[ 81.548761][ T26] audit: type=1800 audit(1565891927.895:30): pid=10888 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[1G[[32m ok [39;49m8[?25h[?0c. [ 82.144778][T10975] restorecond (10975) used greatest stack depth: 23480 bytes left [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.206' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 90.251911][ T26] kauditd_printk_skb: 5 callbacks suppressed [ 90.251927][ T26] audit: type=1400 audit(1565891936.625:36): avc: denied { map } for pid=11081 comm="syz-executor170" path="/root/syz-executor170740416" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 90.283412][T11089] ------------[ cut here ]------------ [ 90.291760][T11089] WARNING: CPU: 0 PID: 11089 at drivers/media/common/videobuf2/videobuf2-core.c:1882 __vb2_queue_cancel.cold+0x11/0x20f [ 90.304367][T11089] Kernel panic - not syncing: panic_on_warn set ... [ 90.311035][T11089] CPU: 0 PID: 11089 Comm: syz-executor170 Not tainted 5.3.0-rc4+ #103 [ 90.319210][T11089] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.329357][T11089] Call Trace: [ 90.332640][T11089] dump_stack+0x172/0x1f0 [ 90.336961][T11089] ? vb2_buffer_done.cold+0x3e/0x114 [ 90.342279][T11089] panic+0x2dc/0x755 [ 90.346170][T11089] ? add_taint.cold+0x16/0x16 [ 90.350837][T11089] ? __kasan_check_write+0x14/0x20 [ 90.355950][T11089] ? __warn.cold+0x5/0x4c [ 90.360286][T11089] ? __warn+0xe7/0x1e0 [ 90.364366][T11089] ? __vb2_queue_cancel.cold+0x11/0x20f [ 90.369900][T11089] __warn.cold+0x20/0x4c [ 90.374152][T11089] ? wake_up_klogd+0x99/0xd0 [ 90.378733][T11089] ? __vb2_queue_cancel.cold+0x11/0x20f [ 90.384277][T11089] report_bug+0x263/0x2b0 [ 90.388601][T11089] do_error_trap+0x11b/0x200 [ 90.393304][T11089] do_invalid_op+0x37/0x50 [ 90.397715][T11089] ? __vb2_queue_cancel.cold+0x11/0x20f [ 90.403429][T11089] invalid_op+0x23/0x30 [ 90.407578][T11089] RIP: 0010:__vb2_queue_cancel.cold+0x11/0x20f [ 90.413818][T11089] Code: 71 ff ff e9 8f 70 ff ff e8 26 56 e1 fc eb bb e8 1f 56 e1 fc e9 4d ff ff ff e8 65 43 a7 fc 48 c7 c7 60 8a 06 88 e8 2d e4 90 fc <0f> 0b 48 8b 45 d0 48 05 28 02 00 00 48 89 45 88 48 c1 e8 03 48 89 [ 90.433571][T11089] RSP: 0018:ffff888087e77ac0 EFLAGS: 00010286 [ 90.439655][T11089] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 90.447616][T11089] RDX: 0000000000000000 RSI: ffffffff815c2466 RDI: ffffed1010fcef4a [ 90.455693][T11089] RBP: ffff888087e77b38 R08: 0000000000000024 R09: ffffed1015d060d1 [ 90.463810][T11089] R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffff88809ed6757c [ 90.471868][T11089] R13: ffff88809ed67610 R14: ffff88809ed67338 R15: ffff88809ed61530 [ 90.479965][T11089] ? vprintk_func+0x86/0x189 [ 90.485762][T11089] ? refcount_dec_and_test_checked+0x1b/0x20 [ 90.491781][T11089] vb2_core_streamoff+0x60/0x150 [ 90.497005][T11089] __vb2_cleanup_fileio+0x78/0x170 [ 90.508941][T11089] vb2_core_queue_release+0x20/0x80 [ 90.514202][T11089] _vb2_fop_release+0x1cf/0x2a0 [ 90.519159][T11089] vb2_fop_release+0x75/0xc0 [ 90.523735][T11089] vivid_fop_release+0x18e/0x450 [ 90.528754][T11089] ? vivid_req_validate+0xc0/0xc0 [ 90.533794][T11089] v4l2_release+0x21f/0x390 [ 90.538316][T11089] __fput+0x2ff/0x890 [ 90.542395][T11089] ? dev_debug_store+0x110/0x110 [ 90.547319][T11089] ____fput+0x16/0x20 [ 90.551309][T11089] task_work_run+0x145/0x1c0 [ 90.555912][T11089] do_exit+0x92f/0x2e50 [ 90.560059][T11089] ? mm_update_next_owner+0x640/0x640 [ 90.565511][T11089] ? down_read_non_owner+0x450/0x450 [ 90.570802][T11089] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 90.577135][T11089] ? handle_mm_fault+0x1d3/0x6b0 [ 90.582252][T11089] do_group_exit+0x135/0x360 [ 90.586833][T11089] __x64_sys_exit_group+0x44/0x50 [ 90.591842][T11089] do_syscall_64+0xfd/0x6a0 [ 90.596362][T11089] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.602262][T11089] RIP: 0033:0x443b88 [ 90.606178][T11089] 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 [ 90.627467][T11089] RSP: 002b:00007ffee1057088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 90.635871][T11089] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443b88 [ 90.644480][T11089] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 90.652473][T11089] RBP: 00000000004c34f0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 90.660438][T11089] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001 [ 90.673162][T11089] R13: 00000000006d5180 R14: 0000000000000000 R15: 0000000000000000 [ 90.682432][T11089] Kernel Offset: disabled [ 90.686777][T11089] Rebooting in 86400 seconds..