[info] Using makefile-style concurrent boot in runlevel 2. [ 28.244999] audit: type=1800 audit(1542300797.682:21): pid=5875 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] 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 syzkaller login: [ 33.448556] sshd (6013) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.10.55' (ECDSA) to the list of known hosts. executing program [ 39.996765] netlink: 'syz-executor675': attribute type 3 has an invalid length. [ 40.004319] netlink: 'syz-executor675': attribute type 2 has an invalid length. [ 40.012491] WARNING: CPU: 1 PID: 6029 at net/netfilter/nfnetlink_cttimeout.c:478 cttimeout_default_get+0x1df/0xb30 [ 40.023128] Kernel panic - not syncing: panic_on_warn set ... [ 40.029014] CPU: 1 PID: 6029 Comm: syz-executor675 Not tainted 4.20.0-rc2+ #113 [ 40.036457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.045858] Call Trace: [ 40.048448] dump_stack+0x244/0x39d [ 40.052068] ? dump_stack_print_info.cold.1+0x20/0x20 [ 40.057256] panic+0x2ad/0x55c [ 40.060439] ? add_taint.cold.5+0x16/0x16 [ 40.064577] ? __warn.cold.8+0x5/0x45 [ 40.068364] ? __warn+0xe8/0x1d0 [ 40.071721] ? cttimeout_default_get+0x1df/0xb30 [ 40.076476] __warn.cold.8+0x20/0x45 [ 40.080190] ? rcu_softirq_qs+0x20/0x20 [ 40.084156] ? cttimeout_default_get+0x1df/0xb30 [ 40.088904] report_bug+0x254/0x2d0 [ 40.092526] do_error_trap+0x11b/0x200 [ 40.096401] do_invalid_op+0x36/0x40 [ 40.100111] ? cttimeout_default_get+0x1df/0xb30 [ 40.104888] invalid_op+0x14/0x20 [ 40.108373] RIP: 0010:cttimeout_default_get+0x1df/0xb30 [ 40.113746] Code: 00 0f 87 8d 00 00 00 41 80 ff 06 0f 84 94 07 00 00 41 80 ff 11 0f 84 6c 07 00 00 41 80 ff 01 0f 84 44 07 00 00 e8 91 f1 20 fb <0f> 0b 41 bd a1 ff ff ff eb 06 41 bd a1 ff ff ff e8 7c f1 20 fb 48 [ 40.132681] RSP: 0018:ffff8881c0cd72b0 EFLAGS: 00010293 [ 40.138587] RAX: ffff8881c1608140 RBX: ffffffff88bf58e0 RCX: ffffffff865e961c [ 40.145850] RDX: 0000000000000000 RSI: ffffffff865e964f RDI: 0000000000000001 [ 40.153177] RBP: ffff8881c0cd73c0 R08: ffff8881c1608140 R09: ffffed103b5e5b67 [ 40.160467] R10: 0000000000000002 R11: ffff8881daf2db3b R12: 0000000000000088 [ 40.167740] R13: ffff8881bedfa040 R14: 0000000000000000 R15: 0000000000000088 [ 40.175035] ? cttimeout_default_get+0x1ac/0xb30 [ 40.179793] ? cttimeout_default_get+0x1df/0xb30 [ 40.184558] ? lock_downgrade+0x900/0x900 [ 40.188714] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 40.193472] ? __lock_is_held+0xb5/0x140 [ 40.197534] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 40.202369] nfnetlink_rcv_msg+0xdd3/0x10c0 [ 40.206716] ? nfnetlink_bind+0x3b0/0x3b0 [ 40.210873] ? __netlink_lookup+0x5b6/0xa90 [ 40.215256] ? find_held_lock+0x36/0x1c0 [ 40.219329] ? netlink_deliver_tap+0x32e/0xf80 [ 40.223936] ? lock_downgrade+0x900/0x900 [ 40.228088] ? check_preemption_disabled+0x48/0x280 [ 40.233106] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 40.238028] ? kasan_check_read+0x11/0x20 [ 40.242167] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 40.247435] ? rcu_softirq_qs+0x20/0x20 [ 40.251401] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.256930] netlink_rcv_skb+0x172/0x440 [ 40.261072] ? nfnetlink_bind+0x3b0/0x3b0 [ 40.265217] ? netlink_ack+0xb80/0xb80 [ 40.269096] ? __netlink_ns_capable+0x100/0x130 [ 40.273756] nfnetlink_rcv+0x1c0/0x4d0 [ 40.277636] ? nfnetlink_rcv_batch+0x19b0/0x19b0 [ 40.282395] ? kasan_check_write+0x14/0x20 [ 40.286619] netlink_unicast+0x5a5/0x760 [ 40.290670] ? netlink_attachskb+0x9a0/0x9a0 [ 40.295185] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.300716] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 40.305723] netlink_sendmsg+0xa18/0xfc0 [ 40.309807] ? netlink_unicast+0x760/0x760 [ 40.314033] ? smack_socket_sendmsg+0xb0/0x190 [ 40.318605] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.324128] ? security_socket_sendmsg+0x94/0xc0 [ 40.328874] ? netlink_unicast+0x760/0x760 [ 40.333098] sock_sendmsg+0xd5/0x120 [ 40.336799] ___sys_sendmsg+0x7fd/0x930 [ 40.340761] ? find_held_lock+0x36/0x1c0 [ 40.344811] ? copy_msghdr_from_user+0x580/0x580 [ 40.349562] ? zap_class+0x640/0x640 [ 40.353267] ? zap_class+0x640/0x640 [ 40.357049] ? zap_class+0x640/0x640 [ 40.360766] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.366289] ? __fget_light+0x2e9/0x430 [ 40.370249] ? fget_raw+0x20/0x20 [ 40.373694] ? __do_page_fault+0x620/0xe60 [ 40.378033] ? lock_downgrade+0x900/0x900 [ 40.382172] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 40.387092] ? kasan_check_read+0x11/0x20 [ 40.391230] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 40.396756] ? sockfd_lookup_light+0xc5/0x160 [ 40.401246] __sys_sendmsg+0x11d/0x280 [ 40.405126] ? __ia32_sys_shutdown+0x80/0x80 [ 40.409527] ? up_read_non_owner+0x100/0x100 [ 40.413928] ? do_syscall_64+0x9a/0x820 [ 40.417892] ? do_syscall_64+0x9a/0x820 [ 40.421856] ? trace_hardirqs_off_caller+0x310/0x310 [ 40.426969] __x64_sys_sendmsg+0x78/0xb0 [ 40.431023] do_syscall_64+0x1b9/0x820 [ 40.434896] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 40.440251] ? syscall_return_slowpath+0x5e0/0x5e0 [ 40.445166] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.450002] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.455011] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.460627] ? prepare_exit_to_usermode+0x291/0x3b0 [ 40.465649] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.470486] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.475660] RIP: 0033:0x4400d9 [ 40.478841] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 40.497778] RSP: 002b:00007ffc979966f8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 40.505484] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 [ 40.512745] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 [ 40.520007] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 40.527269] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960 [ 40.534526] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 40.542842] Kernel Offset: disabled [ 40.546520] Rebooting in 86400 seconds..