[ 67.023829][ T26] audit: type=1800 audit(1565891986.883:27): pid=9799 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 67.044381][ T26] audit: type=1800 audit(1565891986.883:28): pid=9799 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.801002][ T26] audit: type=1800 audit(1565891987.723:29): pid=9799 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 67.821323][ T26] audit: type=1800 audit(1565891987.733:30): pid=9799 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.113' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 77.503136][ T9960] ------------[ cut here ]------------ [ 77.509136][ T9960] WARNING: CPU: 1 PID: 9960 at drivers/media/common/videobuf2/videobuf2-core.c:1882 __vb2_queue_cancel.cold+0x11/0x20f [ 77.522182][ T9960] Kernel panic - not syncing: panic_on_warn set ... [ 77.530843][ T9960] CPU: 1 PID: 9960 Comm: syz-executor446 Not tainted 5.3.0-rc4+ #129 [ 77.541492][ T9960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.559279][ T9960] Call Trace: [ 77.562773][ T9960] dump_stack+0x172/0x1f0 [ 77.567496][ T9960] ? vb2_buffer_done.cold+0x3e/0x114 [ 77.573661][ T9960] panic+0x2dc/0x755 [ 77.577771][ T9960] ? add_taint.cold+0x16/0x16 [ 77.582554][ T9960] ? __kasan_check_write+0x14/0x20 [ 77.588194][ T9960] ? __warn.cold+0x5/0x4c [ 77.593095][ T9960] ? __warn+0xe7/0x1e0 [ 77.597166][ T9960] ? __vb2_queue_cancel.cold+0x11/0x20f [ 77.603428][ T9960] __warn.cold+0x20/0x4c [ 77.607805][ T9960] ? wake_up_klogd+0x99/0xd0 [ 77.612584][ T9960] ? __vb2_queue_cancel.cold+0x11/0x20f [ 77.618439][ T9960] report_bug+0x263/0x2b0 [ 77.622779][ T9960] do_error_trap+0x11b/0x200 [ 77.627593][ T9960] do_invalid_op+0x37/0x50 [ 77.632018][ T9960] ? __vb2_queue_cancel.cold+0x11/0x20f [ 77.637741][ T9960] invalid_op+0x23/0x30 [ 77.642305][ T9960] RIP: 0010:__vb2_queue_cancel.cold+0x11/0x20f [ 77.648810][ T9960] Code: 71 ff ff e9 8f 70 ff ff e8 26 56 e1 fc eb bb e8 1f 56 e1 fc e9 4d ff ff ff e8 65 43 a7 fc 48 c7 c7 60 8a 06 88 e8 2d e4 90 fc <0f> 0b 48 8b 45 d0 48 05 28 02 00 00 48 89 45 88 48 c1 e8 03 48 89 [ 77.669996][ T9960] RSP: 0018:ffff888098627ac0 EFLAGS: 00010286 [ 77.676413][ T9960] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 77.684886][ T9960] RDX: 0000000000000000 RSI: ffffffff815c2466 RDI: ffffed10130c4f4a [ 77.693037][ T9960] RBP: ffff888098627b38 R08: 0000000000000024 R09: ffffed1015d260d1 [ 77.701882][ T9960] R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: ffff8882181474fc [ 77.710349][ T9960] R13: ffff888218147590 R14: ffff8882181472b8 R15: ffff8882181414b0 [ 77.718458][ T9960] ? vprintk_func+0x86/0x189 [ 77.723157][ T9960] ? __kasan_check_read+0x11/0x20 [ 77.728986][ T9960] vb2_core_streamoff+0x60/0x150 [ 77.734103][ T9960] __vb2_cleanup_fileio+0x78/0x170 [ 77.739656][ T9960] vb2_core_queue_release+0x20/0x80 [ 77.745319][ T9960] _vb2_fop_release+0x1cf/0x2a0 [ 77.750326][ T9960] vb2_fop_release+0x75/0xc0 [ 77.755237][ T9960] vivid_fop_release+0x18e/0x450 [ 77.760586][ T9960] ? vivid_req_validate+0xc0/0xc0 [ 77.766145][ T9960] v4l2_release+0x21f/0x390 [ 77.771259][ T9960] __fput+0x2ff/0x890 [ 77.775246][ T9960] ? dev_debug_store+0x110/0x110 [ 77.780559][ T9960] ____fput+0x16/0x20 [ 77.784550][ T9960] task_work_run+0x145/0x1c0 [ 77.789892][ T9960] do_exit+0x92f/0x2e50 [ 77.795229][ T9960] ? mm_update_next_owner+0x640/0x640 [ 77.800738][ T9960] ? down_read_non_owner+0x450/0x450 [ 77.806148][ T9960] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 77.812858][ T9960] ? handle_mm_fault+0x1d3/0x6b0 [ 77.818297][ T9960] do_group_exit+0x135/0x360 [ 77.822979][ T9960] __x64_sys_exit_group+0x44/0x50 [ 77.828309][ T9960] do_syscall_64+0xfd/0x6a0 [ 77.833580][ T9960] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.839788][ T9960] RIP: 0033:0x443b88 [ 77.843882][ T9960] Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 [ 77.865914][ T9960] RSP: 002b:00007ffd66c53618 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 77.875454][ T9960] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443b88 [ 77.883947][ T9960] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 77.892280][ T9960] RBP: 00000000004c34f0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 77.900550][ T9960] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001 [ 77.908521][ T9960] R13: 00000000006d5180 R14: 0000000000000000 R15: 0000000000000000 [ 77.918378][ T9960] Kernel Offset: disabled [ 77.923075][ T9960] Rebooting in 86400 seconds..