Warning: Permanently added '10.128.0.40' (ECDSA) to the list of known hosts. syzkaller login: [ 49.288152] IPVS: ftp: loaded support on port[0] = 21 [ 49.450854] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.458008] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.465712] device bridge_slave_0 entered promiscuous mode [ 49.485689] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.492305] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.500232] device bridge_slave_1 entered promiscuous mode [ 49.517872] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 49.537346] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 49.587296] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 49.607998] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 49.688116] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 49.695826] team0: Port device team_slave_0 added [ 49.712681] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 49.720327] team0: Port device team_slave_1 added [ 49.738785] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.760578] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.779740] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 49.800594] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 49.948716] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.955485] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.962537] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.969065] bridge0: port 1(bridge_slave_0) entered forwarding state RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 50.494555] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.547789] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 50.600580] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 50.607358] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 50.615522] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.665957] 8021q: adding VLAN 0 to HW filter on device team0 executing program [ 50.991122] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:425/tfrc_rx_hist_sample_rtt() [ 51.004502] CPU: 0 PID: 5899 Comm: syz-executor288 Not tainted 4.19.0+ #280 [ 51.011598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.020968] Call Trace: [ 51.023542] [ 51.025685] dump_stack+0x244/0x39d [ 51.029305] ? dump_stack_print_info.cold.1+0x20/0x20 [ 51.034487] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.040019] ? tfrc_rx_handle_loss+0x67b/0x1eb0 [ 51.044695] tfrc_rx_hist_sample_rtt.cold.3+0x54/0x5c [ 51.049900] ccid3_hc_rx_packet_recv+0x5c4/0xeb0 [ 51.054661] ? dccp_parse_options+0x4a1/0x12f0 [ 51.059238] ? ccid3_first_li+0x400/0x400 [ 51.063392] dccp_deliver_input_to_ccids+0xf0/0x280 [ 51.068432] dccp_rcv_established+0x87/0xb0 [ 51.072748] dccp_v4_do_rcv+0x153/0x180 [ 51.076717] __sk_receive_skb+0x3e5/0xec0 [ 51.080860] ? sk_free+0x50/0x50 [ 51.084222] ? inet_lhash2_lookup+0x6e0/0x6e0 [ 51.088709] ? reqsk_fastopen_remove+0x660/0x660 [ 51.093459] ? lock_downgrade+0x900/0x900 [ 51.097602] ? check_preemption_disabled+0x48/0x280 [ 51.102621] ? dccp_invalid_packet+0x64/0x880 [ 51.107147] dccp_v4_rcv+0x10f9/0x1f58 [ 51.111044] ? dccp_v4_err+0x18a0/0x18a0 [ 51.115112] ? __lock_is_held+0xb5/0x140 [ 51.119271] ip_local_deliver_finish+0x2e9/0xda0 [ 51.124122] ? ip_sublist_rcv_finish+0x3a0/0x3a0 [ 51.128913] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 51.133929] ? nf_hook_slow+0x11e/0x1c0 [ 51.137904] ip_local_deliver+0x1e9/0x750 [ 51.142094] ? ip_call_ra_chain+0x730/0x730 [ 51.146419] ? ip_sublist_rcv_finish+0x3a0/0x3a0 [ 51.151187] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 51.156115] ? kasan_check_read+0x11/0x20 [ 51.160269] ? rcu_softirq_qs+0x20/0x20 [ 51.164241] ip_rcv_finish+0x1f9/0x300 [ 51.168172] ip_rcv+0xed/0x600 [ 51.171362] ? __lock_acquire+0x62f/0x4c20 [ 51.175681] ? ip_local_deliver+0x750/0x750 [ 51.180015] ? ip_rcv_finish_core.isra.16+0x1f40/0x1f40 [ 51.185380] ? lock_acquire+0x1ed/0x520 [ 51.189394] ? process_backlog+0x1dd/0x7a0 [ 51.193628] __netif_receive_skb_one_core+0x14d/0x200 [ 51.198817] ? __netif_receive_skb_core+0x3b30/0x3b30 [ 51.204080] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 51.209358] ? rcu_softirq_qs+0x20/0x20 [ 51.213378] ? trace_hardirqs_off_caller+0x310/0x310 [ 51.218487] __netif_receive_skb+0x2c/0x1e0 [ 51.222808] process_backlog+0x24e/0x7a0 [ 51.226874] net_rx_action+0x7fa/0x19b0 [ 51.230859] ? napi_complete_done+0x7a0/0x7a0 [ 51.235409] ? find_held_lock+0x36/0x1c0 [ 51.239475] ? __run_timers+0xa20/0xc70 [ 51.243454] ? _raw_spin_unlock_irq+0x27/0x80 [ 51.247948] ? _raw_spin_unlock_irq+0x27/0x80 [ 51.252476] ? lockdep_hardirqs_on+0x296/0x5b0 [ 51.257127] ? trace_hardirqs_on+0xbd/0x310 [ 51.261506] ? kasan_check_read+0x11/0x20 [ 51.265657] ? __run_timers+0xa20/0xc70 [ 51.269634] ? enqueue_hrtimer+0x1a5/0x560 [ 51.273876] ? _raw_spin_unlock_irq+0x60/0x80 [ 51.278597] ? __run_timers+0xa4a/0xc70 [ 51.282744] ? timer_fixup_init+0x70/0x70 [ 51.286898] ? lock_downgrade+0x900/0x900 [ 51.291054] ? zap_class+0x640/0x640 [ 51.294776] ? print_usage_bug+0xc0/0xc0 [ 51.298886] ? trace_hardirqs_on+0x310/0x310 [ 51.303363] ? kvm_clock_read+0x18/0x30 [ 51.307527] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 51.312655] ? ktime_get+0x2c1/0x400 [ 51.316423] ? zap_class+0x640/0x640 [ 51.320143] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.325737] ? check_preemption_disabled+0x48/0x280 [ 51.330766] ? __lock_is_held+0xb5/0x140 [ 51.334838] __do_softirq+0x308/0xb7e [ 51.338697] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.344254] ? __irqentry_text_end+0x1f9658/0x1f9658 [ 51.349419] ? smp_reschedule_interrupt+0x109/0x650 [ 51.354533] ? smp_thermal_interrupt+0x850/0x850 [ 51.359370] ? ret_from_intr+0xb/0x1e [ 51.363192] ? trace_hardirqs_off_caller+0xbb/0x310 [ 51.368279] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.373179] ? trace_hardirqs_on_caller+0x310/0x310 [ 51.378198] ? task_prio+0x50/0x50 [ 51.381741] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.387282] ? check_preemption_disabled+0x48/0x280 [ 51.392301] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.397147] ? ip_finish_output2+0xa83/0x1860 [ 51.401647] do_softirq_own_stack+0x2a/0x40 [ 51.405990] [ 51.408230] do_softirq.part.14+0x126/0x160 [ 51.412612] __local_bh_enable_ip+0x21d/0x260 [ 51.417263] ip_finish_output2+0xab6/0x1860 [ 51.421587] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 51.426518] ? ip_copy_metadata+0xe10/0xe10 [ 51.430845] ? zap_class+0x640/0x640 [ 51.434565] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.440105] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.445640] ? ipv4_mtu+0x39f/0x590 [ 51.449270] ? __lock_is_held+0xb5/0x140 [ 51.453742] ip_finish_output+0x7fd/0xfa0 [ 51.457903] ? ip_finish_output+0x7fd/0xfa0 [ 51.462230] ? ip_fragment.constprop.50+0x240/0x240 [ 51.467255] ? kasan_check_read+0x11/0x20 [ 51.471456] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 51.476737] ? rcu_softirq_qs+0x20/0x20 [ 51.480716] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 51.485732] ? nf_hook_slow+0x11e/0x1c0 [ 51.489712] ip_output+0x21d/0x8d0 [ 51.493258] ? ip_mc_output+0x15b0/0x15b0 [ 51.497422] ? ip_fragment.constprop.50+0x240/0x240 [ 51.502554] ? __lock_is_held+0xb5/0x140 [ 51.506671] ip_local_out+0xc5/0x1b0 [ 51.510386] __ip_queue_xmit+0x9af/0x1f30 [ 51.514542] ? ip_build_and_send_pkt+0xc90/0xc90 [ 51.519466] ? __skb_checksum+0x920/0x920 [ 51.523615] ? skb_send_sock+0x50/0x50 [ 51.527504] ? reqsk_fastopen_remove+0x660/0x660 [ 51.532266] ? dccp_insert_option_padding+0xbc/0xe0 [ 51.537342] ip_queue_xmit+0x56/0x70 [ 51.541061] dccp_transmit_skb+0x98c/0x12e0 [ 51.545398] dccp_xmit_packet+0x25e/0x7d0 [ 51.549548] ? _copy_from_iter_full+0x2b8/0xc20 [ 51.554224] ? dccp_send_sync+0x270/0x270 [ 51.558437] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 51.563458] ? ccid3_hc_tx_send_packet+0x358/0x876 [ 51.568450] dccp_write_xmit+0x190/0x1f0 [ 51.572520] dccp_sendmsg+0xdc8/0x1020 [ 51.576417] ? dccp_setsockopt_cscov.part.10+0x290/0x290 [ 51.581929] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 51.586863] ? aa_sk_perm+0x218/0x8b0 [ 51.590663] ? import_iovec+0x269/0x470 [ 51.594642] ? aa_af_perm+0x5a0/0x5a0 [ 51.598446] inet_sendmsg+0x1a1/0x690 [ 51.602255] ? ipip_gro_receive+0x100/0x100 [ 51.606579] ? apparmor_socket_sendmsg+0x29/0x30 [ 51.611346] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.617322] ? security_socket_sendmsg+0x94/0xc0 [ 51.622088] ? ipip_gro_receive+0x100/0x100 [ 51.626409] sock_sendmsg+0xd5/0x120 [ 51.630125] ___sys_sendmsg+0x7fd/0x930 [ 51.634103] ? copy_msghdr_from_user+0x580/0x580 [ 51.638911] ? _raw_spin_unlock_bh+0x30/0x40 [ 51.643379] ? check_preemption_disabled+0x48/0x280 [ 51.648398] ? __fget_light+0x2e9/0x430 [ 51.652479] ? fget_raw+0x20/0x20 [ 51.655953] ? release_sock+0x1ec/0x2c0 [ 51.660025] ? lock_sock_nested+0x9a/0x120 [ 51.664320] ? __release_sock+0x3a0/0x3a0 [ 51.668521] ? __local_bh_enable_ip+0x160/0x260 [ 51.673201] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.678793] ? sockfd_lookup_light+0xc5/0x160 [ 51.683290] __sys_sendmsg+0x11d/0x280 [ 51.687182] ? __ia32_sys_shutdown+0x80/0x80 [ 51.691597] ? __x64_sys_futex+0x47f/0x6a0 [ 51.695861] ? do_syscall_64+0x9a/0x820 [ 51.700017] ? do_syscall_64+0x9a/0x820 [ 51.704069] ? trace_hardirqs_off_caller+0x310/0x310 [ 51.709176] ? trace_hardirqs_off+0xb8/0x310 [ 51.713590] __x64_sys_sendmsg+0x78/0xb0 [ 51.717658] do_syscall_64+0x1b9/0x820 [ 51.721549] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 51.726919] ? syscall_return_slowpath+0x5e0/0x5e0 [ 51.731909] ? trace_hardirqs_on_caller+0x310/0x310 [ 51.737039] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 51.742058] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 51.748781] ? __switch_to_asm+0x40/0x70 [ 51.752899] ? __switch_to_asm+0x34/0x70 [ 51.756993] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.761898] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.767264] RIP: 0033:0x446a69 [ 51.770462] Code: e8 cc b8 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 51.789420] RSP: 002b:00007f9de760dda8 EFLAGS: 00000293 ORIG_RAX: 000000000000002e [ 51.797304] RAX: ffffffffffffffda RBX: 00000000006dcc68 RCX: 0000000000446a69 [ 51.804846] RDX: 0000000000000800 RSI: 00000000200004c0 RDI: 0000000000000005 [ 51.812191] RBP: 00000000006dcc60 R08: 0000000000000000 R09: 0000000000000000 [ 51.819465] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dcc6c [ 51.826855] R13: b8f0db312c1fe558 R14: d6bf4eea9265b264 R15: 0000000000000005