x2a0 [ 122.934013] ? task_work_cancel+0x240/0x240 [ 122.938324] ? copy_fd_bitmaps+0x210/0x210 [ 122.942567] ? do_syscall_64+0x9a/0x820 [ 122.946543] exit_to_usermode_loop+0x318/0x380 [ 122.951650] ? __bpf_trace_sys_exit+0x30/0x30 [ 122.956141] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 122.961671] do_syscall_64+0x6be/0x820 [ 122.965553] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 122.970908] ? syscall_return_slowpath+0x5e0/0x5e0 [ 122.975831] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 122.980668] ? trace_hardirqs_on_caller+0x310/0x310 [ 122.985678] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 122.990694] ? prepare_exit_to_usermode+0x291/0x3b0 [ 122.995727] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 123.000567] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 123.005750] RIP: 0033:0x400ef0 [ 123.008940] 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 [ 123.027828] RSP: 002b:00007ffede4f44a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 123.035525] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000400ef0 [ 123.042786] RDX: 000000002000019d RSI: 0000000020000100 RDI: 0000000000000003 [ 123.050045] RBP: 0000000000000000 R08: 000000000126e880 R09: 00000000004002e0 [ 123.057305] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401e00 [ 123.064808] R13: 0000000000401e90 R14: 0000000000000000 R15: 0000000000000000 [ 123.073489] Kernel Offset: disabled [ 123.077169] Rebooting in 86400 seconds..