[info] Using makefile-style concurrent boot in runlevel 2. [ 27.942380] audit: type=1800 audit(1542301851.021:21): pid=5879 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 Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 39.573964] netlink: 'syz-executor469': attribute type 3 has an invalid length. [ 39.581638] netlink: 'syz-executor469': attribute type 2 has an invalid length. [ 39.590125] WARNING: CPU: 0 PID: 6037 at net/netfilter/nfnetlink_cttimeout.c:478 cttimeout_default_get+0x1df/0xb30 [ 39.600649] Kernel panic - not syncing: panic_on_warn set ... [ 39.606516] CPU: 0 PID: 6037 Comm: syz-executor469 Not tainted 4.20.0-rc2+ #113 [ 39.613942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.623280] Call Trace: [ 39.625852] dump_stack+0x244/0x39d [ 39.629467] ? dump_stack_print_info.cold.1+0x20/0x20 [ 39.634650] panic+0x2ad/0x55c [ 39.637831] ? add_taint.cold.5+0x16/0x16 [ 39.642013] ? __warn.cold.8+0x5/0x45 [ 39.645806] ? __warn+0xe8/0x1d0 [ 39.649158] ? cttimeout_default_get+0x1df/0xb30 [ 39.653915] __warn.cold.8+0x20/0x45 [ 39.657616] ? rcu_softirq_qs+0x20/0x20 [ 39.661578] ? cttimeout_default_get+0x1df/0xb30 [ 39.666319] report_bug+0x254/0x2d0 [ 39.669936] do_error_trap+0x11b/0x200 [ 39.673808] do_invalid_op+0x36/0x40 [ 39.677505] ? cttimeout_default_get+0x1df/0xb30 [ 39.682247] invalid_op+0x14/0x20 [ 39.685680] RIP: 0010:cttimeout_default_get+0x1df/0xb30 [ 39.691029] 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 [ 39.709912] RSP: 0018:ffff8881b20b72b0 EFLAGS: 00010293 [ 39.715262] RAX: ffff8881c03ea1c0 RBX: ffffffff88bf58e0 RCX: ffffffff865e961c [ 39.722516] RDX: 0000000000000000 RSI: ffffffff865e964f RDI: 0000000000000001 [ 39.729771] RBP: ffff8881b20b73c0 R08: ffff8881c03ea1c0 R09: ffffed103b5c5b67 [ 39.737027] R10: 0000000000000002 R11: ffff8881dae2db3b R12: 0000000000000088 [ 39.744289] R13: ffff8881bbdf1080 R14: 0000000000000000 R15: 0000000000000088 [ 39.751548] ? cttimeout_default_get+0x1ac/0xb30 [ 39.756287] ? cttimeout_default_get+0x1df/0xb30 [ 39.761044] ? lock_downgrade+0x900/0x900 [ 39.765187] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 39.769925] ? __lock_is_held+0xb5/0x140 [ 39.773970] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 39.778721] nfnetlink_rcv_msg+0xdd3/0x10c0 [ 39.783033] ? nfnetlink_bind+0x3b0/0x3b0 [ 39.787166] ? __netlink_lookup+0x5b6/0xa90 [ 39.791468] ? find_held_lock+0x36/0x1c0 [ 39.795528] ? netlink_deliver_tap+0x32e/0xf80 [ 39.800107] ? lock_downgrade+0x900/0x900 [ 39.804253] ? check_preemption_disabled+0x48/0x280 [ 39.809256] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 39.814168] ? kasan_check_read+0x11/0x20 [ 39.818299] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 39.823558] ? rcu_softirq_qs+0x20/0x20 [ 39.827523] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.833077] netlink_rcv_skb+0x172/0x440 [ 39.837127] ? nfnetlink_bind+0x3b0/0x3b0 [ 39.841258] ? netlink_ack+0xb80/0xb80 [ 39.845130] ? __netlink_ns_capable+0x100/0x130 [ 39.849783] nfnetlink_rcv+0x1c0/0x4d0 [ 39.853672] ? nfnetlink_rcv_batch+0x19b0/0x19b0 [ 39.858413] ? kasan_check_write+0x14/0x20 [ 39.862632] netlink_unicast+0x5a5/0x760 [ 39.866676] ? netlink_attachskb+0x9a0/0x9a0 [ 39.871101] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.876639] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 39.881641] netlink_sendmsg+0xa18/0xfc0 [ 39.885690] ? netlink_unicast+0x760/0x760 [ 39.889926] ? smack_socket_sendmsg+0xb0/0x190 [ 39.894511] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.900033] ? security_socket_sendmsg+0x94/0xc0 [ 39.904770] ? netlink_unicast+0x760/0x760 [ 39.908994] sock_sendmsg+0xd5/0x120 [ 39.912694] ___sys_sendmsg+0x7fd/0x930 [ 39.916697] ? find_held_lock+0x36/0x1c0 [ 39.920783] ? copy_msghdr_from_user+0x580/0x580 [ 39.925553] ? zap_class+0x640/0x640 [ 39.929256] ? zap_class+0x640/0x640 [ 39.932961] ? zap_class+0x640/0x640 [ 39.936669] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.942193] ? __fget_light+0x2e9/0x430 [ 39.946154] ? fget_raw+0x20/0x20 [ 39.949615] ? __do_page_fault+0x620/0xe60 [ 39.953868] ? lock_downgrade+0x900/0x900 [ 39.958003] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 39.962936] ? kasan_check_read+0x11/0x20 [ 39.967086] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 39.972617] ? sockfd_lookup_light+0xc5/0x160 [ 39.977099] __sys_sendmsg+0x11d/0x280 [ 39.980996] ? __ia32_sys_shutdown+0x80/0x80 [ 39.985392] ? up_read_non_owner+0x100/0x100 [ 39.989832] ? do_syscall_64+0x9a/0x820 [ 39.993816] ? do_syscall_64+0x9a/0x820 [ 39.997796] ? trace_hardirqs_off_caller+0x310/0x310 [ 40.002887] __x64_sys_sendmsg+0x78/0xb0 [ 40.006932] do_syscall_64+0x1b9/0x820 [ 40.010825] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 40.016172] ? syscall_return_slowpath+0x5e0/0x5e0 [ 40.021090] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.025917] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.030915] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 40.035930] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.041453] ? prepare_exit_to_usermode+0x291/0x3b0 [ 40.046454] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.051289] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.056457] RIP: 0033:0x4400d9 [ 40.059635] 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 [ 40.078563] RSP: 002b:00007ffc33ad8d28 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 40.086362] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 [ 40.093615] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 [ 40.100892] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 40.108148] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960 [ 40.115400] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 40.123771] Kernel Offset: disabled [ 40.127439] Rebooting in 86400 seconds..