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. [ 31.193246] audit: type=1800 audit(1540982760.410:33): pid=5660 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 31.215413] audit: type=1800 audit(1540982760.420:34): pid=5660 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.850310] audit: type=1400 audit(1540982765.070:35): avc: denied { map } for pid=5835 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 [ 35.881302] sshd (5833) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.111' (ECDSA) to the list of known hosts. executing program [ 42.492002] audit: type=1400 audit(1540982771.710:36): avc: denied { map } for pid=5849 comm="syz-executor114" path="/root/syz-executor114563586" 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 [ 42.527803] kasan: CONFIG_KASAN_INLINE enabled [ 42.532461] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.539923] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.546180] CPU: 1 PID: 5849 Comm: syz-executor114 Not tainted 4.19.0+ #91 [ 42.553170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.562524] RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 [ 42.567972] 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 [ 42.586855] RSP: 0018:ffff8801c2d4f408 EFLAGS: 00010202 [ 42.592198] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113e18c [ 42.599451] RDX: 0000000000000001 RSI: ffffffff854c5ac9 RDI: 0000000000000009 [ 42.606702] RBP: ffff8801c2d4f438 R08: ffff8801c1d04100 R09: ffffed00383af6ee [ 42.613953] R10: ffff8801c2d4f530 R11: ffff8801c1d7b777 R12: ffffc900025e5000 [ 42.621203] R13: 0000000000000000 R14: ffff8801bcaa0880 R15: ffff8801bcaa0880 [ 42.628455] FS: 0000000001092880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 42.636691] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.642554] CR2: 000000000043e910 CR3: 000000000946a000 CR4: 00000000001406e0 [ 42.649808] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.657074] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.664352] Call Trace: [ 42.666925] __vb2_queue_free+0x4b1/0xa30 [ 42.671066] ? vb2_vmalloc_detach_dmabuf+0x80/0x80 [ 42.675990] ? __vb2_plane_dmabuf_put.isra.6+0x310/0x310 [ 42.681429] ? vidioc_querycap+0x110/0x110 [ 42.685644] ? dev_debug_store+0x140/0x140 [ 42.689860] vb2_core_queue_release+0x62/0x80 [ 42.694339] vb2_queue_release+0x15/0x20 [ 42.698384] v4l2_m2m_ctx_release+0x1e/0x35 [ 42.702688] vicodec_release+0xbd/0x120 [ 42.706644] v4l2_release+0xfb/0x1a0 [ 42.710339] __fput+0x385/0xa30 [ 42.713651] ? get_max_files+0x20/0x20 [ 42.717530] ? trace_hardirqs_on+0xbd/0x310 [ 42.721836] ? kasan_check_read+0x11/0x20 [ 42.725968] ? task_work_run+0x1af/0x2a0 [ 42.730019] ? trace_hardirqs_off_caller+0x310/0x310 [ 42.735105] ____fput+0x15/0x20 [ 42.738366] task_work_run+0x1e8/0x2a0 [ 42.742236] ? task_work_cancel+0x240/0x240 [ 42.746544] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.752080] ? switch_task_namespaces+0x9d/0xd0 [ 42.756735] do_exit+0x1ad6/0x26d0 [ 42.760261] ? mm_update_next_owner+0x990/0x990 [ 42.764933] ? kvfree+0x66/0x70 [ 42.768197] ? video_usercopy+0x79b/0x1760 [ 42.772426] ? v4l_s_fmt+0x990/0x990 [ 42.776123] ? v4l_enumstd+0x70/0x70 [ 42.779817] ? rcu_softirq_qs+0x20/0x20 [ 42.783777] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.789300] ? avc_has_extended_perms+0xab2/0x15a0 [ 42.794216] ? avc_ss_reset+0x190/0x190 [ 42.798179] ? save_stack+0x43/0xd0 [ 42.801790] ? __kasan_slab_free+0x102/0x150 [ 42.806179] ? kasan_slab_free+0xe/0x10 [ 42.810134] ? kmem_cache_free+0x83/0x290 [ 42.814263] ? do_sys_open+0x54d/0x700 [ 42.818134] ? __x64_sys_open+0x7e/0xc0 [ 42.822090] ? do_syscall_64+0x1b9/0x820 [ 42.826135] ? kasan_check_read+0x11/0x20 [ 42.830264] ? perf_trace_sched_process_exec+0x860/0x860 [ 42.835701] ? video_usercopy+0x1760/0x1760 [ 42.840006] ? video_ioctl2+0x2c/0x33 [ 42.843790] ? v4l2_ioctl+0x15c/0x1b0 [ 42.847573] ? video_devdata+0xa0/0xa0 [ 42.851441] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.856959] ? do_vfs_ioctl+0x201/0x1720 [ 42.861000] ? ioctl_preallocate+0x300/0x300 [ 42.865389] ? selinux_file_mprotect+0x620/0x620 [ 42.870135] ? rcu_read_lock_sched_held+0x14f/0x180 [ 42.875139] ? kmem_cache_free+0x24b/0x290 [ 42.879360] ? putname+0xf7/0x130 [ 42.882801] do_group_exit+0x177/0x440 [ 42.886683] ? trace_hardirqs_on+0xbd/0x310 [ 42.890984] ? __ia32_sys_exit+0x50/0x50 [ 42.895028] ? trace_hardirqs_off_caller+0x310/0x310 [ 42.900113] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.905630] ? ksys_ioctl+0x81/0xd0 [ 42.909241] __x64_sys_exit_group+0x3e/0x50 [ 42.913545] do_syscall_64+0x1b9/0x820 [ 42.917431] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.922781] ? syscall_return_slowpath+0x5e0/0x5e0 [ 42.927694] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.932533] ? trace_hardirqs_on_caller+0x310/0x310 [ 42.937532] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 42.942530] ? prepare_exit_to_usermode+0x291/0x3b0 [ 42.947537] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.952363] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.957533] RIP: 0033:0x442d98 [ 42.960715] Code: Bad RIP value. [ 42.964056] RSP: 002b:00007ffc7d05d558 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 42.971745] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442d98 [ 42.979011] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 42.986261] RBP: 00000000004c2968 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 42.993520] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 43.000774] R13: 00000000006d4180 R14: 0000000000000000 R15: 0000000000000000 [ 43.008027] Modules linked in: [ 43.011944] ---[ end trace 9f902660abfa2c5f ]--- [ 43.017269] RIP: 0010:vb2_vmalloc_put_userptr+0x73/0x250 [ 43.022724] 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 [ 43.041663] RSP: 0018:ffff8801c2d4f408 EFLAGS: 00010202 [ 43.047045] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff113e18c [ 43.054314] RDX: 0000000000000001 RSI: ffffffff854c5ac9 RDI: 0000000000000009 [ 43.061600] RBP: ffff8801c2d4f438 R08: ffff8801c1d04100 R09: ffffed00383af6ee [ 43.068890] R10: ffff8801c2d4f530 R11: ffff8801c1d7b777 R12: ffffc900025e5000 [ 43.076194] R13: 0000000000000000 R14: ffff8801bcaa0880 R15: ffff8801bcaa0880 [ 43.083467] FS: 0000000001092880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 43.091729] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.097629] CR2: 0000000001a03000 CR3: 00000001c6cef000 CR4: 00000000001406f0 [ 43.104883] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.112170] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.119456] Kernel panic - not syncing: Fatal exception [ 43.125704] Kernel Offset: disabled [ 43.129328] Rebooting in 86400 seconds..