[....] Starting enhanced syslogd: rsyslogd[ 12.411292] audit: type=1400 audit(1513530916.694:5): avc: denied { syslog } for pid=2990 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.648343] audit: type=1400 audit(1513530920.931:6): avc: denied { map } for pid=3129 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 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-8,10.128.0.12' (ECDSA) to the list of known hosts. [ 42.352931] audit: type=1400 audit(1513530946.635:7): avc: denied { map } for pid=3147 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2017/12/17 17:15:46 parsed 1 programs 2017/12/17 17:15:46 executed programs: 0 [ 42.466592] audit: type=1400 audit(1513530946.749:8): avc: denied { map } for pid=3147 comm="syz-execprog" path="/root/syzkaller-shm681192413" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 42.539706] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu 2017/12/17 17:15:51 executed programs: 209 result: failed=false hanged=false err=executor 2: failed: invalid command number 13622315181289262 (errno 110) child failed (errno 1) loop failed (errno 0) invalid command number 13622315181289262 (errno 110) child failed (errno 1) loop failed (errno 0) result: failed=false hanged=false err=executor 1: failed: invalid command number 13622315181289262 (errno 110) child failed (errno 1) loop failed (errno 0) invalid command number 13622315181289262 (errno 110) child failed (errno 1) loop failed (errno 0) [ 51.430721] kasan: CONFIG_KASAN_INLINE enabled [ 51.435358] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.442703] general protection fault: 0000 [#1] SMP KASAN [ 51.448208] Dumping ftrace buffer: [ 51.451714] (ftrace buffer empty) [ 51.455392] Modules linked in: [ 51.458553] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 4.15.0-rc2-mm1+ #39 [ 51.465790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.475119] Workqueue: netns cleanup_net [ 51.479152] RIP: 0010:native_write_cr4+0x4/0x10 [ 51.483787] RSP: 0018:ffff8801db307ca8 EFLAGS: 00010006 [ 51.489118] RAX: ffff8801d98dc580 RBX: 00000000001606e0 RCX: ffffffff811a2d22 [ 51.496877] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 51.504115] RBP: ffff8801db307ca8 R08: 0000000000000003 R09: 0000000000000002 [ 51.511351] R10: 0000000000000000 R11: ffffffff87892d20 R12: 0000000000000006 [ 51.518598] R13: ffff8801d98dc580 R14: ffff8801db31a130 R15: ffff8801db31a130 [ 51.525838] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 51.534030] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.539887] CR2: 00007fa6506b3000 CR3: 0000000006225004 CR4: 00000000001626e0 [ 51.547134] Call Trace: [ 51.549684] [ 51.551807] hardware_disable+0x34a/0x4b0 [ 51.555922] ? irq_work_sync+0x1a0/0x1a0 [ 51.559955] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 51.564417] kvm_arch_hardware_disable+0x35/0xd0 [ 51.569147] hardware_disable_nolock+0x30/0x40 [ 51.573697] flush_smp_call_function_queue+0x1f4/0x570 [ 51.578941] ? cpumask_weight+0x40/0x40 [ 51.582888] ? rcu_idle_exit+0x410/0x410 [ 51.586919] ? __lock_is_held+0xbc/0x140 [ 51.590953] generic_smp_call_function_single_interrupt+0x13/0x30 [ 51.597151] smp_call_function_single_interrupt+0x103/0x640 [ 51.602828] ? smp_call_function_interrupt+0x640/0x640 [ 51.608071] ? _raw_spin_lock+0x32/0x40 [ 51.612015] ? _raw_spin_unlock+0x22/0x30 [ 51.616130] ? handle_edge_irq+0x2b4/0x7c0 [ 51.620331] ? task_prio+0x40/0x40 [ 51.623844] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.628660] call_function_single_interrupt+0xa9/0xb0 [ 51.633812] [ 51.636018] RIP: 0010:lock_acquire+0x256/0x580 [ 51.640574] RSP: 0018:ffff8801d98e6f98 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04 [ 51.648249] RAX: dffffc0000000000 RBX: ffff8801d98dc580 RCX: 0000000000000000 [ 51.655494] RDX: 1ffffffff0c59731 RSI: 00000000544a757f RDI: 0000000000000282 [ 51.662733] RBP: ffff8801d98e7090 R08: 0000000000000003 R09: 0000000000000002 [ 51.669970] R10: 0000000000000000 R11: ffffffff87892d20 R12: 1ffff1003b31cdf9 [ 51.677209] R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 [ 51.684464] ? lock_release+0xda0/0xda0 [ 51.688409] ? rcu_note_context_switch+0x710/0x710 [ 51.693314] inet_twsk_purge+0x39f/0x770 [ 51.697341] ? inet_twsk_purge+0x356/0x770 [ 51.701547] ? evict_inodes+0x580/0x580 [ 51.705492] ? inet_twsk_deschedule_put+0x40/0x40 [ 51.710301] ? free_modinfo_version+0x70/0x70 [ 51.714763] ? __sk_free+0x5c/0x230 [ 51.718358] ? sk_free+0x2f/0x40 [ 51.721695] ? dccp_close+0x6e3/0xc10 [ 51.725467] ? ip_mc_drop_socket+0x1ce/0x230 [ 51.729845] ? inet_release+0xf2/0x1c0 [ 51.733704] ? sock_release+0x16d/0x1e0 [ 51.737644] ? dccp_v6_send_check+0x3d0/0x3d0 [ 51.742112] ? dccp_v6_exit_batch+0x20/0x20 [ 51.746401] dccp_v6_exit_batch+0x1a/0x20 [ 51.750517] ops_exit_list.isra.6+0x100/0x150 [ 51.754984] cleanup_net+0x5c7/0xb60 [ 51.758669] ? unregister_pernet_device+0x80/0x80 [ 51.763478] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.768461] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 51.773190] ? retint_kernel+0x10/0x10 [ 51.777052] ? check_noncircular+0x20/0x20 [ 51.781258] ? lock_acquire+0x256/0x580 [ 51.785201] ? __save_stack_trace+0x6e/0xd0 [ 51.789496] ? __lock_is_held+0xbc/0x140 [ 51.793533] process_one_work+0xbfd/0x1bc0 [ 51.797743] ? pwq_dec_nr_in_flight+0x450/0x450 [ 51.802381] ? finish_task_switch+0x4eb/0x740 [ 51.806858] ? __sched_text_start+0x8/0x8 [ 51.810978] ? lock_downgrade+0x980/0x980 [ 51.815098] ? __wake_up_common+0x42b/0x770 [ 51.819390] ? find_held_lock+0x39/0x1d0 [ 51.823425] ? lock_acquire+0x1d5/0x580 [ 51.827365] ? worker_thread+0x4a3/0x1990 [ 51.831485] ? lock_release+0xda0/0xda0 [ 51.835428] ? worker_pool_assign_id+0x1b0/0x1b0 [ 51.840151] ? do_raw_spin_trylock+0x190/0x190 [ 51.844708] worker_thread+0x223/0x1990 [ 51.848662] ? process_one_work+0x1bc0/0x1bc0 [ 51.853127] ? _raw_spin_unlock_irq+0x27/0x70 [ 51.857590] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.862573] ? trace_hardirqs_on+0xd/0x10 [ 51.866688] ? mmdrop+0x18/0x30 [ 51.869935] ? finish_task_switch+0x1f6/0x740 [ 51.874400] ? copy_overflow+0x20/0x20 [ 51.878261] ? __schedule+0x8f3/0x2060 [ 51.882114] ? check_noncircular+0x20/0x20 [ 51.886320] ? find_held_lock+0x39/0x1d0 [ 51.890354] ? find_held_lock+0x39/0x1d0 [ 51.894387] ? lock_downgrade+0x980/0x980 [ 51.898505] ? default_wake_function+0x30/0x50 [ 51.903057] ? __schedule+0x2060/0x2060 [ 51.906997] ? do_wait_intr_irq+0x3e0/0x3e0 [ 51.911290] ? do_raw_spin_trylock+0x190/0x190 [ 51.915841] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 51.920910] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.925893] ? trace_hardirqs_on+0xd/0x10 [ 51.930010] ? __kthread_parkme+0x175/0x240 [ 51.934299] kthread+0x37a/0x440 [ 51.937633] ? process_one_work+0x1bc0/0x1bc0 [ 51.942093] ? kthread_stop+0x7b0/0x7b0 [ 51.946036] ret_from_fork+0x24/0x30 [ 51.949728] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 51.968822] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db307ca8 [ 51.974936] ---[ end trace 9466fab538efe561 ]--- [ 51.979659] Kernel panic - not syncing: Fatal exception in interrupt [ 51.986147] Dumping ftrace buffer: [ 51.989654] (ftrace buffer empty) [ 51.993328] Kernel Offset: disabled [ 51.996921] Rebooting in 86400 seconds..