[ 18.553061][ T3639] 8021q: adding VLAN 0 to HW filter on device bond0 [ 18.560545][ T3639] eql: remember to turn off Van-Jacobson compression on your slave devices [ 18.601425][ T148] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 18.606861][ T3551] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.184' (ECDSA) to the list of known hosts. syzkaller login: [ 46.435446][ T4055] chnl_net:caif_netlink_parms(): no params data found [ 46.472509][ T4055] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.474154][ T4055] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.476287][ T4055] device bridge_slave_0 entered promiscuous mode [ 46.480727][ T4055] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.482352][ T4055] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.484542][ T4055] device bridge_slave_1 entered promiscuous mode [ 46.499360][ T4055] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 46.503242][ T4055] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 46.518638][ T4055] team0: Port device team_slave_0 added [ 46.521640][ T4055] team0: Port device team_slave_1 added [ 46.533967][ T4055] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 46.535483][ T4055] 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. [ 46.541222][ T4055] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 46.545224][ T4055] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 46.546744][ T4055] 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. [ 46.552432][ T4055] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 46.620439][ T4055] device hsr_slave_0 entered promiscuous mode [ 46.658490][ T4055] device hsr_slave_1 entered promiscuous mode [ 46.778043][ T4055] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 46.840900][ T4055] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 46.880074][ T4055] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 46.940887][ T4055] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 47.005155][ T4055] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.006744][ T4055] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.008803][ T4055] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.010413][ T4055] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.052699][ T4055] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.059789][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.063264][ T1713] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.066008][ T1713] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.069637][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 47.076084][ T4055] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.083096][ T1528] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.085119][ T1528] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.086711][ T1528] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.092894][ T4068] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 47.094932][ T4068] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.096449][ T4068] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.111614][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.114198][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 47.120391][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.129788][ T1528] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 47.132328][ T1528] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 47.135510][ T4055] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 47.147469][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 47.149893][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 47.158950][ T4055] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 47.172370][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 47.184986][ T4068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 47.187340][ T4068] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 47.190984][ T4068] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 47.195176][ T4055] device veth0_vlan entered promiscuous mode [ 47.201529][ T4055] device veth1_vlan entered promiscuous mode [ 47.216867][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 47.219363][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 47.221840][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 47.225866][ T4055] device veth0_macvtap entered promiscuous mode [ 47.231462][ T4055] device veth1_macvtap entered promiscuous mode [ 47.242583][ T4055] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 47.244484][ T1528] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 47.247639][ T1528] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 47.253154][ T4055] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 47.255630][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 47.259398][ T4055] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.261391][ T4055] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.263331][ T4055] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.265209][ T4055] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 47.297325][ 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() [ 47.300633][ C0] CPU: 0 PID: 4055 Comm: syz-executor137 Not tainted 5.15.104-syzkaller #0 [ 47.302496][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 47.304545][ C0] Call trace: [ 47.305201][ C0] dump_backtrace+0x0/0x530 [ 47.306148][ C0] show_stack+0x2c/0x3c [ 47.306990][ C0] dump_stack_lvl+0x108/0x170 [ 47.308030][ C0] dump_stack+0x1c/0x58 [ 47.308950][ C0] tfrc_rx_hist_sample_rtt+0x31c/0x3f0 [ 47.310057][ C0] ccid3_hc_rx_packet_recv+0x4e4/0xaf8 [ 47.311176][ C0] dccp_rcv_established+0x1ac/0x2d8 [ 47.312325][ C0] dccp_v4_do_rcv+0xa8/0x188 [ 47.313287][ C0] __sk_receive_skb+0x3f0/0x960 [ 47.314417][ C0] dccp_v4_rcv+0xec4/0x1458 [ 47.315323][ C0] ip_protocol_deliver_rcu+0x36c/0x770 [ 47.316482][ C0] ip_local_deliver_finish+0x1b8/0x30c [ 47.317643][ C0] NF_HOOK+0x324/0x3d0 [ 47.318488][ C0] ip_local_deliver+0x11c/0x190 [ 47.319572][ C0] ip_rcv_finish+0x22c/0x264 [ 47.320501][ C0] NF_HOOK+0x324/0x3d0 [ 47.321403][ C0] ip_rcv+0x78/0x98 [ 47.322224][ C0] __netif_receive_skb+0x18c/0x400 [ 47.323320][ C0] process_backlog+0x3ec/0x7e0 [ 47.324305][ C0] __napi_poll+0xb4/0x624 [ 47.325254][ C0] net_rx_action+0x500/0xc10 [ 47.326222][ C0] __do_softirq+0x344/0xe20 [ 47.327234][ C0] do_softirq+0x120/0x20c [ 47.328265][ C0] __local_bh_enable_ip+0x2c0/0x4d0 [ 47.329415][ C0] local_bh_enable+0x28/0x1d0 [ 47.330466][ C0] ip_finish_output2+0xe8c/0x1330 [ 47.331521][ C0] __ip_finish_output+0x1b0/0x458 [ 47.332544][ C0] ip_finish_output+0x40/0x218 [ 47.333552][ C0] ip_output+0x330/0x49c [ 47.334502][ C0] __ip_queue_xmit+0xe70/0x1930 [ 47.335505][ C0] ip_queue_xmit+0x5c/0x78 [ 47.336483][ C0] dccp_transmit_skb+0xa98/0xe74 [ 47.337396][ C0] dccp_xmit_packet+0x234/0x448 [ 47.338424][ C0] dccp_write_xmit+0x128/0x208 [ 47.339463][ C0] dccp_sendmsg+0x544/0x9ec [ 47.340503][ C0] inet_sendmsg+0x15c/0x290 [ 47.341479][ C0] ____sys_sendmsg+0x584/0x870 [ 47.342519][ C0] ___sys_sendmsg+0x214/0x294 [ 47.343546][ C0] __arm64_sys_sendmsg+0x1ac/0x25c [ 47.344530][ C0] invoke_syscall+0x98/0x2b8 [ 47.345498][ C0] el0_svc_common+0x138/0x258 [ 47.346529][ C0] do_el0_svc+0x58/0x14c [ 47.347491][ C0] el0_svc+0x7c/0x1f0 [ 47.348345][ C0] el0t_64_sync_handler+0x84/0xe4 [ 47.349449][ C0] el0t_64_sync+0x1a0/0x1a4 [ 50.568951][ T4055] dccp_close: ABORT with 202 bytes unread