[ 40.694259][ T26] audit: type=1800 audit(1548748437.516:25): pid=7910 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.714827][ T26] audit: type=1800 audit(1548748437.516:26): pid=7910 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.760717][ T26] audit: type=1800 audit(1548748437.516:27): pid=7910 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: rsyslog ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.148' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.578941][ T8082] WARNING: CPU: 1 PID: 8082 at drivers/media/common/videobuf2/videobuf2-core.c:728 vb2_core_reqbufs+0x59b/0xf10 [ 49.590932][ T8082] Kernel panic - not syncing: panic_on_warn set ... [ 49.597500][ T8082] CPU: 1 PID: 8082 Comm: syz-executor505 Not tainted 5.0.0-rc4-next-20190129 #21 [ 49.606705][ T8082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.616764][ T8082] Call Trace: [ 49.620058][ T8082] dump_stack+0x1db/0x2d0 [ 49.624396][ T8082] ? dump_stack_print_info.cold+0x20/0x20 [ 49.630115][ T8082] ? add_lock_to_list.isra.0+0x450/0x450 [ 49.635775][ T8082] ? vb2_core_reqbufs+0x580/0xf10 [ 49.640826][ T8082] panic+0x2cb/0x65c [ 49.644768][ T8082] ? add_taint.cold+0x16/0x16 [ 49.649460][ T8082] ? vb2_core_reqbufs+0x59b/0xf10 [ 49.654486][ T8082] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.660739][ T8082] ? __probe_kernel_read+0x1f4/0x250 [ 49.666079][ T8082] ? __warn.cold+0x5/0x48 [ 49.670394][ T8082] ? __warn+0xe8/0x1d0 [ 49.674446][ T8082] ? vb2_core_reqbufs+0x59b/0xf10 [ 49.679445][ T8082] __warn.cold+0x20/0x48 [ 49.683663][ T8082] ? vb2_core_reqbufs+0x59b/0xf10 [ 49.688667][ T8082] report_bug+0x263/0x2b0 [ 49.692978][ T8082] do_error_trap+0x11b/0x200 [ 49.697561][ T8082] do_invalid_op+0x37/0x50 [ 49.701969][ T8082] ? vb2_core_reqbufs+0x59b/0xf10 [ 49.707007][ T8082] invalid_op+0x14/0x20 [ 49.711157][ T8082] RIP: 0010:vb2_core_reqbufs+0x59b/0xf10 [ 49.716783][ T8082] Code: 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 56 08 00 00 45 8b 3c 9e 31 ff 44 89 fe e8 9f 41 3d fc 45 85 ff 75 9f e8 15 40 3d fc <0f> 0b 41 bc ea ff ff ff e8 08 40 3d fc 48 b8 00 00 00 00 00 fc ff [ 49.736380][ T8082] RSP: 0018:ffff88809d8e7680 EFLAGS: 00010293 [ 49.742442][ T8082] RAX: ffff88809138e3c0 RBX: 0000000000000000 RCX: ffffffff8544da11 [ 49.750409][ T8082] RDX: 0000000000000000 RSI: ffffffff8544da1b RDI: 0000000000000005 [ 49.758366][ T8082] RBP: ffff88809d8e77b0 R08: ffff88809138e3c0 R09: ffff88808d42d6f0 [ 49.766317][ T8082] R10: ffffed1011a85ae5 R11: ffff88808d42d72f R12: 0000000000000001 [ 49.774268][ T8082] R13: dffffc0000000000 R14: ffff88809d8e7728 R15: 0000000000000000 [ 49.782236][ T8082] ? vb2_core_reqbufs+0x591/0xf10 [ 49.787285][ T8082] ? vb2_core_reqbufs+0x59b/0xf10 [ 49.792317][ T8082] ? __vb2_queue_cancel+0xd30/0xd30 [ 49.797524][ T8082] ? kasan_check_read+0x11/0x20 [ 49.802389][ T8082] ? add_lock_to_list.isra.0+0x450/0x450 [ 49.808019][ T8082] ? rcu_read_unlock_special+0x380/0x380 [ 49.813652][ T8082] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.819926][ T8082] vb2_reqbufs+0x1cb/0x210 [ 49.824348][ T8082] v4l2_m2m_reqbufs+0x90/0x1d0 [ 49.829102][ T8082] v4l2_m2m_ioctl_reqbufs+0x6b/0x80 [ 49.834302][ T8082] v4l_reqbufs+0xad/0xe0 [ 49.838541][ T8082] __video_do_ioctl+0x805/0xd80 [ 49.843391][ T8082] ? v4l_s_fmt+0xb40/0xb40 [ 49.847803][ T8082] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 49.854028][ T8082] ? _copy_from_user+0xdd/0x150 [ 49.858860][ T8082] video_usercopy+0x460/0x16b0 [ 49.863606][ T8082] ? v4l_s_fmt+0xb40/0xb40 [ 49.868007][ T8082] ? v4l_enumstd+0x70/0x70 [ 49.872412][ T8082] ? save_stack+0xa9/0xd0 [ 49.876721][ T8082] ? save_stack+0x45/0xd0 [ 49.881038][ T8082] ? __kasan_slab_free+0x102/0x150 [ 49.886141][ T8082] ? kasan_slab_free+0xe/0x10 [ 49.890804][ T8082] ? kmem_cache_free+0x86/0x260 [ 49.895642][ T8082] ? putname+0xef/0x130 [ 49.899782][ T8082] ? do_sys_open+0x3f4/0x7c0 [ 49.904376][ T8082] ? __x64_sys_openat+0x9d/0x100 [ 49.909305][ T8082] ? do_syscall_64+0x1a3/0x800 [ 49.914060][ T8082] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.920126][ T8082] ? trace_hardirqs_off+0xb8/0x310 [ 49.925235][ T8082] ? kasan_check_read+0x11/0x20 [ 49.930088][ T8082] ? do_raw_spin_unlock+0xa0/0x330 [ 49.935191][ T8082] ? trace_hardirqs_on_caller+0x310/0x310 [ 49.940906][ T8082] ? do_raw_spin_trylock+0x270/0x270 [ 49.946199][ T8082] ? trace_hardirqs_off+0xb8/0x310 [ 49.951304][ T8082] ? video_usercopy+0x16b0/0x16b0 [ 49.956340][ T8082] video_ioctl2+0x2d/0x35 [ 49.960674][ T8082] v4l2_ioctl+0x156/0x1b0 [ 49.965003][ T8082] ? video_devdata+0xa0/0xa0 [ 49.969576][ T8082] do_vfs_ioctl+0x107b/0x17d0 [ 49.974231][ T8082] ? putname+0xef/0x130 [ 49.978388][ T8082] ? ioctl_preallocate+0x2f0/0x2f0 [ 49.983480][ T8082] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.989703][ T8082] ? __fget_light+0x2db/0x420 [ 49.994380][ T8082] ? fget_raw+0x20/0x20 [ 49.998534][ T8082] ? do_sys_open+0x3f9/0x7c0 [ 50.003117][ T8082] ? do_syscall_64+0x8c/0x800 [ 50.007800][ T8082] ? do_syscall_64+0x8c/0x800 [ 50.012473][ T8082] ? lockdep_hardirqs_on+0x418/0x5d0 [ 50.017758][ T8082] ? security_file_ioctl+0x93/0xc0 [ 50.022884][ T8082] ksys_ioctl+0xab/0xd0 [ 50.027031][ T8082] __x64_sys_ioctl+0x73/0xb0 [ 50.031615][ T8082] do_syscall_64+0x1a3/0x800 [ 50.036207][ T8082] ? syscall_return_slowpath+0x5f0/0x5f0 [ 50.041829][ T8082] ? prepare_exit_to_usermode+0x232/0x3b0 [ 50.047544][ T8082] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.053083][ T8082] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.058967][ T8082] RIP: 0033:0x440049 [ 50.062845][ T8082] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.082435][ T8082] RSP: 002b:00007ffc76fc9aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.090841][ T8082] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440049 [ 50.098812][ T8082] RDX: 0000000020000400 RSI: 00000000c0145608 RDI: 0000000000000003 [ 50.106785][ T8082] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 50.114769][ T8082] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004018d0 [ 50.122752][ T8082] R13: 0000000000401960 R14: 0000000000000000 R15: 0000000000000000 [ 50.131920][ T8082] Kernel Offset: disabled [ 50.136302][ T8082] Rebooting in 86400 seconds..