INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] 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 '10.128.0.29' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 23.988534] FAULT_INJECTION: forcing a failure. [ 23.988534] name failslab, interval 1, probability 0, space 0, times 1 [ 23.999802] CPU: 0 PID: 4447 Comm: syzkaller851181 Not tainted 4.16.0-rc7+ #374 [ 24.007223] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.016552] Call Trace: [ 24.019120] dump_stack+0x194/0x24d [ 24.022729] ? arch_local_irq_restore+0x53/0x53 [ 24.027383] should_fail+0x8c0/0xa40 [ 24.031075] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 24.036152] ? perf_trace_lock+0x900/0x900 [ 24.040366] ? print_lockdep_cache.isra.32+0x109/0x109 [ 24.045617] ? trace_hardirqs_off+0x10/0x10 [ 24.049919] ? perf_trace_lock_acquire+0x532/0x980 [ 24.054831] ? find_held_lock+0x35/0x1d0 [ 24.058873] ? nametbl_find_seq+0x1d0/0x580 [ 24.063172] ? lock_downgrade+0x980/0x980 [ 24.067299] ? lock_release+0xa40/0xa40 [ 24.071255] should_failslab+0xec/0x120 [ 24.075204] kmem_cache_alloc_trace+0x4b/0x740 [ 24.079764] ? nametbl_find_seq+0x3dd/0x580 [ 24.084065] tipc_nameseq_create+0xad/0x540 [ 24.088360] ? lock_release+0xa40/0xa40 [ 24.092314] ? __tipc_nl_add_monitor+0xf80/0xf80 [ 24.097061] tipc_nametbl_subscribe+0x968/0xcb0 [ 24.101714] ? tipc_nametbl_withdraw+0x6e0/0x6e0 [ 24.106444] ? tipc_subscrb_rcv_cb+0x54f/0xa40 [ 24.111005] ? __lock_is_held+0xb6/0x140 [ 24.115046] ? lock_release+0xa40/0xa40 [ 24.118997] ? tipc_subscrb_rcv_cb+0x398/0xa40 [ 24.123555] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.128555] ? kmem_cache_alloc_trace+0x459/0x740 [ 24.133375] ? tipc_subscrb_rcv_cb+0x54f/0xa40 [ 24.137936] tipc_subscrb_rcv_cb+0x67e/0xa40 [ 24.142322] ? tipc_subscrb_release_cb+0x30/0x30 [ 24.147056] ? lockdep_init_map+0x9/0x10 [ 24.151100] ? __raw_spin_lock_init+0x2d/0x100 [ 24.155657] ? tipc_subscrb_connect_cb+0x1bd/0x270 [ 24.160560] ? tipc_subscrb_put+0x30/0x30 [ 24.164684] ? __lock_is_held+0xb6/0x140 [ 24.168725] ? tipc_subscrb_release_cb+0x30/0x30 [ 24.173454] tipc_topsrv_kern_subscr+0x555/0x8a0 [ 24.178189] ? tipc_receive_from_sock+0x7b0/0x7b0 [ 24.183008] ? memset+0x31/0x40 [ 24.186271] ? tipc_bcast_stop+0x350/0x350 [ 24.190488] tipc_group_create+0x6ed/0x980 [ 24.194702] ? tipc_group_size+0x50/0x50 [ 24.198744] ? mark_held_locks+0xaf/0x100 [ 24.202864] ? do_raw_spin_trylock+0x190/0x190 [ 24.207424] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.212416] ? lock_sock_nested+0x91/0x110 [ 24.216623] ? trace_hardirqs_on+0xd/0x10 [ 24.220745] ? __local_bh_enable_ip+0x121/0x230 [ 24.225392] tipc_setsockopt+0x28a/0xcf0 [ 24.229431] ? tipc_sk_leave+0x200/0x200 [ 24.233476] ? __fdget+0x18/0x20 [ 24.236817] ? security_socket_setsockopt+0x89/0xb0 [ 24.241811] SyS_setsockopt+0x189/0x360 [ 24.245762] ? SyS_recv+0x40/0x40 [ 24.249191] ? SyS_write+0x184/0x220 [ 24.252885] ? SyS_read+0x220/0x220 [ 24.256487] ? do_syscall_64+0xb7/0x940 [ 24.260437] ? SyS_recv+0x40/0x40 [ 24.263865] do_syscall_64+0x281/0x940 [ 24.267732] ? vmalloc_sync_all+0x30/0x30 [ 24.271855] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.276590] ? syscall_return_slowpath+0x550/0x550 [ 24.281495] ? syscall_return_slowpath+0x2ac/0x550 [ 24.286399] ? prepare_exit_to_usermode+0x350/0x350 [ 24.291393] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 24.296736] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.301559] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.306724] RIP: 0033:0x440569 [ 24.309889] RSP: 002b:00007ffde31217b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 24.317582] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440569 [ 24.324827] RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000004 [ 24.332071] RBP: 00000000006cb018 R08: 000000000000001c R09: 00007ffde3120036 [ 24.339315] R10: 00000000204ee000 R11: 0000000000000246 R12: 0000000000000005 [ 24.346559] R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 [ 24.354135] Name sequence creation failed, no memory [ 24.359274] Failed to create subscription for {24576,0,4294967295} [ 24.367671] kasan: CONFIG_KASAN_INLINE enabled [ 24.372329] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.379834] general protection fault: 0000 [#1] SMP KASAN [ 24.385351] Dumping ftrace buffer: [ 24.388859] (ftrace buffer empty) [ 24.392537] Modules linked in: [ 24.395702] CPU: 1 PID: 4447 Comm: syzkaller851181 Not tainted 4.16.0-rc7+ #374 [ 24.403127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.412456] RIP: 0010:__list_del_entry_valid+0x7e/0x150 [ 24.417796] RSP: 0018:ffff8801ae1aef48 EFLAGS: 00010246 [ 24.423128] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 24.430365] RDX: 0000000000000000 RSI: ffff8801cf54c760 RDI: ffff8801cf54c768 [ 24.437606] RBP: ffff8801ae1aef60 R08: 1ffff10035c35cff R09: ffffffff89956150 [ 24.444846] R10: ffff8801ae1aee28 R11: 000000000000168a R12: ffffffff87745ea0 [ 24.452087] R13: ffff8801ae1af100 R14: ffff8801cf54c760 R15: ffff8801cf4c8cc0 [ 24.459327] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 24.467522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.473371] CR2: 000055dce15c3090 CR3: 000000000846a002 CR4: 00000000001606e0 [ 24.480615] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.487861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.495100] Call Trace: [ 24.497662] ? _raw_spin_lock_bh+0x39/0x40 [ 24.501867] tipc_nametbl_unsubscribe+0x318/0x990 [ 24.506681] ? perf_trace_lock+0x900/0x900 [ 24.510884] ? tipc_nametbl_subscribe+0xcb0/0xcb0 [ 24.515698] ? lock_acquire+0x1d5/0x580 [ 24.519643] ? lock_acquire+0x1d5/0x580 [ 24.523587] ? tipc_subscrb_subscrp_delete+0x8f/0x460 [ 24.528746] ? lock_release+0xa40/0xa40 [ 24.532690] ? find_held_lock+0x35/0x1d0 [ 24.536722] ? tipc_conn_lookup+0x78/0x90 [ 24.540841] ? tipc_subscrb_subscrp_delete+0x8f/0x460 [ 24.545999] tipc_subscrb_subscrp_delete+0x1e9/0x460 [ 24.551075] ? mark_held_locks+0xaf/0x100 [ 24.555194] ? __local_bh_enable_ip+0x121/0x230 [ 24.559830] ? tipc_subscrp_put+0x360/0x360 [ 24.564130] ? tipc_conn_lookup+0x78/0x90 [ 24.568247] ? trace_hardirqs_on+0xd/0x10 [ 24.572362] ? __local_bh_enable_ip+0x121/0x230 [ 24.576999] ? tipc_subscrb_subscrp_delete+0x460/0x460 [ 24.582253] tipc_subscrb_release_cb+0x17/0x30 [ 24.586804] tipc_topsrv_kern_unsubscr+0x2c3/0x430 [ 24.591700] ? tipc_dest_del+0x350/0x350 [ 24.595727] ? tipc_topsrv_kern_subscr+0x8a0/0x8a0 [ 24.600626] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 24.605785] ? tipc_node_distr_xmit+0x212/0x2b0 [ 24.610426] tipc_group_delete+0x2c0/0x3d0 [ 24.614630] ? tipc_group_create+0x980/0x980 [ 24.619020] ? __tipc_shutdown+0x916/0xc80 [ 24.623231] ? find_held_lock+0x35/0x1d0 [ 24.627264] ? tipc_sk_respond+0x550/0x550 [ 24.631472] tipc_sk_leave+0x10b/0x200 [ 24.635327] ? tipc_sk_withdraw+0x6b0/0x6b0 [ 24.639618] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.644603] ? lock_sock_nested+0x91/0x110 [ 24.648811] ? __local_bh_enable_ip+0x121/0x230 [ 24.653450] tipc_release+0x154/0xff0 [ 24.657225] ? mntput_no_expire+0x130/0xa90 [ 24.661516] ? tipc_sk_backlog_rcv+0x390/0x390 [ 24.666066] ? lock_release+0xa40/0xa40 [ 24.670016] ? list_lru_count_node+0x70/0x70 [ 24.674401] ? do_raw_spin_trylock+0x190/0x190 [ 24.678953] ? locks_remove_file+0x3fa/0x5a0 [ 24.683338] ? fcntl_setlk+0x1100/0x1100 [ 24.687368] ? fsnotify+0x7b3/0x1140 [ 24.691058] ? fsnotify_first_mark+0x2b0/0x2b0 [ 24.695609] sock_release+0x8d/0x1e0 [ 24.699294] ? sock_alloc_file+0x560/0x560 [ 24.703496] sock_close+0x16/0x20 [ 24.706919] __fput+0x327/0x7e0 [ 24.710167] ? fput+0x140/0x140 [ 24.713420] ? check_same_owner+0x320/0x320 [ 24.717713] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.722651] ____fput+0x15/0x20 [ 24.725904] task_work_run+0x199/0x270 [ 24.729760] ? task_work_cancel+0x210/0x210 [ 24.734055] ? _raw_spin_unlock+0x22/0x30 [ 24.738181] ? switch_task_namespaces+0x87/0xc0 [ 24.742819] do_exit+0x9bb/0x1ad0 [ 24.746241] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.750704] ? finish_task_switch+0x1c1/0x7e0 [ 24.755177] ? mm_update_next_owner+0x930/0x930 [ 24.759816] ? copy_overflow+0x20/0x20 [ 24.763677] ? __schedule+0x903/0x1ec0 [ 24.767536] ? __sched_text_start+0x8/0x8 [ 24.771654] ? __local_bh_enable_ip+0x121/0x230 [ 24.776295] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.781281] ? release_sock+0x1d4/0x2a0 [ 24.785224] ? __local_bh_enable_ip+0x121/0x230 [ 24.789873] ? _raw_spin_unlock_bh+0x30/0x40 [ 24.794253] ? release_sock+0x1d4/0x2a0 [ 24.798196] ? __release_sock+0x360/0x360 [ 24.802314] ? tipc_nametbl_build_group+0x2a0/0x3a0 [ 24.807304] ? schedule+0xf5/0x430 [ 24.810813] ? __schedule+0x1ec0/0x1ec0 [ 24.814764] ? __fdget+0x18/0x20 [ 24.818101] ? security_socket_setsockopt+0x89/0xb0 [ 24.823090] ? exit_to_usermode_loop+0x8c/0x2f0 [ 24.827727] do_group_exit+0x149/0x400 [ 24.831583] ? trace_hardirqs_off+0xd/0x10 [ 24.835798] ? exit_to_usermode_loop+0x198/0x2f0 [ 24.840523] ? SyS_exit+0x30/0x30 [ 24.843949] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 24.849453] ? do_syscall_64+0xb7/0x940 [ 24.853397] ? do_group_exit+0x400/0x400 [ 24.857425] SyS_exit_group+0x1d/0x20 [ 24.861197] do_syscall_64+0x281/0x940 [ 24.865062] ? vmalloc_sync_all+0x30/0x30 [ 24.869178] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.873905] ? syscall_return_slowpath+0x550/0x550 [ 24.878801] ? syscall_return_slowpath+0x2ac/0x550 [ 24.883707] ? prepare_exit_to_usermode+0x350/0x350 [ 24.888696] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 24.894031] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.898847] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.904005] RIP: 0033:0x43f228 [ 24.907170] RSP: 002b:00007ffde31217e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.914845] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f228 [ 24.922088] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 24.929326] RBP: 00000000004bf308 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 24.936564] R10: 00000000204ee000 R11: 0000000000000246 R12: 0000000000000001 [ 24.943806] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 24.951050] Code: 00 00 00 00 ad de 49 39 c4 74 66 48 b8 00 02 00 00 00 00 ad de 48 89 da 48 39 c3 74 65 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 75 7b 48 8b 13 48 39 f2 75 57 49 8d 7c 24 08 48 b8 [ 24.970162] RIP: __list_del_entry_valid+0x7e/0x150 RSP: ffff8801ae1aef48 [ 24.977022] ---[ end trace ba18c1598e2d5535 ]--- [ 24.981784] Kernel panic - not syncing: Fatal exception in interrupt [ 24.988762] Dumping ftrace buffer: [ 24.992274] (ftrace buffer empty) [ 24.995956] Kernel Offset: disabled [ 24.999555] Rebooting in 86400 seconds..