[info] Using makefile-style concurrent boot in runlevel 2. [ 23.981418] audit: type=1800 audit(1541346252.601:21): pid=5489 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.009165] audit: type=1800 audit(1541346252.611:22): pid=5489 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.117' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.540811] BUG: pagefault on kernel address 0xffffc90002547000 in non-whitelisted uaccess [ 43.549341] BUG: unable to handle kernel paging request at ffffc90002547000 [ 43.556423] PGD 1da95a067 P4D 1da95a067 PUD 1da95b067 PMD 1c1b97067 PTE 0 [ 43.563448] Oops: 0000 [#1] PREEMPT SMP KASAN [ 43.567933] CPU: 0 PID: 5645 Comm: syz-executor658 Not tainted 4.19.0+ #319 [ 43.575025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.584380] RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 [ 43.590250] Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 [ 43.609257] RSP: 0018:ffff8801ba5af680 EFLAGS: 00010202 [ 43.614610] RAX: 0000000000000000 RBX: 000000000000ca80 RCX: 0000000000004a80 [ 43.621868] RDX: 000000000000ca80 RSI: ffffc90002547000 RDI: 00000000200080c0 [ 43.629120] RBP: ffff8801ba5af6b8 R08: 0000000000000000 R09: 000000000000032a [ 43.636385] R10: fffff520004a974f R11: ffffc9000254ba7f R12: 000000002000cb40 [ 43.643635] R13: 00000000200000c0 R14: ffffc9000253f000 R15: 00007ffffffff000 [ 43.650889] FS: 0000000001cc8880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 43.659095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.664964] CR2: ffffc90002547000 CR3: 00000001ba6a4000 CR4: 00000000001406f0 [ 43.672232] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.679501] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.686749] Call Trace: [ 43.689321] ? _copy_to_user+0xf6/0x110 [ 43.693295] vidioc_g_fmt_vid_overlay+0x392/0x550 [ 43.698131] v4l_g_fmt+0x2ad/0x640 [ 43.701662] __video_do_ioctl+0x8b1/0x1050 [ 43.705888] ? v4l_s_fmt+0x990/0x990 [ 43.709593] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 43.715115] video_usercopy+0x5c1/0x1760 [ 43.719158] ? v4l_s_fmt+0x990/0x990 [ 43.722855] ? v4l_enumstd+0x70/0x70 [ 43.726632] ? rcu_softirq_qs+0x20/0x20 [ 43.730610] ? is_bpf_text_address+0xd3/0x170 [ 43.735098] ? __kernel_text_address+0xd/0x40 [ 43.739580] ? unwind_get_return_address+0x61/0xa0 [ 43.744495] ? __save_stack_trace+0x8d/0xf0 [ 43.748805] ? save_stack+0xa9/0xd0 [ 43.752415] ? save_stack+0x43/0xd0 [ 43.756028] ? __kasan_slab_free+0x102/0x150 [ 43.760415] ? kasan_slab_free+0xe/0x10 [ 43.764368] ? kmem_cache_free+0x83/0x290 [ 43.768498] ? putname+0xf2/0x130 [ 43.771938] ? __x64_sys_open+0x7e/0xc0 [ 43.775981] ? do_syscall_64+0x1b9/0x820 [ 43.780030] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.785375] ? trace_hardirqs_off+0xb8/0x310 [ 43.789765] ? kasan_check_read+0x11/0x20 [ 43.793893] ? do_raw_spin_unlock+0xa7/0x330 [ 43.798285] ? trace_hardirqs_on+0x310/0x310 [ 43.802693] ? video_usercopy+0x1760/0x1760 [ 43.807009] video_ioctl2+0x2c/0x33 [ 43.810645] v4l2_ioctl+0x154/0x1b0 [ 43.814367] ? video_devdata+0xa0/0xa0 [ 43.818257] do_vfs_ioctl+0x1de/0x1790 [ 43.822134] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 43.827660] ? ioctl_preallocate+0x300/0x300 [ 43.832060] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.837585] ? __fget_light+0x2e9/0x430 [ 43.841541] ? fget_raw+0x20/0x20 [ 43.844991] ? rcu_read_lock_sched_held+0x14f/0x180 [ 43.849999] ? kmem_cache_free+0x24f/0x290 [ 43.854230] ? putname+0xf7/0x130 [ 43.857678] ? do_syscall_64+0x9a/0x820 [ 43.861634] ? do_syscall_64+0x9a/0x820 [ 43.865594] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 43.870160] ? security_file_ioctl+0x94/0xc0 [ 43.874552] ksys_ioctl+0xa9/0xd0 [ 43.877989] __x64_sys_ioctl+0x73/0xb0 [ 43.881873] do_syscall_64+0x1b9/0x820 [ 43.885745] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 43.891095] ? syscall_return_slowpath+0x5e0/0x5e0 [ 43.896013] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.900921] ? trace_hardirqs_on_caller+0x310/0x310 [ 43.905954] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 43.910975] ? prepare_exit_to_usermode+0x291/0x3b0 [ 43.916005] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.920902] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.926092] RIP: 0033:0x443f49 [ 43.929270] 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 7b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 43.948170] RSP: 002b:00007ffe4ed2a6c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 43.955861] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443f49 [ 43.963112] RDX: 00000000200000c0 RSI: 00000000c0d05604 RDI: 0000000000000004 [ 43.970363] RBP: 00000000006ce018 R08: 00000000004002e0 R09: 00000000004002e0 [ 43.977613] R10: 00000000004002e0 R11: 0000000000000217 R12: 0000000000401c50 [ 43.984863] R13: 0000000000401ce0 R14: 0000000000000000 R15: 0000000000000000 [ 43.992118] Modules linked in: [ 43.995294] CR2: ffffc90002547000 [ 43.998730] ---[ end trace 86e5963f37cd0e0a ]--- [ 44.003477] RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 [ 44.009344] Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 [ 44.028317] RSP: 0018:ffff8801ba5af680 EFLAGS: 00010202 [ 44.033753] RAX: 0000000000000000 RBX: 000000000000ca80 RCX: 0000000000004a80 [ 44.041010] RDX: 000000000000ca80 RSI: ffffc90002547000 RDI: 00000000200080c0 [ 44.048263] RBP: ffff8801ba5af6b8 R08: 0000000000000000 R09: 000000000000032a [ 44.055514] R10: fffff520004a974f R11: ffffc9000254ba7f R12: 000000002000cb40 [ 44.062764] R13: 00000000200000c0 R14: ffffc9000253f000 R15: 00007ffffffff000 [ 44.070152] FS: 0000000001cc8880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 44.078414] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.084284] CR2: ffffc90002547000 CR3: 00000001ba6a4000 CR4: 00000000001406f0 [ 44.091539] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.098853] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.106122] Kernel panic - not syncing: Fatal exception [ 44.112647] Kernel Offset: disabled [ 44.116270] Rebooting in 86400 seconds..