[info] Using makefile-style concurrent boot in runlevel 2. [ 24.502200] audit: type=1800 audit(1541243633.265:21): pid=5498 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.533264] audit: type=1800 audit(1541243633.275:22): pid=5498 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 Warning: Permanently added '10.128.0.120' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 48.151441] WARNING: CPU: 0 PID: 5664 at drivers/media/common/videobuf2/videobuf2-core.c:1831 __vb2_queue_cancel+0x910/0xd20 [ 48.162927] Kernel panic - not syncing: panic_on_warn set ... [ 48.168803] CPU: 0 PID: 5664 Comm: syz-executor132 Not tainted 4.19.0-next-20181102+ #104 [ 48.177106] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.186446] Call Trace: [ 48.189189] dump_stack+0x244/0x39d [ 48.192815] ? dump_stack_print_info.cold.1+0x20/0x20 [ 48.198190] panic+0x2ad/0x55c [ 48.201375] ? add_taint.cold.5+0x16/0x16 [ 48.205521] ? __warn.cold.8+0x5/0x45 [ 48.209307] ? __warn+0xe8/0x1d0 [ 48.212662] ? __vb2_queue_cancel+0x910/0xd20 [ 48.217150] __warn.cold.8+0x20/0x45 [ 48.220851] ? rcu_softirq_qs+0x20/0x20 [ 48.224807] ? __vb2_queue_cancel+0x910/0xd20 [ 48.229287] report_bug+0x254/0x2d0 [ 48.232902] do_error_trap+0x11b/0x200 [ 48.236777] do_invalid_op+0x36/0x40 [ 48.240480] ? __vb2_queue_cancel+0x910/0xd20 [ 48.244979] invalid_op+0x14/0x20 [ 48.248430] RIP: 0010:__vb2_queue_cancel+0x910/0xd20 [ 48.253521] 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 10 ed 30 fc <0f> 0b 48 8b 85 70 fe ff ff 48 05 28 02 00 00 48 89 85 38 fe ff ff [ 48.272415] RSP: 0018:ffff8801b698f858 EFLAGS: 00010293 [ 48.277869] RAX: ffff8801d5ac2200 RBX: ffff8801b698fa08 RCX: ffffffff854e7468 [ 48.285128] RDX: 0000000000000000 RSI: ffffffff854e7b60 RDI: 0000000000000005 [ 48.292392] RBP: ffff8801b698fa30 R08: ffff8801d5ac2200 R09: ffffed00396f8cee [ 48.299878] R10: ffffed00396f8cee R11: ffff8801cb7c6777 R12: ffff8801cb7c6774 [ 48.307308] R13: dffffc0000000000 R14: 0000000000000002 R15: ffff8801cb7c1418 [ 48.314579] ? __vb2_queue_cancel+0x218/0xd20 [ 48.319066] ? __vb2_queue_cancel+0x910/0xd20 [ 48.323561] ? __vb2_queue_cancel+0x910/0xd20 [ 48.328053] ? lock_downgrade+0x900/0x900 [ 48.332186] ? debug_mutex_lock_common+0x130/0x130 [ 48.337102] ? vb2_buffer_done+0xb80/0xb80 [ 48.341475] ? kasan_check_read+0x11/0x20 [ 48.345638] ? do_raw_spin_unlock+0xa7/0x330 [ 48.350043] ? do_raw_spin_trylock+0x270/0x270 [ 48.354639] ? kasan_check_write+0x14/0x20 [ 48.358934] ? wake_up_q+0xb3/0x100 [ 48.362574] ? __mutex_unlock_slowpath+0x43c/0x8c0 [ 48.367501] ? kasan_check_read+0x11/0x20 [ 48.371636] ? wait_for_completion+0x8a0/0x8a0 [ 48.376202] ? trace_hardirqs_off_caller+0x300/0x300 [ 48.381298] vb2_core_streamoff+0x60/0x140 [ 48.385529] __vb2_cleanup_fileio+0x73/0x160 [ 48.389937] vb2_core_queue_release+0x1e/0x80 [ 48.394472] _vb2_fop_release+0x1d2/0x2b0 [ 48.398621] vb2_fop_release+0x77/0xc0 [ 48.402493] vivid_fop_release+0x18e/0x440 [ 48.406713] ? vivid_remove+0x460/0x460 [ 48.410671] v4l2_release+0x224/0x3a0 [ 48.414460] __fput+0x3bc/0xa70 [ 48.417727] ? dev_debug_store+0x140/0x140 [ 48.421943] ? get_max_files+0x20/0x20 [ 48.425823] ? trace_hardirqs_on+0xbd/0x310 [ 48.430129] ? kasan_check_read+0x11/0x20 [ 48.434264] ? task_work_run+0x1af/0x2a0 [ 48.438339] ? trace_hardirqs_off_caller+0x300/0x300 [ 48.443430] ? filp_close+0x1cd/0x250 [ 48.447223] ____fput+0x15/0x20 [ 48.450490] task_work_run+0x1e8/0x2a0 [ 48.454365] ? task_work_cancel+0x240/0x240 [ 48.458671] ? copy_fd_bitmaps+0x210/0x210 [ 48.462946] ? do_syscall_64+0x9a/0x820 [ 48.466916] exit_to_usermode_loop+0x318/0x380 [ 48.471499] ? __bpf_trace_sys_exit+0x30/0x30 [ 48.475995] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.481525] do_syscall_64+0x6be/0x820 [ 48.485397] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 48.490743] ? syscall_return_slowpath+0x5e0/0x5e0 [ 48.495658] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.500489] ? trace_hardirqs_on_caller+0x310/0x310 [ 48.505625] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 48.510652] ? prepare_exit_to_usermode+0x291/0x3b0 [ 48.515670] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.520513] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.525692] RIP: 0033:0x400ef0 [ 48.528874] 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 [ 48.547759] RSP: 002b:00007ffc9d6d04c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 48.555448] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000400ef0 [ 48.562706] RDX: 000000002000019d RSI: 0000000020000100 RDI: 0000000000000003 [ 48.570073] RBP: 0000000000000000 R08: 0000000000b76880 R09: 00000000004002e0 [ 48.577329] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401e00 [ 48.584582] R13: 0000000000401e90 R14: 0000000000000000 R15: 0000000000000000 [ 48.593245] Kernel Offset: disabled [ 48.596927] Rebooting in 86400 seconds..