Warning: Permanently added '10.128.0.215' (ECDSA) to the list of known hosts. syzkaller login: [ 185.305364][ T9801] IPVS: ftp: loaded support on port[0] = 21 [ 185.346542][ T9801] chnl_net:caif_netlink_parms(): no params data found [ 185.368435][ T9801] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.375767][ T9801] bridge0: port 1(bridge_slave_0) entered disabled state [ 185.383499][ T9801] device bridge_slave_0 entered promiscuous mode [ 185.391294][ T9801] bridge0: port 2(bridge_slave_1) entered blocking state [ 185.398540][ T9801] bridge0: port 2(bridge_slave_1) entered disabled state [ 185.406240][ T9801] device bridge_slave_1 entered promiscuous mode [ 185.419223][ T9801] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 185.429813][ T9801] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 185.445160][ T9801] team0: Port device team_slave_0 added [ 185.451991][ T9801] team0: Port device team_slave_1 added [ 185.500914][ T9801] device hsr_slave_0 entered promiscuous mode [ 185.569575][ T9801] device hsr_slave_1 entered promiscuous mode [ 185.644938][ T9801] bridge0: port 2(bridge_slave_1) entered blocking state [ 185.652238][ T9801] bridge0: port 2(bridge_slave_1) entered forwarding state [ 185.659709][ T9801] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.666764][ T9801] bridge0: port 1(bridge_slave_0) entered forwarding state [ 185.691451][ T9801] 8021q: adding VLAN 0 to HW filter on device bond0 [ 185.702587][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 185.720984][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 185.728752][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 185.736639][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 185.746901][ T9801] 8021q: adding VLAN 0 to HW filter on device team0 [ 185.756024][ T2858] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 185.764567][ T2858] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.771731][ T2858] bridge0: port 1(bridge_slave_0) entered forwarding state [ 185.790736][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 185.799727][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 185.806942][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 185.814882][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 185.823222][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 185.831509][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 185.839771][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 185.848947][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 185.858162][ T9801] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 185.872822][ T9801] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 291.049285][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 291.055994][ C0] rcu: 0-....: (10503 ticks this GP) idle=746/1/0x4000000000000002 softirq=10074/10076 fqs=5247 [ 291.066547][ C0] (t=10500 jiffies g=9113 q=66) [ 291.071474][ C0] NMI backtrace for cpu 0 [ 291.075781][ C0] CPU: 0 PID: 9801 Comm: syz-executor393 Not tainted 5.3.0-rc1-next-20190726 #53 [ 291.084870][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 291.094911][ C0] Call Trace: [ 291.098196][ C0] [ 291.101095][ C0] dump_stack+0x172/0x1f0 [ 291.105401][ C0] nmi_cpu_backtrace.cold+0x70/0xb2 [ 291.110573][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 291.116790][ C0] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 291.122398][ C0] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 291.128368][ C0] arch_trigger_cpumask_backtrace+0x14/0x20 [ 291.134325][ C0] rcu_dump_cpu_stacks+0x183/0x1cf [ 291.139413][ C0] ? find_next_bit+0x107/0x130 [ 291.144156][ C0] rcu_sched_clock_irq.cold+0x4dd/0xc13 [ 291.149782][ C0] ? raise_softirq+0x138/0x340 [ 291.154527][ C0] update_process_times+0x32/0x80 [ 291.159543][ C0] tick_sched_handle+0xa2/0x190 [ 291.164368][ C0] tick_sched_timer+0x53/0x140 [ 291.169289][ C0] __hrtimer_run_queues+0x364/0xe40 [ 291.174467][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 291.179729][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 291.185249][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 291.190944][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 291.197019][ C0] hrtimer_interrupt+0x314/0x770 [ 291.201997][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 291.207539][ C0] apic_timer_interrupt+0xf/0x20 [ 291.212455][ C0] RIP: 0010:native_queued_spin_lock_slowpath+0x132/0x9f0 [ 291.219458][ C0] Code: 00 00 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 37 07 00 00 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 f3 90 73 ff ff ff 8b 45 98 4c 8d 65 d8 3d 00 01 00 00 0f 84 e5 00 00 [ 291.239054][ C0] RSP: 0018:ffff8880ae809210 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 291.247536][ C0] RAX: 0000000000000000 RBX: ffff88809208ed08 RCX: ffffffff8159a3d7 [ 291.255487][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88809208ed08 [ 291.263434][ C0] RBP: ffff8880ae8092d0 R08: 1ffff11012411da1 R09: ffffed1012411da2 [ 291.271403][ C0] R10: ffffed1012411da1 R11: ffff88809208ed0b R12: 0000000000000001 [ 291.279357][ C0] R13: 0000000000000003 R14: ffffed1012411da1 R15: 0000000000000001 [ 291.287314][ C0] ? apic_timer_interrupt+0xa/0x20 [ 291.292500][ C0] ? native_queued_spin_lock_slowpath+0xb7/0x9f0 [ 291.298932][ C0] ? __pv_queued_spin_lock_slowpath+0xd10/0xd10 [ 291.305162][ C0] ? mark_held_locks+0xf0/0xf0 [ 291.309924][ C0] do_raw_spin_lock+0x20e/0x2e0 [ 291.314764][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 291.319675][ C0] ? lock_acquire+0x190/0x410 [ 291.324378][ C0] ? release_sock+0x20/0x1c0 [ 291.328949][ C0] ? __kasan_check_read+0x11/0x20 [ 291.333974][ C0] _raw_spin_lock_bh+0x3b/0x50 [ 291.338719][ C0] ? release_sock+0x20/0x1c0 [ 291.343288][ C0] release_sock+0x20/0x1c0 [ 291.347727][ C0] wait_on_pending_writer+0x20f/0x420 [ 291.353093][ C0] ? ip6_rcv_finish+0x1de/0x2f0 [ 291.357921][ C0] ? tls_init+0x560/0x560 [ 291.362271][ C0] ? process_backlog+0x206/0x750 [ 291.367215][ C0] ? net_rx_action+0x508/0x10c0 [ 291.372058][ C0] ? __do_softirq+0x262/0x98c [ 291.376724][ C0] ? prepare_to_wait_exclusive+0x320/0x320 [ 291.382552][ C0] ? inet_release+0xed/0x200 [ 291.387147][ C0] ? inet6_release+0x53/0x80 [ 291.391731][ C0] ? __sock_release+0xce/0x280 [ 291.396468][ C0] ? sock_close+0x1e/0x30 [ 291.400776][ C0] ? __fput+0x2ff/0x890 [ 291.404911][ C0] ? ____fput+0x16/0x20 [ 291.409047][ C0] ? task_work_run+0x145/0x1c0 [ 291.413811][ C0] ? exit_to_usermode_loop+0x316/0x380 [ 291.419251][ C0] tls_sk_proto_cleanup+0x2c5/0x3e0 [ 291.424431][ C0] ? wait_on_pending_writer+0x420/0x420 [ 291.429963][ C0] tls_sk_proto_unhash+0x90/0x3f0 [ 291.435016][ C0] tcp_set_state+0x5b9/0x7d0 [ 291.439583][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 291.445799][ C0] ? __sk_mem_reduce_allocated+0x1b0/0x560 [ 291.451578][ C0] ? tcp_alloc_md5sig_pool+0x4a0/0x4a0 [ 291.457014][ C0] ? __sk_mem_reclaim+0x55/0x70 [ 291.461843][ C0] ? tcp_write_queue_purge+0x5d8/0x1310 [ 291.467375][ C0] ? lock_downgrade+0x920/0x920 [ 291.472220][ C0] tcp_done+0xe2/0x320 [ 291.476267][ C0] tcp_reset+0x132/0x500 [ 291.480483][ C0] tcp_validate_incoming+0xa2d/0x1660 [ 291.485829][ C0] tcp_rcv_established+0x6b5/0x1e70 [ 291.491003][ C0] ? tcp_data_queue+0x4860/0x4860 [ 291.496061][ C0] tcp_v6_do_rcv+0x41e/0x12c0 [ 291.500717][ C0] tcp_v6_rcv+0x31f1/0x3500 [ 291.505200][ C0] ? tcp_v6_syn_recv_sock+0x2290/0x2290 [ 291.510744][ C0] ? nf_confirm+0x360/0x4d0 [ 291.515223][ C0] ? mark_held_locks+0xf0/0xf0 [ 291.519966][ C0] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 291.525592][ C0] ip6_input_finish+0x84/0x170 [ 291.530331][ C0] ip6_input+0xe4/0x3f0 [ 291.534477][ C0] ? ip6_input_finish+0x170/0x170 [ 291.539480][ C0] ? __kasan_check_read+0x11/0x20 [ 291.544483][ C0] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 291.550353][ C0] ? lock_downgrade+0x920/0x920 [ 291.555192][ C0] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 291.561406][ C0] ip6_rcv_finish+0x1de/0x2f0 [ 291.566058][ C0] ipv6_rcv+0x10e/0x420 [ 291.570188][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 291.575623][ C0] ? lock_downgrade+0x920/0x920 [ 291.580461][ C0] ? lock_downgrade+0x920/0x920 [ 291.585297][ C0] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 291.591164][ C0] ? trace_hardirqs_off+0x62/0x240 [ 291.596249][ C0] ? ip6_rcv_core.isra.0+0x1bb0/0x1bb0 [ 291.602874][ C0] __netif_receive_skb_one_core+0x113/0x1a0 [ 291.608754][ C0] ? __netif_receive_skb_core+0x3060/0x3060 [ 291.614627][ C0] ? lock_acquire+0x190/0x410 [ 291.619285][ C0] ? process_backlog+0x195/0x750 [ 291.624203][ C0] __netif_receive_skb+0x2c/0x1d0 [ 291.629201][ C0] process_backlog+0x206/0x750 [ 291.633939][ C0] ? lock_acquire+0x190/0x410 [ 291.638605][ C0] ? clockevents_program_event+0x15a/0x370 [ 291.644399][ C0] net_rx_action+0x508/0x10c0 [ 291.649058][ C0] ? napi_complete_done+0x4b0/0x4b0 [ 291.654231][ C0] ? sched_clock+0x2e/0x50 [ 291.658631][ C0] ? kvm_clock_read+0x18/0x30 [ 291.663287][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 291.668663][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 291.674886][ C0] __do_softirq+0x262/0x98c [ 291.679381][ C0] ? inet_csk_listen_stop+0x1bc/0x850 [ 291.684726][ C0] do_softirq_own_stack+0x2a/0x40 [ 291.689721][ C0] [ 291.692638][ C0] do_softirq.part.0+0x11a/0x170 [ 291.697550][ C0] __local_bh_enable_ip+0x211/0x270 [ 291.702723][ C0] inet_csk_listen_stop+0x1e0/0x850 [ 291.707899][ C0] tcp_close+0xd5b/0x10e0 [ 291.712216][ C0] ? ip_mc_drop_socket+0x211/0x270 [ 291.717394][ C0] ? down_write+0xdf/0x150 [ 291.721794][ C0] inet_release+0xed/0x200 [ 291.726186][ C0] inet6_release+0x53/0x80 [ 291.730581][ C0] __sock_release+0xce/0x280 [ 291.735151][ C0] sock_close+0x1e/0x30 [ 291.739304][ C0] __fput+0x2ff/0x890 [ 291.743356][ C0] ? __sock_release+0x280/0x280 [ 291.748186][ C0] ____fput+0x16/0x20 [ 291.752158][ C0] task_work_run+0x145/0x1c0 [ 291.756734][ C0] exit_to_usermode_loop+0x316/0x380 [ 291.762012][ C0] do_syscall_64+0x65f/0x760 [ 291.766582][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 291.772446][ C0] RIP: 0033:0x406591 [ 291.776318][ 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 [ 291.795926][ C0] RSP: 002b:00007fff7b05a3f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 291.804318][ C0] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000406591 [ 291.812284][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 291.820240][ C0] RBP: 00000000006dcc20 R08: 0000000000000140 R09: 0000000000000140 [ 291.828186][ C0] R10: 00007fff7b05a420 R11: 0000000000000293 R12: 00007fff7b05a450 [ 291.836241][ C0] R13: 00000000006dcc2c R14: 0000000000000000 R15: 000000000000002d [ 296.459308][ T17] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 11012 jiffies s: 105 root: 0x1/. [ 296.471433][ T17] rcu: blocking rcu_node structures: [ 296.476720][ T17] Task dump for CPU 0: [ 296.481060][ T17] syz-executor393 R running task 24264 9801 9800 0x8000000a [ 296.489031][ T17] Call Trace: [ 296.492519][ T17] ? __kasan_check_read+0x11/0x20 [ 296.497530][ T17] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 296.503911][ T17] ? lock_downgrade+0x920/0x920 [ 296.508756][ T17] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 296.515181][ T17] ? __this_cpu_preempt_check+0x3a/0x210 [ 296.520933][ T17] ? inet_csk_listen_stop+0x1bc/0x850 [ 296.527685][ T17] ? ksoftirqd_running+0x16/0x70 [ 296.535068][ T17] ? inet_csk_listen_stop+0x1bc/0x850 [ 296.540558][ T17] ? do_softirq.part.0+0x11a/0x170 [ 296.545650][ T17] ? __local_bh_enable_ip+0x211/0x270 [ 296.551164][ T17] ? inet_csk_listen_stop+0x1e0/0x850 [ 296.556521][ T17] ? tcp_close+0xd5b/0x10e0 [ 296.561208][ T17] ? ip_mc_drop_socket+0x211/0x270 [ 296.566304][ T17] ? down_write+0xdf/0x150 [ 296.570881][ T17] ? inet_release+0xed/0x200 [ 296.575459][ T17] ? inet6_release+0x53/0x80 [ 296.580194][ T17] ? __sock_release+0xce/0x280 [ 296.584950][ T17] ? sock_close+0x1e/0x30 [ 296.589271][ T17] ? __fput+0x2ff/0x890 [ 296.593605][ T17] ? __sock_release+0x280/0x280 [ 296.598439][ T17] ? ____fput+0x16/0x20 [ 296.602734][ T17] ? task_work_run+0x145/0x1c0 [ 296.607488][ T17] ? exit_to_usermode_loop+0x316/0x380 [ 296.613095][ T17] ? do_syscall_64+0x65f/0x760 [ 296.617845][ T17] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe