[ 48.429039] audit: type=1800 audit(1547663164.473:30): pid=8303 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?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: [ 53.871195] kauditd_printk_skb: 4 callbacks suppressed [ 53.871210] audit: type=1400 audit(1547663169.943:35): avc: denied { map } for pid=8475 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.10.51' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 60.725123] audit: type=1400 audit(1547663176.803:36): avc: denied { map } for pid=8487 comm="syz-executor021" path="/root/syz-executor021965614" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 60.934687] WARNING: CPU: 0 PID: 8495 at drivers/media/common/videobuf2/videobuf2-core.c:1852 __vb2_queue_cancel+0x8f1/0xd30 [ 60.946125] Kernel panic - not syncing: panic_on_warn set ... [ 60.952019] CPU: 0 PID: 8495 Comm: syz-executor021 Not tainted 5.0.0-rc2+ #29 [ 60.959292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.968624] Call Trace: [ 60.971210] dump_stack+0x1db/0x2d0 [ 60.974844] ? dump_stack_print_info.cold+0x20/0x20 [ 60.979861] ? __vb2_queue_cancel+0x880/0xd30 [ 60.984376] panic+0x2cb/0x65c [ 60.987565] ? add_taint.cold+0x16/0x16 [ 60.991525] ? __vb2_queue_cancel+0x8f1/0xd30 [ 60.996006] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.001542] ? __probe_kernel_read+0x1f4/0x250 [ 61.006116] ? __warn.cold+0x5/0x48 [ 61.009737] ? __warn+0xe8/0x1d0 [ 61.013088] ? __vb2_queue_cancel+0x8f1/0xd30 [ 61.017577] __warn.cold+0x20/0x48 [ 61.021103] ? __vb2_queue_cancel+0x8f1/0xd30 [ 61.025584] report_bug+0x263/0x2b0 [ 61.029200] do_error_trap+0x11b/0x200 [ 61.033080] do_invalid_op+0x37/0x50 [ 61.036778] ? __vb2_queue_cancel+0x8f1/0xd30 [ 61.041259] invalid_op+0x14/0x20 [ 61.044697] RIP: 0010:__vb2_queue_cancel+0x8f1/0xd30 [ 61.049790] Code: 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 15 04 00 00 48 81 c4 18 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7f 9b 3f fc <0f> 0b 49 8d 87 28 02 00 00 48 89 85 d0 fe ff ff 48 c1 e8 03 42 0f [ 61.068709] RSP: 0018:ffff888094e87938 EFLAGS: 00010293 [ 61.074061] RAX: ffff8880a8382680 RBX: ffff888094e87a50 RCX: ffffffff85425c42 [ 61.081327] RDX: 0000000000000000 RSI: ffffffff85426371 RDI: 0000000000000005 [ 61.088588] RBP: ffff888094e87a78 R08: ffff8880a8382680 R09: ffffed1013c6acf1 [ 61.095848] R10: ffffed1013c6acf0 R11: ffff88809e356787 R12: ffff88809e356784 [ 61.103113] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88809e356540 [ 61.110382] ? __vb2_queue_cancel+0x1c2/0xd30 [ 61.114863] ? __vb2_queue_cancel+0x8f1/0xd30 [ 61.119345] ? __vb2_queue_cancel+0x8f1/0xd30 [ 61.123828] ? kasan_check_read+0x11/0x20 [ 61.127964] ? do_raw_spin_unlock+0xa0/0x330 [ 61.132358] ? vb2_buffer_done+0xc90/0xc90 [ 61.136590] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 61.141687] ? kasan_check_write+0x14/0x20 [ 61.145908] ? wake_up_q+0xaa/0x100 [ 61.149531] ? __mutex_unlock_slowpath+0x420/0x870 [ 61.154451] vb2_core_streamoff+0x60/0x140 [ 61.158673] __vb2_cleanup_fileio+0x78/0x170 [ 61.163094] vb2_core_queue_release+0x20/0x80 [ 61.167601] _vb2_fop_release+0x1cf/0x2a0 [ 61.171802] vb2_fop_release+0x75/0xc0 [ 61.175695] vivid_fop_release+0x18e/0x430 [ 61.179917] ? vivid_remove+0x460/0x460 [ 61.183889] v4l2_release+0x224/0x3a0 [ 61.187681] __fput+0x3c5/0xb10 [ 61.190955] ? dev_debug_store+0x150/0x150 [ 61.195174] ? get_max_files+0x20/0x20 [ 61.199051] ? task_work_run+0x1bb/0x2b0 [ 61.203095] ? trace_hardirqs_off_caller+0x300/0x300 [ 61.208183] ? do_raw_spin_trylock+0x270/0x270 [ 61.212753] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.218286] ____fput+0x16/0x20 [ 61.221554] task_work_run+0x1f4/0x2b0 [ 61.225439] ? task_work_cancel+0x2c0/0x2c0 [ 61.229762] ? __close_fd+0x25f/0x3d0 [ 61.233548] ? do_syscall_64+0x8c/0x800 [ 61.237510] exit_to_usermode_loop+0x32a/0x3b0 [ 61.242084] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.247435] ? syscall_trace_enter+0x12a0/0x12a0 [ 61.252180] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 61.256948] do_syscall_64+0x696/0x800 [ 61.260825] ? syscall_return_slowpath+0x5f0/0x5f0 [ 61.265768] ? prepare_exit_to_usermode+0x232/0x3b0 [ 61.270782] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 61.275617] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.280788] RIP: 0033:0x400ef0 [ 61.283990] 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 [ 61.302890] RSP: 002b:00007ffe13a1bec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 61.310613] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000400ef0 [ 61.317865] RDX: 00000000000ca800 RSI: 0000000020000000 RDI: 0000000000000003 [ 61.325124] RBP: 0000000000000000 R08: 00000000009af880 R09: 00000000004002e0 [ 61.332374] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401e00 [ 61.339631] R13: 0000000000401e90 R14: 0000000000000000 R15: 0000000000000000 [ 61.348060] Kernel Offset: disabled [ 61.351736] Rebooting in 86400 seconds..