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 '10.128.0.30' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.267749] FAULT_INJECTION: forcing a failure. [ 42.267749] name failslab, interval 1, probability 0, space 0, times 1 [ 42.279021] CPU: 0 PID: 4464 Comm: syzkaller713281 Not tainted 4.16.0+ #85 [ 42.286050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.295406] Call Trace: [ 42.298018] dump_stack+0x185/0x1d0 [ 42.301663] should_fail+0x87b/0xab0 [ 42.305378] should_failslab+0x279/0x2a0 [ 42.309446] __kmalloc+0xc2/0x350 [ 42.312905] ? kmsan_set_origin_inline+0x6b/0x120 [ 42.317756] ? tipc_nameseq_create+0x70/0x590 [ 42.322268] tipc_nameseq_create+0x70/0x590 [ 42.326595] tipc_nametbl_subscribe+0x510/0x1330 [ 42.331358] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 42.336858] ? trace_kmalloc+0xb6/0x2b0 [ 42.340870] tipc_subscrb_rcv_cb+0xb6b/0xe80 [ 42.345309] ? tipc_topsrv_start+0x650/0x650 [ 42.349749] tipc_topsrv_kern_subscr+0x4ff/0x610 [ 42.354544] tipc_group_create+0x63e/0x9c0 [ 42.358815] tipc_setsockopt+0x120c/0x1e50 [ 42.363076] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 42.368468] ? __fget_light+0x1f5/0x710 [ 42.372440] ? security_socket_setsockopt+0x5b/0x200 [ 42.377568] ? tipc_shutdown+0x5c0/0x5c0 [ 42.381645] SYSC_setsockopt+0x4b8/0x570 [ 42.385755] SyS_setsockopt+0x76/0xa0 [ 42.389579] do_syscall_64+0x309/0x430 [ 42.393472] ? SYSC_recv+0xe0/0xe0 [ 42.397019] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 42.402215] RIP: 0033:0x440439 [ 42.405395] RSP: 002b:00007ffea32c6348 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 42.413098] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440439 [ 42.420357] RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000003 [ 42.427618] RBP: 00000000006cb018 R08: 000000000000001c R09: 00007ffea32c0036 [ 42.434879] R10: 0000000020b89fe4 R11: 0000000000000246 R12: 0000000000000004 [ 42.442140] R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 [ 42.449465] Name sequence creation failed, no memory [ 42.454603] Failed to create subscription for {65537,0,4294967295} [ 42.462119] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 42.470145] IP: __list_del_entry_valid+0xd1/0x440 [ 42.474974] PGD 0 P4D 0 [ 42.477648] Oops: 0000 [#1] SMP PTI [ 42.481463] Dumping ftrace buffer: [ 42.485001] (ftrace buffer empty) [ 42.488715] Modules linked in: [ 42.491912] CPU: 0 PID: 4464 Comm: syzkaller713281 Not tainted 4.16.0+ #85 [ 42.498908] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.508272] RIP: 0010:__list_del_entry_valid+0xd1/0x440 [ 42.513622] RSP: 0018:ffff8801cba5f678 EFLAGS: 00010286 [ 42.518976] RAX: 0000000000000001 RBX: 00000000be600094 RCX: 0000000000000000 [ 42.526240] RDX: 0000000000000000 RSI: 00000000be600094 RDI: ffffffff83ed1f4a [ 42.533511] RBP: ffff8801cba5f6d0 R08: 0000000000000000 R09: 0000000000000000 [ 42.540769] R10: 0000000000000001 R11: 0000000000000000 R12: ffffffffffffffff [ 42.548042] R13: 0000000000000010 R14: 00000000be600094 R15: 0000000000000000 [ 42.555321] FS: 0000000000000000(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 [ 42.563538] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.569408] CR2: 0000000000000000 CR3: 000000000aa30000 CR4: 00000000001406f0 [ 42.576668] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.583928] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.591184] Call Trace: [ 42.593785] tipc_nametbl_unsubscribe+0x4a1/0xa90 [ 42.598651] ? tipc_subscrb_release_cb+0x61/0x100 [ 42.603489] tipc_subscrb_subscrp_delete+0x399/0x990 [ 42.608585] ? __msan_poison_alloca+0x15c/0x1d0 [ 42.613255] tipc_subscrb_release_cb+0x61/0x100 [ 42.617931] tipc_topsrv_kern_unsubscr+0x54b/0x630 [ 42.622865] ? tipc_subscrb_connect_cb+0x270/0x270 [ 42.627794] tipc_group_delete+0x4c8/0x520 [ 42.632099] ? tipc_group_self+0x16a/0x260 [ 42.636357] tipc_release+0x215/0x1730 [ 42.640279] ? fsnotify+0x493/0x18f0 [ 42.644018] ? __fsnotify_parent+0x132/0x560 [ 42.648434] ? tipc_sock_destruct+0x3b0/0x3b0 [ 42.653079] sock_close+0xe0/0x300 [ 42.656653] __fput+0x49e/0xa10 [ 42.659959] ____fput+0x37/0x40 [ 42.663257] ? fput+0x2e0/0x2e0 [ 42.666549] task_work_run+0x243/0x2c0 [ 42.670445] do_exit+0x10e1/0x38d0 [ 42.674031] do_group_exit+0x1a0/0x360 [ 42.677968] SYSC_exit_group+0x21/0x30 [ 42.681897] SyS_exit_group+0x25/0x30 [ 42.685725] do_syscall_64+0x309/0x430 [ 42.689615] ? do_group_exit+0x360/0x360 [ 42.693680] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 42.698859] RIP: 0033:0x43f0f8 [ 42.702063] RSP: 002b:00007ffea32c6378 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 42.709789] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f0f8 [ 42.717057] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 42.724325] RBP: 00000000004bf1e8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 42.731582] R10: 0000000020b89fe4 R11: 0000000000000246 R12: 0000000000000001 [ 42.738839] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 42.746106] Code: 15 4c 89 f8 4c 31 f0 4c 89 e1 48 f7 d1 48 21 c1 0f 84 76 01 00 00 4d 39 f7 0f 84 7e 01 00 00 41 89 de 4d 85 e4 0f 85 01 02 00 00 <4d> 8b 27 4c 89 ff e8 14 7a cb fd 48 8b 18 44 8b 3a 48 89 d8 48 [ 42.765523] RIP: __list_del_entry_valid+0xd1/0x440 RSP: ffff8801cba5f678 [ 42.772344] CR2: 0000000000000000 [ 42.775792] ---[ end trace 677d488f4f08c961 ]--- [ 42.780545] Kernel panic - not syncing: Fatal exception in interrupt [ 42.787528] Dumping ftrace buffer: [ 42.791053] (ftrace buffer empty) [ 42.794745] Kernel Offset: disabled [ 42.798360] Rebooting in 86400 seconds..