[ 41.108983] audit: type=1800 audit(1574457789.885:30): pid=7621 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: [ 45.649704] kauditd_printk_skb: 4 callbacks suppressed [ 45.649719] audit: type=1400 audit(1574457794.445:35): avc: denied { map } for pid=7795 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 '10.128.1.24' (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 [ 429.326525] audit: type=1400 audit(1574458178.125:36): avc: denied { map } for pid=7807 comm="syz-executor003" path="/root/syz-executor003453826" 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 [ 429.376305] ------------[ cut here ]------------ [ 429.382162] WARNING: CPU: 0 PID: 7826 at drivers/media/common/videobuf2/videobuf2-core.c:1690 __vb2_queue_cancel.cold+0x11/0x213 [ 429.394172] Kernel panic - not syncing: panic_on_warn set ... [ 429.394172] [ 429.401775] CPU: 0 PID: 7826 Comm: syz-executor003 Not tainted 4.19.85-syzkaller #0 [ 429.409679] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 429.419198] Call Trace: [ 429.421916] dump_stack+0x197/0x210 [ 429.425658] panic+0x26a/0x50e [ 429.428872] ? __warn_printk+0xf3/0xf3 [ 429.432783] ? __vb2_queue_cancel.cold+0x11/0x213 [ 429.437713] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 429.443264] ? __warn.cold+0x5/0x53 [ 429.446974] ? __warn+0xe8/0x1d0 [ 429.450364] ? __vb2_queue_cancel.cold+0x11/0x213 [ 429.455220] __warn.cold+0x20/0x53 [ 429.459741] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 429.465303] ? __vb2_queue_cancel.cold+0x11/0x213 [ 429.470151] report_bug+0x263/0x2b0 [ 429.473900] do_error_trap+0x204/0x360 [ 429.477910] ? math_error+0x340/0x340 [ 429.481742] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 429.487350] ? wake_up_klogd+0x99/0xd0 [ 429.491436] ? vprintk_emit+0x264/0x690 [ 429.495531] ? error_entry+0x7c/0xe0 [ 429.499400] ? trace_hardirqs_off_caller+0x65/0x220 [ 429.504484] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 429.509444] do_invalid_op+0x1b/0x20 [ 429.513375] invalid_op+0x14/0x20 [ 429.516830] RIP: 0010:__vb2_queue_cancel.cold+0x11/0x213 [ 429.522371] Code: 48 c7 c7 a0 7d c0 87 e8 5b cf b0 fc 0f 0b 41 bc ea ff ff ff e9 f6 49 ff ff e8 a5 6a c6 fc 48 c7 c7 a0 7d c0 87 e8 3d cf b0 fc <0f> 0b 49 8d 85 28 02 00 00 48 89 45 a0 48 c1 e8 03 48 89 c2 b8 ff [ 429.541582] RSP: 0018:ffff88809817fae8 EFLAGS: 00010282 [ 429.547060] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 429.554454] RDX: 0000000000000000 RSI: ffffffff815595d6 RDI: ffffed101302ff4f [ 429.561866] RBP: ffff88809817fb58 R08: 0000000000000024 R09: ffffed1015d05079 [ 429.569258] R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: ffff88809e635e3c [ 429.577106] R13: ffff88809e635bf8 R14: ffff88809e635ed8 R15: ffff88809e635ed0 [ 429.584524] ? vprintk_func+0x86/0x189 [ 429.588482] ? __vb2_queue_cancel.cold+0x11/0x213 [ 429.593476] ? lock_downgrade+0x880/0x880 [ 429.598014] ? v4l2_fh_is_singular+0xff/0x160 [ 429.602654] vb2_core_streamoff+0x60/0x150 [ 429.606996] __vb2_cleanup_fileio+0x78/0x170 [ 429.611744] vb2_core_queue_release+0x20/0x80 [ 429.616340] _vb2_fop_release+0x1cf/0x2a0 [ 429.620723] vb2_fop_release+0x75/0xc0 [ 429.625509] vivid_fop_release+0x18e/0x430 [ 429.629762] ? vivid_remove+0x460/0x460 [ 429.633944] ? dev_debug_store+0x110/0x110 [ 429.638241] v4l2_release+0xf9/0x1a0 [ 429.642023] __fput+0x2dd/0x8b0 [ 429.645321] ____fput+0x16/0x20 [ 429.648635] task_work_run+0x145/0x1c0 [ 429.652543] do_exit+0x994/0x2fa0 [ 429.656006] ? mm_update_next_owner+0x660/0x660 [ 429.660671] ? up_read+0x1a/0x110 [ 429.664216] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 429.669841] ? __do_page_fault+0x484/0xe90 [ 429.674091] ? ksys_read+0x1f1/0x2d0 [ 429.677824] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 429.682590] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 429.687357] do_group_exit+0x135/0x370 [ 429.691250] __x64_sys_exit_group+0x44/0x50 [ 429.695573] do_syscall_64+0xfd/0x620 [ 429.699383] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 429.704575] RIP: 0033:0x443b78 [ 429.707843] 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 [ 429.727205] RSP: 002b:00007ffc9e970d48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 429.734926] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443b78 [ 429.742293] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 429.749822] RBP: 00000000004c34f0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 429.757096] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001 [ 429.764397] R13: 00000000006d5180 R14: 0000000000000000 R15: 0000000000000000 [ 429.773344] Kernel Offset: disabled [ 429.777108] Rebooting in 86400 seconds..