[ 68.220696][ T26] audit: type=1800 audit(1564300627.556:27): pid=10000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 68.242463][ T26] audit: type=1800 audit(1564300627.556:28): pid=10000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.923546][ T26] audit: type=1800 audit(1564300628.316:29): pid=10000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 68.943894][ T26] audit: type=1800 audit(1564300628.316:30): pid=10000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.11' (ECDSA) to the list of known hosts. syzkaller login: [ 167.732100][T10152] IPVS: ftp: loaded support on port[0] = 21 [ 167.775316][T10152] chnl_net:caif_netlink_parms(): no params data found [ 167.799853][T10152] bridge0: port 1(bridge_slave_0) entered blocking state [ 167.807050][T10152] bridge0: port 1(bridge_slave_0) entered disabled state [ 167.814631][T10152] device bridge_slave_0 entered promiscuous mode [ 167.822108][T10152] bridge0: port 2(bridge_slave_1) entered blocking state [ 167.829338][T10152] bridge0: port 2(bridge_slave_1) entered disabled state [ 167.837049][T10152] device bridge_slave_1 entered promiscuous mode [ 167.851442][T10152] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 167.862145][T10152] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 167.878930][T10152] team0: Port device team_slave_0 added [ 167.885434][T10152] team0: Port device team_slave_1 added [ 167.967383][T10152] device hsr_slave_0 entered promiscuous mode [ 168.016162][T10152] device hsr_slave_1 entered promiscuous mode [ 168.091707][T10152] bridge0: port 2(bridge_slave_1) entered blocking state [ 168.099080][T10152] bridge0: port 2(bridge_slave_1) entered forwarding state [ 168.106461][T10152] bridge0: port 1(bridge_slave_0) entered blocking state [ 168.113538][T10152] bridge0: port 1(bridge_slave_0) entered forwarding state [ 168.139485][T10152] 8021q: adding VLAN 0 to HW filter on device bond0 [ 168.150455][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 168.168990][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 168.176689][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 168.184441][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 168.195029][T10152] 8021q: adding VLAN 0 to HW filter on device team0 [ 168.204332][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 168.212934][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 168.220013][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 168.236272][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 168.244617][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 168.251710][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 168.260035][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 168.269710][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 168.277953][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready executing program [ 168.288971][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 168.300553][T10152] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 168.312072][T10152] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 168.320086][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 168.336071][T10152] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 168.364965][ C0] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 273.545731][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 273.552653][ C0] rcu: 0-....: (1 GPs behind) idle=b02/1/0x4000000000000002 softirq=9298/9299 fqs=5250 [ 273.562455][ C0] (t=10502 jiffies g=9921 q=179) [ 273.567463][ C0] NMI backtrace for cpu 0 [ 273.571768][ C0] CPU: 0 PID: 10152 Comm: syz-executor526 Not tainted 5.3.0-rc1-next-20190726 #53 [ 273.580936][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 273.590985][ C0] Call Trace: [ 273.594270][ C0] [ 273.597199][ C0] dump_stack+0x172/0x1f0 [ 273.601537][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 273.606733][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 273.613341][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 273.618982][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 273.624956][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 273.630843][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 273.635943][ C0] ? find_next_bit+0x107/0x130 [ 273.640700][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 273.646241][ C0] ? raise_softirq+0x138/0x340 [ 273.650999][ C0] update_process_times+0x32/0x80 [ 273.656013][ C0] tick_sched_handle+0xa2/0x190 [ 273.660855][ C0] tick_sched_timer+0x53/0x140 [ 273.665610][ C0] __hrtimer_run_queues+0x364/0xe40 [ 273.670809][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 273.676086][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 273.681624][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 273.687339][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 273.693401][ C0] hrtimer_interrupt+0x314/0x770 [ 273.698404][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 273.703947][ C0] apic_timer_interrupt+0xf/0x20 [ 273.708878][ C0] RIP: 0010:native_queued_spin_lock_slowpath+0xaa/0x9f0 [ 273.715805][ C0] Code: 0f 1f 44 00 00 49 89 fe 49 89 fd 41 bc 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 04 00 00 00 48 89 df e8 89 70 53 00 41 0f b6 06 41 38 c5 7c 08 [ 273.735402][ C0] RSP: 0018:ffff8880ae809210 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 273.743814][ C0] RAX: 0000000000000000 RBX: ffff8880966ae108 RCX: ffffffff8159a3d7 [ 273.751778][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880966ae108 [ 273.759739][ C0] RBP: ffff8880ae8092d0 R08: 1ffff11012cd5c21 R09: ffffed1012cd5c22 [ 273.767871][ C0] R10: ffffed1012cd5c21 R11: ffff8880966ae10b R12: 0000000000000001 [ 273.775849][ C0] R13: 0000000000000003 R14: ffffed1012cd5c21 R15: 0000000000000001 [ 273.783911][ C0] ? apic_timer_interrupt+0xa/0x20 [ 273.789020][ C0] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 273.795350][ C0] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 273.801587][ C0] ? mark_held_locks+0xf0/0xf0 [ 273.806346][ C0] do_raw_spin_lock+0x20e/0x2e0 [ 273.811186][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 273.816119][ C0] ? lock_acquire+0x190/0x410 [ 273.820845][ C0] ? release_sock+0x20/0x1c0 [ 273.825429][ C0] ? __kasan_check_read+0x11/0x20 [ 273.830448][ C0] _raw_spin_lock_bh+0x3b/0x50 [ 273.835200][ C0] ? release_sock+0x20/0x1c0 [ 273.839781][ C0] release_sock+0x20/0x1c0 [ 273.844255][ C0] wait_on_pending_writer+0x20f/0x420 [ 273.849660][ C0] ? ip6_rcv_finish+0x1de/0x2f0 [ 273.854501][ C0] ? tls_init+0x560/0x560 [ 273.858849][ C0] ? process_backlog+0x206/0x750 [ 273.863774][ C0] ? net_rx_action+0x508/0x10c0 [ 273.868619][ C0] ? __do_softirq+0x262/0x98c [ 273.873292][ C0] ? prepare_to_wait_exclusive+0x320/0x320 [ 273.879129][ C0] ? inet_release+0xed/0x200 [ 273.884082][ C0] ? inet6_release+0x53/0x80 [ 273.888694][ C0] ? __sock_release+0xce/0x280 [ 273.893459][ C0] ? sock_close+0x1e/0x30 [ 273.897778][ C0] ? __fput+0x2ff/0x890 [ 273.901943][ C0] ? ____fput+0x16/0x20 [ 273.906086][ C0] ? task_work_run+0x145/0x1c0 [ 273.910843][ C0] ? exit_to_usermode_loop+0x316/0x380 [ 273.916299][ C0] tls_sk_proto_cleanup+0x2c5/0x3e0 [ 273.921492][ C0] ? wait_on_pending_writer+0x420/0x420 [ 273.927035][ C0] tls_sk_proto_unhash+0x90/0x3f0 [ 273.932102][ C0] tcp_set_state+0x5b9/0x7d0 [ 273.936691][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 273.943013][ C0] ? __sk_mem_reduce_allocated+0x1b0/0x560 [ 273.948820][ C0] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0 [ 273.954268][ C0] ? __sk_mem_reclaim+0x55/0x70 [ 273.959107][ C0] ? tcp_write_queue_purge+0x5d8/0x1310 [ 273.964710][ C0] ? inet6_sk_rx_dst_set+0x244/0x6f0 [ 273.969992][ C0] tcp_done+0xe2/0x320 [ 273.974054][ C0] tcp_reset+0x132/0x500 [ 273.978288][ C0] tcp_validate_incoming+0xa2d/0x1660 [ 273.983656][ C0] tcp_rcv_established+0x6b5/0x1e70 [ 273.988845][ C0] ? mark_held_locks+0xf0/0xf0 [ 273.993650][ C0] ? sk_filter_trim_cap+0x45f/0xb30 [ 273.998844][ C0] ? tcp_data_queue+0x4860/0x4860 [ 274.003860][ C0] ? do_raw_spin_lock+0x12a/0x2e0 [ 274.008876][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 274.013806][ C0] ? lock_acquire+0x190/0x410 [ 274.018473][ C0] tcp_v6_do_rcv+0x41e/0x12c0 [ 274.023142][ C0] tcp_v6_rcv+0x31f1/0x3500 [ 274.027702][ C0] ? tcp_v6_syn_recv_sock+0x2290/0x2290 [ 274.033281][ C0] ? nf_confirm+0x360/0x4d0 [ 274.037779][ C0] ? mark_held_locks+0xf0/0xf0 [ 274.042532][ C0] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 274.048167][ C0] ip6_input_finish+0x84/0x170 [ 274.052946][ C0] ip6_input+0xe4/0x3f0 [ 274.057094][ C0] ? ip6_input_finish+0x170/0x170 [ 274.062118][ C0] ? __kasan_check_read+0x11/0x20 [ 274.067132][ C0] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 274.073017][ C0] ? lock_downgrade+0x920/0x920 [ 274.077857][ C0] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 274.084175][ C0] ip6_rcv_finish+0x1de/0x2f0 [ 274.088841][ C0] ipv6_rcv+0x10e/0x420 [ 274.092985][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 274.098433][ C0] ? lock_downgrade+0x920/0x920 [ 274.103272][ C0] ? lock_downgrade+0x920/0x920 [ 274.108110][ C0] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 274.113992][ C0] ? trace_hardirqs_off+0x62/0x240 [ 274.119095][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 274.124546][ C0] __netif_receive_skb_one_core+0x113/0x1a0 [ 274.130430][ C0] ? __netif_receive_skb_core+0x3060/0x3060 [ 274.136314][ C0] ? lock_acquire+0x190/0x410 [ 274.140978][ C0] ? process_backlog+0x195/0x750 [ 274.145906][ C0] __netif_receive_skb+0x2c/0x1d0 [ 274.150923][ C0] process_backlog+0x206/0x750 [ 274.155681][ C0] ? lock_acquire+0x190/0x410 [ 274.160350][ C0] ? clockevents_program_event+0x15a/0x370 [ 274.166148][ C0] net_rx_action+0x508/0x10c0 [ 274.170818][ C0] ? napi_complete_done+0x4b0/0x4b0 [ 274.176075][ C0] ? sched_clock+0x2e/0x50 [ 274.180483][ C0] ? kvm_clock_read+0x18/0x30 [ 274.185150][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 274.190515][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 274.196760][ C0] __do_softirq+0x262/0x98c [ 274.201258][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 274.215913][ C0] do_softirq_own_stack+0x2a/0x40 [ 274.221187][ C0] [ 274.224120][ C0] do_softirq.part.0+0x11a/0x170 [ 274.229051][ C0] __local_bh_enable_ip+0x211/0x270 [ 274.234250][ C0] inet_csk_listen_stop+0x1e0/0x850 [ 274.239441][ C0] tcp_close+0xd5b/0x10e0 [ 274.243759][ C0] ? ip_mc_drop_socket+0x211/0x270 [ 274.248861][ C0] ? down_write+0xdf/0x150 [ 274.253272][ C0] inet_release+0xed/0x200 [ 274.258421][ C0] inet6_release+0x53/0x80 [ 274.262833][ C0] __sock_release+0xce/0x280 [ 274.267418][ C0] sock_close+0x1e/0x30 [ 274.271569][ C0] __fput+0x2ff/0x890 [ 274.275543][ C0] ? __sock_release+0x280/0x280 [ 274.280396][ C0] ____fput+0x16/0x20 [ 274.284369][ C0] task_work_run+0x145/0x1c0 [ 274.288953][ C0] exit_to_usermode_loop+0x316/0x380 [ 274.294232][ C0] do_syscall_64+0x65f/0x760 [ 274.298814][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 274.304695][ C0] RIP: 0033:0x406571 [ 274.308586][ C0] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 24 1a 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 274.328179][ C0] RSP: 002b:00007ffc16165630 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 274.336581][ C0] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000406571 [ 274.344574][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 274.352542][ C0] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140 [ 274.360500][ C0] R10: 00007ffc16165660 R11: 0000000000000293 R12: 00007ffc16165690 [ 274.368463][ C0] R13: 00000000006dcc2c R14: 000000000000002d R15: 0000000000000007