[info] Using makefile-style concurrent boot in runlevel 2. [ 26.973418] audit: type=1800 audit(1542299925.561:21): pid=5874 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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: [ 32.746692] sshd (6012) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.99' (ECDSA) to the list of known hosts. executing program [ 44.442381] netlink: 'syz-executor418': attribute type 3 has an invalid length. [ 44.450305] netlink: 'syz-executor418': attribute type 2 has an invalid length. [ 44.458381] WARNING: CPU: 1 PID: 6029 at net/netfilter/nfnetlink_cttimeout.c:478 cttimeout_default_get+0x1df/0xb30 [ 44.468915] Kernel panic - not syncing: panic_on_warn set ... [ 44.474804] CPU: 1 PID: 6029 Comm: syz-executor418 Not tainted 4.20.0-rc2+ #186 [ 44.482235] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.491581] Call Trace: [ 44.494158] dump_stack+0x244/0x39d [ 44.497780] ? dump_stack_print_info.cold.1+0x20/0x20 [ 44.503051] panic+0x2ad/0x55c [ 44.506228] ? add_taint.cold.5+0x16/0x16 [ 44.510362] ? __warn.cold.8+0x5/0x45 [ 44.514206] ? __warn+0xe8/0x1d0 [ 44.517577] ? cttimeout_default_get+0x1df/0xb30 [ 44.522333] __warn.cold.8+0x20/0x45 [ 44.526036] ? rcu_softirq_qs+0x20/0x20 [ 44.530056] ? cttimeout_default_get+0x1df/0xb30 [ 44.534934] report_bug+0x254/0x2d0 [ 44.538554] do_error_trap+0x11b/0x200 [ 44.542428] do_invalid_op+0x36/0x40 [ 44.546248] ? cttimeout_default_get+0x1df/0xb30 [ 44.550993] invalid_op+0x14/0x20 [ 44.554437] RIP: 0010:cttimeout_default_get+0x1df/0xb30 [ 44.559799] 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 e1 20 fb <0f> 0b 41 bd a1 ff ff ff eb 06 41 bd a1 ff ff ff e8 7c e1 20 fb 48 [ 44.578996] RSP: 0018:ffff8881c1e772b0 EFLAGS: 00010293 [ 44.584343] RAX: ffff8881c174c300 RBX: ffffffff88bf58e0 RCX: ffffffff865ea61c [ 44.591597] RDX: 0000000000000000 RSI: ffffffff865ea64f RDI: 0000000000000001 [ 44.598853] RBP: ffff8881c1e773c0 R08: ffff8881c174c300 R09: ffffed103b5e5b67 [ 44.606155] R10: 0000000000000002 R11: ffff8881daf2db3b R12: 0000000000000088 [ 44.614729] R13: ffff8881b8025340 R14: 0000000000000000 R15: 0000000000000088 [ 44.622001] ? cttimeout_default_get+0x1ac/0xb30 [ 44.626749] ? cttimeout_default_get+0x1df/0xb30 [ 44.631504] ? lock_downgrade+0x900/0x900 [ 44.635643] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 44.640388] ? __lock_is_held+0xb5/0x140 [ 44.644442] ? cttimeout_new_timeout+0x8c0/0x8c0 [ 44.649189] nfnetlink_rcv_msg+0xdd3/0x10c0 [ 44.653509] ? nfnetlink_bind+0x3b0/0x3b0 [ 44.657650] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.663177] ? refcount_sub_and_test_checked+0x203/0x310 [ 44.668623] ? refcount_inc_not_zero_checked+0x2f0/0x2f0 [ 44.674067] ? netlink_deliver_tap+0x32e/0xf80 [ 44.678732] ? lock_downgrade+0x900/0x900 [ 44.682869] ? check_preemption_disabled+0x48/0x280 [ 44.687891] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 44.693419] ? apparmor_capable+0x355/0x6c0 [ 44.697726] ? rcu_softirq_qs+0x20/0x20 [ 44.701687] ? apparmor_cred_transfer+0x590/0x590 [ 44.706520] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.712049] netlink_rcv_skb+0x172/0x440 [ 44.716211] ? nfnetlink_bind+0x3b0/0x3b0 [ 44.720354] ? netlink_ack+0xb80/0xb80 [ 44.724477] ? __netlink_ns_capable+0x100/0x130 [ 44.729242] nfnetlink_rcv+0x1c0/0x4d0 [ 44.733127] ? nfnetlink_rcv_batch+0x19b0/0x19b0 [ 44.737875] ? kasan_check_write+0x14/0x20 [ 44.742093] netlink_unicast+0x5a5/0x760 [ 44.746141] ? netlink_attachskb+0x9a0/0x9a0 [ 44.750536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.756063] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 44.761067] netlink_sendmsg+0xa18/0xfc0 [ 44.765117] ? netlink_unicast+0x760/0x760 [ 44.769336] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 44.774252] ? apparmor_socket_sendmsg+0x29/0x30 [ 44.778994] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.784516] ? security_socket_sendmsg+0x94/0xc0 [ 44.789256] ? netlink_unicast+0x760/0x760 [ 44.793481] sock_sendmsg+0xd5/0x120 [ 44.797182] ___sys_sendmsg+0x7fd/0x930 [ 44.801140] ? find_held_lock+0x36/0x1c0 [ 44.805337] ? copy_msghdr_from_user+0x580/0x580 [ 44.810083] ? zap_class+0x640/0x640 [ 44.813798] ? zap_class+0x640/0x640 [ 44.817499] ? zap_class+0x640/0x640 [ 44.821203] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.826724] ? __fget_light+0x2e9/0x430 [ 44.830683] ? fget_raw+0x20/0x20 [ 44.834126] ? __do_page_fault+0x620/0xe60 [ 44.838349] ? lock_downgrade+0x900/0x900 [ 44.842483] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 44.847399] ? kasan_check_read+0x11/0x20 [ 44.851538] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 44.857062] ? sockfd_lookup_light+0xc5/0x160 [ 44.861544] __sys_sendmsg+0x11d/0x280 [ 44.865419] ? __ia32_sys_shutdown+0x80/0x80 [ 44.870150] ? up_read_non_owner+0x100/0x100 [ 44.874553] ? do_syscall_64+0x9a/0x820 [ 44.878590] ? do_syscall_64+0x9a/0x820 [ 44.882564] ? trace_hardirqs_off_caller+0x310/0x310 [ 44.887659] __x64_sys_sendmsg+0x78/0xb0 [ 44.891817] do_syscall_64+0x1b9/0x820 [ 44.895696] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 44.901165] ? syscall_return_slowpath+0x5e0/0x5e0 [ 44.906086] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.910919] ? trace_hardirqs_on_caller+0x310/0x310 [ 44.915935] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 44.920945] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.926469] ? prepare_exit_to_usermode+0x291/0x3b0 [ 44.931472] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.936303] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.941475] RIP: 0033:0x4400d9 [ 44.944657] 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 [ 44.963546] RSP: 002b:00007fff4427b8c8 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 44.971241] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 [ 44.978502] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 [ 44.985817] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 44.993087] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960 [ 45.000345] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 45.008746] Kernel Offset: disabled [ 45.012417] Rebooting in 86400 seconds..