[ 18.483628][ T3635] 8021q: adding VLAN 0 to HW filter on device bond0 [ 18.488156][ T3635] eql: remember to turn off Van-Jacobson compression on your slave devices [ 18.526313][ T509] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 18.529216][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.171' (ECDSA) to the list of known hosts. syzkaller login: [ 40.451732][ T4050] chnl_net:caif_netlink_parms(): no params data found [ 40.489949][ T4050] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.491780][ T4050] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.494205][ T4050] device bridge_slave_0 entered promiscuous mode [ 40.500663][ T4050] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.502430][ T4050] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.504845][ T4050] device bridge_slave_1 entered promiscuous mode [ 40.521495][ T4050] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 40.525959][ T4050] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 40.541407][ T4050] team0: Port device team_slave_0 added [ 40.544533][ T4050] team0: Port device team_slave_1 added [ 40.557413][ T4050] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 40.559069][ T4050] 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. [ 40.565473][ T4050] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 40.569732][ T4050] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 40.571324][ T4050] 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. [ 40.577702][ T4050] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 40.636886][ T4050] device hsr_slave_0 entered promiscuous mode [ 40.675131][ T4050] device hsr_slave_1 entered promiscuous mode [ 40.788124][ T4050] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 40.837748][ T4050] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 40.887247][ T4050] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 40.927023][ T4050] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 40.991915][ T4050] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.993656][ T4050] bridge0: port 2(bridge_slave_1) entered forwarding state [ 40.995945][ T4050] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.997635][ T4050] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.037464][ T4050] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.044288][ T1952] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.048856][ T1952] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.051694][ T1952] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.054416][ T1952] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 41.061622][ T4050] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.067963][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.070212][ T13] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.071861][ T13] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.078221][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.080421][ T25] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.082039][ T25] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.094453][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.097527][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 41.102935][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.109195][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 41.117162][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 41.121696][ T4050] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 41.137678][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 41.139588][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 41.147732][ T4050] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 41.159125][ T1952] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 41.170726][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 41.172946][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 41.175185][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 41.179074][ T4050] device veth0_vlan entered promiscuous mode [ 41.185785][ T4050] device veth1_vlan entered promiscuous mode [ 41.200191][ T1952] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 41.202463][ T1952] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 41.206399][ T1952] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 41.210370][ T4050] device veth0_macvtap entered promiscuous mode [ 41.214213][ T4050] device veth1_macvtap entered promiscuous mode [ 41.225623][ T4050] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 41.227490][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 41.230487][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 41.239222][ T4050] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 41.241298][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 41.246008][ T4050] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.248198][ T4050] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.250330][ T4050] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.252318][ T4050] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 41.287731][ C0] BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:417/tfrc_rx_hist_sample_rtt() [ 41.290891][ C0] CPU: 0 PID: 4065 Comm: syz-executor256 Not tainted 5.15.104-syzkaller #0 [ 41.292917][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 41.295167][ C0] Call trace: [ 41.295927][ C0] dump_backtrace+0x0/0x530 [ 41.297013][ C0] show_stack+0x2c/0x3c [ 41.297993][ C0] dump_stack_lvl+0x108/0x170 [ 41.299109][ C0] dump_stack+0x1c/0x58 [ 41.300108][ C0] tfrc_rx_hist_sample_rtt+0x31c/0x3f0 [ 41.301425][ C0] ccid3_hc_rx_packet_recv+0x4e4/0xaf8 [ 41.302726][ C0] dccp_rcv_established+0x1ac/0x2d8 [ 41.303910][ C0] dccp_v4_do_rcv+0xa8/0x188 [ 41.305004][ C0] __sk_receive_skb+0x3f0/0x960 [ 41.306169][ C0] dccp_v4_rcv+0xec4/0x1458 [ 41.307176][ C0] ip_protocol_deliver_rcu+0x36c/0x770 [ 41.308459][ C0] ip_local_deliver_finish+0x1b8/0x30c [ 41.309753][ C0] NF_HOOK+0x324/0x3d0 [ 41.310729][ C0] ip_local_deliver+0x11c/0x190 [ 41.311868][ C0] ip_rcv_finish+0x22c/0x264 [ 41.312922][ C0] NF_HOOK+0x324/0x3d0 [ 41.313921][ C0] ip_rcv+0x78/0x98 [ 41.314783][ C0] __netif_receive_skb+0x18c/0x400 [ 41.315998][ C0] process_backlog+0x3ec/0x7e0 [ 41.317146][ C0] __napi_poll+0xb4/0x624 [ 41.318193][ C0] net_rx_action+0x500/0xc10 [ 41.319302][ C0] __do_softirq+0x344/0xe20 [ 41.320363][ C0] do_softirq+0x120/0x20c [ 41.321364][ C0] __local_bh_enable_ip+0x2c0/0x4d0 [ 41.322599][ C0] local_bh_enable+0x28/0x1d0 [ 41.323699][ C0] ip_finish_output2+0xe8c/0x1330 [ 41.324877][ C0] __ip_finish_output+0x1b0/0x458 [ 41.326022][ C0] ip_finish_output+0x40/0x218 [ 41.327180][ C0] ip_output+0x330/0x49c [ 41.328193][ C0] __ip_queue_xmit+0xe70/0x1930 [ 41.329363][ C0] ip_queue_xmit+0x5c/0x78 [ 41.330407][ C0] dccp_transmit_skb+0xa98/0xe74 [ 41.331514][ C0] dccp_xmit_packet+0x234/0x448 [ 41.332691][ C0] dccp_write_xmit+0x128/0x208 [ 41.333829][ C0] dccp_sendmsg+0x544/0x9ec [ 41.334913][ C0] inet_sendmsg+0x15c/0x290 [ 41.335924][ C0] ____sys_sendmsg+0x584/0x870 [ 41.337045][ C0] ___sys_sendmsg+0x214/0x294 [ 41.338181][ C0] __arm64_sys_sendmsg+0x1ac/0x25c [ 41.339312][ C0] invoke_syscall+0x98/0x2b8 [ 41.340358][ C0] el0_svc_common+0x138/0x258 [ 41.341498][ C0] do_el0_svc+0x58/0x14c [ 41.342494][ C0] el0_svc+0x7c/0x1f0 [ 41.343407][ C0] el0t_64_sync_handler+0x84/0xe4 [ 41.344575][ C0] el0t_64_sync+0x1a0/0x1a4 [ 41.616364][ T4065] dccp_close: ABORT with 202 bytes unread