Warning: Permanently added '10.128.0.225' (ECDSA) to the list of known hosts. syzkaller login: [ 207.528170][T10136] IPVS: ftp: loaded support on port[0] = 21 [ 207.565825][T10136] chnl_net:caif_netlink_parms(): no params data found [ 207.586117][T10136] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.593386][T10136] bridge0: port 1(bridge_slave_0) entered disabled state [ 207.601052][T10136] device bridge_slave_0 entered promiscuous mode [ 207.608300][T10136] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.616068][T10136] bridge0: port 2(bridge_slave_1) entered disabled state [ 207.623800][T10136] device bridge_slave_1 entered promiscuous mode [ 207.638546][T10136] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 207.649759][T10136] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 207.666133][T10136] team0: Port device team_slave_0 added [ 207.674056][T10136] team0: Port device team_slave_1 added [ 207.733009][T10136] device hsr_slave_0 entered promiscuous mode [ 207.771728][T10136] device hsr_slave_1 entered promiscuous mode [ 207.827244][T10136] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.834538][T10136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 207.841867][T10136] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.848890][T10136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 207.873596][T10136] 8021q: adding VLAN 0 to HW filter on device bond0 [ 207.883780][T10138] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 207.901878][T10138] bridge0: port 1(bridge_slave_0) entered disabled state [ 207.909499][T10138] bridge0: port 2(bridge_slave_1) entered disabled state [ 207.917489][T10138] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 207.927713][T10136] 8021q: adding VLAN 0 to HW filter on device team0 [ 207.936824][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 207.945190][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.952374][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 207.972069][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 207.980268][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.987317][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 207.995138][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 208.003479][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 208.011796][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 208.019791][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 208.028541][T10136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 208.036472][T10138] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 208.051030][T10136] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 208.082390][ C0] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 313.241352][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 313.248009][ C0] rcu: 0-...!: (1 GPs behind) idle=f8a/1/0x4000000000000002 softirq=10462/10462 fqs=3 [ 313.257923][ C0] (t=10501 jiffies g=9973 q=5) [ 313.262768][ C0] rcu: rcu_preempt kthread starved for 10496 jiffies! g9973 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 313.273867][ C0] rcu: RCU grace-period kthread stack dump: [ 313.279743][ C0] rcu_preempt R running task 29120 10 2 0x80004000 [ 313.287647][ C0] Call Trace: [ 313.290967][ C0] __schedule+0x755/0x15b0 [ 313.295386][ C0] ? __sched_text_start+0x8/0x8 [ 313.300235][ C0] schedule+0xa8/0x270 [ 313.304339][ C0] schedule_timeout+0x486/0xc50 [ 313.309184][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 313.314114][ C0] ? usleep_range+0x170/0x170 [ 313.318779][ C0] ? trace_hardirqs_on+0x67/0x240 [ 313.323812][ C0] ? __kasan_check_read+0x11/0x20 [ 313.328836][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 313.334379][ C0] ? swake_up_one+0x60/0x60 [ 313.347298][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 313.352058][ C0] ? rcu_barrier+0x310/0x310 [ 313.356635][ C0] ? trace_hardirqs_on+0x67/0x240 [ 313.361653][ C0] ? __kasan_check_read+0x11/0x20 [ 313.366673][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 313.372906][ C0] ? __kthread_parkme+0x108/0x1c0 [ 313.377917][ C0] ? __kasan_check_read+0x11/0x20 [ 313.382934][ C0] kthread+0x361/0x430 [ 313.387536][ C0] ? rcu_barrier+0x310/0x310 [ 313.392119][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 313.398367][ C0] ret_from_fork+0x24/0x30 [ 313.402783][ C0] NMI backtrace for cpu 0 [ 313.407111][ C0] CPU: 0 PID: 10136 Comm: syz-executor170 Not tainted 5.3.0-rc1-next-20190726 #53 [ 313.416289][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 313.426330][ C0] Call Trace: [ 313.429602][ C0] [ 313.432506][ C0] dump_stack+0x172/0x1f0 [ 313.436833][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 313.442025][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 313.448258][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 313.453890][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 313.459861][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 313.465746][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 313.470858][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 313.476394][ C0] ? raise_softirq+0x138/0x340 [ 313.481150][ C0] update_process_times+0x32/0x80 [ 313.486170][ C0] tick_sched_handle+0xa2/0x190 [ 313.491013][ C0] tick_sched_timer+0x53/0x140 [ 313.495770][ C0] __hrtimer_run_queues+0x364/0xe40 [ 313.500965][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 313.506241][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 313.511776][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 313.517490][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 313.523551][ C0] hrtimer_interrupt+0x314/0x770 [ 313.528486][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 313.534025][ C0] apic_timer_interrupt+0xf/0x20 [ 313.539132][ C0] RIP: 0010:check_memory_region+0x13/0x1a0 [ 313.544936][ C0] Code: 48 89 e5 e8 0f 89 90 05 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 48 85 f6 0f 84 34 01 00 00 48 b8 ff ff ff ff ff 7f ff ff <55> 0f b6 d2 48 39 c7 48 89 e5 41 55 41 54 53 0f 86 07 01 00 00 4c [ 313.564532][ C0] RSP: 0018:ffff8880ae8091f8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 313.572933][ C0] RAX: ffff7fffffffffff RBX: ffff8880a8690d48 RCX: ffffffff8159a3d7 [ 313.580892][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a8690d48 [ 313.588850][ C0] RBP: ffff8880ae809200 R08: 1ffff110150d21a9 R09: ffffed10150d21aa [ 313.596821][ C0] R10: ffffed10150d21a9 R11: ffff8880a8690d4b R12: 0000000000000001 [ 313.604786][ C0] R13: 0000000000000003 R14: ffffed10150d21a9 R15: 0000000000000001 [ 313.612771][ C0] ? apic_timer_interrupt+0xa/0x20 [ 313.617884][ C0] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 313.624211][ C0] ? __kasan_check_read+0x11/0x20 [ 313.629226][ C0] native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 313.635369][ C0] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 313.641604][ C0] ? mark_held_locks+0xf0/0xf0 [ 313.646363][ C0] do_raw_spin_lock+0x20e/0x2e0 [ 313.651206][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 313.656137][ C0] ? lock_acquire+0x190/0x410 [ 313.660847][ C0] ? release_sock+0x20/0x1c0 [ 313.665436][ C0] ? __kasan_check_read+0x11/0x20 [ 313.670456][ C0] _raw_spin_lock_bh+0x3b/0x50 [ 313.675211][ C0] ? release_sock+0x20/0x1c0 [ 313.679876][ C0] release_sock+0x20/0x1c0 [ 313.684336][ C0] wait_on_pending_writer+0x20f/0x420 [ 313.689728][ C0] ? ip6_rcv_finish+0x1de/0x2f0 [ 313.694574][ C0] ? tls_init+0x560/0x560 [ 313.698932][ C0] ? process_backlog+0x206/0x750 [ 313.703865][ C0] ? net_rx_action+0x508/0x10c0 [ 313.708792][ C0] ? __do_softirq+0x262/0x98c [ 313.713467][ C0] ? prepare_to_wait_exclusive+0x320/0x320 [ 313.719342][ C0] ? inet_release+0xed/0x200 [ 313.723961][ C0] ? inet6_release+0x53/0x80 [ 313.728569][ C0] ? __sock_release+0xce/0x280 [ 313.733323][ C0] ? sock_close+0x1e/0x30 [ 313.737644][ C0] ? __fput+0x2ff/0x890 [ 313.741794][ C0] ? ____fput+0x16/0x20 [ 313.745942][ C0] ? task_work_run+0x145/0x1c0 [ 313.750695][ C0] ? exit_to_usermode_loop+0x316/0x380 [ 313.756148][ C0] tls_sk_proto_cleanup+0x2c5/0x3e0 [ 313.761338][ C0] ? wait_on_pending_writer+0x420/0x420 [ 313.766884][ C0] tls_sk_proto_unhash+0x90/0x3f0 [ 313.771940][ C0] tcp_set_state+0x5b9/0x7d0 [ 313.776531][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 313.782766][ C0] ? __sk_mem_reduce_allocated+0x1b0/0x560 [ 313.788565][ C0] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0 [ 313.794018][ C0] ? __sk_mem_reclaim+0x55/0x70 [ 313.798862][ C0] ? tcp_write_queue_purge+0x5d8/0x1310 [ 313.804466][ C0] ? inet6_sk_rx_dst_set+0x244/0x6f0 [ 313.809746][ C0] tcp_done+0xe2/0x320 [ 313.813814][ C0] tcp_reset+0x132/0x500 [ 313.818068][ C0] tcp_validate_incoming+0xa2d/0x1660 [ 313.823439][ C0] tcp_rcv_established+0x6b5/0x1e70 [ 313.828632][ C0] ? mark_held_locks+0xf0/0xf0 [ 313.833456][ C0] ? sk_filter_trim_cap+0x45f/0xb30 [ 313.838656][ C0] ? tcp_data_queue+0x4860/0x4860 [ 313.843672][ C0] ? do_raw_spin_lock+0x12a/0x2e0 [ 313.848687][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 313.853614][ C0] ? lock_acquire+0x190/0x410 [ 313.858287][ C0] tcp_v6_do_rcv+0x41e/0x12c0 [ 313.862961][ C0] tcp_v6_rcv+0x31f1/0x3500 [ 313.867467][ C0] ? tcp_v6_syn_recv_sock+0x2290/0x2290 [ 313.873038][ C0] ? nf_confirm+0x360/0x4d0 [ 313.877535][ C0] ? mark_held_locks+0xf0/0xf0 [ 313.882294][ C0] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 313.887921][ C0] ip6_input_finish+0x84/0x170 [ 313.892671][ C0] ip6_input+0xe4/0x3f0 [ 313.896823][ C0] ? ip6_input_finish+0x170/0x170 [ 313.901837][ C0] ? __kasan_check_read+0x11/0x20 [ 313.906857][ C0] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 313.912736][ C0] ? lock_downgrade+0x920/0x920 [ 313.917582][ C0] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 313.923818][ C0] ip6_rcv_finish+0x1de/0x2f0 [ 313.928485][ C0] ipv6_rcv+0x10e/0x420 [ 313.932648][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 313.938098][ C0] ? lock_downgrade+0x920/0x920 [ 313.942939][ C0] ? lock_downgrade+0x920/0x920 [ 313.947783][ C0] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 313.953679][ C0] ? trace_hardirqs_off+0x62/0x240 [ 313.958781][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 313.964233][ C0] __netif_receive_skb_one_core+0x113/0x1a0 [ 313.970113][ C0] ? __netif_receive_skb_core+0x3060/0x3060 [ 313.975997][ C0] ? lock_acquire+0x190/0x410 [ 313.980664][ C0] ? process_backlog+0x195/0x750 [ 313.985597][ C0] __netif_receive_skb+0x2c/0x1d0 [ 313.990613][ C0] process_backlog+0x206/0x750 [ 313.995365][ C0] ? lock_acquire+0x190/0x410 [ 314.000031][ C0] ? clockevents_program_event+0x15a/0x370 [ 314.005841][ C0] net_rx_action+0x508/0x10c0 [ 314.010513][ C0] ? napi_complete_done+0x4b0/0x4b0 [ 314.015698][ C0] ? sched_clock+0x2e/0x50 [ 314.020104][ C0] ? kvm_clock_read+0x18/0x30 [ 314.024774][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 314.030146][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 314.036380][ C0] __do_softirq+0x262/0x98c [ 314.040875][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 314.046236][ C0] do_softirq_own_stack+0x2a/0x40 [ 314.051240][ C0] [ 314.054169][ C0] do_softirq.part.0+0x11a/0x170 [ 314.059098][ C0] __local_bh_enable_ip+0x211/0x270 [ 314.064293][ C0] inet_csk_listen_stop+0x1e0/0x850 [ 314.069484][ C0] tcp_close+0xd5b/0x10e0 [ 314.073807][ C0] ? ip_mc_drop_socket+0x211/0x270 [ 314.078908][ C0] ? down_write+0xdf/0x150 [ 314.083318][ C0] inet_release+0xed/0x200 [ 314.087725][ C0] inet6_release+0x53/0x80 [ 314.092134][ C0] __sock_release+0xce/0x280 [ 314.096713][ C0] sock_close+0x1e/0x30 [ 314.100881][ C0] __fput+0x2ff/0x890 [ 314.104856][ C0] ? __sock_release+0x280/0x280 [ 314.109698][ C0] ____fput+0x16/0x20 [ 314.113673][ C0] task_work_run+0x145/0x1c0 [ 314.118259][ C0] exit_to_usermode_loop+0x316/0x380 [ 314.123538][ C0] do_syscall_64+0x65f/0x760 [ 314.128124][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 314.134003][ C0] RIP: 0033:0x406571 [ 314.137893][ 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 [ 314.157571][ C0] RSP: 002b:00007fff58191580 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 314.165970][ C0] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000406571 [ 314.173944][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 314.181903][ C0] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140 [ 314.189879][ C0] R10: 00007fff581915b0 R11: 0000000000000293 R12: 00007fff581915e0 [ 314.197836][ C0] R13: 00000000006dcc2c R14: 000000000000002d R15: 0000000000000007