[ 37.229509][ T26] audit: type=1800 audit(1555759150.957:27): pid=7680 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.275042][ T26] audit: type=1800 audit(1555759150.957:28): pid=7680 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. [ 37.816045][ T26] audit: type=1800 audit(1555759151.597:29): pid=7680 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 [ 37.836406][ T26] audit: type=1800 audit(1555759151.597:30): pid=7680 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 '10.128.10.36' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 61.427441][ T7840] WARNING: CPU: 1 PID: 7840 at drivers/media/common/videobuf2/videobuf2-core.c:1864 __vb2_queue_cancel+0x8bb/0xc80 [ 61.439847][ T7840] Kernel panic - not syncing: panic_on_warn set ... [ 61.446431][ T7840] CPU: 1 PID: 7840 Comm: syz-executor441 Not tainted 5.1.0-rc5+ #76 [ 61.454448][ T7840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.464485][ T7840] Call Trace: [ 61.467768][ T7840] dump_stack+0x172/0x1f0 [ 61.472101][ T7840] ? __vb2_queue_cancel+0x830/0xc80 [ 61.477353][ T7840] panic+0x2cb/0x65c [ 61.481246][ T7840] ? __warn_printk+0xf3/0xf3 [ 61.485849][ T7840] ? __vb2_queue_cancel+0x8bb/0xc80 [ 61.491045][ T7840] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.497279][ T7840] ? __warn.cold+0x5/0x45 [ 61.501605][ T7840] ? __warn+0xe8/0x1d0 [ 61.505678][ T7840] ? __vb2_queue_cancel+0x8bb/0xc80 [ 61.511177][ T7840] __warn.cold+0x20/0x45 [ 61.515519][ T7840] ? __vb2_queue_cancel+0x8bb/0xc80 [ 61.520714][ T7840] report_bug+0x263/0x2b0 [ 61.525039][ T7840] do_error_trap+0x11b/0x200 [ 61.529621][ T7840] do_invalid_op+0x37/0x50 [ 61.534039][ T7840] ? __vb2_queue_cancel+0x8bb/0xc80 [ 61.539240][ T7840] invalid_op+0x14/0x20 [ 61.543436][ T7840] RIP: 0010:__vb2_queue_cancel+0x8bb/0xc80 [ 61.549239][ T7840] Code: 16 fb ff ff 48 89 df e8 63 06 f4 fc e9 09 fb ff ff e8 39 f1 bb fc 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 25 f1 bb fc <0f> 0b 48 8b 45 d0 48 05 28 02 00 00 48 89 c2 48 89 45 88 48 b8 00 [ 61.568821][ T7840] RSP: 0018:ffff8880a45e7ab8 EFLAGS: 00010293 [ 61.575053][ T7840] RAX: ffff8880a44fe280 RBX: 0000000000000002 RCX: ffffffff84b493f1 [ 61.583010][ T7840] RDX: 0000000000000000 RSI: ffffffff84b49b8b RDI: 0000000000000005 [ 61.590965][ T7840] RBP: ffff8880a45e7b30 R08: ffff8880a44fe280 R09: ffffed1043042cd6 [ 61.598959][ T7840] R10: ffffed1043042cd5 R11: ffff8882182166af R12: ffff8882182166ac [ 61.606972][ T7840] R13: ffff888218216740 R14: ffff888218216468 R15: ffff888218211468 [ 61.614957][ T7840] ? __vb2_queue_cancel+0x121/0xc80 [ 61.620251][ T7840] ? __vb2_queue_cancel+0x8bb/0xc80 [ 61.625556][ T7840] ? __vb2_queue_cancel+0x8bb/0xc80 [ 61.630743][ T7840] ? refcount_dec_and_test_checked+0x1b/0x20 [ 61.636721][ T7840] vb2_core_streamoff+0x60/0x140 [ 61.641670][ T7840] __vb2_cleanup_fileio+0x78/0x170 [ 61.646788][ T7840] vb2_core_queue_release+0x20/0x80 [ 61.651979][ T7840] _vb2_fop_release+0x1cf/0x2a0 [ 61.656815][ T7840] vb2_fop_release+0x75/0xc0 [ 61.661381][ T7840] vivid_fop_release+0x18e/0x430 [ 61.666314][ T7840] ? vivid_remove+0x470/0x470 [ 61.670971][ T7840] v4l2_release+0x224/0x3a0 [ 61.675459][ T7840] ? dev_debug_store+0x110/0x110 [ 61.680418][ T7840] __fput+0x2e5/0x8d0 [ 61.684391][ T7840] ____fput+0x16/0x20 [ 61.688351][ T7840] task_work_run+0x14a/0x1c0 [ 61.692925][ T7840] do_exit+0x90a/0x2fa0 [ 61.697095][ T7840] ? mm_update_next_owner+0x640/0x640 [ 61.702454][ T7840] ? kasan_check_write+0x14/0x20 [ 61.707368][ T7840] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 61.712808][ T7840] do_group_exit+0x135/0x370 [ 61.717416][ T7840] __ia32_sys_exit_group+0x44/0x50 [ 61.722529][ T7840] do_fast_syscall_32+0x281/0xc98 [ 61.727565][ T7840] entry_SYSENTER_compat+0x70/0x7f [ 61.732659][ T7840] RIP: 0023:0xf7fa5869 [ 61.736714][ T7840] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 61.756299][ T7840] RSP: 002b:00000000ffe5bebc EFLAGS: 00000296 ORIG_RAX: 00000000000000fc [ 61.764808][ T7840] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000080f1298 [ 61.772766][ T7840] RDX: 0000000000000000 RSI: 00000000080dac1c RDI: 00000000080f12a0 [ 61.781032][ T7840] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 61.789100][ T7840] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 61.797080][ T7840] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 61.805923][ T7840] Kernel Offset: disabled [ 61.810312][ T7840] Rebooting in 86400 seconds..