Warning: Permanently added '10.128.0.195' (ECDSA) to the list of known hosts. syzkaller login: [ 33.132121] IPVS: ftp: loaded support on port[0] = 21 [ 33.200526] chnl_net:caif_netlink_parms(): no params data found [ 33.271520] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.278098] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.285959] device bridge_slave_0 entered promiscuous mode [ 33.293553] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.300012] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.307105] device bridge_slave_1 entered promiscuous mode [ 33.325948] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.334915] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.353135] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.360592] team0: Port device team_slave_0 added [ 33.366120] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.373929] team0: Port device team_slave_1 added [ 33.389671] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.395922] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 33.421290] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.432667] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.438900] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 33.464156] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 33.474847] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 33.482504] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 33.501879] device hsr_slave_0 entered promiscuous mode [ 33.507631] device hsr_slave_1 entered promiscuous mode [ 33.514170] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 33.521494] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 33.586325] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.592999] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.600025] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.606380] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.637493] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.644615] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.653596] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.662527] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.672355] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.679703] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.686689] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 33.697941] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 33.704336] 8021q: adding VLAN 0 to HW filter on device team0 [ 33.713815] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 33.722184] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.728550] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.739025] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 33.747047] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.753723] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.767658] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 33.776553] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 33.786953] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 33.800368] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 33.811270] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 33.822509] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 33.829872] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 33.837622] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 33.845382] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 33.858018] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 33.865658] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 33.873237] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 33.883518] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 33.896596] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 33.906550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.937447] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 33.944977] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 33.952326] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 33.961411] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.969992] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 33.976870] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 33.986165] device veth0_vlan entered promiscuous mode [ 33.995834] device veth1_vlan entered promiscuous mode [ 34.002182] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.011996] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.023839] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.038553] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.046387] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.054755] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.063953] device veth0_macvtap entered promiscuous mode [ 34.071336] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 34.080673] device veth1_macvtap entered promiscuous mode [ 34.089186] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.098184] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.109142] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.115914] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.124937] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.135537] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.142522] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 34.243442] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:422/tfrc_rx_hist_sample_rtt() [ 34.258596] CPU: 0 PID: 8311 Comm: syz-executor960 Not tainted 4.19.211-syzkaller #0 [ 34.266590] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 34.276129] Call Trace: [ 34.278737] dump_stack+0x1fc/0x2ef [ 34.282368] tfrc_rx_hist_sample_rtt.cold+0x57/0x5c [ 34.287380] ccid3_hc_rx_packet_recv+0x5be/0xe90 [ 34.293343] ? ccid3_hc_rx_exit+0x60/0x60 [ 34.297478] dccp_deliver_input_to_ccids+0xe1/0x260 [ 34.302482] dccp_rcv_established+0x107/0x160 [ 34.306989] dccp_v4_do_rcv+0x136/0x1a0 [ 34.311129] __release_sock+0x134/0x3a0 [ 34.315092] release_sock+0x54/0x1b0 [ 34.318791] dccp_sendmsg+0x639/0xc90 [ 34.322581] ? aa_sk_perm+0x534/0x930 [ 34.326365] ? dccp_ioctl+0x160/0x160 [ 34.330148] ? aa_af_perm+0x230/0x230 [ 34.333930] ? kernel_recvmsg+0x220/0x220 [ 34.338062] inet_sendmsg+0x132/0x5a0 [ 34.341849] ? security_socket_sendmsg+0x83/0xb0 [ 34.346597] ? inet_recvmsg+0x5c0/0x5c0 [ 34.350591] sock_sendmsg+0xc3/0x120 [ 34.354299] ___sys_sendmsg+0x7bb/0x8e0 [ 34.358262] ? mark_held_locks+0xf0/0xf0 [ 34.362306] ? copy_msghdr_from_user+0x440/0x440 [ 34.367068] ? __fget+0x32f/0x510 [ 34.371652] ? lock_downgrade+0x720/0x720 [ 34.375781] ? check_preemption_disabled+0x41/0x280 [ 34.380787] ? check_preemption_disabled+0x41/0x280 [ 34.385789] ? __fget+0x356/0x510 [ 34.389322] ? do_dup2+0x450/0x450 [ 34.392859] ? __fdget+0x1d0/0x230 [ 34.396436] __x64_sys_sendmsg+0x132/0x220 [ 34.400656] ? __sys_sendmsg+0x1b0/0x1b0 [ 34.404815] ? __se_sys_futex+0x298/0x3b0 [ 34.408963] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.414317] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.419320] ? do_syscall_64+0x21/0x620 [ 34.423291] do_syscall_64+0xf9/0x620 [ 34.427078] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.432254] RIP: 0033:0x7f992a0cd419 [ 34.435951] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 34.454857] RSP: 002b:00007f992a07b308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 34.462563] RAX: ffffffffffffffda RBX: 00007f992a1564e8 RCX: 00007f992a0cd419 [ 34.469990] RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000007 [ 34.477935] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 34.486329] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f992a1564e0 [ 34.49358