Warning: Permanently added '10.128.1.55' (ECDSA) to the list of known hosts. syzkaller login: [ 203.429445][T10262] IPVS: ftp: loaded support on port[0] = 21 [ 203.473960][T10262] chnl_net:caif_netlink_parms(): no params data found [ 203.497247][T10262] bridge0: port 1(bridge_slave_0) entered blocking state [ 203.505016][T10262] bridge0: port 1(bridge_slave_0) entered disabled state [ 203.512789][T10262] device bridge_slave_0 entered promiscuous mode [ 203.520665][T10262] bridge0: port 2(bridge_slave_1) entered blocking state [ 203.527938][T10262] bridge0: port 2(bridge_slave_1) entered disabled state [ 203.535680][T10262] device bridge_slave_1 entered promiscuous mode [ 203.552980][T10262] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 203.563491][T10262] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 203.580034][T10262] team0: Port device team_slave_0 added [ 203.587106][T10262] team0: Port device team_slave_1 added [ 203.646531][T10262] device hsr_slave_0 entered promiscuous mode [ 203.695145][T10262] device hsr_slave_1 entered promiscuous mode [ 203.770193][T10262] bridge0: port 2(bridge_slave_1) entered blocking state [ 203.777420][T10262] bridge0: port 2(bridge_slave_1) entered forwarding state [ 203.784773][T10262] bridge0: port 1(bridge_slave_0) entered blocking state [ 203.792034][T10262] bridge0: port 1(bridge_slave_0) entered forwarding state [ 203.818296][T10262] 8021q: adding VLAN 0 to HW filter on device bond0 [ 203.829696][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 203.848617][ T3488] bridge0: port 1(bridge_slave_0) entered disabled state [ 203.856339][ T3488] bridge0: port 2(bridge_slave_1) entered disabled state [ 203.863999][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 203.874636][T10262] 8021q: adding VLAN 0 to HW filter on device team0 [ 203.884430][ T2792] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 203.893114][ T2792] bridge0: port 1(bridge_slave_0) entered blocking state [ 203.900243][ T2792] bridge0: port 1(bridge_slave_0) entered forwarding state [ 203.915818][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 203.924226][ T3488] bridge0: port 2(bridge_slave_1) entered blocking state [ 203.931381][ T3488] bridge0: port 2(bridge_slave_1) entered forwarding state [ 203.939780][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 203.948617][ T3488] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 203.959156][ T2792] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 203.971941][T10262] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 203.982577][T10262] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 203.994300][ T2792] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 204.003162][ T2792] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 204.011770][ T2792] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 204.027236][T10262] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 204.056627][ C1] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 309.234782][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 309.241504][ C1] rcu: 1-....: (1 GPs behind) idle=7fe/1/0x4000000000000002 softirq=10502/10503 fqs=5248 [ 309.251458][ C1] (t=10500 jiffies g=10033 q=21) [ 309.256504][ C1] NMI backtrace for cpu 1 [ 309.260816][ C1] CPU: 1 PID: 10262 Comm: syz-executor430 Not tainted 5.3.0-rc2-next-20190802 #58 [ 309.269981][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 309.280011][ C1] Call Trace: [ 309.283271][ C1] [ 309.286179][ C1] dump_stack+0x172/0x1f0 [ 309.290501][ C1] nmi_cpu_backtrace.cold+0x70/0xb2 [ 309.295686][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 309.301912][ C1] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 309.320265][ C1] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 309.326228][ C1] arch_trigger_cpumask_backtrace+0x14/0x20 [ 309.332134][ C1] rcu_dump_cpu_stacks+0x183/0x1cf [ 309.337228][ C1] ? find_next_bit+0x107/0x130 [ 309.341967][ C1] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 309.347488][ C1] ? raise_softirq+0x138/0x340 [ 309.352227][ C1] update_process_times+0x32/0x80 [ 309.357234][ C1] tick_sched_handle+0xa2/0x190 [ 309.362064][ C1] tick_sched_timer+0x53/0x140 [ 309.366809][ C1] __hrtimer_run_queues+0x364/0xe40 [ 309.371982][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 309.377249][ C1] ? hrtimer_sleeper_start_expires+0x90/0x90 [ 309.383204][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 309.388901][ C1] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 309.394945][ C1] hrtimer_interrupt+0x314/0x770 [ 309.399919][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 309.405449][ C1] apic_timer_interrupt+0xf/0x20 [ 309.410363][ C1] RIP: 0010:check_memory_region+0x49/0x1a0 [ 309.416146][ C1] Code: 41 54 53 0f 86 07 01 00 00 4c 8d 5c 37 ff 49 89 f8 48 b8 00 00 00 00 00 fc ff df 4d 89 da 49 c1 e8 03 4d 8d 24 00 49 c1 ea 03 <49> 01 c2 4c 89 e0 49 8d 5a 01 49 89 d9 4d 29 e1 49 83 f9 10 0f 8e [ 309.435744][ C1] RSP: 0018:ffff8880ae9091d8 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 [ 309.444137][ C1] RAX: dffffc0000000000 RBX: ffff88808efca108 RCX: ffffffff8158f457 [ 309.452089][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88808efca108 [ 309.460040][ C1] RBP: ffff8880ae9091f0 R08: 1ffff11011df9421 R09: ffffed1011df9422 [ 309.467985][ C1] R10: 1ffff11011df9421 R11: ffff88808efca10b R12: ffffed1011df9421 [ 309.475932][ C1] R13: 0000000000000003 R14: ffffed1011df9421 R15: 0000000000000001 [ 309.483904][ C1] ? apic_timer_interrupt+0xa/0x20 [ 309.489015][ C1] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 309.495329][ C1] __kasan_check_read+0x11/0x20 [ 309.500173][ C1] native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 309.506305][ C1] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 309.512523][ C1] ? mark_held_locks+0xf0/0xf0 [ 309.517265][ C1] do_raw_spin_lock+0x20e/0x2e0 [ 309.522093][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 309.527010][ C1] ? lock_acquire+0x190/0x410 [ 309.531706][ C1] ? release_sock+0x20/0x1c0 [ 309.536276][ C1] ? __kasan_check_read+0x11/0x20 [ 309.541276][ C1] _raw_spin_lock_bh+0x3b/0x50 [ 309.546013][ C1] ? release_sock+0x20/0x1c0 [ 309.550574][ C1] release_sock+0x20/0x1c0 [ 309.555026][ C1] wait_on_pending_writer+0x20f/0x420 [ 309.560405][ C1] ? ip6_rcv_finish+0x1de/0x2f0 [ 309.565263][ C1] ? tls_init+0x560/0x560 [ 309.569594][ C1] ? process_backlog+0x206/0x750 [ 309.574509][ C1] ? net_rx_action+0x508/0x10c0 [ 309.579335][ C1] ? __do_softirq+0x262/0x98c [ 309.583988][ C1] ? prepare_to_wait_exclusive+0x320/0x320 [ 309.589836][ C1] ? inet_release+0xed/0x200 [ 309.594431][ C1] ? inet6_release+0x53/0x80 [ 309.599026][ C1] ? __sock_release+0xce/0x280 [ 309.603769][ C1] ? sock_close+0x1e/0x30 [ 309.608071][ C1] ? __fput+0x2ff/0x890 [ 309.612202][ C1] ? ____fput+0x16/0x20 [ 309.616334][ C1] ? task_work_run+0x145/0x1c0 [ 309.621071][ C1] ? exit_to_usermode_loop+0x316/0x380 [ 309.626506][ C1] tls_sk_proto_cleanup+0x2c5/0x3e0 [ 309.631703][ C1] ? wait_on_pending_writer+0x420/0x420 [ 309.637253][ C1] tls_sk_proto_unhash+0x90/0x3f0 [ 309.642300][ C1] tcp_set_state+0x5b9/0x7d0 [ 309.646877][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 309.653095][ C1] ? __sk_mem_reduce_allocated+0x1b0/0x560 [ 309.658894][ C1] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0 [ 309.664329][ C1] ? __sk_mem_reclaim+0x55/0x70 [ 309.669156][ C1] ? tcp_write_queue_purge+0x5d8/0x1310 [ 309.674720][ C1] ? inet6_sk_rx_dst_set+0x244/0x6f0 [ 309.679985][ C1] tcp_done+0xe2/0x320 [ 309.684049][ C1] tcp_reset+0x132/0x500 [ 309.688273][ C1] tcp_validate_incoming+0xa2d/0x1660 [ 309.693647][ C1] tcp_rcv_established+0x6b5/0x1e70 [ 309.698824][ C1] ? mark_held_locks+0xf0/0xf0 [ 309.703626][ C1] ? sk_filter_trim_cap+0x45f/0xb30 [ 309.708806][ C1] ? tcp_data_queue+0x4860/0x4860 [ 309.713820][ C1] ? do_raw_spin_lock+0x12a/0x2e0 [ 309.718820][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 309.723744][ C1] ? lock_acquire+0x190/0x410 [ 309.728400][ C1] tcp_v6_do_rcv+0x41e/0x12c0 [ 309.733058][ C1] tcp_v6_rcv+0x31f1/0x3500 [ 309.737554][ C1] ? tcp_v6_syn_recv_sock+0x2290/0x2290 [ 309.743139][ C1] ? nf_confirm+0x360/0x4d0 [ 309.747626][ C1] ? mark_held_locks+0xf0/0xf0 [ 309.752381][ C1] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 309.757997][ C1] ip6_input_finish+0x84/0x170 [ 309.762734][ C1] ip6_input+0xe4/0x3f0 [ 309.766875][ C1] ? ip6_input_finish+0x170/0x170 [ 309.771900][ C1] ? __kasan_check_read+0x11/0x20 [ 309.776902][ C1] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 309.782771][ C1] ? lock_downgrade+0x920/0x920 [ 309.787598][ C1] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 309.793814][ C1] ip6_rcv_finish+0x1de/0x2f0 [ 309.798469][ C1] ipv6_rcv+0x10e/0x420 [ 309.802598][ C1] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 309.808036][ C1] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 309.813905][ C1] ? call_timer_fn+0xe0/0x780 [ 309.818556][ C1] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 309.823988][ C1] __netif_receive_skb_one_core+0x113/0x1a0 [ 309.829856][ C1] ? __netif_receive_skb_core+0x3060/0x3060 [ 309.835726][ C1] ? lock_acquire+0x190/0x410 [ 309.840376][ C1] ? process_backlog+0x195/0x750 [ 309.845289][ C1] __netif_receive_skb+0x2c/0x1d0 [ 309.850288][ C1] process_backlog+0x206/0x750 [ 309.855027][ C1] ? rebalance_domains+0x2c6/0xba0 [ 309.860118][ C1] net_rx_action+0x508/0x10c0 [ 309.864782][ C1] ? napi_complete_done+0x4b0/0x4b0 [ 309.869965][ C1] ? sched_clock+0x2e/0x50 [ 309.874400][ C1] ? inet_csk_listen_stop+0x1bc/0x850 [ 309.879768][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 309.886002][ C1] __do_softirq+0x262/0x98c [ 309.890485][ C1] ? inet_csk_listen_stop+0x1bc/0x850 [ 309.895835][ C1] do_softirq_own_stack+0x2a/0x40 [ 309.900838][ C1] [ 309.903751][ C1] do_softirq.part.0+0x11a/0x170 [ 309.908665][ C1] __local_bh_enable_ip+0x211/0x270 [ 309.913843][ C1] inet_csk_listen_stop+0x1e0/0x850 [ 309.919018][ C1] tcp_close+0xd5b/0x10e0 [ 309.923326][ C1] ? ip_mc_drop_socket+0x211/0x270 [ 309.928409][ C1] ? down_write+0xdf/0x150 [ 309.932803][ C1] inet_release+0xed/0x200 [ 309.937198][ C1] inet6_release+0x53/0x80 [ 309.941587][ C1] __sock_release+0xce/0x280 [ 309.946173][ C1] sock_close+0x1e/0x30 [ 309.950319][ C1] __fput+0x2ff/0x890 [ 309.954280][ C1] ? __sock_release+0x280/0x280 [ 309.959105][ C1] ____fput+0x16/0x20 [ 309.963065][ C1] task_work_run+0x145/0x1c0 [ 309.967637][ C1] exit_to_usermode_loop+0x316/0x380 [ 309.972894][ C1] do_syscall_64+0x65f/0x760 [ 309.977479][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 309.983345][ C1] RIP: 0033:0x406571 [ 309.987240][ C1] 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 [ 310.006821][ C1] RSP: 002b:00007ffd9f340390 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 310.015209][ C1] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000406571 [ 310.023152][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 310.031107][ C1] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140 [ 310.039085][ C1] R10: 00007ffd9f3403c0 R11: 0000000000000293 R12: 00007ffd9f3403f0 [ 310.047036][ C1] R13: 00000000006dcc2c R14: 000000000000002d R15: 0000000000000007 [ 311.655076][T10266] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-... } 10719 jiffies s: 105 root: 0x2/. [ 311.667285][T10266] rcu: blocking rcu_node structures: [ 311.672582][T10266] Task dump for CPU 1: [ 311.677026][T10266] syz-executor430 R running task 24184 10262 10261 0x8000000a [ 311.685748][T10266] Call Trace: [ 311.689047][T10266] ? __kasan_check_read+0x11/0x20 [ 311.694079][T10266] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 311.700707][T10266] ? lock_downgrade+0x920/0x920 [ 311.706338][T10266] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 311.712611][T10266] ? __this_cpu_preempt_check+0x3a/0x210 [ 311.718614][T10266] ? inet_csk_listen_stop+0x1bc/0x850 [ 311.724010][T10266] ? ksoftirqd_running+0x16/0x70 [ 311.729811][T10266] ? inet_csk_listen_stop+0x1bc/0x850 [ 311.735488][T10266] ? do_softirq.part.0+0x11a/0x170 [ 311.740625][T10266] ? __local_bh_enable_ip+0x211/0x270 [ 311.746848][T10266] ? inet_csk_listen_stop+0x1e0/0x850 [ 311.752250][T10266] ? tcp_close+0xd5b/0x10e0 [ 311.757106][T10266] ? ip_mc_drop_socket+0x211/0x270 [ 311.762235][T10266] ? down_write+0xdf/0x150 [ 311.767553][T10266] ? inet_release+0xed/0x200 [ 311.772195][T10266] ? inet6_release+0x53/0x80 [ 311.777144][T10266] ? __sock_release+0xce/0x280 [ 311.781946][T10266] ? sock_close+0x1e/0x30 [ 311.787206][T10266] ? __fput+0x2ff/0x890 [ 311.791414][T10266] ? __sock_release+0x280/0x280 [ 311.796655][T10266] ? ____fput+0x16/0x20 [ 311.800823][T10266] ? task_work_run+0x145/0x1c0 [ 311.806433][T10266] ? exit_to_usermode_loop+0x316/0x380 [ 311.811915][T10266] ? do_syscall_64+0x65f/0x760 [ 311.817044][T10266] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe