[info] Using makefile-style concurrent boot in runlevel 2. [ 24.691575] audit: type=1800 audit(1541188106.960:21): pid=5510 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.718277] audit: type=1800 audit(1541188106.960:22): pid=5510 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 '10.128.0.96' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.096858] kasan: CONFIG_KASAN_INLINE enabled [ 46.101566] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.109177] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.115407] CPU: 0 PID: 5668 Comm: syz-executor976 Not tainted 4.19.0+ #219 [ 46.122484] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.131830] RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 [ 46.137377] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 c2 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 08 48 8d 7b 09 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 72 01 00 00 [ 46.156454] RSP: 0018:ffff8801c2acf3a0 EFLAGS: 00010202 [ 46.161803] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113e4b8 [ 46.169133] RDX: 0000000000000001 RSI: ffffffff854de1a9 RDI: 0000000000000009 [ 46.176394] RBP: ffff8801c2acf3d0 R08: ffff8801c172a040 R09: ffffed00374d7eee [ 46.183646] R10: ffff8801c2acf4c8 R11: ffff8801ba6bf777 R12: ffffc90002551000 [ 46.190895] R13: 0000000000000000 R14: ffff8801d7aafc00 R15: ffff8801d7aafc00 [ 46.198155] FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 46.206449] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 46.212429] CR2: 00000000080a2aa0 CR3: 000000000946a000 CR4: 00000000001406f0 [ 46.219804] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.227061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.234323] Call Trace: [ 46.236916] __vb2_queue_free+0x4b1/0xa30 [ 46.241168] ? vb2_vmalloc_detach_dmabuf+0x80/0x80 [ 46.246087] ? __vb2_plane_dmabuf_put.isra.5+0x310/0x310 [ 46.251524] ? vidioc_querycap+0x110/0x110 [ 46.255739] vb2_core_queue_release+0x62/0x80 [ 46.260220] vb2_queue_release+0x15/0x20 [ 46.264263] v4l2_m2m_ctx_release+0x1e/0x35 [ 46.268675] vicodec_release+0xbd/0x120 [ 46.272756] v4l2_release+0x2f2/0x3a0 [ 46.276540] ? dev_debug_store+0x140/0x140 [ 46.280763] __fput+0x385/0xa30 [ 46.284029] ? get_max_files+0x20/0x20 [ 46.287907] ? trace_hardirqs_on+0xbd/0x310 [ 46.292217] ? kasan_check_read+0x11/0x20 [ 46.296347] ? task_work_run+0x1af/0x2a0 [ 46.300401] ? trace_hardirqs_off_caller+0x310/0x310 [ 46.305500] ____fput+0x15/0x20 [ 46.308772] task_work_run+0x1e8/0x2a0 [ 46.312656] ? task_work_cancel+0x240/0x240 [ 46.316998] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 46.322540] ? switch_task_namespaces+0x9d/0xd0 [ 46.327198] do_exit+0x1ad6/0x26d0 [ 46.330776] ? mm_update_next_owner+0x990/0x990 [ 46.335435] ? find_held_lock+0x36/0x1c0 [ 46.339485] ? __handle_mm_fault+0x4729/0x5be0 [ 46.344073] ? lock_downgrade+0x900/0x900 [ 46.348242] ? kasan_check_read+0x11/0x20 [ 46.352383] ? do_raw_spin_unlock+0xa7/0x330 [ 46.356783] ? do_raw_spin_trylock+0x270/0x270 [ 46.361354] ? v4l_enumstd+0x70/0x70 [ 46.365049] ? do_raw_spin_unlock+0xa7/0x330 [ 46.369446] ? _raw_spin_unlock+0x2c/0x50 [ 46.373582] ? __handle_mm_fault+0xa57/0x5be0 [ 46.378068] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 46.382901] ? find_held_lock+0x36/0x1c0 [ 46.386943] ? zap_class+0x640/0x640 [ 46.390640] ? zap_class+0x640/0x640 [ 46.394346] ? zap_class+0x640/0x640 [ 46.398045] ? find_held_lock+0x36/0x1c0 [ 46.402102] ? __do_page_fault+0x620/0xe60 [ 46.406333] ? lock_downgrade+0x900/0x900 [ 46.410462] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 46.415372] ? kasan_check_read+0x11/0x20 [ 46.419498] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 46.424753] ? rcu_softirq_qs+0x20/0x20 [ 46.428707] ? trace_hardirqs_off_caller+0x310/0x310 [ 46.433794] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 46.439316] ? check_preemption_disabled+0x48/0x280 [ 46.444318] ? kasan_check_write+0x14/0x20 [ 46.448532] ? up_read+0x225/0x2c0 [ 46.452070] do_group_exit+0x177/0x440 [ 46.455943] ? trace_hardirqs_on+0xbd/0x310 [ 46.460342] ? __ia32_sys_exit+0x50/0x50 [ 46.464391] ? trace_hardirqs_off_caller+0x310/0x310 [ 46.469476] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.474998] ? __do_page_fault+0x491/0xe60 [ 46.479213] ? __ia32_compat_sys_ioctl+0x17a/0x630 [ 46.484126] __ia32_sys_exit_group+0x3e/0x50 [ 46.488519] do_fast_syscall_32+0x34d/0xfb2 [ 46.492919] ? do_int80_syscall_32+0x890/0x890 [ 46.497491] ? entry_SYSENTER_compat+0x68/0x7f [ 46.502072] ? trace_hardirqs_off_caller+0xbb/0x310 [ 46.507068] ? syscall_return_slowpath+0x5e0/0x5e0 [ 46.511982] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.516803] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.521622] ? trace_hardirqs_on_caller+0x310/0x310 [ 46.526617] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 46.531613] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.537137] ? prepare_exit_to_usermode+0x291/0x3b0 [ 46.542139] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.546965] entry_SYSENTER_compat+0x70/0x7f [ 46.551362] RIP: 0023:0xf7feea29 [ 46.554718] Code: Bad RIP value. [ 46.558063] RSP: 002b:00000000ff8cfdcc EFLAGS: 00000296 ORIG_RAX: 00000000000000fc [ 46.565749] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000080f0298 [ 46.572995] RDX: 0000000000000000 RSI: 00000000080d9db8 RDI: 00000000080f02a0 [ 46.580243] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 46.587491] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 46.594979] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 46.602236] Modules linked in: [ 46.605641] ---[ end trace 1ba457b00e3704b7 ]--- [ 46.610658] RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 [ 46.616098] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 c2 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 08 48 8d 7b 09 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 72 01 00 00 [ 46.635074] RSP: 0018:ffff8801c2acf3a0 EFLAGS: 00010202 [ 46.640445] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113e4b8 [ 46.647701] RDX: 0000000000000001 RSI: ffffffff854de1a9 RDI: 0000000000000009 [ 46.655003] RBP: ffff8801c2acf3d0 R08: ffff8801c172a040 R09: ffffed00374d7eee [ 46.662285] R10: ffff8801c2acf4c8 R11: ffff8801ba6bf777 R12: ffffc90002551000 [ 46.669591] R13: 0000000000000000 R14: ffff8801d7aafc00 R15: ffff8801d7aafc00 [ 46.676963] FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 46.685253] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 46.691219] CR2: 00000000f7fee9ff CR3: 000000000946a000 CR4: 00000000001406f0 [ 46.698515] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.705776] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.713083] Kernel panic - not syncing: Fatal exception [ 46.719344] Kernel Offset: disabled [ 46.722962] Rebooting in 86400 seconds..