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 '10.128.10.16' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.234053] IPVS: ftp: loaded support on port[0] = 21 [ 25.265121] FAULT_INJECTION: forcing a failure. [ 25.265121] name failslab, interval 1, probability 0, space 0, times 1 [ 25.276396] CPU: 1 PID: 4387 Comm: syzkaller065542 Not tainted 4.16.0-rc7+ #5 [ 25.283646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.292978] Call Trace: [ 25.295547] dump_stack+0x194/0x24d [ 25.299156] ? arch_local_irq_restore+0x53/0x53 [ 25.303835] should_fail+0x8c0/0xa40 [ 25.307531] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 25.312612] ? add_lock_to_list.isra.29+0x24d/0x352 [ 25.317612] ? print_lockdep_cache.isra.32+0x109/0x109 [ 25.322883] ? trace_hardirqs_off+0x10/0x10 [ 25.327179] ? save_stack_trace+0x1a/0x20 [ 25.331302] ? save_trace+0xe0/0x2b0 [ 25.334995] ? perf_trace_lock+0xd6/0x900 [ 25.339136] ? find_held_lock+0x35/0x1d0 [ 25.343182] ? nametbl_find_seq+0x1d0/0x580 [ 25.347490] ? lock_downgrade+0x980/0x980 [ 25.351615] ? lock_release+0xa40/0xa40 [ 25.355574] should_failslab+0xec/0x120 [ 25.359527] kmem_cache_alloc_trace+0x4b/0x740 [ 25.364098] ? nametbl_find_seq+0x3dd/0x580 [ 25.368403] tipc_nameseq_create+0xad/0x540 [ 25.372704] ? lock_release+0xa40/0xa40 [ 25.376665] ? __tipc_nl_add_monitor+0xf80/0xf80 [ 25.381418] tipc_nametbl_subscribe+0x968/0xcb0 [ 25.386079] ? tipc_nametbl_withdraw+0x6e0/0x6e0 [ 25.390814] ? tipc_subscrb_rcv_cb+0x54f/0xa40 [ 25.395993] ? __lock_is_held+0xb6/0x140 [ 25.400035] ? lock_release+0xa40/0xa40 [ 25.403986] ? tipc_subscrb_rcv_cb+0x398/0xa40 [ 25.408543] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.413537] ? kmem_cache_alloc_trace+0x459/0x740 [ 25.418360] ? tipc_subscrb_rcv_cb+0x54f/0xa40 [ 25.422928] tipc_subscrb_rcv_cb+0x67e/0xa40 [ 25.427320] ? tipc_subscrb_release_cb+0x30/0x30 [ 25.432052] ? lockdep_init_map+0x9/0x10 [ 25.436092] ? __raw_spin_lock_init+0x2d/0x100 [ 25.440652] ? tipc_subscrb_connect_cb+0x1bd/0x270 [ 25.445567] ? tipc_subscrb_put+0x30/0x30 [ 25.449803] ? __lock_is_held+0xb6/0x140 [ 25.453850] ? tipc_subscrb_release_cb+0x30/0x30 [ 25.458581] tipc_topsrv_kern_subscr+0x555/0x8a0 [ 25.463336] ? tipc_receive_from_sock+0x7b0/0x7b0 [ 25.468158] ? memset+0x31/0x40 [ 25.471420] ? tipc_bcast_stop+0x350/0x350 [ 25.475640] tipc_group_create+0x6ed/0x980 [ 25.479858] ? tipc_group_size+0x50/0x50 [ 25.483906] ? mark_held_locks+0xaf/0x100 [ 25.488026] ? do_raw_spin_trylock+0x190/0x190 [ 25.492587] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.497578] ? lock_sock_nested+0x91/0x110 [ 25.501806] ? trace_hardirqs_on+0xd/0x10 [ 25.505928] ? __local_bh_enable_ip+0x121/0x230 [ 25.510582] tipc_setsockopt+0x28a/0xcf0 [ 25.514624] ? tipc_sk_leave+0x200/0x200 [ 25.518671] ? __fdget+0x18/0x20 [ 25.522013] ? security_socket_setsockopt+0x89/0xb0 [ 25.527009] SyS_setsockopt+0x189/0x360 [ 25.530963] ? SyS_recv+0x40/0x40 [ 25.534390] ? SyS_write+0x184/0x220 [ 25.538080] ? SyS_read+0x220/0x220 [ 25.541682] ? do_syscall_64+0xb7/0x940 [ 25.545633] ? SyS_recv+0x40/0x40 [ 25.549075] do_syscall_64+0x281/0x940 [ 25.552937] ? __do_page_fault+0xc90/0xc90 [ 25.557145] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.561886] ? syscall_return_slowpath+0x550/0x550 [ 25.566798] ? syscall_return_slowpath+0x2ac/0x550 [ 25.571703] ? prepare_exit_to_usermode+0x350/0x350 [ 25.576695] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 25.582038] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.586873] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.592036] RIP: 0033:0x441999 [ 25.595200] RSP: 002b:00007fff9fb2e298 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 25.602884] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441999 [ 25.610127] RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000003 [ 25.617368] RBP: 0000000000000000 R08: 00000000000003eb R09: 0000000000000036 [ 25.624612] R10: 0000000020000040 R11: 0000000000000246 R12: ffffffffffffffff [ 25.631856] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000 [ 25.639189] Name sequence creation failed, no memory [ 25.644326] Failed to create subscription for {128,0,4294967295} [ 25.677136] kasan: CONFIG_KASAN_INLINE enabled [ 25.681857] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.689247] general protection fault: 0000 [#1] SMP KASAN [ 25.694769] Dumping ftrace buffer: [ 25.698283] (ftrace buffer empty) [ 25.701966] Modules linked in: [ 25.705133] CPU: 1 PID: 4387 Comm: syzkaller065542 Not tainted 4.16.0-rc7+ #5 [ 25.712373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.721706] RIP: 0010:__list_del_entry_valid+0x7e/0x150 [ 25.727040] RSP: 0018:ffff8801b6156f48 EFLAGS: 00010246 [ 25.732410] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 25.739654] RDX: 0000000000000000 RSI: ffff8801d21cb560 RDI: ffff8801d21cb568 [ 25.746902] RBP: ffff8801b6156f60 R08: 1ffff10036c2acff R09: ffffffff88e20190 [ 25.754142] R10: ffff8801b6156e28 R11: 000000000000165a R12: 000060fe24a247f8 [ 25.761390] R13: ffff8801b6157100 R14: ffff8801d21cb560 R15: ffff8801d0050f00 [ 25.768633] FS: 0000000001812940(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 25.776835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.782690] CR2: 00000000004b5a3c CR3: 0000000007a22004 CR4: 00000000001606e0 [ 25.789938] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.797180] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.804419] Call Trace: [ 25.806989] ? _raw_spin_lock_bh+0x39/0x40 [ 25.811199] tipc_nametbl_unsubscribe+0x318/0x990 [ 25.816047] ? tipc_nametbl_subscribe+0xcb0/0xcb0 [ 25.820866] ? lock_acquire+0x1d5/0x580 [ 25.824809] ? lock_acquire+0x1d5/0x580 [ 25.828755] ? tipc_subscrb_subscrp_delete+0x8f/0x460 [ 25.833929] ? lock_release+0xa40/0xa40 [ 25.837877] ? find_held_lock+0x35/0x1d0 [ 25.841914] ? tipc_conn_lookup+0x78/0x90 [ 25.846040] ? tipc_subscrb_subscrp_delete+0x8f/0x460 [ 25.851204] tipc_subscrb_subscrp_delete+0x1e9/0x460 [ 25.856279] ? mark_held_locks+0xaf/0x100 [ 25.860397] ? __local_bh_enable_ip+0x121/0x230 [ 25.865039] ? tipc_subscrp_put+0x360/0x360 [ 25.869330] ? tipc_conn_lookup+0x78/0x90 [ 25.873446] ? trace_hardirqs_on+0xd/0x10 [ 25.877561] ? __local_bh_enable_ip+0x121/0x230 [ 25.882201] ? tipc_subscrb_subscrp_delete+0x460/0x460 [ 25.887454] tipc_subscrb_release_cb+0x17/0x30 [ 25.892026] tipc_topsrv_kern_unsubscr+0x2c3/0x430 [ 25.896925] ? tipc_dest_del+0x350/0x350 [ 25.900965] ? tipc_topsrv_kern_subscr+0x8a0/0x8a0 [ 25.905865] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.911029] ? tipc_node_distr_xmit+0x212/0x2b0 [ 25.915680] tipc_group_delete+0x2c0/0x3d0 [ 25.919895] ? tipc_group_create+0x980/0x980 [ 25.924275] ? __tipc_shutdown+0x916/0xc80 [ 25.928489] ? find_held_lock+0x35/0x1d0 [ 25.932522] ? tipc_sk_respond+0x550/0x550 [ 25.936733] tipc_sk_leave+0x10b/0x200 [ 25.940592] ? tipc_sk_withdraw+0x6b0/0x6b0 [ 25.944886] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.949876] ? lock_sock_nested+0x91/0x110 [ 25.954102] ? __local_bh_enable_ip+0x121/0x230 [ 25.958742] tipc_release+0x154/0xff0 [ 25.962518] ? mntput_no_expire+0x130/0xa90 [ 25.966810] ? tipc_sk_backlog_rcv+0x390/0x390 [ 25.971360] ? lock_release+0xa40/0xa40 [ 25.975305] ? __dentry_kill+0x4ae/0x700 [ 25.979339] ? check_same_owner+0x320/0x320 [ 25.983635] ? locks_remove_file+0x3fa/0x5a0 [ 25.988022] ? fcntl_setlk+0x1100/0x1100 [ 25.992055] ? fsnotify+0x7b3/0x1140 [ 25.995742] ? fsnotify_first_mark+0x2b0/0x2b0 [ 26.000309] sock_release+0x8d/0x1e0 [ 26.003994] ? sock_alloc_file+0x560/0x560 [ 26.008200] sock_close+0x16/0x20 [ 26.011624] __fput+0x327/0x7e0 [ 26.014879] ? fput+0x140/0x140 [ 26.018132] ? check_same_owner+0x320/0x320 [ 26.022427] ____fput+0x15/0x20 [ 26.025676] task_work_run+0x199/0x270 [ 26.029533] ? task_work_cancel+0x210/0x210 [ 26.033827] ? free_nsproxy+0x18b/0x1f0 [ 26.037775] ? switch_task_namespaces+0xa2/0xc0 [ 26.042418] do_exit+0x9bb/0x1ad0 [ 26.045846] ? mm_update_next_owner+0x930/0x930 [ 26.050484] ? reacquire_held_locks+0x1f9/0x3e0 [ 26.055126] ? find_held_lock+0x35/0x1d0 [ 26.059161] ? release_sock+0x1d4/0x2a0 [ 26.063104] ? lock_downgrade+0x980/0x980 [ 26.067230] ? lock_downgrade+0x980/0x980 [ 26.071358] ? lock_release+0xa40/0xa40 [ 26.075302] ? __lockdep_init_map+0xe4/0x650 [ 26.079681] ? __local_bh_enable_ip+0x121/0x230 [ 26.084329] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.089314] ? release_sock+0x1d4/0x2a0 [ 26.093260] ? __local_bh_enable_ip+0x121/0x230 [ 26.097909] ? _raw_spin_unlock_bh+0x30/0x40 [ 26.102286] ? release_sock+0x1d4/0x2a0 [ 26.106240] ? __release_sock+0x360/0x360 [ 26.110359] ? tipc_nametbl_build_group+0x2a0/0x3a0 [ 26.115348] ? tipc_setsockopt+0x7b1/0xcf0 [ 26.119563] ? tipc_sk_leave+0x200/0x200 [ 26.123597] ? __fdget+0x18/0x20 [ 26.126933] ? security_socket_setsockopt+0x89/0xb0 [ 26.131922] ? SyS_setsockopt+0x215/0x360 [ 26.136054] do_group_exit+0x149/0x400 [ 26.139911] ? SyS_recv+0x40/0x40 [ 26.143335] ? SyS_write+0x184/0x220 [ 26.147025] ? SyS_exit+0x30/0x30 [ 26.150450] ? SyS_read+0x220/0x220 [ 26.154053] ? do_syscall_64+0xb7/0x940 [ 26.157997] ? do_group_exit+0x400/0x400 [ 26.162039] SyS_exit_group+0x1d/0x20 [ 26.165815] do_syscall_64+0x281/0x940 [ 26.169671] ? __do_page_fault+0xc90/0xc90 [ 26.173878] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.178604] ? syscall_return_slowpath+0x550/0x550 [ 26.183504] ? syscall_return_slowpath+0x2ac/0x550 [ 26.188403] ? prepare_exit_to_usermode+0x350/0x350 [ 26.193390] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 26.198726] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.203544] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 26.208705] RIP: 0033:0x441999 [ 26.211866] RSP: 002b:00007fff9fb2e2c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 [ 26.219542] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441999 [ 26.226782] RDX: 0000000000441999 RSI: 0000000000000087 RDI: 0000000000000001 [ 26.234025] RBP: 0000000000000000 R08: 0000000000000036 R09: 0000000000000000 [ 26.241265] R10: 00000000000003eb R11: 0000000000000202 R12: 0000000000402ee0 [ 26.248512] R13: 0000000000402f70 R14: 0000000000000000 R15: 0000000000000000 [ 26.255759] 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 [ 26.274832] RIP: __list_del_entry_valid+0x7e/0x150 RSP: ffff8801b6156f48 [ 26.281684] ---[ end trace 15db7481adb88007 ]--- [ 26.286446] Kernel panic - not syncing: Fatal exception in interrupt [ 26.293459] Dumping ftrace buffer: [ 26.296986] (ftrace buffer empty) [ 26.300666] Kernel Offset: disabled [ 26.304282] Rebooting in 86400 seconds..