[ 41.616628] audit: type=1800 audit(1565914995.184:30): pid=7669 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=2490 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] 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: [ 46.207925] kauditd_printk_skb: 4 callbacks suppressed [ 46.207941] audit: type=1400 audit(1565914999.804:35): avc: denied { map } for pid=7843 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 '10.128.0.108' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 447.938614] audit: type=1400 audit(1565915401.534:36): avc: denied { map } for pid=7855 comm="syz-executor519" path="/root/syz-executor519989792" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 448.190947] ------------[ cut here ]------------ [ 448.197058] WARNING: CPU: 1 PID: 7981 at drivers/media/common/videobuf2/videobuf2-core.c:1690 __vb2_queue_cancel.cold+0x11/0x213 [ 448.208779] Kernel panic - not syncing: panic_on_warn set ... [ 448.208779] [ 448.216191] CPU: 1 PID: 7981 Comm: syz-executor519 Not tainted 4.19.66 #40 [ 448.223230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 448.232660] Call Trace: [ 448.235328] dump_stack+0x172/0x1f0 [ 448.239006] panic+0x263/0x507 [ 448.242234] ? __warn_printk+0xf3/0xf3 [ 448.246142] ? __vb2_queue_cancel.cold+0x11/0x213 [ 448.251030] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 448.256559] ? __warn.cold+0x5/0x4a [ 448.260285] ? __warn+0xe8/0x1d0 [ 448.263734] ? __vb2_queue_cancel.cold+0x11/0x213 [ 448.268578] __warn.cold+0x20/0x4a [ 448.272110] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 448.277718] ? __vb2_queue_cancel.cold+0x11/0x213 [ 448.282562] report_bug+0x263/0x2b0 [ 448.286313] do_error_trap+0x204/0x360 [ 448.290230] ? math_error+0x340/0x340 [ 448.294025] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 448.299795] ? wake_up_klogd+0x99/0xd0 [ 448.303691] ? vprintk_emit+0x264/0x690 [ 448.307722] ? error_entry+0x7c/0xe0 [ 448.311471] ? trace_hardirqs_off_caller+0x65/0x220 [ 448.316663] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 448.321551] do_invalid_op+0x1b/0x20 [ 448.325267] invalid_op+0x14/0x20 [ 448.328715] RIP: 0010:__vb2_queue_cancel.cold+0x11/0x213 [ 448.334307] Code: 48 c7 c7 e0 7c c0 87 e8 eb e2 af fc 0f 0b 41 bc ea ff ff ff e9 f6 49 ff ff e8 65 7b c5 fc 48 c7 c7 e0 7c c0 87 e8 cd e2 af fc <0f> 0b 49 8d 85 28 02 00 00 48 89 45 a0 48 c1 e8 03 48 89 c2 b8 ff [ 448.353342] RSP: 0018:ffff8880a4d9fae8 EFLAGS: 00010282 [ 448.358797] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 448.366068] RDX: 0000000000000000 RSI: ffffffff8155d916 RDI: ffffed10149b3f4f [ 448.373439] RBP: ffff8880a4d9fb58 R08: 0000000000000024 R09: ffffed1015d25079 [ 448.380899] R10: ffffed1015d25078 R11: ffff8880ae9283c7 R12: ffff8882183e5e3c [ 448.388180] R13: ffff8882183e5bf8 R14: ffff8882183e5ed8 R15: ffff8882183e5ed0 [ 448.395709] ? vprintk_func+0x86/0x189 [ 448.399698] ? __vb2_queue_cancel.cold+0x11/0x213 [ 448.404592] ? lock_downgrade+0x810/0x810 [ 448.408779] ? v4l2_fh_is_singular+0xff/0x160 [ 448.413269] vb2_core_streamoff+0x60/0x150 [ 448.417501] __vb2_cleanup_fileio+0x78/0x170 [ 448.421899] vb2_core_queue_release+0x20/0x80 [ 448.426448] _vb2_fop_release+0x1cf/0x2a0 [ 448.430591] vb2_fop_release+0x75/0xc0 [ 448.434550] vivid_fop_release+0x18e/0x430 [ 448.438774] ? vivid_remove+0x460/0x460 [ 448.442768] ? dev_debug_store+0x110/0x110 [ 448.446993] v4l2_release+0xf9/0x1a0 [ 448.450841] __fput+0x2dd/0x8b0 [ 448.454130] ____fput+0x16/0x20 [ 448.457435] task_work_run+0x145/0x1c0 [ 448.461362] do_exit+0x994/0x2fa0 [ 448.464815] ? mm_update_next_owner+0x660/0x660 [ 448.469587] ? up_read+0x1a/0x110 [ 448.473050] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 448.478611] ? __do_page_fault+0x484/0xe90 [ 448.482919] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 448.487688] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 448.492492] do_group_exit+0x135/0x370 [ 448.496384] __x64_sys_exit_group+0x44/0x50 [ 448.500797] do_syscall_64+0xfd/0x620 [ 448.505471] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 448.510819] RIP: 0033:0x443b88 [ 448.514006] 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 [ 448.532918] RSP: 002b:00007ffcd6f04908 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 448.540680] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443b88 [ 448.548406] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 448.555710] RBP: 00000000004c34f0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 448.563139] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001 [ 448.570710] R13: 00000000006d5180 R14: 0000000000000000 R15: 0000000000000000 [ 448.579498] Kernel Offset: disabled [ 448.583204] Rebooting in 86400 seconds..