[ 40.275634][ T26] audit: type=1800 audit(1555759149.912:25): pid=7718 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.317686][ T26] audit: type=1800 audit(1555759149.912:26): pid=7718 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.342720][ T26] audit: type=1800 audit(1555759149.912:27): pid=7718 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.253' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 51.982358][ T7900] WARNING: CPU: 0 PID: 7900 at drivers/media/common/videobuf2/videobuf2-core.c:1864 __vb2_queue_cancel+0x8bb/0xc80 [ 51.994781][ T7900] Kernel panic - not syncing: panic_on_warn set ... [ 52.001477][ T7900] CPU: 0 PID: 7900 Comm: syz-executor002 Not tainted 5.1.0-rc5+ #78 [ 52.010098][ T7900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.020378][ T7900] Call Trace: [ 52.023705][ T7900] dump_stack+0x172/0x1f0 [ 52.028059][ T7900] ? __vb2_queue_cancel+0x830/0xc80 [ 52.033386][ T7900] panic+0x2cb/0x65c [ 52.037392][ T7900] ? __warn_printk+0xf3/0xf3 [ 52.042145][ T7900] ? __vb2_queue_cancel+0x8bb/0xc80 [ 52.047580][ T7900] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.054265][ T7900] ? __warn.cold+0x5/0x45 [ 52.058625][ T7900] ? __warn+0xe8/0x1d0 [ 52.062703][ T7900] ? __vb2_queue_cancel+0x8bb/0xc80 [ 52.067904][ T7900] __warn.cold+0x20/0x45 [ 52.072158][ T7900] ? __vb2_queue_cancel+0x8bb/0xc80 [ 52.077457][ T7900] report_bug+0x263/0x2b0 [ 52.081814][ T7900] do_error_trap+0x11b/0x200 [ 52.086454][ T7900] do_invalid_op+0x37/0x50 [ 52.091023][ T7900] ? __vb2_queue_cancel+0x8bb/0xc80 [ 52.096225][ T7900] invalid_op+0x14/0x20 [ 52.100385][ T7900] RIP: 0010:__vb2_queue_cancel+0x8bb/0xc80 [ 52.106490][ T7900] 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 [ 52.126095][ T7900] RSP: 0018:ffff88808c517ac8 EFLAGS: 00010293 [ 52.132172][ T7900] RAX: ffff88808e44e300 RBX: 0000000000000002 RCX: ffffffff84b493f1 [ 52.140182][ T7900] RDX: 0000000000000000 RSI: ffffffff84b49b8b RDI: 0000000000000005 [ 52.148171][ T7900] RBP: ffff88808c517b40 R08: ffff88808e44e300 R09: ffffed10430e4cc6 [ 52.156418][ T7900] R10: ffffed10430e4cc5 R11: ffff88821872662f R12: ffff88821872662c [ 52.164504][ T7900] R13: ffff8882187266c0 R14: ffff8882187263e8 R15: ffff8882187213e8 [ 52.172671][ T7900] ? __vb2_queue_cancel+0x121/0xc80 [ 52.177880][ T7900] ? __vb2_queue_cancel+0x8bb/0xc80 [ 52.183107][ T7900] ? __vb2_queue_cancel+0x8bb/0xc80 [ 52.188374][ T7900] ? refcount_dec_and_test_checked+0x1b/0x20 [ 52.194370][ T7900] vb2_core_streamoff+0x60/0x140 [ 52.199315][ T7900] __vb2_cleanup_fileio+0x78/0x170 [ 52.204437][ T7900] vb2_core_queue_release+0x20/0x80 [ 52.209638][ T7900] _vb2_fop_release+0x1cf/0x2a0 [ 52.214703][ T7900] vb2_fop_release+0x75/0xc0 [ 52.219390][ T7900] vivid_fop_release+0x18e/0x430 [ 52.224546][ T7900] ? vivid_remove+0x470/0x470 [ 52.229412][ T7900] v4l2_release+0x224/0x3a0 [ 52.233927][ T7900] ? dev_debug_store+0x110/0x110 [ 52.238920][ T7900] __fput+0x2e5/0x8d0 [ 52.242925][ T7900] ____fput+0x16/0x20 [ 52.246919][ T7900] task_work_run+0x14a/0x1c0 [ 52.251554][ T7900] do_exit+0x90a/0x2fa0 [ 52.255719][ T7900] ? __do_page_fault+0x623/0xda0 [ 52.260825][ T7900] ? mm_update_next_owner+0x640/0x640 [ 52.266369][ T7900] ? kasan_check_write+0x14/0x20 [ 52.271439][ T7900] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 52.277029][ T7900] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 52.282493][ T7900] do_group_exit+0x135/0x370 [ 52.287089][ T7900] __x64_sys_exit_group+0x44/0x50 [ 52.292118][ T7900] do_syscall_64+0x103/0x610 [ 52.296712][ T7900] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.302598][ T7900] RIP: 0033:0x443b78 [ 52.306493][ T7900] Code: Bad RIP value. [ 52.311040][ T7900] RSP: 002b:00007ffd378d2ea8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 52.319914][ T7900] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443b78 [ 52.327897][ T7900] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 52.335883][ T7900] RBP: 00000000004c34f0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 52.343901][ T7900] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 52.351901][ T7900] R13: 00000000006d5180 R14: 0000000000000000 R15: 0000000000000000 [ 52.360675][ T7900] Kernel Offset: disabled [ 52.365169][ T7900] Rebooting in 86400 seconds..