Warning: Permanently added '10.128.0.187' (ED25519) to the list of known hosts. 1970/01/01 00:01:08 parsed 1 programs [ 69.560929][ T4417] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 69.623150][ T1540] cfg80211: failed to load regulatory.db [ 69.632135][ T2064] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.633238][ T2064] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.019456][ T4538] chnl_net:caif_netlink_parms(): no params data found [ 71.040545][ T4538] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.041720][ T4538] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.043600][ T4538] device bridge_slave_0 entered promiscuous mode [ 71.045878][ T4538] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.047014][ T4538] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.048580][ T4538] device bridge_slave_1 entered promiscuous mode [ 71.059184][ T4538] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.062166][ T4538] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.071550][ T4538] team0: Port device team_slave_0 added [ 71.074487][ T4538] team0: Port device team_slave_1 added [ 71.082508][ T4538] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.083605][ T4538] 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. [ 71.087590][ T4538] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.089929][ T4538] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.090980][ T4538] 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. [ 71.095125][ T4538] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.142924][ T4538] device hsr_slave_0 entered promiscuous mode [ 71.182664][ T4538] device hsr_slave_1 entered promiscuous mode [ 71.874968][ T4538] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.913039][ T4538] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.954770][ T4538] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.983751][ T4538] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.030746][ T4538] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.032011][ T4538] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.033155][ T4538] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.034273][ T4538] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.036953][ T148] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.038467][ T148] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.064300][ T4538] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.068695][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.070052][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.074374][ T4538] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.077520][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.078984][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.080400][ T1684] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.081494][ T1684] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.095539][ T4538] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 72.099075][ T4538] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 72.101250][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.102750][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.104146][ T1684] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.105260][ T1684] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.106611][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.108213][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.109812][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.125028][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.128261][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.131193][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.133443][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.134880][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.136394][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.137801][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.141138][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.142658][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.185222][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.186582][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.189491][ T4538] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.197263][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 72.198991][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.205880][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 72.207396][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.209122][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.210511][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.213525][ T4538] device veth0_vlan entered promiscuous mode [ 72.217288][ T4538] device veth1_vlan entered promiscuous mode [ 72.226488][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.228024][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.229355][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 72.230881][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.234859][ T4538] device veth0_macvtap entered promiscuous mode [ 72.237166][ T4538] device veth1_macvtap entered promiscuous mode [ 72.247500][ T4538] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.248831][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.250361][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.251671][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.254669][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.259005][ T4538] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.261597][ T4538] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.264099][ T4538] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.265491][ T4538] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.266877][ T4538] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.269443][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.271046][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.463628][ T1684] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.464861][ T1684] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.466049][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.480392][ T1684] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.481652][ T1684] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.486067][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:13 executed programs: 0 [ 73.111191][ T4754] chnl_net:caif_netlink_parms(): no params data found [ 73.154028][ T4754] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.155203][ T4754] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.156700][ T4754] device bridge_slave_0 entered promiscuous mode [ 73.158875][ T4754] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.159986][ T4754] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.161476][ T4754] device bridge_slave_1 entered promiscuous mode [ 73.181707][ T4754] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.185697][ T4754] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.197629][ T4754] team0: Port device team_slave_0 added [ 73.199798][ T4754] team0: Port device team_slave_1 added [ 73.209716][ T4754] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.210740][ T4754] 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. [ 73.215259][ T4754] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.217719][ T4754] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.218820][ T4754] 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. [ 73.223273][ T4754] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.254487][ T4754] device hsr_slave_0 entered promiscuous mode [ 73.312266][ T4754] device hsr_slave_1 entered promiscuous mode [ 73.331928][ T4754] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.333110][ T4754] Cannot create hsr debugfs directory [ 73.369069][ T4754] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.061843][ T4641] Bluetooth: hci0: command 0x0409 tx timeout [ 75.857707][ T4754] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.142058][ T13] Bluetooth: hci0: command 0x041b tx timeout [ 77.586486][ T4754] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.637145][ T4754] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.776437][ T4754] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.813860][ T4754] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.863476][ T4754] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.914909][ T4754] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.977739][ T4754] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.982033][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.983618][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.986401][ T4754] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.989075][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.990604][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.993066][ T501] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.994132][ T501] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.995765][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.998660][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.000260][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.001696][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.002903][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.007630][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.010451][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.013802][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.016489][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.018082][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.020721][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.023517][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.026468][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.028011][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.030639][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.034749][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.037726][ T4754] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.080410][ T4754] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.082369][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.084050][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.102898][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.104548][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.110989][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.113584][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.115160][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.116599][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.119200][ T4754] device veth0_vlan entered promiscuous mode [ 78.123667][ T4754] device veth1_vlan entered promiscuous mode [ 78.131162][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.134219][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.135591][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.137137][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.139496][ T4754] device veth0_macvtap entered promiscuous mode [ 78.143095][ T4754] device veth1_macvtap entered promiscuous mode [ 78.162873][ T4754] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 78.164506][ T4754] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.166528][ T4754] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.167712][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.169250][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.170611][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.172764][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.175193][ T4754] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 78.176725][ T4754] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.178883][ T4754] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.180065][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.181690][ T501] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.188042][ T4754] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.189352][ T4754] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.190655][ T4754] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.192332][ T4754] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.217967][ T501] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.220332][ T501] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.225108][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.229776][ T1684] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.231069][ T1684] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.233173][ T1684] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:18 executed programs: 2 [ 78.261467][ T4940] dccp_xmit_packet: Payload too large (65475) for featneg. [ 78.282952][ T4942] dccp_xmit_packet: Payload too large (65475) for featneg. [ 78.291100][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.292826][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.293906][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.295408][ T4942] Call trace: [ 78.295995][ T4942] dump_backtrace+0x0/0x458 [ 78.296704][ T4942] show_stack+0x2c/0x3c [ 78.297363][ T4942] __dump_stack+0x30/0x40 [ 78.298027][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.298720][ T4942] dump_stack+0x1c/0x5c [ 78.299378][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.300324][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.301160][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.301989][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.302705][ T4942] inet_sendmsg+0x154/0x284 [ 78.303427][ T4942] __sys_sendto+0x30c/0x420 [ 78.304162][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.304939][ T4942] invoke_syscall+0x98/0x2b0 [ 78.305676][ T4942] el0_svc_common+0x138/0x258 [ 78.306481][ T4942] do_el0_svc+0x58/0x13c [ 78.307206][ T4942] el0_svc+0x78/0x1d0 [ 78.307891][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.308698][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.310636][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.313013][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.314062][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.315431][ T4942] Call trace: [ 78.315939][ T4942] dump_backtrace+0x0/0x458 [ 78.316616][ T4942] show_stack+0x2c/0x3c [ 78.317154][ T4942] __dump_stack+0x30/0x40 [ 78.317748][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.318399][ T4942] dump_stack+0x1c/0x5c [ 78.318966][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.319719][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.320364][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.321055][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.321695][ T4942] inet_sendmsg+0x154/0x284 [ 78.322319][ T4942] __sys_sendto+0x30c/0x420 [ 78.322946][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.323762][ T4942] invoke_syscall+0x98/0x2b0 [ 78.324519][ T4942] el0_svc_common+0x138/0x258 [ 78.325257][ T4942] do_el0_svc+0x58/0x13c [ 78.325920][ T4942] el0_svc+0x78/0x1d0 [ 78.326633][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.327461][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.328926][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.330543][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.331751][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.333481][ T4942] Call trace: [ 78.334029][ T4942] dump_backtrace+0x0/0x458 [ 78.334837][ T4942] show_stack+0x2c/0x3c [ 78.335533][ T4942] __dump_stack+0x30/0x40 [ 78.336276][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.337016][ T4942] dump_stack+0x1c/0x5c [ 78.337662][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.338585][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.339412][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.340090][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.340814][ T4942] inet_sendmsg+0x154/0x284 [ 78.341537][ T4942] __sys_sendto+0x30c/0x420 [ 78.342297][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.343066][ T4942] invoke_syscall+0x98/0x2b0 [ 78.343847][ T4942] el0_svc_common+0x138/0x258 [ 78.344656][ T4942] do_el0_svc+0x58/0x13c [ 78.345325][ T4942] el0_svc+0x78/0x1d0 [ 78.345972][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.346801][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.348586][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.350513][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.351578][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.353275][ T4942] Call trace: [ 78.353756][ T4942] dump_backtrace+0x0/0x458 [ 78.354487][ T4942] show_stack+0x2c/0x3c [ 78.355072][ T4942] __dump_stack+0x30/0x40 [ 78.355741][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.356412][ T4942] dump_stack+0x1c/0x5c [ 78.357081][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.357994][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.358774][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.359551][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.360300][ T4942] inet_sendmsg+0x154/0x284 [ 78.360975][ T4942] __sys_sendto+0x30c/0x420 [ 78.361729][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.362517][ T4942] invoke_syscall+0x98/0x2b0 [ 78.363291][ T4942] el0_svc_common+0x138/0x258 [ 78.364087][ T4942] do_el0_svc+0x58/0x13c [ 78.364822][ T4942] el0_svc+0x78/0x1d0 [ 78.365513][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.366338][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.367763][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.369454][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.370584][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.372053][ T4942] Call trace: [ 78.372559][ T4942] dump_backtrace+0x0/0x458 [ 78.373242][ T4942] show_stack+0x2c/0x3c [ 78.373988][ T4942] __dump_stack+0x30/0x40 [ 78.374718][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.375459][ T4942] dump_stack+0x1c/0x5c [ 78.376121][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.377028][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.377785][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.378527][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.379236][ T4942] inet_sendmsg+0x154/0x284 [ 78.379954][ T4942] __sys_sendto+0x30c/0x420 [ 78.380641][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.381654][ T4942] invoke_syscall+0x98/0x2b0 [ 78.382407][ T4942] el0_svc_common+0x138/0x258 [ 78.383128][ T4942] do_el0_svc+0x58/0x13c [ 78.383884][ T4942] el0_svc+0x78/0x1d0 [ 78.384573][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.385401][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.386720][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.388599][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.389700][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.391322][ T4942] Call trace: [ 78.391871][ T4942] dump_backtrace+0x0/0x458 [ 78.392575][ T4942] show_stack+0x2c/0x3c [ 78.393234][ T4942] __dump_stack+0x30/0x40 [ 78.393959][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.394675][ T4942] dump_stack+0x1c/0x5c [ 78.395302][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.396162][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.396882][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.397630][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.398316][ T4942] inet_sendmsg+0x154/0x284 [ 78.399108][ T4942] __sys_sendto+0x30c/0x420 [ 78.399832][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.400622][ T4942] invoke_syscall+0x98/0x2b0 [ 78.401411][ T4942] el0_svc_common+0x138/0x258 [ 78.402149][ T4942] do_el0_svc+0x58/0x13c [ 78.402859][ T4942] el0_svc+0x78/0x1d0 [ 78.403543][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.404336][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.405639][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.407486][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.408641][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.410393][ T4942] Call trace: [ 78.410914][ T4942] dump_backtrace+0x0/0x458 [ 78.411665][ T4942] show_stack+0x2c/0x3c [ 78.412321][ T4942] __dump_stack+0x30/0x40 [ 78.412956][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.413684][ T4942] dump_stack+0x1c/0x5c [ 78.414339][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.415230][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.415973][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.416693][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.417409][ T4942] inet_sendmsg+0x154/0x284 [ 78.418109][ T4942] __sys_sendto+0x30c/0x420 [ 78.418774][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.419544][ T4942] invoke_syscall+0x98/0x2b0 [ 78.420335][ T4942] el0_svc_common+0x138/0x258 [ 78.421076][ T4942] do_el0_svc+0x58/0x13c [ 78.421773][ T4942] el0_svc+0x78/0x1d0 [ 78.422409][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.423228][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.424460][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.426302][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.427416][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.429009][ T4942] Call trace: [ 78.429510][ T4942] dump_backtrace+0x0/0x458 [ 78.430286][ T4942] show_stack+0x2c/0x3c [ 78.430964][ T4942] __dump_stack+0x30/0x40 [ 78.431699][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.432453][ T4942] dump_stack+0x1c/0x5c [ 78.433143][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.434056][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.434831][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.435589][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.436315][ T4942] inet_sendmsg+0x154/0x284 [ 78.437046][ T4942] __sys_sendto+0x30c/0x420 [ 78.437803][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.438641][ T4942] invoke_syscall+0x98/0x2b0 [ 78.439444][ T4942] el0_svc_common+0x138/0x258 [ 78.440174][ T4942] do_el0_svc+0x58/0x13c [ 78.440865][ T4942] el0_svc+0x78/0x1d0 [ 78.441515][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.442289][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.443560][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.445328][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.446518][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.448185][ T4942] Call trace: [ 78.448683][ T4942] dump_backtrace+0x0/0x458 [ 78.449428][ T4942] show_stack+0x2c/0x3c [ 78.450133][ T4942] __dump_stack+0x30/0x40 [ 78.450893][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.451577][ T4942] dump_stack+0x1c/0x5c [ 78.452237][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.453020][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.453821][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.454590][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.455351][ T4942] inet_sendmsg+0x154/0x284 [ 78.456073][ T4942] __sys_sendto+0x30c/0x420 [ 78.456816][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.457668][ T4942] invoke_syscall+0x98/0x2b0 [ 78.458433][ T4942] el0_svc_common+0x138/0x258 [ 78.459156][ T4942] do_el0_svc+0x58/0x13c [ 78.459862][ T4942] el0_svc+0x78/0x1d0 [ 78.460561][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.461385][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.462627][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.464325][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.465446][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.466947][ T4942] Call trace: [ 78.467419][ T4942] dump_backtrace+0x0/0x458 [ 78.468113][ T4942] show_stack+0x2c/0x3c [ 78.468781][ T4942] __dump_stack+0x30/0x40 [ 78.469471][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.470174][ T4942] dump_stack+0x1c/0x5c [ 78.470821][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.471680][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.472515][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.473284][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.473993][ T4942] inet_sendmsg+0x154/0x284 [ 78.474684][ T4942] __sys_sendto+0x30c/0x420 [ 78.475368][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.476147][ T4942] invoke_syscall+0x98/0x2b0 [ 78.476915][ T4942] el0_svc_common+0x138/0x258 [ 78.477699][ T4942] do_el0_svc+0x58/0x13c [ 78.478356][ T4942] el0_svc+0x78/0x1d0 [ 78.478967][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.479797][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.480842][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.482751][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.483878][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.485308][ T4942] Call trace: [ 78.485773][ T4942] dump_backtrace+0x0/0x458 [ 78.486506][ T4942] show_stack+0x2c/0x3c [ 78.487169][ T4942] __dump_stack+0x30/0x40 [ 78.487841][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.488558][ T4942] dump_stack+0x1c/0x5c [ 78.489261][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.490154][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.490883][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.491653][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.492387][ T4942] inet_sendmsg+0x154/0x284 [ 78.493117][ T4942] __sys_sendto+0x30c/0x420 [ 78.493844][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.494606][ T4942] invoke_syscall+0x98/0x2b0 [ 78.495296][ T4942] el0_svc_common+0x138/0x258 [ 78.496006][ T4942] do_el0_svc+0x58/0x13c [ 78.496739][ T4942] el0_svc+0x78/0x1d0 [ 78.497370][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.498121][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.499049][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.500615][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.501707][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.503306][ T4942] Call trace: [ 78.503840][ T4942] dump_backtrace+0x0/0x458 [ 78.504588][ T4942] show_stack+0x2c/0x3c [ 78.505256][ T4942] __dump_stack+0x30/0x40 [ 78.505967][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.506723][ T4942] dump_stack+0x1c/0x5c [ 78.507398][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.508256][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.509075][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.509870][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.510568][ T4942] inet_sendmsg+0x154/0x284 [ 78.511256][ T4942] __sys_sendto+0x30c/0x420 [ 78.511962][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.512775][ T4942] invoke_syscall+0x98/0x2b0 [ 78.513531][ T4942] el0_svc_common+0x138/0x258 [ 78.514283][ T4942] do_el0_svc+0x58/0x13c [ 78.514966][ T4942] el0_svc+0x78/0x1d0 [ 78.515578][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.516417][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.518005][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.519659][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.520818][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.522391][ T4942] Call trace: [ 78.522915][ T4942] dump_backtrace+0x0/0x458 [ 78.523632][ T4942] show_stack+0x2c/0x3c [ 78.524243][ T4942] __dump_stack+0x30/0x40 [ 78.524920][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.525716][ T4942] dump_stack+0x1c/0x5c [ 78.526393][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.527300][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.528166][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.528985][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.529727][ T4942] inet_sendmsg+0x154/0x284 [ 78.530452][ T4942] __sys_sendto+0x30c/0x420 [ 78.531254][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.532001][ T4942] invoke_syscall+0x98/0x2b0 [ 78.532699][ T4942] el0_svc_common+0x138/0x258 [ 78.533354][ T4942] do_el0_svc+0x58/0x13c [ 78.533969][ T4942] el0_svc+0x78/0x1d0 [ 78.534523][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.535220][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.536383][ T4942] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.538243][ T4942] CPU: 1 PID: 4942 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.539314][ T4942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.540782][ T4942] Call trace: [ 78.541260][ T4942] dump_backtrace+0x0/0x458 [ 78.541926][ T4942] show_stack+0x2c/0x3c [ 78.542565][ T4942] __dump_stack+0x30/0x40 [ 78.543302][ T4942] dump_stack_lvl+0xf4/0x15c [ 78.544079][ T4942] dump_stack+0x1c/0x5c [ 78.544779][ T4942] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.545721][ T4942] dccp_xmit_packet+0x298/0x448 [ 78.546469][ T4942] dccp_write_xmit+0x118/0x1d0 [ 78.547173][ T4942] dccp_sendmsg+0x550/0x8b8 [ 78.547924][ T4942] inet_sendmsg+0x154/0x284 [ 78.548650][ T4942] __sys_sendto+0x30c/0x420 [ 78.549347][ T4942] __arm64_sys_sendto+0xd8/0xf8 [ 78.550116][ T4942] invoke_syscall+0x98/0x2b0 [ 78.550935][ T4942] el0_svc_common+0x138/0x258 [ 78.551698][ T4942] do_el0_svc+0x58/0x13c [ 78.552331][ T4942] el0_svc+0x78/0x1d0 [ 78.552967][ T4942] el0t_64_sync_handler+0xcc/0xe4 [ 78.553690][ T4942] el0t_64_sync+0x1a0/0x1a4 [ 78.567080][ T4944] dccp_xmit_packet: Payload too large (65475) for featneg. [ 78.574411][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.576163][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.577261][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.578686][ T4944] Call trace: [ 78.579149][ T4944] dump_backtrace+0x0/0x458 [ 78.579912][ T4944] show_stack+0x2c/0x3c [ 78.580594][ T4944] __dump_stack+0x30/0x40 [ 78.581301][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.582043][ T4944] dump_stack+0x1c/0x5c [ 78.582695][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.583584][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.584433][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.585222][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.585940][ T4944] inet_sendmsg+0x154/0x284 [ 78.586680][ T4944] __sys_sendto+0x30c/0x420 [ 78.587396][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.588227][ T4944] invoke_syscall+0x98/0x2b0 [ 78.589007][ T4944] el0_svc_common+0x138/0x258 [ 78.589805][ T4944] do_el0_svc+0x58/0x13c [ 78.590513][ T4944] el0_svc+0x78/0x1d0 [ 78.591170][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.591982][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.594155][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.595666][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.596675][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.598226][ T4944] Call trace: [ 78.598720][ T4944] dump_backtrace+0x0/0x458 [ 78.599399][ T4944] show_stack+0x2c/0x3c [ 78.600073][ T4944] __dump_stack+0x30/0x40 [ 78.600747][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.601505][ T4944] dump_stack+0x1c/0x5c [ 78.602211][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.603026][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.603748][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.604467][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.605168][ T4944] inet_sendmsg+0x154/0x284 [ 78.605893][ T4944] __sys_sendto+0x30c/0x420 [ 78.606602][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.607414][ T4944] invoke_syscall+0x98/0x2b0 [ 78.608165][ T4944] el0_svc_common+0x138/0x258 [ 78.608876][ T4944] do_el0_svc+0x58/0x13c [ 78.609578][ T4944] el0_svc+0x78/0x1d0 [ 78.610257][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.611090][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.612103][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.613844][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.615031][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.616671][ T4944] Call trace: [ 78.617183][ T4944] dump_backtrace+0x0/0x458 [ 78.617899][ T4944] show_stack+0x2c/0x3c [ 78.618500][ T4944] __dump_stack+0x30/0x40 [ 78.619202][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.619952][ T4944] dump_stack+0x1c/0x5c [ 78.620678][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.621573][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.622333][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.623072][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.623799][ T4944] inet_sendmsg+0x154/0x284 [ 78.624524][ T4944] __sys_sendto+0x30c/0x420 [ 78.625168][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.625841][ T4944] invoke_syscall+0x98/0x2b0 [ 78.626492][ T4944] el0_svc_common+0x138/0x258 [ 78.627194][ T4944] do_el0_svc+0x58/0x13c [ 78.627921][ T4944] el0_svc+0x78/0x1d0 [ 78.628552][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.629374][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.630809][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.632630][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.633704][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.635366][ T4944] Call trace: [ 78.635864][ T4944] dump_backtrace+0x0/0x458 [ 78.636581][ T4944] show_stack+0x2c/0x3c [ 78.637219][ T4944] __dump_stack+0x30/0x40 [ 78.637830][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.638490][ T4944] dump_stack+0x1c/0x5c [ 78.639193][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.640052][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.640834][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.641572][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.642271][ T4944] inet_sendmsg+0x154/0x284 [ 78.643022][ T4944] __sys_sendto+0x30c/0x420 [ 78.643754][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.644522][ T4944] invoke_syscall+0x98/0x2b0 [ 78.645341][ T4944] el0_svc_common+0x138/0x258 [ 78.646121][ T4944] do_el0_svc+0x58/0x13c [ 78.646817][ T4944] el0_svc+0x78/0x1d0 [ 78.647442][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.648234][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.649145][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.650884][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.652010][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.653612][ T4944] Call trace: [ 78.654099][ T4944] dump_backtrace+0x0/0x458 [ 78.654789][ T4944] show_stack+0x2c/0x3c [ 78.655500][ T4944] __dump_stack+0x30/0x40 [ 78.656212][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.656930][ T4944] dump_stack+0x1c/0x5c [ 78.657617][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.658479][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.659250][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.660032][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.660794][ T4944] inet_sendmsg+0x154/0x284 [ 78.661576][ T4944] __sys_sendto+0x30c/0x420 [ 78.662361][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.663108][ T4944] invoke_syscall+0x98/0x2b0 [ 78.663840][ T4944] el0_svc_common+0x138/0x258 [ 78.664636][ T4944] do_el0_svc+0x58/0x13c [ 78.665367][ T4944] el0_svc+0x78/0x1d0 [ 78.666037][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.666900][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.668319][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.670002][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.671083][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.672686][ T4944] Call trace: [ 78.673210][ T4944] dump_backtrace+0x0/0x458 [ 78.673980][ T4944] show_stack+0x2c/0x3c [ 78.674690][ T4944] __dump_stack+0x30/0x40 [ 78.675310][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.675989][ T4944] dump_stack+0x1c/0x5c [ 78.676625][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.677378][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.678079][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.678726][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.679359][ T4944] inet_sendmsg+0x154/0x284 [ 78.680050][ T4944] __sys_sendto+0x30c/0x420 [ 78.680762][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.681511][ T4944] invoke_syscall+0x98/0x2b0 [ 78.682242][ T4944] el0_svc_common+0x138/0x258 [ 78.682960][ T4944] do_el0_svc+0x58/0x13c [ 78.683641][ T4944] el0_svc+0x78/0x1d0 [ 78.684271][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.684981][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.685798][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.687575][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.688703][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.690304][ T4944] Call trace: [ 78.690830][ T4944] dump_backtrace+0x0/0x458 [ 78.691526][ T4944] show_stack+0x2c/0x3c [ 78.692150][ T4944] __dump_stack+0x30/0x40 [ 78.692859][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.693609][ T4944] dump_stack+0x1c/0x5c [ 78.694286][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.695238][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.696019][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.696764][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.697536][ T4944] inet_sendmsg+0x154/0x284 [ 78.698305][ T4944] __sys_sendto+0x30c/0x420 [ 78.699023][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.699786][ T4944] invoke_syscall+0x98/0x2b0 [ 78.700547][ T4944] el0_svc_common+0x138/0x258 [ 78.701315][ T4944] do_el0_svc+0x58/0x13c [ 78.702072][ T4944] el0_svc+0x78/0x1d0 [ 78.702672][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.703469][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.704740][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.706443][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.707604][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.709193][ T4944] Call trace: [ 78.709670][ T4944] dump_backtrace+0x0/0x458 [ 78.710373][ T4944] show_stack+0x2c/0x3c [ 78.711022][ T4944] __dump_stack+0x30/0x40 [ 78.711709][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.712491][ T4944] dump_stack+0x1c/0x5c [ 78.713196][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.714002][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.714777][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.715458][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.716138][ T4944] inet_sendmsg+0x154/0x284 [ 78.716830][ T4944] __sys_sendto+0x30c/0x420 [ 78.717509][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.718267][ T4944] invoke_syscall+0x98/0x2b0 [ 78.718958][ T4944] el0_svc_common+0x138/0x258 [ 78.719746][ T4944] do_el0_svc+0x58/0x13c [ 78.720454][ T4944] el0_svc+0x78/0x1d0 [ 78.721079][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.721903][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.723063][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.724891][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.726153][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.727779][ T4944] Call trace: [ 78.728288][ T4944] dump_backtrace+0x0/0x458 [ 78.728991][ T4944] show_stack+0x2c/0x3c [ 78.729660][ T4944] __dump_stack+0x30/0x40 [ 78.730376][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.731151][ T4944] dump_stack+0x1c/0x5c [ 78.731817][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.732813][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.733622][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.734410][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.735194][ T4944] inet_sendmsg+0x154/0x284 [ 78.735954][ T4944] __sys_sendto+0x30c/0x420 [ 78.736697][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.737488][ T4944] invoke_syscall+0x98/0x2b0 [ 78.738235][ T4944] el0_svc_common+0x138/0x258 [ 78.739012][ T4944] do_el0_svc+0x58/0x13c [ 78.739706][ T4944] el0_svc+0x78/0x1d0 [ 78.740343][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.741129][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.742491][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.744191][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.745231][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.746779][ T4944] Call trace: [ 78.747287][ T4944] dump_backtrace+0x0/0x458 [ 78.748024][ T4944] show_stack+0x2c/0x3c [ 78.748673][ T4944] __dump_stack+0x30/0x40 [ 78.749340][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.750074][ T4944] dump_stack+0x1c/0x5c [ 78.750705][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.751550][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.752367][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.753137][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.753896][ T4944] inet_sendmsg+0x154/0x284 [ 78.754618][ T4944] __sys_sendto+0x30c/0x420 [ 78.755334][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.756098][ T4944] invoke_syscall+0x98/0x2b0 [ 78.756856][ T4944] el0_svc_common+0x138/0x258 [ 78.757610][ T4944] do_el0_svc+0x58/0x13c [ 78.758325][ T4944] el0_svc+0x78/0x1d0 [ 78.758990][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.759807][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.760674][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.762652][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.763784][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.765317][ T4944] Call trace: [ 78.765873][ T4944] dump_backtrace+0x0/0x458 [ 78.766642][ T4944] show_stack+0x2c/0x3c [ 78.767295][ T4944] __dump_stack+0x30/0x40 [ 78.767968][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.768671][ T4944] dump_stack+0x1c/0x5c [ 78.769381][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.770290][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.771105][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.771866][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.772597][ T4944] inet_sendmsg+0x154/0x284 [ 78.773347][ T4944] __sys_sendto+0x30c/0x420 [ 78.774053][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.774790][ T4944] invoke_syscall+0x98/0x2b0 [ 78.775524][ T4944] el0_svc_common+0x138/0x258 [ 78.776278][ T4944] do_el0_svc+0x58/0x13c [ 78.776976][ T4944] el0_svc+0x78/0x1d0 [ 78.777590][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.778292][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.779499][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.781075][ T4944] CPU: 0 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.782218][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.783823][ T4944] Call trace: [ 78.784365][ T4944] dump_backtrace+0x0/0x458 [ 78.785088][ T4944] show_stack+0x2c/0x3c [ 78.785769][ T4944] __dump_stack+0x30/0x40 [ 78.786507][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.787280][ T4944] dump_stack+0x1c/0x5c [ 78.787969][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.788804][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.789612][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.790422][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.791132][ T4944] inet_sendmsg+0x154/0x284 [ 78.791821][ T4944] __sys_sendto+0x30c/0x420 [ 78.792478][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.793186][ T4944] invoke_syscall+0x98/0x2b0 [ 78.793879][ T4944] el0_svc_common+0x138/0x258 [ 78.794629][ T4944] do_el0_svc+0x58/0x13c [ 78.795324][ T4944] el0_svc+0x78/0x1d0 [ 78.796002][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.796819][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.798816][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.800896][ T4944] CPU: 1 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.801984][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.803659][ T4944] Call trace: [ 78.804182][ T4944] dump_backtrace+0x0/0x458 [ 78.804917][ T4944] show_stack+0x2c/0x3c [ 78.805533][ T4944] __dump_stack+0x30/0x40 [ 78.806169][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.806887][ T4944] dump_stack+0x1c/0x5c [ 78.807534][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.808347][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.809094][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.809852][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.810570][ T4944] inet_sendmsg+0x154/0x284 [ 78.811235][ T4944] __sys_sendto+0x30c/0x420 [ 78.811882][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.812625][ T4944] invoke_syscall+0x98/0x2b0 [ 78.813367][ T4944] el0_svc_common+0x138/0x258 [ 78.814113][ T4944] do_el0_svc+0x58/0x13c [ 78.814848][ T4944] el0_svc+0x78/0x1d0 [ 78.815511][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.816335][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.817998][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.819774][ T4944] CPU: 1 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.820907][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.822516][ T4944] Call trace: [ 78.823034][ T4944] dump_backtrace+0x0/0x458 [ 78.823767][ T4944] show_stack+0x2c/0x3c [ 78.824442][ T4944] __dump_stack+0x30/0x40 [ 78.825109][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.825885][ T4944] dump_stack+0x1c/0x5c [ 78.826583][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.827499][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.828278][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.829040][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.829763][ T4944] inet_sendmsg+0x154/0x284 [ 78.830523][ T4944] __sys_sendto+0x30c/0x420 [ 78.831283][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.832058][ T4944] invoke_syscall+0x98/0x2b0 [ 78.832768][ T4944] el0_svc_common+0x138/0x258 [ 78.833523][ T4944] do_el0_svc+0x58/0x13c [ 78.834226][ T4944] el0_svc+0x78/0x1d0 [ 78.834883][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.835745][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.837494][ T4944] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.839169][ T4944] CPU: 1 PID: 4944 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.840300][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.842022][ T4944] Call trace: [ 78.842547][ T4944] dump_backtrace+0x0/0x458 [ 78.843292][ T4944] show_stack+0x2c/0x3c [ 78.843963][ T4944] __dump_stack+0x30/0x40 [ 78.844643][ T4944] dump_stack_lvl+0xf4/0x15c [ 78.845360][ T4944] dump_stack+0x1c/0x5c [ 78.845954][ T4944] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.846765][ T4944] dccp_xmit_packet+0x298/0x448 [ 78.847565][ T4944] dccp_write_xmit+0x118/0x1d0 [ 78.848367][ T4944] dccp_sendmsg+0x550/0x8b8 [ 78.849017][ T4944] inet_sendmsg+0x154/0x284 [ 78.849749][ T4944] __sys_sendto+0x30c/0x420 [ 78.850479][ T4944] __arm64_sys_sendto+0xd8/0xf8 [ 78.851297][ T4944] invoke_syscall+0x98/0x2b0 [ 78.851979][ T4944] el0_svc_common+0x138/0x258 [ 78.852799][ T4944] do_el0_svc+0x58/0x13c [ 78.853492][ T4944] el0_svc+0x78/0x1d0 [ 78.854152][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 78.854893][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 78.869480][ T4946] dccp_xmit_packet: Payload too large (65475) for featneg. [ 78.878182][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.879914][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 78.881166][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.882672][ T4946] Call trace: [ 78.883191][ T4946] dump_backtrace+0x0/0x458 [ 78.883916][ T4946] show_stack+0x2c/0x3c [ 78.884570][ T4946] __dump_stack+0x30/0x40 [ 78.885238][ T4946] dump_stack_lvl+0xf4/0x15c [ 78.885937][ T4946] dump_stack+0x1c/0x5c [ 78.886565][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.887344][ T4946] dccp_xmit_packet+0x298/0x448 [ 78.888059][ T4946] dccp_write_xmit+0x118/0x1d0 [ 78.888754][ T4946] dccp_sendmsg+0x550/0x8b8 [ 78.889409][ T4946] inet_sendmsg+0x154/0x284 [ 78.890028][ T4946] __sys_sendto+0x30c/0x420 [ 78.890671][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 78.891336][ T4946] invoke_syscall+0x98/0x2b0 [ 78.891958][ T4946] el0_svc_common+0x138/0x258 [ 78.892606][ T4946] do_el0_svc+0x58/0x13c [ 78.893197][ T4946] el0_svc+0x78/0x1d0 [ 78.893744][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 78.894437][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 78.895827][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.897430][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 78.898433][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.899801][ T4946] Call trace: [ 78.900254][ T4946] dump_backtrace+0x0/0x458 [ 78.900965][ T4946] show_stack+0x2c/0x3c [ 78.901626][ T4946] __dump_stack+0x30/0x40 [ 78.902328][ T4946] dump_stack_lvl+0xf4/0x15c [ 78.903107][ T4946] dump_stack+0x1c/0x5c [ 78.903755][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.904569][ T4946] dccp_xmit_packet+0x298/0x448 [ 78.905311][ T4946] dccp_write_xmit+0x118/0x1d0 [ 78.906100][ T4946] dccp_sendmsg+0x550/0x8b8 [ 78.906871][ T4946] inet_sendmsg+0x154/0x284 [ 78.907607][ T4946] __sys_sendto+0x30c/0x420 [ 78.908330][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 78.909105][ T4946] invoke_syscall+0x98/0x2b0 [ 78.909773][ T4946] el0_svc_common+0x138/0x258 [ 78.910552][ T4946] do_el0_svc+0x58/0x13c [ 78.911227][ T4946] el0_svc+0x78/0x1d0 [ 78.911910][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 78.912798][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 78.914239][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.915884][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 78.916986][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.918479][ T4946] Call trace: [ 78.918973][ T4946] dump_backtrace+0x0/0x458 [ 78.919702][ T4946] show_stack+0x2c/0x3c [ 78.920380][ T4946] __dump_stack+0x30/0x40 [ 78.921080][ T4946] dump_stack_lvl+0xf4/0x15c [ 78.921817][ T4946] dump_stack+0x1c/0x5c [ 78.922537][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.923380][ T4946] dccp_xmit_packet+0x298/0x448 [ 78.924149][ T4946] dccp_write_xmit+0x118/0x1d0 [ 78.924921][ T4946] dccp_sendmsg+0x550/0x8b8 [ 78.925680][ T4946] inet_sendmsg+0x154/0x284 [ 78.926562][ T4946] __sys_sendto+0x30c/0x420 [ 78.927280][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 78.928080][ T4946] invoke_syscall+0x98/0x2b0 [ 78.928833][ T4946] el0_svc_common+0x138/0x258 [ 78.929588][ T4946] do_el0_svc+0x58/0x13c [ 78.930312][ T4946] el0_svc+0x78/0x1d0 [ 78.930997][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 78.931902][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 78.933283][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.935020][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 78.936106][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.937598][ T4946] Call trace: [ 78.938135][ T4946] dump_backtrace+0x0/0x458 [ 78.938831][ T4946] show_stack+0x2c/0x3c [ 78.939505][ T4946] __dump_stack+0x30/0x40 [ 78.940234][ T4946] dump_stack_lvl+0xf4/0x15c [ 78.940994][ T4946] dump_stack+0x1c/0x5c [ 78.941692][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.942643][ T4946] dccp_xmit_packet+0x298/0x448 [ 78.943365][ T4946] dccp_write_xmit+0x118/0x1d0 [ 78.944207][ T4946] dccp_sendmsg+0x550/0x8b8 [ 78.944985][ T4946] inet_sendmsg+0x154/0x284 [ 78.945748][ T4946] __sys_sendto+0x30c/0x420 [ 78.946485][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 78.947222][ T4946] invoke_syscall+0x98/0x2b0 [ 78.947958][ T4946] el0_svc_common+0x138/0x258 [ 78.948672][ T4946] do_el0_svc+0x58/0x13c [ 78.949401][ T4946] el0_svc+0x78/0x1d0 [ 78.950058][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 78.950858][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 78.953080][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.954773][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 78.955876][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.957511][ T4946] Call trace: [ 78.958016][ T4946] dump_backtrace+0x0/0x458 [ 78.958772][ T4946] show_stack+0x2c/0x3c [ 78.959419][ T4946] __dump_stack+0x30/0x40 [ 78.960122][ T4946] dump_stack_lvl+0xf4/0x15c [ 78.960825][ T4946] dump_stack+0x1c/0x5c [ 78.961469][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.962352][ T4946] dccp_xmit_packet+0x298/0x448 [ 78.963169][ T4946] dccp_write_xmit+0x118/0x1d0 [ 78.963949][ T4946] dccp_sendmsg+0x550/0x8b8 [ 78.964771][ T4946] inet_sendmsg+0x154/0x284 [ 78.965457][ T4946] __sys_sendto+0x30c/0x420 [ 78.966193][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 78.966959][ T4946] invoke_syscall+0x98/0x2b0 [ 78.967758][ T4946] el0_svc_common+0x138/0x258 [ 78.968466][ T4946] do_el0_svc+0x58/0x13c [ 78.969185][ T4946] el0_svc+0x78/0x1d0 [ 78.969775][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 78.970563][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 78.971521][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.973573][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 78.974721][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.976334][ T4946] Call trace: [ 78.976861][ T4946] dump_backtrace+0x0/0x458 [ 78.977551][ T4946] show_stack+0x2c/0x3c [ 78.978267][ T4946] __dump_stack+0x30/0x40 [ 78.978894][ T4946] dump_stack_lvl+0xf4/0x15c [ 78.979673][ T4946] dump_stack+0x1c/0x5c [ 78.980349][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 78.981201][ T4946] dccp_xmit_packet+0x298/0x448 [ 78.982024][ T4946] dccp_write_xmit+0x118/0x1d0 [ 78.982793][ T4946] dccp_sendmsg+0x550/0x8b8 [ 78.983560][ T4946] inet_sendmsg+0x154/0x284 [ 78.984289][ T4946] __sys_sendto+0x30c/0x420 [ 78.984993][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 78.985736][ T4946] invoke_syscall+0x98/0x2b0 [ 78.986457][ T4946] el0_svc_common+0x138/0x258 [ 78.987244][ T4946] do_el0_svc+0x58/0x13c [ 78.987879][ T4946] el0_svc+0x78/0x1d0 [ 78.988578][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 78.989432][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 78.991120][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 78.993075][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 78.994132][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.995741][ T4946] Call trace: [ 78.996263][ T4946] dump_backtrace+0x0/0x458 [ 78.996971][ T4946] show_stack+0x2c/0x3c [ 78.997602][ T4946] __dump_stack+0x30/0x40 [ 78.998220][ T4946] dump_stack_lvl+0xf4/0x15c [ 78.998917][ T4946] dump_stack+0x1c/0x5c [ 78.999547][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.000467][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.001256][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.002037][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.002871][ T4946] inet_sendmsg+0x154/0x284 [ 79.003600][ T4946] __sys_sendto+0x30c/0x420 [ 79.004268][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.004998][ T4946] invoke_syscall+0x98/0x2b0 [ 79.005714][ T4946] el0_svc_common+0x138/0x258 [ 79.006478][ T4946] do_el0_svc+0x58/0x13c [ 79.007146][ T4946] el0_svc+0x78/0x1d0 [ 79.007824][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.008639][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.009571][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.011338][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.012418][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.013941][ T4946] Call trace: [ 79.014405][ T4946] dump_backtrace+0x0/0x458 [ 79.015107][ T4946] show_stack+0x2c/0x3c [ 79.015787][ T4946] __dump_stack+0x30/0x40 [ 79.016508][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.017223][ T4946] dump_stack+0x1c/0x5c [ 79.017920][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.018775][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.019600][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.020371][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.021128][ T4946] inet_sendmsg+0x154/0x284 [ 79.021781][ T4946] __sys_sendto+0x30c/0x420 [ 79.022513][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.023248][ T4946] invoke_syscall+0x98/0x2b0 [ 79.023996][ T4946] el0_svc_common+0x138/0x258 [ 79.024623][ T4946] do_el0_svc+0x58/0x13c [ 79.025354][ T4946] el0_svc+0x78/0x1d0 [ 79.025993][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.026731][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.027896][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.029656][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.030801][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.032369][ T4946] Call trace: [ 79.032886][ T4946] dump_backtrace+0x0/0x458 [ 79.033666][ T4946] show_stack+0x2c/0x3c [ 79.034374][ T4946] __dump_stack+0x30/0x40 [ 79.035080][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.035764][ T4946] dump_stack+0x1c/0x5c [ 79.036389][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.037255][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.038029][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.038803][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.039517][ T4946] inet_sendmsg+0x154/0x284 [ 79.040262][ T4946] __sys_sendto+0x30c/0x420 [ 79.041052][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.041903][ T4946] invoke_syscall+0x98/0x2b0 [ 79.042623][ T4946] el0_svc_common+0x138/0x258 [ 79.043338][ T4946] do_el0_svc+0x58/0x13c [ 79.043977][ T4946] el0_svc+0x78/0x1d0 [ 79.044585][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.045289][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.046537][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.048388][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.049579][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.051207][ T4946] Call trace: [ 79.051719][ T4946] dump_backtrace+0x0/0x458 [ 79.052482][ T4946] show_stack+0x2c/0x3c [ 79.053142][ T4946] __dump_stack+0x30/0x40 [ 79.053802][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.054515][ T4946] dump_stack+0x1c/0x5c [ 79.055225][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.056098][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.056883][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.057665][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.058444][ T4946] inet_sendmsg+0x154/0x284 [ 79.059210][ T4946] __sys_sendto+0x30c/0x420 [ 79.059915][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.060748][ T4946] invoke_syscall+0x98/0x2b0 [ 79.061525][ T4946] el0_svc_common+0x138/0x258 [ 79.062231][ T4946] do_el0_svc+0x58/0x13c [ 79.062943][ T4946] el0_svc+0x78/0x1d0 [ 79.063573][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.064427][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.065769][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.067591][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.068706][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.070308][ T4946] Call trace: [ 79.070802][ T4946] dump_backtrace+0x0/0x458 [ 79.071531][ T4946] show_stack+0x2c/0x3c [ 79.072198][ T4946] __dump_stack+0x30/0x40 [ 79.072924][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.073702][ T4946] dump_stack+0x1c/0x5c [ 79.074370][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.075284][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.076102][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.076905][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.077620][ T4946] inet_sendmsg+0x154/0x284 [ 79.078326][ T4946] __sys_sendto+0x30c/0x420 [ 79.079067][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.079881][ T4946] invoke_syscall+0x98/0x2b0 [ 79.080571][ T4946] el0_svc_common+0x138/0x258 [ 79.081331][ T4946] do_el0_svc+0x58/0x13c [ 79.082000][ T4946] el0_svc+0x78/0x1d0 [ 79.082655][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.083519][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.084701][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.086520][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.087727][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.089238][ T4946] Call trace: [ 79.089691][ T4946] dump_backtrace+0x0/0x458 [ 79.090373][ T4946] show_stack+0x2c/0x3c [ 79.091050][ T4946] __dump_stack+0x30/0x40 [ 79.091712][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.092416][ T4946] dump_stack+0x1c/0x5c [ 79.093101][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.094030][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.094824][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.095600][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.096317][ T4946] inet_sendmsg+0x154/0x284 [ 79.097060][ T4946] __sys_sendto+0x30c/0x420 [ 79.097790][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.098558][ T4946] invoke_syscall+0x98/0x2b0 [ 79.099324][ T4946] el0_svc_common+0x138/0x258 [ 79.100071][ T4946] do_el0_svc+0x58/0x13c [ 79.100741][ T4946] el0_svc+0x78/0x1d0 [ 79.101350][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.102152][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.103153][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.104802][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.105995][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.107585][ T4946] Call trace: [ 79.108145][ T4946] dump_backtrace+0x0/0x458 [ 79.108902][ T4946] show_stack+0x2c/0x3c [ 79.109601][ T4946] __dump_stack+0x30/0x40 [ 79.110307][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.111032][ T4946] dump_stack+0x1c/0x5c [ 79.111701][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.112597][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.113388][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.114123][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.114801][ T4946] inet_sendmsg+0x154/0x284 [ 79.115495][ T4946] __sys_sendto+0x30c/0x420 [ 79.116194][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.116993][ T4946] invoke_syscall+0x98/0x2b0 [ 79.117745][ T4946] el0_svc_common+0x138/0x258 [ 79.118523][ T4946] do_el0_svc+0x58/0x13c [ 79.119168][ T4946] el0_svc+0x78/0x1d0 [ 79.119796][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.120596][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.121571][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.123428][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.124555][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.126192][ T4946] Call trace: [ 79.126678][ T4946] dump_backtrace+0x0/0x458 [ 79.127422][ T4946] show_stack+0x2c/0x3c [ 79.128128][ T4946] __dump_stack+0x30/0x40 [ 79.128818][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.129597][ T4946] dump_stack+0x1c/0x5c [ 79.130266][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.131108][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.131845][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.132642][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.133408][ T4946] inet_sendmsg+0x154/0x284 [ 79.134107][ T4946] __sys_sendto+0x30c/0x420 [ 79.134825][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.135599][ T4946] invoke_syscall+0x98/0x2b0 [ 79.136279][ T4946] el0_svc_common+0x138/0x258 [ 79.137079][ T4946] do_el0_svc+0x58/0x13c [ 79.137787][ T4946] el0_svc+0x78/0x1d0 [ 79.138413][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.139263][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.140193][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.142581][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.143642][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.145153][ T4946] Call trace: [ 79.145621][ T4946] dump_backtrace+0x0/0x458 [ 79.146258][ T4946] show_stack+0x2c/0x3c [ 79.146903][ T4946] __dump_stack+0x30/0x40 [ 79.147545][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.148253][ T4946] dump_stack+0x1c/0x5c [ 79.148940][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.149770][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.150667][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.151425][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.152174][ T4946] inet_sendmsg+0x154/0x284 [ 79.152842][ T4946] __sys_sendto+0x30c/0x420 [ 79.153537][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.154286][ T4946] invoke_syscall+0x98/0x2b0 [ 79.155056][ T4946] el0_svc_common+0x138/0x258 [ 79.155758][ T4946] do_el0_svc+0x58/0x13c [ 79.156481][ T4946] el0_svc+0x78/0x1d0 [ 79.157176][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.157984][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.159321][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.161017][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.162246][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.163880][ T4946] Call trace: [ 79.164375][ T4946] dump_backtrace+0x0/0x458 [ 79.165036][ T4946] show_stack+0x2c/0x3c [ 79.165704][ T4946] __dump_stack+0x30/0x40 [ 79.166446][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.167214][ T4946] dump_stack+0x1c/0x5c [ 79.167901][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.168791][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.169553][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.170354][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.171105][ T4946] inet_sendmsg+0x154/0x284 [ 79.171789][ T4946] __sys_sendto+0x30c/0x420 [ 79.172487][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.173293][ T4946] invoke_syscall+0x98/0x2b0 [ 79.174012][ T4946] el0_svc_common+0x138/0x258 [ 79.174767][ T4946] do_el0_svc+0x58/0x13c [ 79.175485][ T4946] el0_svc+0x78/0x1d0 [ 79.176122][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.176946][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.178132][ T4946] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.179825][ T4946] CPU: 0 PID: 4946 Comm: syz.0.19 Not tainted syzkaller #0 [ 79.180939][ T4946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.182511][ T4946] Call trace: [ 79.183029][ T4946] dump_backtrace+0x0/0x458 [ 79.183786][ T4946] show_stack+0x2c/0x3c [ 79.184473][ T4946] __dump_stack+0x30/0x40 [ 79.185126][ T4946] dump_stack_lvl+0xf4/0x15c [ 79.185886][ T4946] dump_stack+0x1c/0x5c [ 79.186612][ T4946] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.187515][ T4946] dccp_xmit_packet+0x298/0x448 [ 79.188263][ T4946] dccp_write_xmit+0x118/0x1d0 [ 79.188994][ T4946] dccp_sendmsg+0x550/0x8b8 [ 79.189749][ T4946] inet_sendmsg+0x154/0x284 [ 79.190564][ T4946] __sys_sendto+0x30c/0x420 [ 79.191268][ T4946] __arm64_sys_sendto+0xd8/0xf8 [ 79.192062][ T4946] invoke_syscall+0x98/0x2b0 [ 79.192787][ T4946] el0_svc_common+0x138/0x258 [ 79.193567][ T4946] do_el0_svc+0x58/0x13c [ 79.194289][ T4946] el0_svc+0x78/0x1d0 [ 79.194941][ T4946] el0t_64_sync_handler+0xcc/0xe4 [ 79.195755][ T4946] el0t_64_sync+0x1a0/0x1a4 [ 79.208044][ T4948] dccp_xmit_packet: Payload too large (65475) for featneg. [ 79.215564][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.217178][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.218425][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.219943][ T4948] Call trace: [ 79.220425][ T4948] dump_backtrace+0x0/0x458 [ 79.221117][ T4948] show_stack+0x2c/0x3c [ 79.221775][ T4948] __dump_stack+0x30/0x40 [ 79.222492][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.223224][ T4948] dump_stack+0x1c/0x5c [ 79.223880][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.224746][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.225587][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.226406][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.227171][ T4948] inet_sendmsg+0x154/0x284 [ 79.227936][ T4948] __sys_sendto+0x30c/0x420 [ 79.228736][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.229582][ T4948] invoke_syscall+0x98/0x2b0 [ 79.230329][ T4948] el0_svc_common+0x138/0x258 [ 79.231087][ T4948] do_el0_svc+0x58/0x13c [ 79.231783][ T4948] el0_svc+0x78/0x1d0 [ 79.232473][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.233343][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.234678][ T4066] Bluetooth: hci0: command 0x040f tx timeout [ 79.236197][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.237977][ T4948] CPU: 1 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.239107][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.240678][ T4948] Call trace: [ 79.241184][ T4948] dump_backtrace+0x0/0x458 [ 79.241917][ T4948] show_stack+0x2c/0x3c [ 79.242592][ T4948] __dump_stack+0x30/0x40 [ 79.243319][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.244093][ T4948] dump_stack+0x1c/0x5c [ 79.244766][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.245687][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.246451][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.247136][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.247885][ T4948] inet_sendmsg+0x154/0x284 [ 79.248590][ T4948] __sys_sendto+0x30c/0x420 [ 79.249278][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.250041][ T4948] invoke_syscall+0x98/0x2b0 [ 79.250868][ T4948] el0_svc_common+0x138/0x258 [ 79.251722][ T4948] do_el0_svc+0x58/0x13c [ 79.252389][ T4948] el0_svc+0x78/0x1d0 [ 79.253021][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.253789][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.255913][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.257677][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.258759][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.260268][ T4948] Call trace: [ 79.260748][ T4948] dump_backtrace+0x0/0x458 [ 79.261544][ T4948] show_stack+0x2c/0x3c [ 79.262195][ T4948] __dump_stack+0x30/0x40 [ 79.262894][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.263647][ T4948] dump_stack+0x1c/0x5c [ 79.264356][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.265228][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.265953][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.266637][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.267345][ T4948] inet_sendmsg+0x154/0x284 [ 79.268115][ T4948] __sys_sendto+0x30c/0x420 [ 79.268889][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.269683][ T4948] invoke_syscall+0x98/0x2b0 [ 79.270392][ T4948] el0_svc_common+0x138/0x258 [ 79.271158][ T4948] do_el0_svc+0x58/0x13c [ 79.271861][ T4948] el0_svc+0x78/0x1d0 [ 79.272468][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.273243][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.275702][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.277449][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.278608][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.280271][ T4948] Call trace: [ 79.280813][ T4948] dump_backtrace+0x0/0x458 [ 79.281533][ T4948] show_stack+0x2c/0x3c [ 79.282211][ T4948] __dump_stack+0x30/0x40 [ 79.282954][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.283649][ T4948] dump_stack+0x1c/0x5c [ 79.284319][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.285181][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.286045][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.286811][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.287533][ T4948] inet_sendmsg+0x154/0x284 [ 79.288251][ T4948] __sys_sendto+0x30c/0x420 [ 79.289025][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.289826][ T4948] invoke_syscall+0x98/0x2b0 [ 79.290611][ T4948] el0_svc_common+0x138/0x258 [ 79.291405][ T4948] do_el0_svc+0x58/0x13c [ 79.292115][ T4948] el0_svc+0x78/0x1d0 [ 79.292717][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.293578][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.295385][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.297175][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.298271][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.299783][ T4948] Call trace: [ 79.300336][ T4948] dump_backtrace+0x0/0x458 [ 79.301090][ T4948] show_stack+0x2c/0x3c [ 79.301752][ T4948] __dump_stack+0x30/0x40 [ 79.302472][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.303235][ T4948] dump_stack+0x1c/0x5c [ 79.304035][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.304850][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.305693][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.306405][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.307110][ T4948] inet_sendmsg+0x154/0x284 [ 79.307802][ T4948] __sys_sendto+0x30c/0x420 [ 79.308542][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.309355][ T4948] invoke_syscall+0x98/0x2b0 [ 79.310070][ T4948] el0_svc_common+0x138/0x258 [ 79.310831][ T4948] do_el0_svc+0x58/0x13c [ 79.311479][ T4948] el0_svc+0x78/0x1d0 [ 79.312079][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.312906][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.316009][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.317844][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.319011][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.320642][ T4948] Call trace: [ 79.321171][ T4948] dump_backtrace+0x0/0x458 [ 79.321869][ T4948] show_stack+0x2c/0x3c [ 79.322526][ T4948] __dump_stack+0x30/0x40 [ 79.323239][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.323961][ T4948] dump_stack+0x1c/0x5c [ 79.324636][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.325524][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.326370][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.327137][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.327892][ T4948] inet_sendmsg+0x154/0x284 [ 79.328657][ T4948] __sys_sendto+0x30c/0x420 [ 79.329432][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.330215][ T4948] invoke_syscall+0x98/0x2b0 [ 79.330918][ T4948] el0_svc_common+0x138/0x258 [ 79.331664][ T4948] do_el0_svc+0x58/0x13c [ 79.332397][ T4948] el0_svc+0x78/0x1d0 [ 79.333069][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.333939][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.334933][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.336634][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.337800][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.339333][ T4948] Call trace: [ 79.339838][ T4948] dump_backtrace+0x0/0x458 [ 79.340521][ T4948] show_stack+0x2c/0x3c [ 79.341107][ T4948] __dump_stack+0x30/0x40 [ 79.341794][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.342563][ T4948] dump_stack+0x1c/0x5c [ 79.343229][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.344073][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.344764][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.345426][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.346056][ T4948] inet_sendmsg+0x154/0x284 [ 79.346704][ T4948] __sys_sendto+0x30c/0x420 [ 79.347318][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.348050][ T4948] invoke_syscall+0x98/0x2b0 [ 79.348755][ T4948] el0_svc_common+0x138/0x258 [ 79.349519][ T4948] do_el0_svc+0x58/0x13c [ 79.350247][ T4948] el0_svc+0x78/0x1d0 [ 79.350894][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.351698][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.352826][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.354632][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.355717][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.357160][ T4948] Call trace: [ 79.357651][ T4948] dump_backtrace+0x0/0x458 [ 79.358344][ T4948] show_stack+0x2c/0x3c [ 79.359036][ T4948] __dump_stack+0x30/0x40 [ 79.359705][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.360437][ T4948] dump_stack+0x1c/0x5c [ 79.361068][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.361912][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.362689][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.363445][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.364116][ T4948] inet_sendmsg+0x154/0x284 [ 79.364796][ T4948] __sys_sendto+0x30c/0x420 [ 79.365539][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.366315][ T4948] invoke_syscall+0x98/0x2b0 [ 79.367043][ T4948] el0_svc_common+0x138/0x258 [ 79.367803][ T4948] do_el0_svc+0x58/0x13c [ 79.368481][ T4948] el0_svc+0x78/0x1d0 [ 79.369137][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.369952][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.370900][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.372883][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.374024][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.375463][ T4948] Call trace: [ 79.375969][ T4948] dump_backtrace+0x0/0x458 [ 79.376636][ T4948] show_stack+0x2c/0x3c [ 79.377265][ T4948] __dump_stack+0x30/0x40 [ 79.377907][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.378669][ T4948] dump_stack+0x1c/0x5c [ 79.379364][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.380274][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.381082][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.381862][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.382597][ T4948] inet_sendmsg+0x154/0x284 [ 79.383279][ T4948] __sys_sendto+0x30c/0x420 [ 79.383948][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.384674][ T4948] invoke_syscall+0x98/0x2b0 [ 79.385343][ T4948] el0_svc_common+0x138/0x258 [ 79.385997][ T4948] do_el0_svc+0x58/0x13c [ 79.386670][ T4948] el0_svc+0x78/0x1d0 [ 79.387238][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.388003][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.390986][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.392867][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.393969][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.395487][ T4948] Call trace: [ 79.396001][ T4948] dump_backtrace+0x0/0x458 [ 79.396707][ T4948] show_stack+0x2c/0x3c [ 79.397443][ T4948] __dump_stack+0x30/0x40 [ 79.398139][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.398868][ T4948] dump_stack+0x1c/0x5c [ 79.399532][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.400431][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.401169][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.401990][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.402770][ T4948] inet_sendmsg+0x154/0x284 [ 79.403577][ T4948] __sys_sendto+0x30c/0x420 [ 79.404331][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.405138][ T4948] invoke_syscall+0x98/0x2b0 [ 79.405870][ T4948] el0_svc_common+0x138/0x258 [ 79.406631][ T4948] do_el0_svc+0x58/0x13c [ 79.407320][ T4948] el0_svc+0x78/0x1d0 [ 79.407947][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.408744][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.409787][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.411409][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.412652][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.414207][ T4948] Call trace: [ 79.414715][ T4948] dump_backtrace+0x0/0x458 [ 79.415394][ T4948] show_stack+0x2c/0x3c [ 79.416007][ T4948] __dump_stack+0x30/0x40 [ 79.416676][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.417432][ T4948] dump_stack+0x1c/0x5c [ 79.418063][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.418927][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.419647][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.420477][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.421171][ T4948] inet_sendmsg+0x154/0x284 [ 79.421783][ T4948] __sys_sendto+0x30c/0x420 [ 79.422453][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.423215][ T4948] invoke_syscall+0x98/0x2b0 [ 79.423948][ T4948] el0_svc_common+0x138/0x258 [ 79.424675][ T4948] do_el0_svc+0x58/0x13c [ 79.425353][ T4948] el0_svc+0x78/0x1d0 [ 79.426055][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.426909][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.427894][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.429569][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.430607][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.432302][ T4948] Call trace: [ 79.432843][ T4948] dump_backtrace+0x0/0x458 [ 79.433587][ T4948] show_stack+0x2c/0x3c [ 79.434312][ T4948] __dump_stack+0x30/0x40 [ 79.435009][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.435753][ T4948] dump_stack+0x1c/0x5c [ 79.436463][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.437373][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.438134][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.438866][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.439533][ T4948] inet_sendmsg+0x154/0x284 [ 79.440239][ T4948] __sys_sendto+0x30c/0x420 [ 79.440973][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.441769][ T4948] invoke_syscall+0x98/0x2b0 [ 79.442560][ T4948] el0_svc_common+0x138/0x258 [ 79.443322][ T4948] do_el0_svc+0x58/0x13c [ 79.443998][ T4948] el0_svc+0x78/0x1d0 [ 79.444626][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.445432][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.446369][ T4948] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.448129][ T4948] CPU: 0 PID: 4948 Comm: syz.0.20 Not tainted syzkaller #0 [ 79.449310][ T4948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.450941][ T4948] Call trace: [ 79.451528][ T4948] dump_backtrace+0x0/0x458 [ 79.452249][ T4948] show_stack+0x2c/0x3c [ 79.452967][ T4948] __dump_stack+0x30/0x40 [ 79.453600][ T4948] dump_stack_lvl+0xf4/0x15c [ 79.454343][ T4948] dump_stack+0x1c/0x5c [ 79.455065][ T4948] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.455906][ T4948] dccp_xmit_packet+0x298/0x448 [ 79.456678][ T4948] dccp_write_xmit+0x118/0x1d0 [ 79.457427][ T4948] dccp_sendmsg+0x550/0x8b8 [ 79.458160][ T4948] inet_sendmsg+0x154/0x284 [ 79.458863][ T4948] __sys_sendto+0x30c/0x420 [ 79.459522][ T4948] __arm64_sys_sendto+0xd8/0xf8 [ 79.460236][ T4948] invoke_syscall+0x98/0x2b0 [ 79.460913][ T4948] el0_svc_common+0x138/0x258 [ 79.461612][ T4948] do_el0_svc+0x58/0x13c [ 79.462265][ T4948] el0_svc+0x78/0x1d0 [ 79.462822][ T4948] el0t_64_sync_handler+0xcc/0xe4 [ 79.463592][ T4948] el0t_64_sync+0x1a0/0x1a4 [ 79.478414][ T4950] dccp_xmit_packet: Payload too large (65475) for featneg. [ 79.495154][ T4952] dccp_xmit_packet: Payload too large (65475) for featneg. [ 79.504326][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.506078][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.507192][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.508750][ T4952] Call trace: [ 79.509239][ T4952] dump_backtrace+0x0/0x458 [ 79.509938][ T4952] show_stack+0x2c/0x3c [ 79.510618][ T4952] __dump_stack+0x30/0x40 [ 79.511324][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.512019][ T4952] dump_stack+0x1c/0x5c [ 79.512628][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.513455][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.514177][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.514901][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.515602][ T4952] inet_sendmsg+0x154/0x284 [ 79.516352][ T4952] __sys_sendto+0x30c/0x420 [ 79.517069][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.517846][ T4952] invoke_syscall+0x98/0x2b0 [ 79.518585][ T4952] el0_svc_common+0x138/0x258 [ 79.519352][ T4952] do_el0_svc+0x58/0x13c [ 79.520007][ T4952] el0_svc+0x78/0x1d0 [ 79.520623][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.521417][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.522875][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.524435][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.525622][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.527178][ T4952] Call trace: [ 79.527673][ T4952] dump_backtrace+0x0/0x458 [ 79.528376][ T4952] show_stack+0x2c/0x3c [ 79.529027][ T4952] __dump_stack+0x30/0x40 [ 79.529714][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.530435][ T4952] dump_stack+0x1c/0x5c [ 79.531122][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.531981][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.532799][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.533585][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.534323][ T4952] inet_sendmsg+0x154/0x284 [ 79.535032][ T4952] __sys_sendto+0x30c/0x420 [ 79.535729][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.536470][ T4952] invoke_syscall+0x98/0x2b0 [ 79.537150][ T4952] el0_svc_common+0x138/0x258 [ 79.537902][ T4952] do_el0_svc+0x58/0x13c [ 79.538564][ T4952] el0_svc+0x78/0x1d0 [ 79.539224][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.539977][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.541197][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.543839][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.544990][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.546625][ T4952] Call trace: [ 79.547132][ T4952] dump_backtrace+0x0/0x458 [ 79.547873][ T4952] show_stack+0x2c/0x3c [ 79.548512][ T4952] __dump_stack+0x30/0x40 [ 79.549223][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.549980][ T4952] dump_stack+0x1c/0x5c [ 79.550623][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.551479][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.552198][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.552904][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.553637][ T4952] inet_sendmsg+0x154/0x284 [ 79.554288][ T4952] __sys_sendto+0x30c/0x420 [ 79.555001][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.555735][ T4952] invoke_syscall+0x98/0x2b0 [ 79.556484][ T4952] el0_svc_common+0x138/0x258 [ 79.557186][ T4952] do_el0_svc+0x58/0x13c [ 79.557844][ T4952] el0_svc+0x78/0x1d0 [ 79.558496][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.559316][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.560266][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.562086][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.563225][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.564784][ T4952] Call trace: [ 79.565282][ T4952] dump_backtrace+0x0/0x458 [ 79.565989][ T4952] show_stack+0x2c/0x3c [ 79.566610][ T4952] __dump_stack+0x30/0x40 [ 79.567252][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.568040][ T4952] dump_stack+0x1c/0x5c [ 79.568748][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.569621][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.570378][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.571119][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.571832][ T4952] inet_sendmsg+0x154/0x284 [ 79.572559][ T4952] __sys_sendto+0x30c/0x420 [ 79.573276][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.574043][ T4952] invoke_syscall+0x98/0x2b0 [ 79.574804][ T4952] el0_svc_common+0x138/0x258 [ 79.575525][ T4952] do_el0_svc+0x58/0x13c [ 79.576248][ T4952] el0_svc+0x78/0x1d0 [ 79.576882][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.577649][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.578465][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.580233][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.581449][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.583047][ T4952] Call trace: [ 79.583559][ T4952] dump_backtrace+0x0/0x458 [ 79.584280][ T4952] show_stack+0x2c/0x3c [ 79.584933][ T4952] __dump_stack+0x30/0x40 [ 79.585701][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.586523][ T4952] dump_stack+0x1c/0x5c [ 79.587199][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.588159][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.588947][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.589725][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.590425][ T4952] inet_sendmsg+0x154/0x284 [ 79.591114][ T4952] __sys_sendto+0x30c/0x420 [ 79.591879][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.592627][ T4952] invoke_syscall+0x98/0x2b0 [ 79.593373][ T4952] el0_svc_common+0x138/0x258 [ 79.594162][ T4952] do_el0_svc+0x58/0x13c [ 79.594921][ T4952] el0_svc+0x78/0x1d0 [ 79.595564][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.596415][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.597629][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.599341][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.600495][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.602103][ T4952] Call trace: [ 79.602698][ T4952] dump_backtrace+0x0/0x458 [ 79.603416][ T4952] show_stack+0x2c/0x3c [ 79.604071][ T4952] __dump_stack+0x30/0x40 [ 79.604791][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.605541][ T4952] dump_stack+0x1c/0x5c [ 79.606195][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.607007][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.607799][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.608578][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.609304][ T4952] inet_sendmsg+0x154/0x284 [ 79.610049][ T4952] __sys_sendto+0x30c/0x420 [ 79.610770][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.611552][ T4952] invoke_syscall+0x98/0x2b0 [ 79.612232][ T4952] el0_svc_common+0x138/0x258 [ 79.612937][ T4952] do_el0_svc+0x58/0x13c [ 79.613620][ T4952] el0_svc+0x78/0x1d0 [ 79.614324][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.615093][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.616265][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.618026][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.619229][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.620749][ T4952] Call trace: [ 79.621248][ T4952] dump_backtrace+0x0/0x458 [ 79.621958][ T4952] show_stack+0x2c/0x3c [ 79.622629][ T4952] __dump_stack+0x30/0x40 [ 79.623368][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.624125][ T4952] dump_stack+0x1c/0x5c [ 79.624806][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.625732][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.626593][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.627420][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.628173][ T4952] inet_sendmsg+0x154/0x284 [ 79.628943][ T4952] __sys_sendto+0x30c/0x420 [ 79.629634][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.630434][ T4952] invoke_syscall+0x98/0x2b0 [ 79.631157][ T4952] el0_svc_common+0x138/0x258 [ 79.631906][ T4952] do_el0_svc+0x58/0x13c [ 79.632567][ T4952] el0_svc+0x78/0x1d0 [ 79.633200][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.634052][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.635031][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.636873][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.637999][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.639677][ T4952] Call trace: [ 79.640179][ T4952] dump_backtrace+0x0/0x458 [ 79.640852][ T4952] show_stack+0x2c/0x3c [ 79.641480][ T4952] __dump_stack+0x30/0x40 [ 79.642145][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.642945][ T4952] dump_stack+0x1c/0x5c [ 79.643673][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.644546][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.645338][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.646076][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.646795][ T4952] inet_sendmsg+0x154/0x284 [ 79.647552][ T4952] __sys_sendto+0x30c/0x420 [ 79.648282][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.649090][ T4952] invoke_syscall+0x98/0x2b0 [ 79.649846][ T4952] el0_svc_common+0x138/0x258 [ 79.650621][ T4952] do_el0_svc+0x58/0x13c [ 79.651303][ T4952] el0_svc+0x78/0x1d0 [ 79.651955][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.652777][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.654241][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.656025][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.657220][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.658846][ T4952] Call trace: [ 79.659391][ T4952] dump_backtrace+0x0/0x458 [ 79.660110][ T4952] show_stack+0x2c/0x3c [ 79.660809][ T4952] __dump_stack+0x30/0x40 [ 79.661485][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.662191][ T4952] dump_stack+0x1c/0x5c [ 79.662849][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.663764][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.664545][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.665332][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.666027][ T4952] inet_sendmsg+0x154/0x284 [ 79.666715][ T4952] __sys_sendto+0x30c/0x420 [ 79.667464][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.668302][ T4952] invoke_syscall+0x98/0x2b0 [ 79.669014][ T4952] el0_svc_common+0x138/0x258 [ 79.669737][ T4952] do_el0_svc+0x58/0x13c [ 79.670373][ T4952] el0_svc+0x78/0x1d0 [ 79.670987][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.671819][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.672775][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.674588][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.675771][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.677376][ T4952] Call trace: [ 79.677913][ T4952] dump_backtrace+0x0/0x458 [ 79.678651][ T4952] show_stack+0x2c/0x3c [ 79.679291][ T4952] __dump_stack+0x30/0x40 [ 79.679927][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.680682][ T4952] dump_stack+0x1c/0x5c [ 79.681327][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.682228][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.683046][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.683847][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.684568][ T4952] inet_sendmsg+0x154/0x284 [ 79.685319][ T4952] __sys_sendto+0x30c/0x420 [ 79.686085][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.686891][ T4952] invoke_syscall+0x98/0x2b0 [ 79.687631][ T4952] el0_svc_common+0x138/0x258 [ 79.688374][ T4952] do_el0_svc+0x58/0x13c [ 79.689043][ T4952] el0_svc+0x78/0x1d0 [ 79.689682][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.690488][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.691575][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.693445][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.694462][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.696045][ T4952] Call trace: [ 79.696550][ T4952] dump_backtrace+0x0/0x458 [ 79.697228][ T4952] show_stack+0x2c/0x3c [ 79.697895][ T4952] __dump_stack+0x30/0x40 [ 79.698602][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.699342][ T4952] dump_stack+0x1c/0x5c [ 79.699993][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.700790][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.701512][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.702193][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.702917][ T4952] inet_sendmsg+0x154/0x284 [ 79.703658][ T4952] __sys_sendto+0x30c/0x420 [ 79.704375][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.705139][ T4952] invoke_syscall+0x98/0x2b0 [ 79.705876][ T4952] el0_svc_common+0x138/0x258 [ 79.706621][ T4952] do_el0_svc+0x58/0x13c [ 79.707289][ T4952] el0_svc+0x78/0x1d0 [ 79.707939][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.708702][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.709652][ T4952] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.711265][ T4952] CPU: 0 PID: 4952 Comm: syz.0.22 Not tainted syzkaller #0 [ 79.712452][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.714092][ T4952] Call trace: [ 79.714664][ T4952] dump_backtrace+0x0/0x458 [ 79.715371][ T4952] show_stack+0x2c/0x3c [ 79.716018][ T4952] __dump_stack+0x30/0x40 [ 79.716696][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.717470][ T4952] dump_stack+0x1c/0x5c [ 79.718144][ T4952] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.719025][ T4952] dccp_xmit_packet+0x298/0x448 [ 79.719808][ T4952] dccp_write_xmit+0x118/0x1d0 [ 79.720601][ T4952] dccp_sendmsg+0x550/0x8b8 [ 79.721370][ T4952] inet_sendmsg+0x154/0x284 [ 79.722152][ T4952] __sys_sendto+0x30c/0x420 [ 79.722937][ T4952] __arm64_sys_sendto+0xd8/0xf8 [ 79.723719][ T4952] invoke_syscall+0x98/0x2b0 [ 79.724522][ T4952] el0_svc_common+0x138/0x258 [ 79.725329][ T4952] do_el0_svc+0x58/0x13c [ 79.726035][ T4952] el0_svc+0x78/0x1d0 [ 79.726699][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.727544][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.740335][ T4954] dccp_xmit_packet: Payload too large (65475) for featneg. [ 79.747927][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.749566][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.750646][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.752174][ T4954] Call trace: [ 79.752689][ T4954] dump_backtrace+0x0/0x458 [ 79.753422][ T4954] show_stack+0x2c/0x3c [ 79.754075][ T4954] __dump_stack+0x30/0x40 [ 79.754765][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.755483][ T4954] dump_stack+0x1c/0x5c [ 79.756149][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.757012][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.757769][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.758525][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.759222][ T4954] inet_sendmsg+0x154/0x284 [ 79.759898][ T4954] __sys_sendto+0x30c/0x420 [ 79.760624][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.761429][ T4954] invoke_syscall+0x98/0x2b0 [ 79.762136][ T4954] el0_svc_common+0x138/0x258 [ 79.762848][ T4954] do_el0_svc+0x58/0x13c [ 79.763533][ T4954] el0_svc+0x78/0x1d0 [ 79.764126][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.764905][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.766342][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.768136][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.769250][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.770782][ T4954] Call trace: [ 79.771282][ T4954] dump_backtrace+0x0/0x458 [ 79.772042][ T4954] show_stack+0x2c/0x3c [ 79.772720][ T4954] __dump_stack+0x30/0x40 [ 79.773400][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.774145][ T4954] dump_stack+0x1c/0x5c [ 79.774809][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.775664][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.776499][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.777313][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.778075][ T4954] inet_sendmsg+0x154/0x284 [ 79.778834][ T4954] __sys_sendto+0x30c/0x420 [ 79.779554][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.780293][ T4954] invoke_syscall+0x98/0x2b0 [ 79.781053][ T4954] el0_svc_common+0x138/0x258 [ 79.781786][ T4954] do_el0_svc+0x58/0x13c [ 79.782450][ T4954] el0_svc+0x78/0x1d0 [ 79.783070][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.783841][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.785627][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.787392][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.788475][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.789969][ T4954] Call trace: [ 79.790464][ T4954] dump_backtrace+0x0/0x458 [ 79.791156][ T4954] show_stack+0x2c/0x3c [ 79.791799][ T4954] __dump_stack+0x30/0x40 [ 79.792515][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.793320][ T4954] dump_stack+0x1c/0x5c [ 79.793988][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.794894][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.795665][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.796402][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.797144][ T4954] inet_sendmsg+0x154/0x284 [ 79.797864][ T4954] __sys_sendto+0x30c/0x420 [ 79.798600][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.799362][ T4954] invoke_syscall+0x98/0x2b0 [ 79.800076][ T4954] el0_svc_common+0x138/0x258 [ 79.800835][ T4954] do_el0_svc+0x58/0x13c [ 79.801523][ T4954] el0_svc+0x78/0x1d0 [ 79.802145][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.803013][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.804801][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.806679][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.807819][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.809382][ T4954] Call trace: [ 79.809862][ T4954] dump_backtrace+0x0/0x458 [ 79.810623][ T4954] show_stack+0x2c/0x3c [ 79.811289][ T4954] __dump_stack+0x30/0x40 [ 79.812038][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.812777][ T4954] dump_stack+0x1c/0x5c [ 79.813378][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.814221][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.814949][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.815715][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.816452][ T4954] inet_sendmsg+0x154/0x284 [ 79.817168][ T4954] __sys_sendto+0x30c/0x420 [ 79.817904][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.818725][ T4954] invoke_syscall+0x98/0x2b0 [ 79.819481][ T4954] el0_svc_common+0x138/0x258 [ 79.820224][ T4954] do_el0_svc+0x58/0x13c [ 79.820887][ T4954] el0_svc+0x78/0x1d0 [ 79.821553][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.822372][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.823362][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.825201][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.826258][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.827885][ T4954] Call trace: [ 79.828354][ T4954] dump_backtrace+0x0/0x458 [ 79.829025][ T4954] show_stack+0x2c/0x3c [ 79.829665][ T4954] __dump_stack+0x30/0x40 [ 79.830347][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.831061][ T4954] dump_stack+0x1c/0x5c [ 79.831769][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.832597][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.833375][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.834162][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.834885][ T4954] inet_sendmsg+0x154/0x284 [ 79.835599][ T4954] __sys_sendto+0x30c/0x420 [ 79.836289][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.837013][ T4954] invoke_syscall+0x98/0x2b0 [ 79.837678][ T4954] el0_svc_common+0x138/0x258 [ 79.838363][ T4954] do_el0_svc+0x58/0x13c [ 79.838985][ T4954] el0_svc+0x78/0x1d0 [ 79.839565][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.840250][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.841411][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.843330][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.844503][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.846157][ T4954] Call trace: [ 79.846706][ T4954] dump_backtrace+0x0/0x458 [ 79.847439][ T4954] show_stack+0x2c/0x3c [ 79.848121][ T4954] __dump_stack+0x30/0x40 [ 79.848882][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.849660][ T4954] dump_stack+0x1c/0x5c [ 79.850335][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.851283][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.852071][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.852839][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.853540][ T4954] inet_sendmsg+0x154/0x284 [ 79.854208][ T4954] __sys_sendto+0x30c/0x420 [ 79.854961][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.855804][ T4954] invoke_syscall+0x98/0x2b0 [ 79.856576][ T4954] el0_svc_common+0x138/0x258 [ 79.857429][ T4954] do_el0_svc+0x58/0x13c [ 79.858147][ T4954] el0_svc+0x78/0x1d0 [ 79.858764][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.859592][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.860532][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.862444][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.863524][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.865182][ T4954] Call trace: [ 79.865746][ T4954] dump_backtrace+0x0/0x458 [ 79.866469][ T4954] show_stack+0x2c/0x3c [ 79.867126][ T4954] __dump_stack+0x30/0x40 [ 79.867758][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.868498][ T4954] dump_stack+0x1c/0x5c [ 79.869179][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.870101][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.870860][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.871591][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.872328][ T4954] inet_sendmsg+0x154/0x284 [ 79.873056][ T4954] __sys_sendto+0x30c/0x420 [ 79.873788][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.874590][ T4954] invoke_syscall+0x98/0x2b0 [ 79.875325][ T4954] el0_svc_common+0x138/0x258 [ 79.876106][ T4954] do_el0_svc+0x58/0x13c [ 79.876832][ T4954] el0_svc+0x78/0x1d0 [ 79.877462][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.878267][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.879178][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.880970][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.882097][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.883755][ T4954] Call trace: [ 79.884336][ T4954] dump_backtrace+0x0/0x458 [ 79.885099][ T4954] show_stack+0x2c/0x3c [ 79.885800][ T4954] __dump_stack+0x30/0x40 [ 79.886492][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.887207][ T4954] dump_stack+0x1c/0x5c [ 79.887921][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.888810][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.889661][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.890435][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.891162][ T4954] inet_sendmsg+0x154/0x284 [ 79.891851][ T4954] __sys_sendto+0x30c/0x420 [ 79.892583][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.893419][ T4954] invoke_syscall+0x98/0x2b0 [ 79.894197][ T4954] el0_svc_common+0x138/0x258 [ 79.894949][ T4954] do_el0_svc+0x58/0x13c [ 79.895622][ T4954] el0_svc+0x78/0x1d0 [ 79.896272][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.897027][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.898226][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.899944][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.901084][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.902718][ T4954] Call trace: [ 79.903245][ T4954] dump_backtrace+0x0/0x458 [ 79.903916][ T4954] show_stack+0x2c/0x3c [ 79.904553][ T4954] __dump_stack+0x30/0x40 [ 79.905236][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.905984][ T4954] dump_stack+0x1c/0x5c [ 79.906636][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.907404][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.908143][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.908868][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.909595][ T4954] inet_sendmsg+0x154/0x284 [ 79.910286][ T4954] __sys_sendto+0x30c/0x420 [ 79.910966][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.911743][ T4954] invoke_syscall+0x98/0x2b0 [ 79.912504][ T4954] el0_svc_common+0x138/0x258 [ 79.913181][ T4954] do_el0_svc+0x58/0x13c [ 79.913818][ T4954] el0_svc+0x78/0x1d0 [ 79.914461][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.915320][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.916621][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.918440][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.919550][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.921228][ T4954] Call trace: [ 79.921733][ T4954] dump_backtrace+0x0/0x458 [ 79.922412][ T4954] show_stack+0x2c/0x3c [ 79.923053][ T4954] __dump_stack+0x30/0x40 [ 79.923763][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.924499][ T4954] dump_stack+0x1c/0x5c [ 79.925150][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.926094][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.926866][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.927642][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.928360][ T4954] inet_sendmsg+0x154/0x284 [ 79.929078][ T4954] __sys_sendto+0x30c/0x420 [ 79.929815][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.930571][ T4954] invoke_syscall+0x98/0x2b0 [ 79.931335][ T4954] el0_svc_common+0x138/0x258 [ 79.932084][ T4954] do_el0_svc+0x58/0x13c [ 79.932785][ T4954] el0_svc+0x78/0x1d0 [ 79.933401][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.934185][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.935094][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.936745][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.937824][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.939316][ T4954] Call trace: [ 79.939802][ T4954] dump_backtrace+0x0/0x458 [ 79.940518][ T4954] show_stack+0x2c/0x3c [ 79.941192][ T4954] __dump_stack+0x30/0x40 [ 79.941877][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.942623][ T4954] dump_stack+0x1c/0x5c [ 79.943311][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.944242][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.945102][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.945903][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.946649][ T4954] inet_sendmsg+0x154/0x284 [ 79.947365][ T4954] __sys_sendto+0x30c/0x420 [ 79.948072][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.948854][ T4954] invoke_syscall+0x98/0x2b0 [ 79.949580][ T4954] el0_svc_common+0x138/0x258 [ 79.950327][ T4954] do_el0_svc+0x58/0x13c [ 79.951004][ T4954] el0_svc+0x78/0x1d0 [ 79.951657][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.952422][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.954065][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.955807][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.956953][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.958614][ T4954] Call trace: [ 79.959187][ T4954] dump_backtrace+0x0/0x458 [ 79.959890][ T4954] show_stack+0x2c/0x3c [ 79.960513][ T4954] __dump_stack+0x30/0x40 [ 79.961170][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.961970][ T4954] dump_stack+0x1c/0x5c [ 79.962652][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.963521][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.964320][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.965107][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.965849][ T4954] inet_sendmsg+0x154/0x284 [ 79.966580][ T4954] __sys_sendto+0x30c/0x420 [ 79.967330][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.968116][ T4954] invoke_syscall+0x98/0x2b0 [ 79.968792][ T4954] el0_svc_common+0x138/0x258 [ 79.969547][ T4954] do_el0_svc+0x58/0x13c [ 79.970239][ T4954] el0_svc+0x78/0x1d0 [ 79.970889][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.971665][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.972706][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.974314][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.975332][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.976711][ T4954] Call trace: [ 79.977184][ T4954] dump_backtrace+0x0/0x458 [ 79.977788][ T4954] show_stack+0x2c/0x3c [ 79.978427][ T4954] __dump_stack+0x30/0x40 [ 79.979073][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.979815][ T4954] dump_stack+0x1c/0x5c [ 79.980478][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 79.981350][ T4954] dccp_xmit_packet+0x298/0x448 [ 79.982139][ T4954] dccp_write_xmit+0x118/0x1d0 [ 79.982908][ T4954] dccp_sendmsg+0x550/0x8b8 [ 79.983619][ T4954] inet_sendmsg+0x154/0x284 [ 79.984337][ T4954] __sys_sendto+0x30c/0x420 [ 79.985041][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 79.985801][ T4954] invoke_syscall+0x98/0x2b0 [ 79.986557][ T4954] el0_svc_common+0x138/0x258 [ 79.987356][ T4954] do_el0_svc+0x58/0x13c [ 79.988089][ T4954] el0_svc+0x78/0x1d0 [ 79.988734][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 79.989530][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 79.990695][ T4954] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 79.992403][ T4954] CPU: 0 PID: 4954 Comm: syz.0.23 Not tainted syzkaller #0 [ 79.993558][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.995472][ T4954] Call trace: [ 79.996012][ T4954] dump_backtrace+0x0/0x458 [ 79.996754][ T4954] show_stack+0x2c/0x3c [ 79.997426][ T4954] __dump_stack+0x30/0x40 [ 79.998107][ T4954] dump_stack_lvl+0xf4/0x15c [ 79.998860][ T4954] dump_stack+0x1c/0x5c [ 79.999542][ T4954] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.000367][ T4954] dccp_xmit_packet+0x298/0x448 [ 80.001114][ T4954] dccp_write_xmit+0x118/0x1d0 [ 80.001864][ T4954] dccp_sendmsg+0x550/0x8b8 [ 80.002606][ T4954] inet_sendmsg+0x154/0x284 [ 80.003374][ T4954] __sys_sendto+0x30c/0x420 [ 80.004127][ T4954] __arm64_sys_sendto+0xd8/0xf8 [ 80.004913][ T4954] invoke_syscall+0x98/0x2b0 [ 80.005649][ T4954] el0_svc_common+0x138/0x258 [ 80.006386][ T4954] do_el0_svc+0x58/0x13c [ 80.007056][ T4954] el0_svc+0x78/0x1d0 [ 80.007684][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 80.008526][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 80.026670][ T4956] dccp_xmit_packet: Payload too large (65475) for featneg. [ 80.034486][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.036325][ T4956] CPU: 1 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.037517][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.039139][ T4956] Call trace: [ 80.039658][ T4956] dump_backtrace+0x0/0x458 [ 80.040385][ T4956] show_stack+0x2c/0x3c [ 80.041039][ T4956] __dump_stack+0x30/0x40 [ 80.041706][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.042402][ T4956] dump_stack+0x1c/0x5c [ 80.043038][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.043871][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.044631][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.045380][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.046072][ T4956] inet_sendmsg+0x154/0x284 [ 80.046768][ T4956] __sys_sendto+0x30c/0x420 [ 80.047459][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.048169][ T4956] invoke_syscall+0x98/0x2b0 [ 80.048841][ T4956] el0_svc_common+0x138/0x258 [ 80.049536][ T4956] do_el0_svc+0x58/0x13c [ 80.050176][ T4956] el0_svc+0x78/0x1d0 [ 80.050786][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.051522][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.053606][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.055347][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.056505][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.058056][ T4956] Call trace: [ 80.058568][ T4956] dump_backtrace+0x0/0x458 [ 80.059276][ T4956] show_stack+0x2c/0x3c [ 80.059934][ T4956] __dump_stack+0x30/0x40 [ 80.060560][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.061291][ T4956] dump_stack+0x1c/0x5c [ 80.061891][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.062802][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.063601][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.064394][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.065125][ T4956] inet_sendmsg+0x154/0x284 [ 80.065863][ T4956] __sys_sendto+0x30c/0x420 [ 80.066628][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.067462][ T4956] invoke_syscall+0x98/0x2b0 [ 80.068255][ T4956] el0_svc_common+0x138/0x258 [ 80.069009][ T4956] do_el0_svc+0x58/0x13c [ 80.069768][ T4956] el0_svc+0x78/0x1d0 [ 80.070442][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.071250][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.073193][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.074947][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.076045][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.077590][ T4956] Call trace: [ 80.078070][ T4956] dump_backtrace+0x0/0x458 [ 80.078749][ T4956] show_stack+0x2c/0x3c [ 80.079428][ T4956] __dump_stack+0x30/0x40 [ 80.080091][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.080767][ T4956] dump_stack+0x1c/0x5c [ 80.081388][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.082204][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.082961][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.083726][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.084421][ T4956] inet_sendmsg+0x154/0x284 [ 80.085087][ T4956] __sys_sendto+0x30c/0x420 [ 80.085790][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.086556][ T4956] invoke_syscall+0x98/0x2b0 [ 80.087245][ T4956] el0_svc_common+0x138/0x258 [ 80.087991][ T4956] do_el0_svc+0x58/0x13c [ 80.088599][ T4956] el0_svc+0x78/0x1d0 [ 80.089215][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.089969][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.090771][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.092517][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.093624][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.095069][ T4956] Call trace: [ 80.095567][ T4956] dump_backtrace+0x0/0x458 [ 80.096284][ T4956] show_stack+0x2c/0x3c [ 80.096911][ T4956] __dump_stack+0x30/0x40 [ 80.097568][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.098329][ T4956] dump_stack+0x1c/0x5c [ 80.098951][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.099807][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.100537][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.101242][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.101905][ T4956] inet_sendmsg+0x154/0x284 [ 80.102634][ T4956] __sys_sendto+0x30c/0x420 [ 80.103346][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.104105][ T4956] invoke_syscall+0x98/0x2b0 [ 80.104810][ T4956] el0_svc_common+0x138/0x258 [ 80.105542][ T4956] do_el0_svc+0x58/0x13c [ 80.106160][ T4956] el0_svc+0x78/0x1d0 [ 80.106821][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.107605][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.109402][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.111064][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.112281][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.113824][ T4956] Call trace: [ 80.114369][ T4956] dump_backtrace+0x0/0x458 [ 80.115194][ T4956] show_stack+0x2c/0x3c [ 80.115864][ T4956] __dump_stack+0x30/0x40 [ 80.116515][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.117211][ T4956] dump_stack+0x1c/0x5c [ 80.117863][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.118646][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.119472][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.120252][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.120939][ T4956] inet_sendmsg+0x154/0x284 [ 80.121614][ T4956] __sys_sendto+0x30c/0x420 [ 80.122270][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.123081][ T4956] invoke_syscall+0x98/0x2b0 [ 80.123782][ T4956] el0_svc_common+0x138/0x258 [ 80.124525][ T4956] do_el0_svc+0x58/0x13c [ 80.125185][ T4956] el0_svc+0x78/0x1d0 [ 80.125815][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.126587][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.127606][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.129409][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.130554][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.132105][ T4956] Call trace: [ 80.132609][ T4956] dump_backtrace+0x0/0x458 [ 80.133363][ T4956] show_stack+0x2c/0x3c [ 80.134029][ T4956] __dump_stack+0x30/0x40 [ 80.134792][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.135547][ T4956] dump_stack+0x1c/0x5c [ 80.136220][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.137120][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.137883][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.138632][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.139408][ T4956] inet_sendmsg+0x154/0x284 [ 80.140164][ T4956] __sys_sendto+0x30c/0x420 [ 80.140909][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.141675][ T4956] invoke_syscall+0x98/0x2b0 [ 80.142409][ T4956] el0_svc_common+0x138/0x258 [ 80.143188][ T4956] do_el0_svc+0x58/0x13c [ 80.143866][ T4956] el0_svc+0x78/0x1d0 [ 80.144544][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.145379][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.146402][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.148124][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.149210][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.150703][ T4956] Call trace: [ 80.151230][ T4956] dump_backtrace+0x0/0x458 [ 80.151888][ T4956] show_stack+0x2c/0x3c [ 80.152524][ T4956] __dump_stack+0x30/0x40 [ 80.153183][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.153893][ T4956] dump_stack+0x1c/0x5c [ 80.154589][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.155482][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.156291][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.157044][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.157789][ T4956] inet_sendmsg+0x154/0x284 [ 80.158517][ T4956] __sys_sendto+0x30c/0x420 [ 80.159221][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.160005][ T4956] invoke_syscall+0x98/0x2b0 [ 80.160703][ T4956] el0_svc_common+0x138/0x258 [ 80.161445][ T4956] do_el0_svc+0x58/0x13c [ 80.162101][ T4956] el0_svc+0x78/0x1d0 [ 80.162705][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.163507][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.164358][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.166019][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.167144][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.168746][ T4956] Call trace: [ 80.169337][ T4956] dump_backtrace+0x0/0x458 [ 80.170002][ T4956] show_stack+0x2c/0x3c [ 80.170580][ T4956] __dump_stack+0x30/0x40 [ 80.171191][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.171868][ T4956] dump_stack+0x1c/0x5c [ 80.172484][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.173368][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.174177][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.174949][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.175650][ T4956] inet_sendmsg+0x154/0x284 [ 80.176365][ T4956] __sys_sendto+0x30c/0x420 [ 80.177094][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.177860][ T4956] invoke_syscall+0x98/0x2b0 [ 80.178575][ T4956] el0_svc_common+0x138/0x258 [ 80.179316][ T4956] do_el0_svc+0x58/0x13c [ 80.180018][ T4956] el0_svc+0x78/0x1d0 [ 80.180670][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.181461][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.183234][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.184925][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.186015][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.187618][ T4956] Call trace: [ 80.188140][ T4956] dump_backtrace+0x0/0x458 [ 80.188852][ T4956] show_stack+0x2c/0x3c [ 80.189505][ T4956] __dump_stack+0x30/0x40 [ 80.190176][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.190880][ T4956] dump_stack+0x1c/0x5c [ 80.191463][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.192320][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.193075][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.193795][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.194464][ T4956] inet_sendmsg+0x154/0x284 [ 80.195223][ T4956] __sys_sendto+0x30c/0x420 [ 80.195967][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.196760][ T4956] invoke_syscall+0x98/0x2b0 [ 80.197539][ T4956] el0_svc_common+0x138/0x258 [ 80.198352][ T4956] do_el0_svc+0x58/0x13c [ 80.199021][ T4956] el0_svc+0x78/0x1d0 [ 80.199619][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.200437][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.201585][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.203426][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.204581][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.206233][ T4956] Call trace: [ 80.206739][ T4956] dump_backtrace+0x0/0x458 [ 80.207408][ T4956] show_stack+0x2c/0x3c [ 80.208107][ T4956] __dump_stack+0x30/0x40 [ 80.208807][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.209512][ T4956] dump_stack+0x1c/0x5c [ 80.210188][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.211105][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.211823][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.212587][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.213264][ T4956] inet_sendmsg+0x154/0x284 [ 80.213995][ T4956] __sys_sendto+0x30c/0x420 [ 80.214742][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.215503][ T4956] invoke_syscall+0x98/0x2b0 [ 80.216264][ T4956] el0_svc_common+0x138/0x258 [ 80.217046][ T4956] do_el0_svc+0x58/0x13c [ 80.217735][ T4956] el0_svc+0x78/0x1d0 [ 80.218388][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.219198][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.220122][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.221925][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.223051][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.224600][ T4956] Call trace: [ 80.225096][ T4956] dump_backtrace+0x0/0x458 [ 80.225784][ T4956] show_stack+0x2c/0x3c [ 80.226434][ T4956] __dump_stack+0x30/0x40 [ 80.227095][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.227834][ T4956] dump_stack+0x1c/0x5c [ 80.228505][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.229423][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.230233][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.231059][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.231870][ T4956] inet_sendmsg+0x154/0x284 [ 80.232615][ T4956] __sys_sendto+0x30c/0x420 [ 80.233338][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.234170][ T4956] invoke_syscall+0x98/0x2b0 [ 80.234956][ T4956] el0_svc_common+0x138/0x258 [ 80.235770][ T4956] do_el0_svc+0x58/0x13c [ 80.236466][ T4956] el0_svc+0x78/0x1d0 [ 80.237141][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.238002][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.238893][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.240980][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.242007][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.243630][ T4956] Call trace: [ 80.244103][ T4956] dump_backtrace+0x0/0x458 [ 80.244827][ T4956] show_stack+0x2c/0x3c [ 80.245551][ T4956] __dump_stack+0x30/0x40 [ 80.246248][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.246972][ T4956] dump_stack+0x1c/0x5c [ 80.247615][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.248534][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.249350][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.250135][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.250875][ T4956] inet_sendmsg+0x154/0x284 [ 80.251596][ T4956] __sys_sendto+0x30c/0x420 [ 80.252330][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.253048][ T4956] invoke_syscall+0x98/0x2b0 [ 80.253788][ T4956] el0_svc_common+0x138/0x258 [ 80.254507][ T4956] do_el0_svc+0x58/0x13c [ 80.255119][ T4956] el0_svc+0x78/0x1d0 [ 80.255748][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.256463][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.257403][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.258977][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.259987][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.261385][ T4956] Call trace: [ 80.261864][ T4956] dump_backtrace+0x0/0x458 [ 80.262530][ T4956] show_stack+0x2c/0x3c [ 80.263140][ T4956] __dump_stack+0x30/0x40 [ 80.263838][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.264618][ T4956] dump_stack+0x1c/0x5c [ 80.265272][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.266087][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.266789][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.267606][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.268316][ T4956] inet_sendmsg+0x154/0x284 [ 80.269001][ T4956] __sys_sendto+0x30c/0x420 [ 80.269690][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.270485][ T4956] invoke_syscall+0x98/0x2b0 [ 80.271190][ T4956] el0_svc_common+0x138/0x258 [ 80.271949][ T4956] do_el0_svc+0x58/0x13c [ 80.272666][ T4956] el0_svc+0x78/0x1d0 [ 80.273306][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.274095][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.274996][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.276682][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.277882][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.279486][ T4956] Call trace: [ 80.279978][ T4956] dump_backtrace+0x0/0x458 [ 80.280718][ T4956] show_stack+0x2c/0x3c [ 80.281368][ T4956] __dump_stack+0x30/0x40 [ 80.282058][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.282814][ T4956] dump_stack+0x1c/0x5c [ 80.283485][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.284350][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.285151][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.285957][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.286722][ T4956] inet_sendmsg+0x154/0x284 [ 80.287490][ T4956] __sys_sendto+0x30c/0x420 [ 80.288262][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.289101][ T4956] invoke_syscall+0x98/0x2b0 [ 80.289855][ T4956] el0_svc_common+0x138/0x258 [ 80.290612][ T4956] do_el0_svc+0x58/0x13c [ 80.291314][ T4956] el0_svc+0x78/0x1d0 [ 80.291942][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.292801][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.294101][ T4956] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.295763][ T4956] CPU: 0 PID: 4956 Comm: syz.0.24 Not tainted syzkaller #0 [ 80.296796][ T4956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.298280][ T4956] Call trace: [ 80.298796][ T4956] dump_backtrace+0x0/0x458 [ 80.299519][ T4956] show_stack+0x2c/0x3c [ 80.300180][ T4956] __dump_stack+0x30/0x40 [ 80.300848][ T4956] dump_stack_lvl+0xf4/0x15c [ 80.301593][ T4956] dump_stack+0x1c/0x5c [ 80.302291][ T4956] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.303222][ T4956] dccp_xmit_packet+0x298/0x448 [ 80.303998][ T4956] dccp_write_xmit+0x118/0x1d0 [ 80.304820][ T4956] dccp_sendmsg+0x550/0x8b8 [ 80.305569][ T4956] inet_sendmsg+0x154/0x284 [ 80.306303][ T4956] __sys_sendto+0x30c/0x420 [ 80.307023][ T4956] __arm64_sys_sendto+0xd8/0xf8 [ 80.307805][ T4956] invoke_syscall+0x98/0x2b0 [ 80.308535][ T4956] el0_svc_common+0x138/0x258 [ 80.309276][ T4956] do_el0_svc+0x58/0x13c [ 80.309999][ T4956] el0_svc+0x78/0x1d0 [ 80.310613][ T4956] el0t_64_sync_handler+0xcc/0xe4 [ 80.311453][ T4956] el0t_64_sync+0x1a0/0x1a4 [ 80.324011][ T4958] dccp_xmit_packet: Payload too large (65475) for featneg. [ 80.331165][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.334269][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.335446][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.337007][ T4958] Call trace: [ 80.337563][ T4958] dump_backtrace+0x0/0x458 [ 80.338308][ T4958] show_stack+0x2c/0x3c [ 80.338962][ T4958] __dump_stack+0x30/0x40 [ 80.339705][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.340390][ T4958] dump_stack+0x1c/0x5c [ 80.341023][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.341884][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.342649][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.343386][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.344087][ T4958] inet_sendmsg+0x154/0x284 [ 80.344796][ T4958] __sys_sendto+0x30c/0x420 [ 80.345508][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.346273][ T4958] invoke_syscall+0x98/0x2b0 [ 80.346991][ T4958] el0_svc_common+0x138/0x258 [ 80.347720][ T4958] do_el0_svc+0x58/0x13c [ 80.348385][ T4958] el0_svc+0x78/0x1d0 [ 80.349008][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.349762][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.351186][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.353023][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.354093][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.355626][ T4958] Call trace: [ 80.356176][ T4958] dump_backtrace+0x0/0x458 [ 80.356870][ T4958] show_stack+0x2c/0x3c [ 80.357500][ T4958] __dump_stack+0x30/0x40 [ 80.358149][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.358848][ T4958] dump_stack+0x1c/0x5c [ 80.359479][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.360313][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.361046][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.361761][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.362457][ T4958] inet_sendmsg+0x154/0x284 [ 80.363209][ T4958] __sys_sendto+0x30c/0x420 [ 80.363954][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.364740][ T4958] invoke_syscall+0x98/0x2b0 [ 80.365459][ T4958] el0_svc_common+0x138/0x258 [ 80.366215][ T4958] do_el0_svc+0x58/0x13c [ 80.366943][ T4958] el0_svc+0x78/0x1d0 [ 80.367592][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.368454][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.369348][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.371121][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.372186][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.373688][ T4958] Call trace: [ 80.374161][ T4958] dump_backtrace+0x0/0x458 [ 80.374800][ T4958] show_stack+0x2c/0x3c [ 80.375412][ T4958] __dump_stack+0x30/0x40 [ 80.376031][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.376840][ T4958] dump_stack+0x1c/0x5c [ 80.377480][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.378379][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.379183][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.379942][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.380631][ T4958] inet_sendmsg+0x154/0x284 [ 80.381357][ T4958] __sys_sendto+0x30c/0x420 [ 80.382063][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.382833][ T4958] invoke_syscall+0x98/0x2b0 [ 80.383597][ T4958] el0_svc_common+0x138/0x258 [ 80.384347][ T4958] do_el0_svc+0x58/0x13c [ 80.385037][ T4958] el0_svc+0x78/0x1d0 [ 80.385676][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.386466][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.387541][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.389228][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.390401][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.391948][ T4958] Call trace: [ 80.392466][ T4958] dump_backtrace+0x0/0x458 [ 80.393149][ T4958] show_stack+0x2c/0x3c [ 80.393812][ T4958] __dump_stack+0x30/0x40 [ 80.394438][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.395189][ T4958] dump_stack+0x1c/0x5c [ 80.395829][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.396689][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.397502][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.398260][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.398969][ T4958] inet_sendmsg+0x154/0x284 [ 80.399703][ T4958] __sys_sendto+0x30c/0x420 [ 80.400449][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.401274][ T4958] invoke_syscall+0x98/0x2b0 [ 80.402031][ T4958] el0_svc_common+0x138/0x258 [ 80.402895][ T4958] do_el0_svc+0x58/0x13c [ 80.403661][ T4958] el0_svc+0x78/0x1d0 [ 80.404388][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.405208][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.406445][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.408156][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.409300][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.410583][ T4958] Call trace: [ 80.411036][ T4958] dump_backtrace+0x0/0x458 [ 80.411675][ T4958] show_stack+0x2c/0x3c [ 80.412275][ T4958] __dump_stack+0x30/0x40 [ 80.412929][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.413711][ T4958] dump_stack+0x1c/0x5c [ 80.414372][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.415213][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.416025][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.416760][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.417450][ T4958] inet_sendmsg+0x154/0x284 [ 80.418157][ T4958] __sys_sendto+0x30c/0x420 [ 80.418837][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.419562][ T4958] invoke_syscall+0x98/0x2b0 [ 80.420283][ T4958] el0_svc_common+0x138/0x258 [ 80.421059][ T4958] do_el0_svc+0x58/0x13c [ 80.421771][ T4958] el0_svc+0x78/0x1d0 [ 80.422393][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.423148][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.424117][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.425864][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.426925][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.428537][ T4958] Call trace: [ 80.429034][ T4958] dump_backtrace+0x0/0x458 [ 80.429698][ T4958] show_stack+0x2c/0x3c [ 80.430288][ T4958] __dump_stack+0x30/0x40 [ 80.430917][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.431603][ T4958] dump_stack+0x1c/0x5c [ 80.432277][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.433162][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.433963][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.434739][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.435463][ T4958] inet_sendmsg+0x154/0x284 [ 80.436199][ T4958] __sys_sendto+0x30c/0x420 [ 80.436978][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.437841][ T4958] invoke_syscall+0x98/0x2b0 [ 80.438567][ T4958] el0_svc_common+0x138/0x258 [ 80.439300][ T4958] do_el0_svc+0x58/0x13c [ 80.439972][ T4958] el0_svc+0x78/0x1d0 [ 80.440604][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.441399][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.442300][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.443893][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.445071][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.446710][ T4958] Call trace: [ 80.447299][ T4958] dump_backtrace+0x0/0x458 [ 80.448022][ T4958] show_stack+0x2c/0x3c [ 80.448678][ T4958] __dump_stack+0x30/0x40 [ 80.449365][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.450086][ T4958] dump_stack+0x1c/0x5c [ 80.450734][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.451607][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.452407][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.453208][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.453928][ T4958] inet_sendmsg+0x154/0x284 [ 80.454646][ T4958] __sys_sendto+0x30c/0x420 [ 80.455359][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.456107][ T4958] invoke_syscall+0x98/0x2b0 [ 80.456797][ T4958] el0_svc_common+0x138/0x258 [ 80.457501][ T4958] do_el0_svc+0x58/0x13c [ 80.458225][ T4958] el0_svc+0x78/0x1d0 [ 80.458869][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.459666][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.460692][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.462470][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.463601][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.465003][ T4958] Call trace: [ 80.465450][ T4958] dump_backtrace+0x0/0x458 [ 80.466076][ T4958] show_stack+0x2c/0x3c [ 80.466689][ T4958] __dump_stack+0x30/0x40 [ 80.467294][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.467957][ T4958] dump_stack+0x1c/0x5c [ 80.468559][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.469458][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.470226][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.470965][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.471695][ T4958] inet_sendmsg+0x154/0x284 [ 80.472445][ T4958] __sys_sendto+0x30c/0x420 [ 80.473168][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.473998][ T4958] invoke_syscall+0x98/0x2b0 [ 80.474740][ T4958] el0_svc_common+0x138/0x258 [ 80.475509][ T4958] do_el0_svc+0x58/0x13c [ 80.476199][ T4958] el0_svc+0x78/0x1d0 [ 80.476802][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.477648][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.478793][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.480581][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.481689][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.483372][ T4958] Call trace: [ 80.483911][ T4958] dump_backtrace+0x0/0x458 [ 80.484619][ T4958] show_stack+0x2c/0x3c [ 80.485299][ T4958] __dump_stack+0x30/0x40 [ 80.486010][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.486704][ T4958] dump_stack+0x1c/0x5c [ 80.487346][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.488279][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.488966][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.489651][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.490326][ T4958] inet_sendmsg+0x154/0x284 [ 80.490995][ T4958] __sys_sendto+0x30c/0x420 [ 80.491628][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.492370][ T4958] invoke_syscall+0x98/0x2b0 [ 80.493043][ T4958] el0_svc_common+0x138/0x258 [ 80.493766][ T4958] do_el0_svc+0x58/0x13c [ 80.494497][ T4958] el0_svc+0x78/0x1d0 [ 80.495142][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.495953][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.496896][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.498405][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.499391][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.500747][ T4958] Call trace: [ 80.501200][ T4958] dump_backtrace+0x0/0x458 [ 80.501808][ T4958] show_stack+0x2c/0x3c [ 80.502488][ T4958] __dump_stack+0x30/0x40 [ 80.503188][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.503888][ T4958] dump_stack+0x1c/0x5c [ 80.504511][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.505468][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.506256][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.506991][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.507713][ T4958] inet_sendmsg+0x154/0x284 [ 80.508437][ T4958] __sys_sendto+0x30c/0x420 [ 80.509191][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.509988][ T4958] invoke_syscall+0x98/0x2b0 [ 80.510720][ T4958] el0_svc_common+0x138/0x258 [ 80.511461][ T4958] do_el0_svc+0x58/0x13c [ 80.512138][ T4958] el0_svc+0x78/0x1d0 [ 80.512734][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.513509][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.514881][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.516853][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.517997][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.519786][ T4958] Call trace: [ 80.520278][ T4958] dump_backtrace+0x0/0x458 [ 80.520952][ T4958] show_stack+0x2c/0x3c [ 80.521566][ T4958] __dump_stack+0x30/0x40 [ 80.522184][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.522919][ T4958] dump_stack+0x1c/0x5c [ 80.523544][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.524353][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.525101][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.525859][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.526596][ T4958] inet_sendmsg+0x154/0x284 [ 80.527333][ T4958] __sys_sendto+0x30c/0x420 [ 80.528046][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.528872][ T4958] invoke_syscall+0x98/0x2b0 [ 80.529657][ T4958] el0_svc_common+0x138/0x258 [ 80.530417][ T4958] do_el0_svc+0x58/0x13c [ 80.531089][ T4958] el0_svc+0x78/0x1d0 [ 80.531716][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.532514][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.533399][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.535053][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.536193][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.537784][ T4958] Call trace: [ 80.538266][ T4958] dump_backtrace+0x0/0x458 [ 80.538867][ T4958] show_stack+0x2c/0x3c [ 80.539489][ T4958] __dump_stack+0x30/0x40 [ 80.540179][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.540785][ T4958] dump_stack+0x1c/0x5c [ 80.541358][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.542130][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.542885][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.543642][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.544366][ T4958] inet_sendmsg+0x154/0x284 [ 80.545131][ T4958] __sys_sendto+0x30c/0x420 [ 80.545897][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.546683][ T4958] invoke_syscall+0x98/0x2b0 [ 80.547431][ T4958] el0_svc_common+0x138/0x258 [ 80.548201][ T4958] do_el0_svc+0x58/0x13c [ 80.548884][ T4958] el0_svc+0x78/0x1d0 [ 80.549528][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.550336][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.551297][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.553187][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.554308][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.555868][ T4958] Call trace: [ 80.556367][ T4958] dump_backtrace+0x0/0x458 [ 80.557095][ T4958] show_stack+0x2c/0x3c [ 80.557764][ T4958] __dump_stack+0x30/0x40 [ 80.558459][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.559182][ T4958] dump_stack+0x1c/0x5c [ 80.559829][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.560670][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.561408][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.562160][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.562928][ T4958] inet_sendmsg+0x154/0x284 [ 80.563725][ T4958] __sys_sendto+0x30c/0x420 [ 80.564511][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.565332][ T4958] invoke_syscall+0x98/0x2b0 [ 80.566114][ T4958] el0_svc_common+0x138/0x258 [ 80.566881][ T4958] do_el0_svc+0x58/0x13c [ 80.567602][ T4958] el0_svc+0x78/0x1d0 [ 80.568243][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.569030][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.570352][ T4958] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.572121][ T4958] CPU: 1 PID: 4958 Comm: syz.0.25 Not tainted syzkaller #0 [ 80.573245][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.574762][ T4958] Call trace: [ 80.575228][ T4958] dump_backtrace+0x0/0x458 [ 80.575907][ T4958] show_stack+0x2c/0x3c [ 80.576562][ T4958] __dump_stack+0x30/0x40 [ 80.577203][ T4958] dump_stack_lvl+0xf4/0x15c [ 80.577972][ T4958] dump_stack+0x1c/0x5c [ 80.578655][ T4958] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.579493][ T4958] dccp_xmit_packet+0x298/0x448 [ 80.580282][ T4958] dccp_write_xmit+0x118/0x1d0 [ 80.581086][ T4958] dccp_sendmsg+0x550/0x8b8 [ 80.581788][ T4958] inet_sendmsg+0x154/0x284 [ 80.582587][ T4958] __sys_sendto+0x30c/0x420 [ 80.583325][ T4958] __arm64_sys_sendto+0xd8/0xf8 [ 80.584117][ T4958] invoke_syscall+0x98/0x2b0 [ 80.584833][ T4958] el0_svc_common+0x138/0x258 [ 80.585550][ T4958] do_el0_svc+0x58/0x13c [ 80.586118][ T4958] el0_svc+0x78/0x1d0 [ 80.586681][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 80.587407][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 80.605540][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.607449][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.608565][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.610152][ T4960] Call trace: [ 80.610629][ T4960] dump_backtrace+0x0/0x458 [ 80.611421][ T4960] show_stack+0x2c/0x3c [ 80.612077][ T4960] __dump_stack+0x30/0x40 [ 80.612743][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.613471][ T4960] dump_stack+0x1c/0x5c [ 80.614126][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.615015][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.615753][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.616488][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.617292][ T4960] inet_sendmsg+0x154/0x284 [ 80.618042][ T4960] __sys_sendto+0x30c/0x420 [ 80.618786][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.619585][ T4960] invoke_syscall+0x98/0x2b0 [ 80.620322][ T4960] el0_svc_common+0x138/0x258 [ 80.621059][ T4960] do_el0_svc+0x58/0x13c [ 80.621720][ T4960] el0_svc+0x78/0x1d0 [ 80.622379][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.623197][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.625451][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.627089][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.628128][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.629570][ T4960] Call trace: [ 80.630031][ T4960] dump_backtrace+0x0/0x458 [ 80.630656][ T4960] show_stack+0x2c/0x3c [ 80.631276][ T4960] __dump_stack+0x30/0x40 [ 80.631900][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.632581][ T4960] dump_stack+0x1c/0x5c [ 80.633292][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.634153][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.634914][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.635645][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.636337][ T4960] inet_sendmsg+0x154/0x284 [ 80.637010][ T4960] __sys_sendto+0x30c/0x420 [ 80.637723][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.638521][ T4960] invoke_syscall+0x98/0x2b0 [ 80.639273][ T4960] el0_svc_common+0x138/0x258 [ 80.640009][ T4960] do_el0_svc+0x58/0x13c [ 80.640683][ T4960] el0_svc+0x78/0x1d0 [ 80.641290][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.642067][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.642992][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.644738][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.645829][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.647387][ T4960] Call trace: [ 80.647901][ T4960] dump_backtrace+0x0/0x458 [ 80.648624][ T4960] show_stack+0x2c/0x3c [ 80.649309][ T4960] __dump_stack+0x30/0x40 [ 80.650058][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.650814][ T4960] dump_stack+0x1c/0x5c [ 80.651511][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.652358][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.653121][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.653886][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.654617][ T4960] inet_sendmsg+0x154/0x284 [ 80.655367][ T4960] __sys_sendto+0x30c/0x420 [ 80.656088][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.656863][ T4960] invoke_syscall+0x98/0x2b0 [ 80.657627][ T4960] el0_svc_common+0x138/0x258 [ 80.658390][ T4960] do_el0_svc+0x58/0x13c [ 80.659053][ T4960] el0_svc+0x78/0x1d0 [ 80.659698][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.660581][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.662184][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.663846][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.664938][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.666375][ T4960] Call trace: [ 80.666880][ T4960] dump_backtrace+0x0/0x458 [ 80.667642][ T4960] show_stack+0x2c/0x3c [ 80.668310][ T4960] __dump_stack+0x30/0x40 [ 80.669007][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.669755][ T4960] dump_stack+0x1c/0x5c [ 80.670392][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.671241][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.671999][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.672811][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.673533][ T4960] inet_sendmsg+0x154/0x284 [ 80.674256][ T4960] __sys_sendto+0x30c/0x420 [ 80.674945][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.675755][ T4960] invoke_syscall+0x98/0x2b0 [ 80.676527][ T4960] el0_svc_common+0x138/0x258 [ 80.677318][ T4960] do_el0_svc+0x58/0x13c [ 80.677967][ T4960] el0_svc+0x78/0x1d0 [ 80.678547][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.679395][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.680335][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.682160][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.683201][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.684754][ T4960] Call trace: [ 80.685242][ T4960] dump_backtrace+0x0/0x458 [ 80.685890][ T4960] show_stack+0x2c/0x3c [ 80.686567][ T4960] __dump_stack+0x30/0x40 [ 80.687300][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.688066][ T4960] dump_stack+0x1c/0x5c [ 80.688712][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.689589][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.690387][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.691158][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.691889][ T4960] inet_sendmsg+0x154/0x284 [ 80.692567][ T4960] __sys_sendto+0x30c/0x420 [ 80.693336][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.694171][ T4960] invoke_syscall+0x98/0x2b0 [ 80.694943][ T4960] el0_svc_common+0x138/0x258 [ 80.695723][ T4960] do_el0_svc+0x58/0x13c [ 80.696424][ T4960] el0_svc+0x78/0x1d0 [ 80.697058][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.697926][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.698866][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.700667][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.701859][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.703545][ T4960] Call trace: [ 80.704101][ T4960] dump_backtrace+0x0/0x458 [ 80.704804][ T4960] show_stack+0x2c/0x3c [ 80.705470][ T4960] __dump_stack+0x30/0x40 [ 80.706163][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.706934][ T4960] dump_stack+0x1c/0x5c [ 80.707649][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.708612][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.709434][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.710228][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.710958][ T4960] inet_sendmsg+0x154/0x284 [ 80.711686][ T4960] __sys_sendto+0x30c/0x420 [ 80.712451][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.713256][ T4960] invoke_syscall+0x98/0x2b0 [ 80.714020][ T4960] el0_svc_common+0x138/0x258 [ 80.714790][ T4960] do_el0_svc+0x58/0x13c [ 80.715434][ T4960] el0_svc+0x78/0x1d0 [ 80.715972][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.716653][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.718175][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.720046][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.721172][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.722751][ T4960] Call trace: [ 80.723308][ T4960] dump_backtrace+0x0/0x458 [ 80.724026][ T4960] show_stack+0x2c/0x3c [ 80.724686][ T4960] __dump_stack+0x30/0x40 [ 80.725407][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.726150][ T4960] dump_stack+0x1c/0x5c [ 80.726842][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.727804][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.728586][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.729368][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.730073][ T4960] inet_sendmsg+0x154/0x284 [ 80.730779][ T4960] __sys_sendto+0x30c/0x420 [ 80.731525][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.732304][ T4960] invoke_syscall+0x98/0x2b0 [ 80.733102][ T4960] el0_svc_common+0x138/0x258 [ 80.733798][ T4960] do_el0_svc+0x58/0x13c [ 80.734473][ T4960] el0_svc+0x78/0x1d0 [ 80.735090][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.735955][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.737160][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.738795][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.739932][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.741467][ T4960] Call trace: [ 80.741966][ T4960] dump_backtrace+0x0/0x458 [ 80.742682][ T4960] show_stack+0x2c/0x3c [ 80.743322][ T4960] __dump_stack+0x30/0x40 [ 80.743946][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.744647][ T4960] dump_stack+0x1c/0x5c [ 80.745316][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.746158][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.746917][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.747653][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.748328][ T4960] inet_sendmsg+0x154/0x284 [ 80.749030][ T4960] __sys_sendto+0x30c/0x420 [ 80.749720][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.750469][ T4960] invoke_syscall+0x98/0x2b0 [ 80.751181][ T4960] el0_svc_common+0x138/0x258 [ 80.751907][ T4960] do_el0_svc+0x58/0x13c [ 80.752610][ T4960] el0_svc+0x78/0x1d0 [ 80.753268][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.754013][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.755008][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.756651][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.757708][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.759157][ T4960] Call trace: [ 80.759627][ T4960] dump_backtrace+0x0/0x458 [ 80.760409][ T4960] show_stack+0x2c/0x3c [ 80.761103][ T4960] __dump_stack+0x30/0x40 [ 80.761766][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.762549][ T4960] dump_stack+0x1c/0x5c [ 80.763188][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.764089][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.764869][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.765636][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.766358][ T4960] inet_sendmsg+0x154/0x284 [ 80.767095][ T4960] __sys_sendto+0x30c/0x420 [ 80.767809][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.768530][ T4960] invoke_syscall+0x98/0x2b0 [ 80.769222][ T4960] el0_svc_common+0x138/0x258 [ 80.769946][ T4960] do_el0_svc+0x58/0x13c [ 80.770666][ T4960] el0_svc+0x78/0x1d0 [ 80.771278][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.772107][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.773082][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.774751][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.775832][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.777257][ T4960] Call trace: [ 80.777766][ T4960] dump_backtrace+0x0/0x458 [ 80.778476][ T4960] show_stack+0x2c/0x3c [ 80.779135][ T4960] __dump_stack+0x30/0x40 [ 80.779823][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.780539][ T4960] dump_stack+0x1c/0x5c [ 80.781201][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.782055][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.782856][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.783623][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.784319][ T4960] inet_sendmsg+0x154/0x284 [ 80.785064][ T4960] __sys_sendto+0x30c/0x420 [ 80.785783][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.786540][ T4960] invoke_syscall+0x98/0x2b0 [ 80.787264][ T4960] el0_svc_common+0x138/0x258 [ 80.788017][ T4960] do_el0_svc+0x58/0x13c [ 80.788753][ T4960] el0_svc+0x78/0x1d0 [ 80.789401][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.790183][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.791115][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.792983][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.794041][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.795556][ T4960] Call trace: [ 80.796085][ T4960] dump_backtrace+0x0/0x458 [ 80.796832][ T4960] show_stack+0x2c/0x3c [ 80.797503][ T4960] __dump_stack+0x30/0x40 [ 80.798180][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.798870][ T4960] dump_stack+0x1c/0x5c [ 80.799512][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.800392][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.801195][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.801932][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.802696][ T4960] inet_sendmsg+0x154/0x284 [ 80.803399][ T4960] __sys_sendto+0x30c/0x420 [ 80.804126][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.804909][ T4960] invoke_syscall+0x98/0x2b0 [ 80.805631][ T4960] el0_svc_common+0x138/0x258 [ 80.806385][ T4960] do_el0_svc+0x58/0x13c [ 80.807064][ T4960] el0_svc+0x78/0x1d0 [ 80.807705][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.808554][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.809459][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.810999][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.812046][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.813688][ T4960] Call trace: [ 80.814170][ T4960] dump_backtrace+0x0/0x458 [ 80.814833][ T4960] show_stack+0x2c/0x3c [ 80.815465][ T4960] __dump_stack+0x30/0x40 [ 80.816160][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.816824][ T4960] dump_stack+0x1c/0x5c [ 80.817459][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.818211][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.818891][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.819653][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.820383][ T4960] inet_sendmsg+0x154/0x284 [ 80.821125][ T4960] __sys_sendto+0x30c/0x420 [ 80.821839][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.822630][ T4960] invoke_syscall+0x98/0x2b0 [ 80.823409][ T4960] el0_svc_common+0x138/0x258 [ 80.824159][ T4960] do_el0_svc+0x58/0x13c [ 80.824855][ T4960] el0_svc+0x78/0x1d0 [ 80.825496][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.826288][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.827617][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.829398][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.830550][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.832129][ T4960] Call trace: [ 80.832664][ T4960] dump_backtrace+0x0/0x458 [ 80.833403][ T4960] show_stack+0x2c/0x3c [ 80.834066][ T4960] __dump_stack+0x30/0x40 [ 80.834746][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.835488][ T4960] dump_stack+0x1c/0x5c [ 80.836188][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.837060][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.837889][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.838696][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.839437][ T4960] inet_sendmsg+0x154/0x284 [ 80.840187][ T4960] __sys_sendto+0x30c/0x420 [ 80.840925][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.841716][ T4960] invoke_syscall+0x98/0x2b0 [ 80.842456][ T4960] el0_svc_common+0x138/0x258 [ 80.843225][ T4960] do_el0_svc+0x58/0x13c [ 80.843860][ T4960] el0_svc+0x78/0x1d0 [ 80.844515][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.845325][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.846583][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.848391][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.849564][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.851211][ T4960] Call trace: [ 80.851738][ T4960] dump_backtrace+0x0/0x458 [ 80.852452][ T4960] show_stack+0x2c/0x3c [ 80.853142][ T4960] __dump_stack+0x30/0x40 [ 80.853788][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.854617][ T4960] dump_stack+0x1c/0x5c [ 80.855255][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.856211][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.856973][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.857772][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.858482][ T4960] inet_sendmsg+0x154/0x284 [ 80.859240][ T4960] __sys_sendto+0x30c/0x420 [ 80.859983][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.860766][ T4960] invoke_syscall+0x98/0x2b0 [ 80.861502][ T4960] el0_svc_common+0x138/0x258 [ 80.862262][ T4960] do_el0_svc+0x58/0x13c [ 80.862969][ T4960] el0_svc+0x78/0x1d0 [ 80.863668][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.864502][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.865493][ T4960] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.867182][ T4960] CPU: 0 PID: 4960 Comm: syz.0.26 Not tainted syzkaller #0 [ 80.868233][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.869738][ T4960] Call trace: [ 80.870219][ T4960] dump_backtrace+0x0/0x458 [ 80.870912][ T4960] show_stack+0x2c/0x3c [ 80.871488][ T4960] __dump_stack+0x30/0x40 [ 80.872121][ T4960] dump_stack_lvl+0xf4/0x15c [ 80.872910][ T4960] dump_stack+0x1c/0x5c [ 80.873587][ T4960] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.874495][ T4960] dccp_xmit_packet+0x298/0x448 [ 80.875303][ T4960] dccp_write_xmit+0x118/0x1d0 [ 80.876097][ T4960] dccp_sendmsg+0x550/0x8b8 [ 80.876839][ T4960] inet_sendmsg+0x154/0x284 [ 80.877610][ T4960] __sys_sendto+0x30c/0x420 [ 80.878386][ T4960] __arm64_sys_sendto+0xd8/0xf8 [ 80.879190][ T4960] invoke_syscall+0x98/0x2b0 [ 80.879932][ T4960] el0_svc_common+0x138/0x258 [ 80.880713][ T4960] do_el0_svc+0x58/0x13c [ 80.881415][ T4960] el0_svc+0x78/0x1d0 [ 80.882038][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 80.882808][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 80.902795][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.904566][ T4962] CPU: 1 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 80.905650][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.907239][ T4962] Call trace: [ 80.907781][ T4962] dump_backtrace+0x0/0x458 [ 80.908469][ T4962] show_stack+0x2c/0x3c [ 80.909100][ T4962] __dump_stack+0x30/0x40 [ 80.909765][ T4962] dump_stack_lvl+0xf4/0x15c [ 80.910475][ T4962] dump_stack+0x1c/0x5c [ 80.911156][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.912078][ T4962] dccp_xmit_packet+0x298/0x448 [ 80.912845][ T4962] dccp_write_xmit+0x118/0x1d0 [ 80.913611][ T4962] dccp_sendmsg+0x550/0x8b8 [ 80.914306][ T4962] inet_sendmsg+0x154/0x284 [ 80.915006][ T4962] __sys_sendto+0x30c/0x420 [ 80.915704][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 80.916454][ T4962] invoke_syscall+0x98/0x2b0 [ 80.917164][ T4962] el0_svc_common+0x138/0x258 [ 80.917915][ T4962] do_el0_svc+0x58/0x13c [ 80.918587][ T4962] el0_svc+0x78/0x1d0 [ 80.919202][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 80.920022][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 80.921609][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.924020][ T4962] CPU: 1 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 80.925090][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.926529][ T4962] Call trace: [ 80.927036][ T4962] dump_backtrace+0x0/0x458 [ 80.927724][ T4962] show_stack+0x2c/0x3c [ 80.928394][ T4962] __dump_stack+0x30/0x40 [ 80.929072][ T4962] dump_stack_lvl+0xf4/0x15c [ 80.929785][ T4962] dump_stack+0x1c/0x5c [ 80.930437][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.931216][ T4962] dccp_xmit_packet+0x298/0x448 [ 80.931927][ T4962] dccp_write_xmit+0x118/0x1d0 [ 80.932668][ T4962] dccp_sendmsg+0x550/0x8b8 [ 80.933346][ T4962] inet_sendmsg+0x154/0x284 [ 80.934035][ T4962] __sys_sendto+0x30c/0x420 [ 80.934699][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 80.935535][ T4962] invoke_syscall+0x98/0x2b0 [ 80.936270][ T4962] el0_svc_common+0x138/0x258 [ 80.936942][ T4962] do_el0_svc+0x58/0x13c [ 80.937658][ T4962] el0_svc+0x78/0x1d0 [ 80.938331][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 80.939176][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 80.941147][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.942986][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 80.943992][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.945544][ T4962] Call trace: [ 80.946081][ T4962] dump_backtrace+0x0/0x458 [ 80.946852][ T4962] show_stack+0x2c/0x3c [ 80.947493][ T4962] __dump_stack+0x30/0x40 [ 80.948181][ T4962] dump_stack_lvl+0xf4/0x15c [ 80.948859][ T4962] dump_stack+0x1c/0x5c [ 80.949539][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.950337][ T4962] dccp_xmit_packet+0x298/0x448 [ 80.951059][ T4962] dccp_write_xmit+0x118/0x1d0 [ 80.951704][ T4962] dccp_sendmsg+0x550/0x8b8 [ 80.952367][ T4962] inet_sendmsg+0x154/0x284 [ 80.952993][ T4962] __sys_sendto+0x30c/0x420 [ 80.953676][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 80.954436][ T4962] invoke_syscall+0x98/0x2b0 [ 80.955102][ T4962] el0_svc_common+0x138/0x258 [ 80.955758][ T4962] do_el0_svc+0x58/0x13c [ 80.956412][ T4962] el0_svc+0x78/0x1d0 [ 80.957014][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 80.957695][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 80.959657][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.961656][ T4962] CPU: 1 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 80.962850][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.964514][ T4962] Call trace: [ 80.965049][ T4962] dump_backtrace+0x0/0x458 [ 80.965812][ T4962] show_stack+0x2c/0x3c [ 80.966466][ T4962] __dump_stack+0x30/0x40 [ 80.967192][ T4962] dump_stack_lvl+0xf4/0x15c [ 80.967963][ T4962] dump_stack+0x1c/0x5c [ 80.968628][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.969519][ T4962] dccp_xmit_packet+0x298/0x448 [ 80.970245][ T4962] dccp_write_xmit+0x118/0x1d0 [ 80.971045][ T4962] dccp_sendmsg+0x550/0x8b8 [ 80.971811][ T4962] inet_sendmsg+0x154/0x284 [ 80.972595][ T4962] __sys_sendto+0x30c/0x420 [ 80.973366][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 80.974104][ T4962] invoke_syscall+0x98/0x2b0 [ 80.974852][ T4962] el0_svc_common+0x138/0x258 [ 80.975571][ T4962] do_el0_svc+0x58/0x13c [ 80.976227][ T4962] el0_svc+0x78/0x1d0 [ 80.976868][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 80.977588][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 80.979548][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.981224][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 80.982341][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.984026][ T4962] Call trace: [ 80.984538][ T4962] dump_backtrace+0x0/0x458 [ 80.985263][ T4962] show_stack+0x2c/0x3c [ 80.985924][ T4962] __dump_stack+0x30/0x40 [ 80.986594][ T4962] dump_stack_lvl+0xf4/0x15c [ 80.987302][ T4962] dump_stack+0x1c/0x5c [ 80.987985][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 80.988840][ T4962] dccp_xmit_packet+0x298/0x448 [ 80.989609][ T4962] dccp_write_xmit+0x118/0x1d0 [ 80.990348][ T4962] dccp_sendmsg+0x550/0x8b8 [ 80.991060][ T4962] inet_sendmsg+0x154/0x284 [ 80.991767][ T4962] __sys_sendto+0x30c/0x420 [ 80.992472][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 80.993203][ T4962] invoke_syscall+0x98/0x2b0 [ 80.993967][ T4962] el0_svc_common+0x138/0x258 [ 80.994703][ T4962] do_el0_svc+0x58/0x13c [ 80.995374][ T4962] el0_svc+0x78/0x1d0 [ 80.996023][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 80.996824][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 80.997867][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 80.999510][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.000538][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.002034][ T4962] Call trace: [ 81.002540][ T4962] dump_backtrace+0x0/0x458 [ 81.003236][ T4962] show_stack+0x2c/0x3c [ 81.003955][ T4962] __dump_stack+0x30/0x40 [ 81.004708][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.005451][ T4962] dump_stack+0x1c/0x5c [ 81.006155][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.007024][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.007789][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.008559][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.009264][ T4962] inet_sendmsg+0x154/0x284 [ 81.009983][ T4962] __sys_sendto+0x30c/0x420 [ 81.010738][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.011565][ T4962] invoke_syscall+0x98/0x2b0 [ 81.012261][ T4962] el0_svc_common+0x138/0x258 [ 81.013024][ T4962] do_el0_svc+0x58/0x13c [ 81.013739][ T4962] el0_svc+0x78/0x1d0 [ 81.014348][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.015182][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.016087][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.017923][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.019065][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.020582][ T4962] Call trace: [ 81.021137][ T4962] dump_backtrace+0x0/0x458 [ 81.021853][ T4962] show_stack+0x2c/0x3c [ 81.022495][ T4962] __dump_stack+0x30/0x40 [ 81.023222][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.023902][ T4962] dump_stack+0x1c/0x5c [ 81.024603][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.025545][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.026378][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.027201][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.027903][ T4962] inet_sendmsg+0x154/0x284 [ 81.028683][ T4962] __sys_sendto+0x30c/0x420 [ 81.029390][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.030158][ T4962] invoke_syscall+0x98/0x2b0 [ 81.030894][ T4962] el0_svc_common+0x138/0x258 [ 81.031629][ T4962] do_el0_svc+0x58/0x13c [ 81.032301][ T4962] el0_svc+0x78/0x1d0 [ 81.032879][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.033725][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.034783][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.036535][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.037619][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.039281][ T4962] Call trace: [ 81.039815][ T4962] dump_backtrace+0x0/0x458 [ 81.040541][ T4962] show_stack+0x2c/0x3c [ 81.041169][ T4962] __dump_stack+0x30/0x40 [ 81.041787][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.042522][ T4962] dump_stack+0x1c/0x5c [ 81.043229][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.044088][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.044865][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.045664][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.046359][ T4962] inet_sendmsg+0x154/0x284 [ 81.047116][ T4962] __sys_sendto+0x30c/0x420 [ 81.047835][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.048565][ T4962] invoke_syscall+0x98/0x2b0 [ 81.049338][ T4962] el0_svc_common+0x138/0x258 [ 81.050041][ T4962] do_el0_svc+0x58/0x13c [ 81.050761][ T4962] el0_svc+0x78/0x1d0 [ 81.051417][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.052238][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.053902][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.055638][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.056778][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.058260][ T4962] Call trace: [ 81.058754][ T4962] dump_backtrace+0x0/0x458 [ 81.059455][ T4962] show_stack+0x2c/0x3c [ 81.060061][ T4962] __dump_stack+0x30/0x40 [ 81.060702][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.061426][ T4962] dump_stack+0x1c/0x5c [ 81.062073][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.062927][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.063711][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.064473][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.065248][ T4962] inet_sendmsg+0x154/0x284 [ 81.065986][ T4962] __sys_sendto+0x30c/0x420 [ 81.066690][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.067439][ T4962] invoke_syscall+0x98/0x2b0 [ 81.068231][ T4962] el0_svc_common+0x138/0x258 [ 81.068973][ T4962] do_el0_svc+0x58/0x13c [ 81.069705][ T4962] el0_svc+0x78/0x1d0 [ 81.070411][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.071279][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.072985][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.074822][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.075917][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.077567][ T4962] Call trace: [ 81.078101][ T4962] dump_backtrace+0x0/0x458 [ 81.078762][ T4962] show_stack+0x2c/0x3c [ 81.079389][ T4962] __dump_stack+0x30/0x40 [ 81.080118][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.080793][ T4962] dump_stack+0x1c/0x5c [ 81.081464][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.082363][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.083117][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.083898][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.084625][ T4962] inet_sendmsg+0x154/0x284 [ 81.085276][ T4962] __sys_sendto+0x30c/0x420 [ 81.086040][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.086833][ T4962] invoke_syscall+0x98/0x2b0 [ 81.087710][ T4962] el0_svc_common+0x138/0x258 [ 81.088557][ T4962] do_el0_svc+0x58/0x13c [ 81.089195][ T4962] el0_svc+0x78/0x1d0 [ 81.089821][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.090628][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.091575][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.093499][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.094628][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.096112][ T4962] Call trace: [ 81.096594][ T4962] dump_backtrace+0x0/0x458 [ 81.097284][ T4962] show_stack+0x2c/0x3c [ 81.097864][ T4962] __dump_stack+0x30/0x40 [ 81.098541][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.099141][ T4962] dump_stack+0x1c/0x5c [ 81.099773][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.100643][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.101395][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.102113][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.102870][ T4962] inet_sendmsg+0x154/0x284 [ 81.103620][ T4962] __sys_sendto+0x30c/0x420 [ 81.104287][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.105137][ T4962] invoke_syscall+0x98/0x2b0 [ 81.105919][ T4962] el0_svc_common+0x138/0x258 [ 81.106669][ T4962] do_el0_svc+0x58/0x13c [ 81.107318][ T4962] el0_svc+0x78/0x1d0 [ 81.107960][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.108771][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.109775][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.111547][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.112663][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.114240][ T4962] Call trace: [ 81.114757][ T4962] dump_backtrace+0x0/0x458 [ 81.115438][ T4962] show_stack+0x2c/0x3c [ 81.116070][ T4962] __dump_stack+0x30/0x40 [ 81.116728][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.117432][ T4962] dump_stack+0x1c/0x5c [ 81.118067][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.118926][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.119651][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.120333][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.121015][ T4962] inet_sendmsg+0x154/0x284 [ 81.121668][ T4962] __sys_sendto+0x30c/0x420 [ 81.122319][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.122970][ T4962] invoke_syscall+0x98/0x2b0 [ 81.123613][ T4962] el0_svc_common+0x138/0x258 [ 81.124327][ T4962] do_el0_svc+0x58/0x13c [ 81.124915][ T4962] el0_svc+0x78/0x1d0 [ 81.125494][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.126188][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.127130][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.128724][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.129779][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.131199][ T4962] Call trace: [ 81.131663][ T4962] dump_backtrace+0x0/0x458 [ 81.132413][ T4962] show_stack+0x2c/0x3c [ 81.133063][ T4962] __dump_stack+0x30/0x40 [ 81.133770][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.134454][ T4962] dump_stack+0x1c/0x5c [ 81.135041][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.135853][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.136695][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.137416][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.138123][ T4962] inet_sendmsg+0x154/0x284 [ 81.138802][ T4962] __sys_sendto+0x30c/0x420 [ 81.139555][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.140389][ T4962] invoke_syscall+0x98/0x2b0 [ 81.141127][ T4962] el0_svc_common+0x138/0x258 [ 81.141883][ T4962] do_el0_svc+0x58/0x13c [ 81.142587][ T4962] el0_svc+0x78/0x1d0 [ 81.143229][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.144001][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.145284][ T4962] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.147009][ T4962] CPU: 0 PID: 4962 Comm: syz.0.27 Not tainted syzkaller #0 [ 81.148058][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.149575][ T4962] Call trace: [ 81.150033][ T4962] dump_backtrace+0x0/0x458 [ 81.150718][ T4962] show_stack+0x2c/0x3c [ 81.151294][ T4962] __dump_stack+0x30/0x40 [ 81.151960][ T4962] dump_stack_lvl+0xf4/0x15c [ 81.152692][ T4962] dump_stack+0x1c/0x5c [ 81.153367][ T4962] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.154263][ T4962] dccp_xmit_packet+0x298/0x448 [ 81.155036][ T4962] dccp_write_xmit+0x118/0x1d0 [ 81.155790][ T4962] dccp_sendmsg+0x550/0x8b8 [ 81.156485][ T4962] inet_sendmsg+0x154/0x284 [ 81.157254][ T4962] __sys_sendto+0x30c/0x420 [ 81.157943][ T4962] __arm64_sys_sendto+0xd8/0xf8 [ 81.158669][ T4962] invoke_syscall+0x98/0x2b0 [ 81.159365][ T4962] el0_svc_common+0x138/0x258 [ 81.160149][ T4962] do_el0_svc+0x58/0x13c [ 81.160844][ T4962] el0_svc+0x78/0x1d0 [ 81.161489][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 81.162281][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 81.181357][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.183954][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.185108][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.186724][ T4964] Call trace: [ 81.187249][ T4964] dump_backtrace+0x0/0x458 [ 81.187948][ T4964] show_stack+0x2c/0x3c [ 81.188577][ T4964] __dump_stack+0x30/0x40 [ 81.189275][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.190025][ T4964] dump_stack+0x1c/0x5c [ 81.190695][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.191589][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.192331][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.193103][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.193904][ T4964] inet_sendmsg+0x154/0x284 [ 81.194599][ T4964] __sys_sendto+0x30c/0x420 [ 81.195365][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.196192][ T4964] invoke_syscall+0x98/0x2b0 [ 81.196974][ T4964] el0_svc_common+0x138/0x258 [ 81.197736][ T4964] do_el0_svc+0x58/0x13c [ 81.198441][ T4964] el0_svc+0x78/0x1d0 [ 81.199104][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.199916][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.201303][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.204552][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.205614][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.207096][ T4964] Call trace: [ 81.207604][ T4964] dump_backtrace+0x0/0x458 [ 81.208275][ T4964] show_stack+0x2c/0x3c [ 81.208889][ T4964] __dump_stack+0x30/0x40 [ 81.209579][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.210288][ T4964] dump_stack+0x1c/0x5c [ 81.210934][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.211742][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.212493][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.213239][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.213969][ T4964] inet_sendmsg+0x154/0x284 [ 81.214675][ T4964] __sys_sendto+0x30c/0x420 [ 81.215359][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.216093][ T4964] invoke_syscall+0x98/0x2b0 [ 81.216796][ T4964] el0_svc_common+0x138/0x258 [ 81.217600][ T4964] do_el0_svc+0x58/0x13c [ 81.218297][ T4964] el0_svc+0x78/0x1d0 [ 81.218950][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.219776][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.220765][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.222542][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.223552][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.225081][ T4964] Call trace: [ 81.225641][ T4964] dump_backtrace+0x0/0x458 [ 81.226302][ T4964] show_stack+0x2c/0x3c [ 81.226927][ T4964] __dump_stack+0x30/0x40 [ 81.227589][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.228359][ T4964] dump_stack+0x1c/0x5c [ 81.229046][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.229934][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.230732][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.231471][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.232148][ T4964] inet_sendmsg+0x154/0x284 [ 81.232808][ T4964] __sys_sendto+0x30c/0x420 [ 81.233469][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.234186][ T4964] invoke_syscall+0x98/0x2b0 [ 81.234867][ T4964] el0_svc_common+0x138/0x258 [ 81.235602][ T4964] do_el0_svc+0x58/0x13c [ 81.236229][ T4964] el0_svc+0x78/0x1d0 [ 81.236845][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.237589][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.238726][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.240395][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.241510][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.243161][ T4964] Call trace: [ 81.243688][ T4964] dump_backtrace+0x0/0x458 [ 81.244400][ T4964] show_stack+0x2c/0x3c [ 81.245156][ T4964] __dump_stack+0x30/0x40 [ 81.245883][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.246657][ T4964] dump_stack+0x1c/0x5c [ 81.247360][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.248246][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.249051][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.249786][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.250530][ T4964] inet_sendmsg+0x154/0x284 [ 81.251231][ T4964] __sys_sendto+0x30c/0x420 [ 81.252005][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.252821][ T4964] invoke_syscall+0x98/0x2b0 [ 81.253579][ T4964] el0_svc_common+0x138/0x258 [ 81.254388][ T4964] do_el0_svc+0x58/0x13c [ 81.255116][ T4964] el0_svc+0x78/0x1d0 [ 81.255791][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.256614][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.261192][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.263284][ T4964] CPU: 0 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.264443][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.266065][ T4964] Call trace: [ 81.266623][ T4964] dump_backtrace+0x0/0x458 [ 81.267409][ T4964] show_stack+0x2c/0x3c [ 81.268096][ T4964] __dump_stack+0x30/0x40 [ 81.268808][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.269561][ T4964] dump_stack+0x1c/0x5c [ 81.270252][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.271146][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.271954][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.272735][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.273464][ T4964] inet_sendmsg+0x154/0x284 [ 81.274154][ T4964] __sys_sendto+0x30c/0x420 [ 81.274911][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.275652][ T4964] invoke_syscall+0x98/0x2b0 [ 81.276361][ T4964] el0_svc_common+0x138/0x258 [ 81.277089][ T4964] do_el0_svc+0x58/0x13c [ 81.277716][ T4964] el0_svc+0x78/0x1d0 [ 81.278310][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.279046][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.281147][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.283092][ T372] device hsr_slave_0 left promiscuous mode [ 81.283244][ T4964] CPU: 0 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.285194][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.286801][ T4964] Call trace: [ 81.287294][ T4964] dump_backtrace+0x0/0x458 [ 81.288012][ T4964] show_stack+0x2c/0x3c [ 81.288650][ T4964] __dump_stack+0x30/0x40 [ 81.289311][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.289982][ T4964] dump_stack+0x1c/0x5c [ 81.290589][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.291393][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.292182][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.292895][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.293682][ T4964] inet_sendmsg+0x154/0x284 [ 81.294457][ T4964] __sys_sendto+0x30c/0x420 [ 81.295185][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.295982][ T4964] invoke_syscall+0x98/0x2b0 [ 81.296766][ T4964] el0_svc_common+0x138/0x258 [ 81.297540][ T4964] do_el0_svc+0x58/0x13c [ 81.298225][ T4964] el0_svc+0x78/0x1d0 [ 81.298840][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.299625][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.301511][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.303384][ T4066] Bluetooth: hci0: command 0x0419 tx timeout [ 81.304212][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.305400][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.306865][ T4964] Call trace: [ 81.307379][ T4964] dump_backtrace+0x0/0x458 [ 81.308065][ T4964] show_stack+0x2c/0x3c [ 81.308687][ T4964] __dump_stack+0x30/0x40 [ 81.309307][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.309983][ T4964] dump_stack+0x1c/0x5c [ 81.310647][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.311419][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.312093][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.312767][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.313408][ T4964] inet_sendmsg+0x154/0x284 [ 81.314049][ T4964] __sys_sendto+0x30c/0x420 [ 81.314710][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.315392][ T4964] invoke_syscall+0x98/0x2b0 [ 81.316056][ T4964] el0_svc_common+0x138/0x258 [ 81.316742][ T4964] do_el0_svc+0x58/0x13c [ 81.317374][ T4964] el0_svc+0x78/0x1d0 [ 81.317959][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.318675][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.320077][ T372] device hsr_slave_1 left promiscuous mode [ 81.321195][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.323018][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.324096][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.325581][ T4964] Call trace: [ 81.326051][ T4964] dump_backtrace+0x0/0x458 [ 81.326733][ T4964] show_stack+0x2c/0x3c [ 81.327345][ T4964] __dump_stack+0x30/0x40 [ 81.328068][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.328803][ T4964] dump_stack+0x1c/0x5c [ 81.329514][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.330428][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.331204][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.331929][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.332679][ T4964] inet_sendmsg+0x154/0x284 [ 81.333437][ T4964] __sys_sendto+0x30c/0x420 [ 81.334196][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.335014][ T4964] invoke_syscall+0x98/0x2b0 [ 81.335722][ T4964] el0_svc_common+0x138/0x258 [ 81.336447][ T4964] do_el0_svc+0x58/0x13c [ 81.337140][ T4964] el0_svc+0x78/0x1d0 [ 81.337850][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.338707][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.339929][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.341677][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.342878][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.344428][ T4964] Call trace: [ 81.344921][ T4964] dump_backtrace+0x0/0x458 [ 81.345601][ T4964] show_stack+0x2c/0x3c [ 81.346278][ T4964] __dump_stack+0x30/0x40 [ 81.346989][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.347764][ T4964] dump_stack+0x1c/0x5c [ 81.348485][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.349383][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.350195][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.351021][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.351729][ T4964] inet_sendmsg+0x154/0x284 [ 81.352482][ T4964] __sys_sendto+0x30c/0x420 [ 81.353203][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.353955][ T4964] invoke_syscall+0x98/0x2b0 [ 81.354722][ T4964] el0_svc_common+0x138/0x258 [ 81.355615][ T4964] do_el0_svc+0x58/0x13c [ 81.356338][ T4964] el0_svc+0x78/0x1d0 [ 81.356994][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.357825][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.358761][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.360407][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.361518][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.363110][ T4964] Call trace: [ 81.363635][ T4964] dump_backtrace+0x0/0x458 [ 81.364460][ T4964] show_stack+0x2c/0x3c [ 81.365157][ T4964] __dump_stack+0x30/0x40 [ 81.365904][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.366670][ T4964] dump_stack+0x1c/0x5c [ 81.367358][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.368258][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.369028][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.369862][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.370572][ T4964] inet_sendmsg+0x154/0x284 [ 81.371338][ T4964] __sys_sendto+0x30c/0x420 [ 81.372073][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.372762][ T4964] invoke_syscall+0x98/0x2b0 [ 81.373455][ T4964] el0_svc_common+0x138/0x258 [ 81.374159][ T4964] do_el0_svc+0x58/0x13c [ 81.374801][ T4964] el0_svc+0x78/0x1d0 [ 81.375392][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.376107][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.377056][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.378721][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.379859][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.381513][ T4964] Call trace: [ 81.382087][ T4964] dump_backtrace+0x0/0x458 [ 81.382599][ T372] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.382838][ T4964] show_stack+0x2c/0x3c [ 81.382850][ T4964] __dump_stack+0x30/0x40 [ 81.384021][ T372] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.384678][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.387184][ T4964] dump_stack+0x1c/0x5c [ 81.387859][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.388706][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.389458][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.390260][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.390982][ T4964] inet_sendmsg+0x154/0x284 [ 81.391713][ T4964] __sys_sendto+0x30c/0x420 [ 81.392432][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.393189][ T4964] invoke_syscall+0x98/0x2b0 [ 81.393958][ T4964] el0_svc_common+0x138/0x258 [ 81.394721][ T4964] do_el0_svc+0x58/0x13c [ 81.395397][ T4964] el0_svc+0x78/0x1d0 [ 81.396015][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.396851][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.397814][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.398301][ T372] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.399534][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.400574][ T372] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.401661][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.404286][ T4964] Call trace: [ 81.404775][ T4964] dump_backtrace+0x0/0x458 [ 81.405517][ T4964] show_stack+0x2c/0x3c [ 81.406161][ T4964] __dump_stack+0x30/0x40 [ 81.406813][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.407566][ T4964] dump_stack+0x1c/0x5c [ 81.408261][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.409151][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.409878][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.410642][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.411355][ T4964] inet_sendmsg+0x154/0x284 [ 81.412114][ T4964] __sys_sendto+0x30c/0x420 [ 81.412813][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.413561][ T4964] invoke_syscall+0x98/0x2b0 [ 81.414221][ T4964] el0_svc_common+0x138/0x258 [ 81.414986][ T4964] do_el0_svc+0x58/0x13c [ 81.415698][ T4964] el0_svc+0x78/0x1d0 [ 81.416359][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.417143][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.418101][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.418795][ T372] device bridge_slave_1 left promiscuous mode [ 81.419766][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.420835][ T372] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.421758][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.421772][ T4964] Call trace: [ 81.421776][ T4964] dump_backtrace+0x0/0x458 [ 81.421783][ T4964] show_stack+0x2c/0x3c [ 81.421788][ T4964] __dump_stack+0x30/0x40 [ 81.426878][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.427544][ T4964] dump_stack+0x1c/0x5c [ 81.428146][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.428999][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.429766][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.430541][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.431276][ T4964] inet_sendmsg+0x154/0x284 [ 81.431977][ T4964] __sys_sendto+0x30c/0x420 [ 81.432683][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.433489][ T4964] invoke_syscall+0x98/0x2b0 [ 81.434222][ T4964] el0_svc_common+0x138/0x258 [ 81.434945][ T4964] do_el0_svc+0x58/0x13c [ 81.435638][ T4964] el0_svc+0x78/0x1d0 [ 81.436304][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.437121][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.438086][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.439572][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.440538][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.441923][ T4964] Call trace: [ 81.442392][ T4964] dump_backtrace+0x0/0x458 [ 81.443051][ T4964] show_stack+0x2c/0x3c [ 81.443651][ T4964] __dump_stack+0x30/0x40 [ 81.444266][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.445078][ T4964] dump_stack+0x1c/0x5c [ 81.445805][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.446687][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.447525][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.448365][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.449149][ T4964] inet_sendmsg+0x154/0x284 [ 81.449888][ T4964] __sys_sendto+0x30c/0x420 [ 81.450613][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.451384][ T4964] invoke_syscall+0x98/0x2b0 [ 81.452114][ T4964] el0_svc_common+0x138/0x258 [ 81.452836][ T4964] do_el0_svc+0x58/0x13c [ 81.453574][ T4964] el0_svc+0x78/0x1d0 [ 81.454211][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.455093][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.456022][ T4964] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.457861][ T4964] CPU: 1 PID: 4964 Comm: syz.0.28 Not tainted syzkaller #0 [ 81.459082][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.460663][ T4964] Call trace: [ 81.461134][ T4964] dump_backtrace+0x0/0x458 [ 81.461880][ T4964] show_stack+0x2c/0x3c [ 81.462534][ T4964] __dump_stack+0x30/0x40 [ 81.463190][ T4964] dump_stack_lvl+0xf4/0x15c [ 81.463887][ T4964] dump_stack+0x1c/0x5c [ 81.464499][ T4964] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.465329][ T4964] dccp_xmit_packet+0x298/0x448 [ 81.466034][ T4964] dccp_write_xmit+0x118/0x1d0 [ 81.466756][ T4964] dccp_sendmsg+0x550/0x8b8 [ 81.467431][ T4964] inet_sendmsg+0x154/0x284 [ 81.468128][ T4964] __sys_sendto+0x30c/0x420 [ 81.468869][ T4964] __arm64_sys_sendto+0xd8/0xf8 [ 81.469611][ T4964] invoke_syscall+0x98/0x2b0 [ 81.470420][ T4964] el0_svc_common+0x138/0x258 [ 81.471222][ T4964] do_el0_svc+0x58/0x13c [ 81.471908][ T4964] el0_svc+0x78/0x1d0 [ 81.472573][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 81.473336][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 81.493421][ T372] device bridge_slave_0 left promiscuous mode [ 81.494619][ T372] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.495058][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.497382][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.498471][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.500127][ T4966] Call trace: [ 81.500676][ T4966] dump_backtrace+0x0/0x458 [ 81.501376][ T4966] show_stack+0x2c/0x3c [ 81.501998][ T4966] __dump_stack+0x30/0x40 [ 81.502737][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.503519][ T4966] dump_stack+0x1c/0x5c [ 81.504197][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.505150][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.505929][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.506698][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.507470][ T4966] inet_sendmsg+0x154/0x284 [ 81.508215][ T4966] __sys_sendto+0x30c/0x420 [ 81.508961][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.509747][ T4966] invoke_syscall+0x98/0x2b0 [ 81.510487][ T4966] el0_svc_common+0x138/0x258 [ 81.511237][ T4966] do_el0_svc+0x58/0x13c [ 81.511888][ T4966] el0_svc+0x78/0x1d0 [ 81.512486][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.513234][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.514257][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.515798][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.516927][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.518573][ T4966] Call trace: [ 81.519113][ T4966] dump_backtrace+0x0/0x458 [ 81.519845][ T4966] show_stack+0x2c/0x3c [ 81.520495][ T4966] __dump_stack+0x30/0x40 [ 81.521176][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.521901][ T4966] dump_stack+0x1c/0x5c [ 81.522583][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.523470][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.524294][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.525098][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.525832][ T4966] inet_sendmsg+0x154/0x284 [ 81.526596][ T4966] __sys_sendto+0x30c/0x420 [ 81.527339][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.528140][ T4966] invoke_syscall+0x98/0x2b0 [ 81.528850][ T4966] el0_svc_common+0x138/0x258 [ 81.529598][ T4966] do_el0_svc+0x58/0x13c [ 81.530277][ T4966] el0_svc+0x78/0x1d0 [ 81.530916][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.531719][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.533308][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.535093][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.536332][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.537946][ T4966] Call trace: [ 81.538456][ T4966] dump_backtrace+0x0/0x458 [ 81.539144][ T4966] show_stack+0x2c/0x3c [ 81.539769][ T4966] __dump_stack+0x30/0x40 [ 81.540381][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.541065][ T4966] dump_stack+0x1c/0x5c [ 81.541680][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.542540][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.543290][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.544018][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.544669][ T4966] inet_sendmsg+0x154/0x284 [ 81.545343][ T4966] __sys_sendto+0x30c/0x420 [ 81.546014][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.546824][ T4966] invoke_syscall+0x98/0x2b0 [ 81.547601][ T4966] el0_svc_common+0x138/0x258 [ 81.548447][ T4966] do_el0_svc+0x58/0x13c [ 81.549092][ T4966] el0_svc+0x78/0x1d0 [ 81.549699][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.550475][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.551346][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.553208][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.554334][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.555769][ T4966] Call trace: [ 81.556253][ T4966] dump_backtrace+0x0/0x458 [ 81.556894][ T4966] show_stack+0x2c/0x3c [ 81.557517][ T4966] __dump_stack+0x30/0x40 [ 81.558178][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.558940][ T4966] dump_stack+0x1c/0x5c [ 81.559566][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.560469][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.561175][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.561976][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.562691][ T4966] inet_sendmsg+0x154/0x284 [ 81.563472][ T4966] __sys_sendto+0x30c/0x420 [ 81.564238][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.565010][ T4966] invoke_syscall+0x98/0x2b0 [ 81.565771][ T4966] el0_svc_common+0x138/0x258 [ 81.566497][ T4966] do_el0_svc+0x58/0x13c [ 81.567213][ T4966] el0_svc+0x78/0x1d0 [ 81.567834][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.568602][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.569503][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.571199][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.572352][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.574099][ T4966] Call trace: [ 81.574614][ T4966] dump_backtrace+0x0/0x458 [ 81.575367][ T4966] show_stack+0x2c/0x3c [ 81.576029][ T4966] __dump_stack+0x30/0x40 [ 81.576680][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.577376][ T4966] dump_stack+0x1c/0x5c [ 81.578078][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.578877][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.579616][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.580337][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.581082][ T4966] inet_sendmsg+0x154/0x284 [ 81.581864][ T4966] __sys_sendto+0x30c/0x420 [ 81.582582][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.583355][ T4966] invoke_syscall+0x98/0x2b0 [ 81.584098][ T4966] el0_svc_common+0x138/0x258 [ 81.584830][ T4966] do_el0_svc+0x58/0x13c [ 81.585534][ T4966] el0_svc+0x78/0x1d0 [ 81.586152][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.586953][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.587897][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.589644][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.590744][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.592320][ T4966] Call trace: [ 81.592875][ T4966] dump_backtrace+0x0/0x458 [ 81.593575][ T4966] show_stack+0x2c/0x3c [ 81.594207][ T4966] __dump_stack+0x30/0x40 [ 81.594927][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.595768][ T4966] dump_stack+0x1c/0x5c [ 81.596403][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.597283][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.598051][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.598801][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.599599][ T4966] inet_sendmsg+0x154/0x284 [ 81.600289][ T4966] __sys_sendto+0x30c/0x420 [ 81.600976][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.601823][ T4966] invoke_syscall+0x98/0x2b0 [ 81.602567][ T4966] el0_svc_common+0x138/0x258 [ 81.603283][ T4966] do_el0_svc+0x58/0x13c [ 81.603962][ T4966] el0_svc+0x78/0x1d0 [ 81.604578][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.605361][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.606273][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.608099][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.609236][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.610861][ T4966] Call trace: [ 81.611370][ T4966] dump_backtrace+0x0/0x458 [ 81.612104][ T4966] show_stack+0x2c/0x3c [ 81.612813][ T4966] __dump_stack+0x30/0x40 [ 81.613487][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.614211][ T4966] dump_stack+0x1c/0x5c [ 81.614912][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.615835][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.616600][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.617346][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.618062][ T4966] inet_sendmsg+0x154/0x284 [ 81.618804][ T4966] __sys_sendto+0x30c/0x420 [ 81.619537][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.620343][ T4966] invoke_syscall+0x98/0x2b0 [ 81.621122][ T4966] el0_svc_common+0x138/0x258 [ 81.621926][ T4966] do_el0_svc+0x58/0x13c [ 81.622664][ T4966] el0_svc+0x78/0x1d0 [ 81.623343][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.624176][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.625471][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.627039][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.628033][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.629478][ T4966] Call trace: [ 81.629948][ T4966] dump_backtrace+0x0/0x458 [ 81.630630][ T4966] show_stack+0x2c/0x3c [ 81.631190][ T4966] __dump_stack+0x30/0x40 [ 81.631908][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.632674][ T4966] dump_stack+0x1c/0x5c [ 81.633338][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.634235][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.635007][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.635803][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.636525][ T4966] inet_sendmsg+0x154/0x284 [ 81.637235][ T4966] __sys_sendto+0x30c/0x420 [ 81.638013][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.638813][ T4966] invoke_syscall+0x98/0x2b0 [ 81.639551][ T4966] el0_svc_common+0x138/0x258 [ 81.640280][ T4966] do_el0_svc+0x58/0x13c [ 81.640973][ T4966] el0_svc+0x78/0x1d0 [ 81.641622][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.642406][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.643383][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.644923][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.646007][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.647547][ T4966] Call trace: [ 81.648096][ T4966] dump_backtrace+0x0/0x458 [ 81.648790][ T4966] show_stack+0x2c/0x3c [ 81.649496][ T4966] __dump_stack+0x30/0x40 [ 81.650211][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.651010][ T4966] dump_stack+0x1c/0x5c [ 81.651713][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.652703][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.653450][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.654189][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.654968][ T4966] inet_sendmsg+0x154/0x284 [ 81.655725][ T4966] __sys_sendto+0x30c/0x420 [ 81.656455][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.657248][ T4966] invoke_syscall+0x98/0x2b0 [ 81.658084][ T4966] el0_svc_common+0x138/0x258 [ 81.658841][ T4966] do_el0_svc+0x58/0x13c [ 81.659535][ T4966] el0_svc+0x78/0x1d0 [ 81.660200][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.661043][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.661961][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.663623][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.664716][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.666253][ T4966] Call trace: [ 81.666764][ T4966] dump_backtrace+0x0/0x458 [ 81.667489][ T4966] show_stack+0x2c/0x3c [ 81.668125][ T4966] __dump_stack+0x30/0x40 [ 81.668756][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.669514][ T4966] dump_stack+0x1c/0x5c [ 81.670148][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.670961][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.671628][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.672401][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.673155][ T4966] inet_sendmsg+0x154/0x284 [ 81.673921][ T4966] __sys_sendto+0x30c/0x420 [ 81.674638][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.675420][ T4966] invoke_syscall+0x98/0x2b0 [ 81.676264][ T4966] el0_svc_common+0x138/0x258 [ 81.676994][ T4966] do_el0_svc+0x58/0x13c [ 81.677658][ T4966] el0_svc+0x78/0x1d0 [ 81.678349][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.679149][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.680086][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.681945][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.683066][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.684794][ T4966] Call trace: [ 81.685355][ T4966] dump_backtrace+0x0/0x458 [ 81.686097][ T4966] show_stack+0x2c/0x3c [ 81.686823][ T4966] __dump_stack+0x30/0x40 [ 81.687534][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.688297][ T4966] dump_stack+0x1c/0x5c [ 81.688948][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.689782][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.690511][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.691216][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.691937][ T4966] inet_sendmsg+0x154/0x284 [ 81.692698][ T4966] __sys_sendto+0x30c/0x420 [ 81.693456][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.694226][ T4966] invoke_syscall+0x98/0x2b0 [ 81.695021][ T4966] el0_svc_common+0x138/0x258 [ 81.695813][ T4966] do_el0_svc+0x58/0x13c [ 81.696507][ T4966] el0_svc+0x78/0x1d0 [ 81.697199][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.698041][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.698913][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.700517][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.701540][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.702010][ T372] device veth1_macvtap left promiscuous mode [ 81.703026][ T4966] Call trace: [ 81.703999][ T372] device veth0_macvtap left promiscuous mode [ 81.704511][ T4966] dump_backtrace+0x0/0x458 [ 81.705479][ T372] device veth1_vlan left promiscuous mode [ 81.706108][ T4966] show_stack+0x2c/0x3c [ 81.706121][ T4966] __dump_stack+0x30/0x40 [ 81.707067][ T372] device veth0_vlan left promiscuous mode [ 81.707678][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.710003][ T4966] dump_stack+0x1c/0x5c [ 81.710660][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.711546][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.712341][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.713113][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.713842][ T4966] inet_sendmsg+0x154/0x284 [ 81.714589][ T4966] __sys_sendto+0x30c/0x420 [ 81.715237][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.715925][ T4966] invoke_syscall+0x98/0x2b0 [ 81.716687][ T4966] el0_svc_common+0x138/0x258 [ 81.717457][ T4966] do_el0_svc+0x58/0x13c [ 81.718150][ T4966] el0_svc+0x78/0x1d0 [ 81.718783][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.719612][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.720514][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.722348][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.723393][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.725013][ T4966] Call trace: [ 81.725535][ T4966] dump_backtrace+0x0/0x458 [ 81.726306][ T4966] show_stack+0x2c/0x3c [ 81.726952][ T4966] __dump_stack+0x30/0x40 [ 81.727598][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.728337][ T4966] dump_stack+0x1c/0x5c [ 81.728939][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.729862][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.730650][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.731370][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.732056][ T4966] inet_sendmsg+0x154/0x284 [ 81.732738][ T4966] __sys_sendto+0x30c/0x420 [ 81.733441][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.734237][ T4966] invoke_syscall+0x98/0x2b0 [ 81.734915][ T4966] el0_svc_common+0x138/0x258 [ 81.735597][ T4966] do_el0_svc+0x58/0x13c [ 81.736243][ T4966] el0_svc+0x78/0x1d0 [ 81.736807][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.737546][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.738439][ T4966] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.740038][ T4966] CPU: 1 PID: 4966 Comm: syz.0.29 Not tainted syzkaller #0 [ 81.741068][ T4966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.742748][ T4966] Call trace: [ 81.743264][ T4966] dump_backtrace+0x0/0x458 [ 81.743975][ T4966] show_stack+0x2c/0x3c [ 81.744655][ T4966] __dump_stack+0x30/0x40 [ 81.745355][ T4966] dump_stack_lvl+0xf4/0x15c [ 81.746101][ T4966] dump_stack+0x1c/0x5c [ 81.746785][ T4966] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.747672][ T4966] dccp_xmit_packet+0x298/0x448 [ 81.748431][ T4966] dccp_write_xmit+0x118/0x1d0 [ 81.749229][ T4966] dccp_sendmsg+0x550/0x8b8 [ 81.750008][ T4966] inet_sendmsg+0x154/0x284 [ 81.750743][ T4966] __sys_sendto+0x30c/0x420 [ 81.751443][ T4966] __arm64_sys_sendto+0xd8/0xf8 [ 81.752254][ T4966] invoke_syscall+0x98/0x2b0 [ 81.752982][ T4966] el0_svc_common+0x138/0x258 [ 81.753686][ T4966] do_el0_svc+0x58/0x13c [ 81.754345][ T4966] el0_svc+0x78/0x1d0 [ 81.755027][ T4966] el0t_64_sync_handler+0xcc/0xe4 [ 81.755813][ T4966] el0t_64_sync+0x1a0/0x1a4 [ 81.772999][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.774974][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.776030][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.777612][ T4968] Call trace: [ 81.778146][ T4968] dump_backtrace+0x0/0x458 [ 81.778810][ T4968] show_stack+0x2c/0x3c [ 81.779368][ T4968] __dump_stack+0x30/0x40 [ 81.780029][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.780760][ T4968] dump_stack+0x1c/0x5c [ 81.781425][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.782321][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.783117][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.783935][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.784692][ T4968] inet_sendmsg+0x154/0x284 [ 81.785441][ T4968] __sys_sendto+0x30c/0x420 [ 81.786173][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.787014][ T4968] invoke_syscall+0x98/0x2b0 [ 81.787692][ T4968] el0_svc_common+0x138/0x258 [ 81.788390][ T4968] do_el0_svc+0x58/0x13c [ 81.788968][ T4968] el0_svc+0x78/0x1d0 [ 81.789551][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.790287][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.791429][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.793243][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.794327][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.795741][ T4968] Call trace: [ 81.796258][ T4968] dump_backtrace+0x0/0x458 [ 81.796974][ T4968] show_stack+0x2c/0x3c [ 81.797580][ T4968] __dump_stack+0x30/0x40 [ 81.798233][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.798943][ T4968] dump_stack+0x1c/0x5c [ 81.799584][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.800425][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.801153][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.801885][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.802579][ T4968] inet_sendmsg+0x154/0x284 [ 81.803261][ T4968] __sys_sendto+0x30c/0x420 [ 81.803958][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.804674][ T4968] invoke_syscall+0x98/0x2b0 [ 81.805486][ T4968] el0_svc_common+0x138/0x258 [ 81.806279][ T4968] do_el0_svc+0x58/0x13c [ 81.806939][ T4968] el0_svc+0x78/0x1d0 [ 81.807602][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.808380][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.809949][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.811908][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.813134][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.814940][ T4968] Call trace: [ 81.815436][ T4968] dump_backtrace+0x0/0x458 [ 81.816157][ T4968] show_stack+0x2c/0x3c [ 81.816857][ T4968] __dump_stack+0x30/0x40 [ 81.817560][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.818362][ T4968] dump_stack+0x1c/0x5c [ 81.819080][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.820046][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.820841][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.821588][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.822261][ T4968] inet_sendmsg+0x154/0x284 [ 81.822980][ T4968] __sys_sendto+0x30c/0x420 [ 81.823756][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.824585][ T4968] invoke_syscall+0x98/0x2b0 [ 81.825384][ T4968] el0_svc_common+0x138/0x258 [ 81.826165][ T4968] do_el0_svc+0x58/0x13c [ 81.826872][ T4968] el0_svc+0x78/0x1d0 [ 81.827507][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.828312][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.829370][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.830973][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.832018][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.833720][ T4968] Call trace: [ 81.834232][ T4968] dump_backtrace+0x0/0x458 [ 81.834923][ T4968] show_stack+0x2c/0x3c [ 81.835544][ T4968] __dump_stack+0x30/0x40 [ 81.836196][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.836921][ T4968] dump_stack+0x1c/0x5c [ 81.837560][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.838492][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.839313][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.840087][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.840821][ T4968] inet_sendmsg+0x154/0x284 [ 81.841609][ T4968] __sys_sendto+0x30c/0x420 [ 81.842337][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.843149][ T4968] invoke_syscall+0x98/0x2b0 [ 81.843896][ T4968] el0_svc_common+0x138/0x258 [ 81.844621][ T4968] do_el0_svc+0x58/0x13c [ 81.845295][ T4968] el0_svc+0x78/0x1d0 [ 81.845913][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.846706][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.847829][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.849682][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.850864][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.852566][ T4968] Call trace: [ 81.853159][ T4968] dump_backtrace+0x0/0x458 [ 81.853847][ T4968] show_stack+0x2c/0x3c [ 81.854426][ T4968] __dump_stack+0x30/0x40 [ 81.855055][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.855785][ T4968] dump_stack+0x1c/0x5c [ 81.856457][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.857271][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.858022][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.858734][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.859429][ T4968] inet_sendmsg+0x154/0x284 [ 81.860086][ T4968] __sys_sendto+0x30c/0x420 [ 81.860777][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.861512][ T4968] invoke_syscall+0x98/0x2b0 [ 81.862272][ T4968] el0_svc_common+0x138/0x258 [ 81.863029][ T4968] do_el0_svc+0x58/0x13c [ 81.863723][ T4968] el0_svc+0x78/0x1d0 [ 81.864382][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.865205][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.866343][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.868123][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.869223][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.870759][ T4968] Call trace: [ 81.871261][ T4968] dump_backtrace+0x0/0x458 [ 81.871998][ T4968] show_stack+0x2c/0x3c [ 81.872630][ T4968] __dump_stack+0x30/0x40 [ 81.873350][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.874101][ T4968] dump_stack+0x1c/0x5c [ 81.874772][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.875625][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.876380][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.877076][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.877807][ T4968] inet_sendmsg+0x154/0x284 [ 81.878556][ T4968] __sys_sendto+0x30c/0x420 [ 81.879287][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.880183][ T4968] invoke_syscall+0x98/0x2b0 [ 81.880923][ T4968] el0_svc_common+0x138/0x258 [ 81.881671][ T4968] do_el0_svc+0x58/0x13c [ 81.882364][ T4968] el0_svc+0x78/0x1d0 [ 81.883014][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.883824][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.884840][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.886728][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.887819][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.889377][ T4968] Call trace: [ 81.889867][ T4968] dump_backtrace+0x0/0x458 [ 81.890566][ T4968] show_stack+0x2c/0x3c [ 81.891252][ T4968] __dump_stack+0x30/0x40 [ 81.891930][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.892661][ T4968] dump_stack+0x1c/0x5c [ 81.893315][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.894178][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.894887][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.895618][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.896369][ T4968] inet_sendmsg+0x154/0x284 [ 81.897062][ T4968] __sys_sendto+0x30c/0x420 [ 81.897686][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.898461][ T4968] invoke_syscall+0x98/0x2b0 [ 81.899198][ T4968] el0_svc_common+0x138/0x258 [ 81.899916][ T4968] do_el0_svc+0x58/0x13c [ 81.900575][ T4968] el0_svc+0x78/0x1d0 [ 81.901234][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.902007][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.903007][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.904774][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.905846][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.907428][ T4968] Call trace: [ 81.907923][ T4968] dump_backtrace+0x0/0x458 [ 81.908640][ T4968] show_stack+0x2c/0x3c [ 81.909262][ T4968] __dump_stack+0x30/0x40 [ 81.909935][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.910636][ T4968] dump_stack+0x1c/0x5c [ 81.911295][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.912139][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.912937][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.913724][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.914391][ T4968] inet_sendmsg+0x154/0x284 [ 81.915119][ T4968] __sys_sendto+0x30c/0x420 [ 81.915757][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.916571][ T4968] invoke_syscall+0x98/0x2b0 [ 81.917277][ T4968] el0_svc_common+0x138/0x258 [ 81.918001][ T4968] do_el0_svc+0x58/0x13c [ 81.918663][ T4968] el0_svc+0x78/0x1d0 [ 81.919283][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.920146][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.921179][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.923018][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.924076][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.925704][ T4968] Call trace: [ 81.926221][ T4968] dump_backtrace+0x0/0x458 [ 81.926906][ T4968] show_stack+0x2c/0x3c [ 81.927582][ T4968] __dump_stack+0x30/0x40 [ 81.928298][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.929035][ T4968] dump_stack+0x1c/0x5c [ 81.929698][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.930551][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.931304][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.932055][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.932752][ T4968] inet_sendmsg+0x154/0x284 [ 81.933433][ T4968] __sys_sendto+0x30c/0x420 [ 81.934158][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.934893][ T4968] invoke_syscall+0x98/0x2b0 [ 81.935634][ T4968] el0_svc_common+0x138/0x258 [ 81.936406][ T4968] do_el0_svc+0x58/0x13c [ 81.937072][ T4968] el0_svc+0x78/0x1d0 [ 81.937656][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.938477][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.939657][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.941385][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.942451][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.944053][ T4968] Call trace: [ 81.944590][ T4968] dump_backtrace+0x0/0x458 [ 81.945364][ T4968] show_stack+0x2c/0x3c [ 81.946070][ T4968] __dump_stack+0x30/0x40 [ 81.946786][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.947522][ T4968] dump_stack+0x1c/0x5c [ 81.948157][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.949087][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.949836][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.950582][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.951303][ T4968] inet_sendmsg+0x154/0x284 [ 81.952060][ T4968] __sys_sendto+0x30c/0x420 [ 81.952769][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.953498][ T4968] invoke_syscall+0x98/0x2b0 [ 81.954190][ T4968] el0_svc_common+0x138/0x258 [ 81.954999][ T4968] do_el0_svc+0x58/0x13c [ 81.955754][ T4968] el0_svc+0x78/0x1d0 [ 81.956422][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.957247][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.958668][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.960393][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.961500][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.963236][ T4968] Call trace: [ 81.963786][ T4968] dump_backtrace+0x0/0x458 [ 81.964529][ T4968] show_stack+0x2c/0x3c [ 81.965206][ T4968] __dump_stack+0x30/0x40 [ 81.965876][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.966657][ T4968] dump_stack+0x1c/0x5c [ 81.967344][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.968206][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.969044][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.969860][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.970665][ T4968] inet_sendmsg+0x154/0x284 [ 81.971322][ T4968] __sys_sendto+0x30c/0x420 [ 81.972053][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.972817][ T4968] invoke_syscall+0x98/0x2b0 [ 81.973513][ T4968] el0_svc_common+0x138/0x258 [ 81.974199][ T4968] do_el0_svc+0x58/0x13c [ 81.974932][ T4968] el0_svc+0x78/0x1d0 [ 81.975544][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.976364][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.977412][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.979235][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.980318][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.982021][ T4968] Call trace: [ 81.982576][ T4968] dump_backtrace+0x0/0x458 [ 81.983251][ T4968] show_stack+0x2c/0x3c [ 81.983961][ T4968] __dump_stack+0x30/0x40 [ 81.984705][ T4968] dump_stack_lvl+0xf4/0x15c [ 81.985494][ T4968] dump_stack+0x1c/0x5c [ 81.986126][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 81.987017][ T4968] dccp_xmit_packet+0x298/0x448 [ 81.987834][ T4968] dccp_write_xmit+0x118/0x1d0 [ 81.988637][ T4968] dccp_sendmsg+0x550/0x8b8 [ 81.989414][ T4968] inet_sendmsg+0x154/0x284 [ 81.990148][ T4968] __sys_sendto+0x30c/0x420 [ 81.990876][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 81.991691][ T4968] invoke_syscall+0x98/0x2b0 [ 81.992497][ T4968] el0_svc_common+0x138/0x258 [ 81.993272][ T4968] do_el0_svc+0x58/0x13c [ 81.993987][ T4968] el0_svc+0x78/0x1d0 [ 81.994678][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 81.995467][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 81.996566][ T4968] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 81.998400][ T4968] CPU: 1 PID: 4968 Comm: syz.0.30 Not tainted syzkaller #0 [ 81.999506][ T4968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.001138][ T4968] Call trace: [ 82.001681][ T4968] dump_backtrace+0x0/0x458 [ 82.002390][ T4968] show_stack+0x2c/0x3c [ 82.003094][ T4968] __dump_stack+0x30/0x40 [ 82.003814][ T4968] dump_stack_lvl+0xf4/0x15c [ 82.004635][ T4968] dump_stack+0x1c/0x5c [ 82.005340][ T4968] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.006272][ T4968] dccp_xmit_packet+0x298/0x448 [ 82.007132][ T4968] dccp_write_xmit+0x118/0x1d0 [ 82.007961][ T4968] dccp_sendmsg+0x550/0x8b8 [ 82.008730][ T4968] inet_sendmsg+0x154/0x284 [ 82.009427][ T4968] __sys_sendto+0x30c/0x420 [ 82.010210][ T4968] __arm64_sys_sendto+0xd8/0xf8 [ 82.010980][ T4968] invoke_syscall+0x98/0x2b0 [ 82.011716][ T4968] el0_svc_common+0x138/0x258 [ 82.012486][ T4968] do_el0_svc+0x58/0x13c [ 82.013189][ T4968] el0_svc+0x78/0x1d0 [ 82.013830][ T4968] el0t_64_sync_handler+0xcc/0xe4 [ 82.014649][ T4968] el0t_64_sync+0x1a0/0x1a4 [ 82.039891][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.041658][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.042773][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.044499][ T4970] Call trace: [ 82.045064][ T4970] dump_backtrace+0x0/0x458 [ 82.045782][ T4970] show_stack+0x2c/0x3c [ 82.046400][ T4970] __dump_stack+0x30/0x40 [ 82.047081][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.047766][ T4970] dump_stack+0x1c/0x5c [ 82.048380][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.049251][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.049996][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.050724][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.051425][ T4970] inet_sendmsg+0x154/0x284 [ 82.052135][ T4970] __sys_sendto+0x30c/0x420 [ 82.052831][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.053568][ T4970] invoke_syscall+0x98/0x2b0 [ 82.054283][ T4970] el0_svc_common+0x138/0x258 [ 82.055066][ T4970] do_el0_svc+0x58/0x13c [ 82.055756][ T4970] el0_svc+0x78/0x1d0 [ 82.056415][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.057256][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.058619][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.060226][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.061400][ T372] team0 (unregistering): Port device team_slave_1 removed [ 82.061407][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.061421][ T4970] Call trace: [ 82.061427][ T4970] dump_backtrace+0x0/0x458 [ 82.065578][ T4970] show_stack+0x2c/0x3c [ 82.066281][ T4970] __dump_stack+0x30/0x40 [ 82.067037][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.067828][ T4970] dump_stack+0x1c/0x5c [ 82.068514][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.069437][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.070230][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.070996][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.071720][ T4970] inet_sendmsg+0x154/0x284 [ 82.072443][ T4970] __sys_sendto+0x30c/0x420 [ 82.073154][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.073886][ T4970] invoke_syscall+0x98/0x2b0 [ 82.074681][ T4970] el0_svc_common+0x138/0x258 [ 82.075409][ T4970] do_el0_svc+0x58/0x13c [ 82.076108][ T4970] el0_svc+0x78/0x1d0 [ 82.076737][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.077555][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.078941][ T372] team0 (unregistering): Port device team_slave_0 removed [ 82.080039][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.083571][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.084582][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.086050][ T4970] Call trace: [ 82.086548][ T4970] dump_backtrace+0x0/0x458 [ 82.087208][ T4970] show_stack+0x2c/0x3c [ 82.087838][ T4970] __dump_stack+0x30/0x40 [ 82.088562][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.089320][ T4970] dump_stack+0x1c/0x5c [ 82.089985][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.090894][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.091703][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.092458][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.093193][ T4970] inet_sendmsg+0x154/0x284 [ 82.093863][ T4970] __sys_sendto+0x30c/0x420 [ 82.094563][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.095257][ T4970] invoke_syscall+0x98/0x2b0 [ 82.095919][ T4970] el0_svc_common+0x138/0x258 [ 82.096664][ T4970] do_el0_svc+0x58/0x13c [ 82.097321][ T4970] el0_svc+0x78/0x1d0 [ 82.097913][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.098686][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.099727][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.101358][ T372] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.101407][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.103970][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.105701][ T4970] Call trace: [ 82.106232][ T4970] dump_backtrace+0x0/0x458 [ 82.106978][ T4970] show_stack+0x2c/0x3c [ 82.107648][ T4970] __dump_stack+0x30/0x40 [ 82.108356][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.109128][ T4970] dump_stack+0x1c/0x5c [ 82.109831][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.110727][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.111518][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.112319][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.113043][ T4970] inet_sendmsg+0x154/0x284 [ 82.113797][ T4970] __sys_sendto+0x30c/0x420 [ 82.114498][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.115246][ T4970] invoke_syscall+0x98/0x2b0 [ 82.115969][ T4970] el0_svc_common+0x138/0x258 [ 82.116697][ T4970] do_el0_svc+0x58/0x13c [ 82.117433][ T4970] el0_svc+0x78/0x1d0 [ 82.118073][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.118886][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.120012][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.121898][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.122996][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.124613][ T4970] Call trace: [ 82.125120][ T4970] dump_backtrace+0x0/0x458 [ 82.125835][ T4970] show_stack+0x2c/0x3c [ 82.126532][ T4970] __dump_stack+0x30/0x40 [ 82.127185][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.127917][ T4970] dump_stack+0x1c/0x5c [ 82.128579][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.129413][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.130164][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.130908][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.131604][ T4970] inet_sendmsg+0x154/0x284 [ 82.132354][ T4970] __sys_sendto+0x30c/0x420 [ 82.133111][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.133889][ T4970] invoke_syscall+0x98/0x2b0 [ 82.134611][ T4970] el0_svc_common+0x138/0x258 [ 82.135368][ T4970] do_el0_svc+0x58/0x13c [ 82.136061][ T4970] el0_svc+0x78/0x1d0 [ 82.136677][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.137489][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.138373][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.140260][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.141407][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.143007][ T4970] Call trace: [ 82.143573][ T4970] dump_backtrace+0x0/0x458 [ 82.144311][ T4970] show_stack+0x2c/0x3c [ 82.144969][ T4970] __dump_stack+0x30/0x40 [ 82.145635][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.146379][ T4970] dump_stack+0x1c/0x5c [ 82.147095][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.147986][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.148753][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.149543][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.150344][ T4970] inet_sendmsg+0x154/0x284 [ 82.151097][ T4970] __sys_sendto+0x30c/0x420 [ 82.151826][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.152597][ T4970] invoke_syscall+0x98/0x2b0 [ 82.153354][ T4970] el0_svc_common+0x138/0x258 [ 82.154113][ T4970] do_el0_svc+0x58/0x13c [ 82.154849][ T4970] el0_svc+0x78/0x1d0 [ 82.155463][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.156237][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.157340][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.158285][ T372] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.159132][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.161559][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.163193][ T4970] Call trace: [ 82.163719][ T4970] dump_backtrace+0x0/0x458 [ 82.164454][ T4970] show_stack+0x2c/0x3c [ 82.165089][ T4970] __dump_stack+0x30/0x40 [ 82.165783][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.166493][ T4970] dump_stack+0x1c/0x5c [ 82.167126][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.167887][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.168593][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.169304][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.170060][ T4970] inet_sendmsg+0x154/0x284 [ 82.170782][ T4970] __sys_sendto+0x30c/0x420 [ 82.171536][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.172316][ T4970] invoke_syscall+0x98/0x2b0 [ 82.173041][ T4970] el0_svc_common+0x138/0x258 [ 82.173830][ T4970] do_el0_svc+0x58/0x13c [ 82.174545][ T4970] el0_svc+0x78/0x1d0 [ 82.175195][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.175988][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.176856][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.178546][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.179610][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.181139][ T4970] Call trace: [ 82.181624][ T4970] dump_backtrace+0x0/0x458 [ 82.182304][ T4970] show_stack+0x2c/0x3c [ 82.182923][ T4970] __dump_stack+0x30/0x40 [ 82.183632][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.184362][ T4970] dump_stack+0x1c/0x5c [ 82.185021][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.185944][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.186721][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.187470][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.188183][ T4970] inet_sendmsg+0x154/0x284 [ 82.188908][ T4970] __sys_sendto+0x30c/0x420 [ 82.189658][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.190456][ T4970] invoke_syscall+0x98/0x2b0 [ 82.191196][ T4970] el0_svc_common+0x138/0x258 [ 82.191954][ T4970] do_el0_svc+0x58/0x13c [ 82.192632][ T4970] el0_svc+0x78/0x1d0 [ 82.193217][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.193949][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.195223][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.197019][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.198128][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.199714][ T4970] Call trace: [ 82.200249][ T4970] dump_backtrace+0x0/0x458 [ 82.200974][ T4970] show_stack+0x2c/0x3c [ 82.201613][ T4970] __dump_stack+0x30/0x40 [ 82.202329][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.203065][ T4970] dump_stack+0x1c/0x5c [ 82.203748][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.204629][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.205424][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.206219][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.206951][ T4970] inet_sendmsg+0x154/0x284 [ 82.207696][ T4970] __sys_sendto+0x30c/0x420 [ 82.208435][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.209193][ T4970] invoke_syscall+0x98/0x2b0 [ 82.209920][ T4970] el0_svc_common+0x138/0x258 [ 82.210700][ T4970] do_el0_svc+0x58/0x13c [ 82.211411][ T4970] el0_svc+0x78/0x1d0 [ 82.212037][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.212823][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.213764][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.215521][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.216590][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.218199][ T4970] Call trace: [ 82.218696][ T4970] dump_backtrace+0x0/0x458 [ 82.219372][ T4970] show_stack+0x2c/0x3c [ 82.220072][ T4970] __dump_stack+0x30/0x40 [ 82.220779][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.221519][ T4970] dump_stack+0x1c/0x5c [ 82.222187][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.223021][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.223763][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.224494][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.225179][ T4970] inet_sendmsg+0x154/0x284 [ 82.225828][ T4970] __sys_sendto+0x30c/0x420 [ 82.226466][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.227239][ T4970] invoke_syscall+0x98/0x2b0 [ 82.227955][ T4970] el0_svc_common+0x138/0x258 [ 82.228701][ T4970] do_el0_svc+0x58/0x13c [ 82.229394][ T4970] el0_svc+0x78/0x1d0 [ 82.230044][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.230873][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.231835][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.233590][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.234713][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.236315][ T4970] Call trace: [ 82.236834][ T4970] dump_backtrace+0x0/0x458 [ 82.237555][ T4970] show_stack+0x2c/0x3c [ 82.238240][ T4970] __dump_stack+0x30/0x40 [ 82.238962][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.239730][ T4970] dump_stack+0x1c/0x5c [ 82.240384][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.241275][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.242132][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.242893][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.243630][ T4970] inet_sendmsg+0x154/0x284 [ 82.244364][ T4970] __sys_sendto+0x30c/0x420 [ 82.245123][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.245955][ T4970] invoke_syscall+0x98/0x2b0 [ 82.246690][ T4970] el0_svc_common+0x138/0x258 [ 82.247448][ T4970] do_el0_svc+0x58/0x13c [ 82.248116][ T4970] el0_svc+0x78/0x1d0 [ 82.248755][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.249598][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.250647][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.252427][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.253581][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.255271][ T4970] Call trace: [ 82.255796][ T4970] dump_backtrace+0x0/0x458 [ 82.256552][ T4970] show_stack+0x2c/0x3c [ 82.257258][ T4970] __dump_stack+0x30/0x40 [ 82.257923][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.258593][ T4970] dump_stack+0x1c/0x5c [ 82.259221][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.260127][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.260879][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.261636][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.262380][ T4970] inet_sendmsg+0x154/0x284 [ 82.263098][ T4970] __sys_sendto+0x30c/0x420 [ 82.263803][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.264570][ T4970] invoke_syscall+0x98/0x2b0 [ 82.265289][ T4970] el0_svc_common+0x138/0x258 [ 82.266024][ T4970] do_el0_svc+0x58/0x13c [ 82.266760][ T4970] el0_svc+0x78/0x1d0 [ 82.267454][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.268247][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.269891][ T4970] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.271817][ T4970] CPU: 0 PID: 4970 Comm: syz.0.31 Not tainted syzkaller #0 [ 82.273003][ T4970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.274576][ T4970] Call trace: [ 82.275119][ T4970] dump_backtrace+0x0/0x458 [ 82.275852][ T4970] show_stack+0x2c/0x3c [ 82.276474][ T4970] __dump_stack+0x30/0x40 [ 82.277193][ T4970] dump_stack_lvl+0xf4/0x15c [ 82.277909][ T4970] dump_stack+0x1c/0x5c [ 82.278521][ T4970] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.279401][ T4970] dccp_xmit_packet+0x298/0x448 [ 82.280170][ T4970] dccp_write_xmit+0x118/0x1d0 [ 82.280903][ T4970] dccp_sendmsg+0x550/0x8b8 [ 82.281601][ T4970] inet_sendmsg+0x154/0x284 [ 82.282300][ T4970] __sys_sendto+0x30c/0x420 [ 82.283046][ T4970] __arm64_sys_sendto+0xd8/0xf8 [ 82.283868][ T4970] invoke_syscall+0x98/0x2b0 [ 82.284629][ T4970] el0_svc_common+0x138/0x258 [ 82.285361][ T4970] do_el0_svc+0x58/0x13c [ 82.286053][ T4970] el0_svc+0x78/0x1d0 [ 82.286676][ T4970] el0t_64_sync_handler+0xcc/0xe4 [ 82.287434][ T4970] el0t_64_sync+0x1a0/0x1a4 [ 82.307104][ T372] bond0 (unregistering): Released all slaves [ 82.315367][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.316974][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.317936][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.319345][ T4972] Call trace: [ 82.319844][ T4972] dump_backtrace+0x0/0x458 [ 82.320502][ T4972] show_stack+0x2c/0x3c [ 82.321097][ T4972] __dump_stack+0x30/0x40 [ 82.321721][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.322441][ T4972] dump_stack+0x1c/0x5c [ 82.323038][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.323807][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.324538][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.325252][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.325911][ T4972] inet_sendmsg+0x154/0x284 [ 82.326567][ T4972] __sys_sendto+0x30c/0x420 [ 82.327213][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.327921][ T4972] invoke_syscall+0x98/0x2b0 [ 82.328596][ T4972] el0_svc_common+0x138/0x258 [ 82.329275][ T4972] do_el0_svc+0x58/0x13c [ 82.329926][ T4972] el0_svc+0x78/0x1d0 [ 82.330573][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.331391][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.333582][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.335027][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.335993][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.337491][ T4972] Call trace: [ 82.338009][ T4972] dump_backtrace+0x0/0x458 [ 82.338705][ T4972] show_stack+0x2c/0x3c [ 82.339412][ T4972] __dump_stack+0x30/0x40 [ 82.340086][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.340801][ T4972] dump_stack+0x1c/0x5c [ 82.341437][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.342276][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.342996][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.343703][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.344392][ T4972] inet_sendmsg+0x154/0x284 [ 82.345136][ T4972] __sys_sendto+0x30c/0x420 [ 82.345885][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.346664][ T4972] invoke_syscall+0x98/0x2b0 [ 82.347469][ T4972] el0_svc_common+0x138/0x258 [ 82.348255][ T4972] do_el0_svc+0x58/0x13c [ 82.348950][ T4972] el0_svc+0x78/0x1d0 [ 82.349646][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.350464][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.353097][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.354954][ T4972] CPU: 0 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.356104][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.357669][ T4972] Call trace: [ 82.358154][ T4972] dump_backtrace+0x0/0x458 [ 82.358868][ T4972] show_stack+0x2c/0x3c [ 82.359502][ T4972] __dump_stack+0x30/0x40 [ 82.360202][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.360905][ T4972] dump_stack+0x1c/0x5c [ 82.361546][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.362428][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.363216][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.363953][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.364663][ T4972] inet_sendmsg+0x154/0x284 [ 82.365387][ T4972] __sys_sendto+0x30c/0x420 [ 82.366104][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.366915][ T4972] invoke_syscall+0x98/0x2b0 [ 82.367686][ T4972] el0_svc_common+0x138/0x258 [ 82.368439][ T4972] do_el0_svc+0x58/0x13c [ 82.369137][ T4972] el0_svc+0x78/0x1d0 [ 82.369790][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.370577][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.372060][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.373818][ T4972] CPU: 0 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.374865][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.376295][ T4972] Call trace: [ 82.376781][ T4972] dump_backtrace+0x0/0x458 [ 82.377463][ T4972] show_stack+0x2c/0x3c [ 82.378193][ T4972] __dump_stack+0x30/0x40 [ 82.378879][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.379612][ T4972] dump_stack+0x1c/0x5c [ 82.380240][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.381107][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.381888][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.382673][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.383397][ T4972] inet_sendmsg+0x154/0x284 [ 82.384128][ T4972] __sys_sendto+0x30c/0x420 [ 82.384870][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.385709][ T4972] invoke_syscall+0x98/0x2b0 [ 82.386537][ T4972] el0_svc_common+0x138/0x258 [ 82.387263][ T4972] do_el0_svc+0x58/0x13c [ 82.387923][ T4972] el0_svc+0x78/0x1d0 [ 82.388554][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.389409][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.390352][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.392178][ T4972] CPU: 0 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.393312][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.394898][ T4972] Call trace: [ 82.395417][ T4972] dump_backtrace+0x0/0x458 [ 82.396165][ T4972] show_stack+0x2c/0x3c [ 82.396845][ T4972] __dump_stack+0x30/0x40 [ 82.397544][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.398300][ T4972] dump_stack+0x1c/0x5c [ 82.398963][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.399825][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.400563][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.401289][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.402016][ T4972] inet_sendmsg+0x154/0x284 [ 82.402681][ T4972] __sys_sendto+0x30c/0x420 [ 82.403331][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.404039][ T4972] invoke_syscall+0x98/0x2b0 [ 82.404763][ T4972] el0_svc_common+0x138/0x258 [ 82.405503][ T4972] do_el0_svc+0x58/0x13c [ 82.406164][ T4972] el0_svc+0x78/0x1d0 [ 82.406804][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.407671][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.409643][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.411443][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.412501][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.414182][ T4972] Call trace: [ 82.414766][ T4972] dump_backtrace+0x0/0x458 [ 82.415511][ T4972] show_stack+0x2c/0x3c [ 82.416128][ T4972] __dump_stack+0x30/0x40 [ 82.416742][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.417408][ T4972] dump_stack+0x1c/0x5c [ 82.418013][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.418773][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.419489][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.420160][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.420832][ T4972] inet_sendmsg+0x154/0x284 [ 82.421510][ T4972] __sys_sendto+0x30c/0x420 [ 82.422152][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.422861][ T4972] invoke_syscall+0x98/0x2b0 [ 82.423540][ T4972] el0_svc_common+0x138/0x258 [ 82.424223][ T4972] do_el0_svc+0x58/0x13c [ 82.424818][ T4972] el0_svc+0x78/0x1d0 [ 82.425379][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.426110][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.428214][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.429867][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.430873][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.432372][ T4972] Call trace: [ 82.432880][ T4972] dump_backtrace+0x0/0x458 [ 82.433536][ T4972] show_stack+0x2c/0x3c [ 82.434184][ T4972] __dump_stack+0x30/0x40 [ 82.434902][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.435619][ T4972] dump_stack+0x1c/0x5c [ 82.436277][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.437145][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.437865][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.438678][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.439382][ T4972] inet_sendmsg+0x154/0x284 [ 82.440129][ T4972] __sys_sendto+0x30c/0x420 [ 82.440861][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.441643][ T4972] invoke_syscall+0x98/0x2b0 [ 82.442368][ T4972] el0_svc_common+0x138/0x258 [ 82.443167][ T4972] do_el0_svc+0x58/0x13c [ 82.443846][ T4972] el0_svc+0x78/0x1d0 [ 82.444457][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.445182][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.446418][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.447985][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.449005][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.450337][ T4972] Call trace: [ 82.450780][ T4972] dump_backtrace+0x0/0x458 [ 82.451403][ T4972] show_stack+0x2c/0x3c [ 82.452072][ T4972] __dump_stack+0x30/0x40 [ 82.452782][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.453531][ T4972] dump_stack+0x1c/0x5c [ 82.454157][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.455067][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.455883][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.456649][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.457355][ T4972] inet_sendmsg+0x154/0x284 [ 82.458161][ T4972] __sys_sendto+0x30c/0x420 [ 82.459016][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.459833][ T4972] invoke_syscall+0x98/0x2b0 [ 82.460621][ T4972] el0_svc_common+0x138/0x258 [ 82.461424][ T4972] do_el0_svc+0x58/0x13c [ 82.462168][ T4972] el0_svc+0x78/0x1d0 [ 82.462816][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.463702][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.464738][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.466527][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.467676][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.469163][ T4972] Call trace: [ 82.469647][ T4972] dump_backtrace+0x0/0x458 [ 82.470303][ T4972] show_stack+0x2c/0x3c [ 82.470944][ T4972] __dump_stack+0x30/0x40 [ 82.471662][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.472389][ T4972] dump_stack+0x1c/0x5c [ 82.473085][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.473998][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.474790][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.475600][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.476339][ T4972] inet_sendmsg+0x154/0x284 [ 82.477080][ T4972] __sys_sendto+0x30c/0x420 [ 82.477822][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.478634][ T4972] invoke_syscall+0x98/0x2b0 [ 82.479394][ T4972] el0_svc_common+0x138/0x258 [ 82.480174][ T4972] do_el0_svc+0x58/0x13c [ 82.480868][ T4972] el0_svc+0x78/0x1d0 [ 82.481543][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.482394][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.484150][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.485778][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.486829][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.488218][ T4972] Call trace: [ 82.488702][ T4972] dump_backtrace+0x0/0x458 [ 82.489372][ T4972] show_stack+0x2c/0x3c [ 82.489984][ T4972] __dump_stack+0x30/0x40 [ 82.490634][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.491362][ T4972] dump_stack+0x1c/0x5c [ 82.492035][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.492908][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.493769][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.494587][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.495274][ T4972] inet_sendmsg+0x154/0x284 [ 82.495987][ T4972] __sys_sendto+0x30c/0x420 [ 82.496698][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.497486][ T4972] invoke_syscall+0x98/0x2b0 [ 82.498259][ T4972] el0_svc_common+0x138/0x258 [ 82.499044][ T4972] do_el0_svc+0x58/0x13c [ 82.499767][ T4972] el0_svc+0x78/0x1d0 [ 82.500398][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.501185][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.502156][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.503892][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.504984][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.506610][ T4972] Call trace: [ 82.507101][ T4972] dump_backtrace+0x0/0x458 [ 82.507806][ T4972] show_stack+0x2c/0x3c [ 82.508413][ T4972] __dump_stack+0x30/0x40 [ 82.509182][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.509859][ T4972] dump_stack+0x1c/0x5c [ 82.510508][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.511393][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.512103][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.512856][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.513589][ T4972] inet_sendmsg+0x154/0x284 [ 82.514284][ T4972] __sys_sendto+0x30c/0x420 [ 82.514936][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.515628][ T4972] invoke_syscall+0x98/0x2b0 [ 82.516302][ T4972] el0_svc_common+0x138/0x258 [ 82.517044][ T4972] do_el0_svc+0x58/0x13c [ 82.517670][ T4972] el0_svc+0x78/0x1d0 [ 82.518315][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.519198][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.520099][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.521740][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.522872][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.524460][ T4972] Call trace: [ 82.524953][ T4972] dump_backtrace+0x0/0x458 [ 82.525609][ T4972] show_stack+0x2c/0x3c [ 82.526195][ T4972] __dump_stack+0x30/0x40 [ 82.526876][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.527615][ T4972] dump_stack+0x1c/0x5c [ 82.528254][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.529130][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.529920][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.530747][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.531509][ T4972] inet_sendmsg+0x154/0x284 [ 82.532211][ T4972] __sys_sendto+0x30c/0x420 [ 82.532953][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.533688][ T4972] invoke_syscall+0x98/0x2b0 [ 82.534424][ T4972] el0_svc_common+0x138/0x258 [ 82.535183][ T4972] do_el0_svc+0x58/0x13c [ 82.535821][ T4972] el0_svc+0x78/0x1d0 [ 82.536378][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.537141][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.538041][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.539683][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.540731][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.542221][ T4972] Call trace: [ 82.542705][ T4972] dump_backtrace+0x0/0x458 [ 82.543355][ T4972] show_stack+0x2c/0x3c [ 82.543936][ T4972] __dump_stack+0x30/0x40 [ 82.544530][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.545157][ T4972] dump_stack+0x1c/0x5c [ 82.545756][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.546574][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.547385][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.548151][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.548872][ T4972] inet_sendmsg+0x154/0x284 [ 82.549628][ T4972] __sys_sendto+0x30c/0x420 [ 82.550342][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.551163][ T4972] invoke_syscall+0x98/0x2b0 [ 82.551882][ T4972] el0_svc_common+0x138/0x258 [ 82.552657][ T4972] do_el0_svc+0x58/0x13c [ 82.553343][ T4972] el0_svc+0x78/0x1d0 [ 82.554010][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.554807][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.555751][ T4972] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.557616][ T4972] CPU: 1 PID: 4972 Comm: syz.0.32 Not tainted syzkaller #0 [ 82.558677][ T4972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.560278][ T4972] Call trace: [ 82.560769][ T4972] dump_backtrace+0x0/0x458 [ 82.561454][ T4972] show_stack+0x2c/0x3c [ 82.562099][ T4972] __dump_stack+0x30/0x40 [ 82.562822][ T4972] dump_stack_lvl+0xf4/0x15c [ 82.563515][ T4972] dump_stack+0x1c/0x5c [ 82.564214][ T4972] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.565091][ T4972] dccp_xmit_packet+0x298/0x448 [ 82.565871][ T4972] dccp_write_xmit+0x118/0x1d0 [ 82.566613][ T4972] dccp_sendmsg+0x550/0x8b8 [ 82.567306][ T4972] inet_sendmsg+0x154/0x284 [ 82.568004][ T4972] __sys_sendto+0x30c/0x420 [ 82.568750][ T4972] __arm64_sys_sendto+0xd8/0xf8 [ 82.569529][ T4972] invoke_syscall+0x98/0x2b0 [ 82.570283][ T4972] el0_svc_common+0x138/0x258 [ 82.571056][ T4972] do_el0_svc+0x58/0x13c [ 82.571747][ T4972] el0_svc+0x78/0x1d0 [ 82.572434][ T4972] el0t_64_sync_handler+0xcc/0xe4 [ 82.573261][ T4972] el0t_64_sync+0x1a0/0x1a4 [ 82.592985][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.594799][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.595950][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.597486][ T4974] Call trace: [ 82.597968][ T4974] dump_backtrace+0x0/0x458 [ 82.598657][ T4974] show_stack+0x2c/0x3c [ 82.599335][ T4974] __dump_stack+0x30/0x40 [ 82.600000][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.600697][ T4974] dump_stack+0x1c/0x5c [ 82.601281][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.602096][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.602808][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.603497][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.604101][ T4974] inet_sendmsg+0x154/0x284 [ 82.604751][ T4974] __sys_sendto+0x30c/0x420 [ 82.605424][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.606107][ T4974] invoke_syscall+0x98/0x2b0 [ 82.606735][ T4974] el0_svc_common+0x138/0x258 [ 82.607402][ T4974] do_el0_svc+0x58/0x13c [ 82.608025][ T4974] el0_svc+0x78/0x1d0 [ 82.608592][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.609300][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.610664][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.612437][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.613533][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.615013][ T4974] Call trace: [ 82.615490][ T4974] dump_backtrace+0x0/0x458 [ 82.616144][ T4974] show_stack+0x2c/0x3c [ 82.616772][ T4974] __dump_stack+0x30/0x40 [ 82.617427][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.618120][ T4974] dump_stack+0x1c/0x5c [ 82.618749][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.619542][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.620227][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.620932][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.621627][ T4974] inet_sendmsg+0x154/0x284 [ 82.622331][ T4974] __sys_sendto+0x30c/0x420 [ 82.623022][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.623756][ T4974] invoke_syscall+0x98/0x2b0 [ 82.624445][ T4974] el0_svc_common+0x138/0x258 [ 82.625233][ T4974] do_el0_svc+0x58/0x13c [ 82.625933][ T4974] el0_svc+0x78/0x1d0 [ 82.626530][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.627283][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.628244][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.629905][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.631027][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.632784][ T4974] Call trace: [ 82.633363][ T4974] dump_backtrace+0x0/0x458 [ 82.634076][ T4974] show_stack+0x2c/0x3c [ 82.634745][ T4974] __dump_stack+0x30/0x40 [ 82.635418][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.636123][ T4974] dump_stack+0x1c/0x5c [ 82.636779][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.637694][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.638480][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.639227][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.639934][ T4974] inet_sendmsg+0x154/0x284 [ 82.640630][ T4974] __sys_sendto+0x30c/0x420 [ 82.641350][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.642131][ T4974] invoke_syscall+0x98/0x2b0 [ 82.642895][ T4974] el0_svc_common+0x138/0x258 [ 82.643654][ T4974] do_el0_svc+0x58/0x13c [ 82.644347][ T4974] el0_svc+0x78/0x1d0 [ 82.644968][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.645770][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.646849][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.648652][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.649857][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.651539][ T4974] Call trace: [ 82.652096][ T4974] dump_backtrace+0x0/0x458 [ 82.652825][ T4974] show_stack+0x2c/0x3c [ 82.653477][ T4974] __dump_stack+0x30/0x40 [ 82.654109][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.654823][ T4974] dump_stack+0x1c/0x5c [ 82.655514][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.656448][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.657244][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.658037][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.658767][ T4974] inet_sendmsg+0x154/0x284 [ 82.659459][ T4974] __sys_sendto+0x30c/0x420 [ 82.660216][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.660992][ T4974] invoke_syscall+0x98/0x2b0 [ 82.661694][ T4974] el0_svc_common+0x138/0x258 [ 82.662438][ T4974] do_el0_svc+0x58/0x13c [ 82.663008][ T4974] el0_svc+0x78/0x1d0 [ 82.663559][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.664408][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.665579][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.667295][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.668349][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.669808][ T4974] Call trace: [ 82.670304][ T4974] dump_backtrace+0x0/0x458 [ 82.670950][ T4974] show_stack+0x2c/0x3c [ 82.671519][ T4974] __dump_stack+0x30/0x40 [ 82.672247][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.673007][ T4974] dump_stack+0x1c/0x5c [ 82.673667][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.674465][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.675205][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.675903][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.676735][ T4974] inet_sendmsg+0x154/0x284 [ 82.677504][ T4974] __sys_sendto+0x30c/0x420 [ 82.678240][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.679020][ T4974] invoke_syscall+0x98/0x2b0 [ 82.679689][ T4974] el0_svc_common+0x138/0x258 [ 82.680385][ T4974] do_el0_svc+0x58/0x13c [ 82.681013][ T4974] el0_svc+0x78/0x1d0 [ 82.681631][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.682517][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.683470][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.685090][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.686274][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.687797][ T4974] Call trace: [ 82.688260][ T4974] dump_backtrace+0x0/0x458 [ 82.688917][ T4974] show_stack+0x2c/0x3c [ 82.689522][ T4974] __dump_stack+0x30/0x40 [ 82.690159][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.690936][ T4974] dump_stack+0x1c/0x5c [ 82.691598][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.692471][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.693229][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.694004][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.694740][ T4974] inet_sendmsg+0x154/0x284 [ 82.695477][ T4974] __sys_sendto+0x30c/0x420 [ 82.696257][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.697019][ T4974] invoke_syscall+0x98/0x2b0 [ 82.697789][ T4974] el0_svc_common+0x138/0x258 [ 82.698592][ T4974] do_el0_svc+0x58/0x13c [ 82.699331][ T4974] el0_svc+0x78/0x1d0 [ 82.700010][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.700854][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.701914][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.703589][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.704656][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.706095][ T4974] Call trace: [ 82.706606][ T4974] dump_backtrace+0x0/0x458 [ 82.707273][ T4974] show_stack+0x2c/0x3c [ 82.707905][ T4974] __dump_stack+0x30/0x40 [ 82.708599][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.709391][ T4974] dump_stack+0x1c/0x5c [ 82.710091][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.710931][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.711682][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.712424][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.713187][ T4974] inet_sendmsg+0x154/0x284 [ 82.713850][ T4974] __sys_sendto+0x30c/0x420 [ 82.714563][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.715249][ T4974] invoke_syscall+0x98/0x2b0 [ 82.715967][ T4974] el0_svc_common+0x138/0x258 [ 82.716640][ T4974] do_el0_svc+0x58/0x13c [ 82.717313][ T4974] el0_svc+0x78/0x1d0 [ 82.717913][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.718706][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.719710][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.721338][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.722436][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.723970][ T4974] Call trace: [ 82.724473][ T4974] dump_backtrace+0x0/0x458 [ 82.725130][ T4974] show_stack+0x2c/0x3c [ 82.725821][ T4974] __dump_stack+0x30/0x40 [ 82.726542][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.727278][ T4974] dump_stack+0x1c/0x5c [ 82.727948][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.728819][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.729618][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.730391][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.731145][ T4974] inet_sendmsg+0x154/0x284 [ 82.731928][ T4974] __sys_sendto+0x30c/0x420 [ 82.732650][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.733432][ T4974] invoke_syscall+0x98/0x2b0 [ 82.734152][ T4974] el0_svc_common+0x138/0x258 [ 82.734920][ T4974] do_el0_svc+0x58/0x13c [ 82.735600][ T4974] el0_svc+0x78/0x1d0 [ 82.736206][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.736986][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.737955][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.739724][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.740828][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.742441][ T4974] Call trace: [ 82.742975][ T4974] dump_backtrace+0x0/0x458 [ 82.743710][ T4974] show_stack+0x2c/0x3c [ 82.744406][ T4974] __dump_stack+0x30/0x40 [ 82.745133][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.745894][ T4974] dump_stack+0x1c/0x5c [ 82.746575][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.747480][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.748297][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.749118][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.749868][ T4974] inet_sendmsg+0x154/0x284 [ 82.750644][ T4974] __sys_sendto+0x30c/0x420 [ 82.751380][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.752203][ T4974] invoke_syscall+0x98/0x2b0 [ 82.752962][ T4974] el0_svc_common+0x138/0x258 [ 82.753713][ T4974] do_el0_svc+0x58/0x13c [ 82.754440][ T4974] el0_svc+0x78/0x1d0 [ 82.755108][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.755942][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.757076][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.758806][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.759971][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.761636][ T4974] Call trace: [ 82.762166][ T4974] dump_backtrace+0x0/0x458 [ 82.762827][ T4974] show_stack+0x2c/0x3c [ 82.763407][ T4974] __dump_stack+0x30/0x40 [ 82.763992][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.764621][ T4974] dump_stack+0x1c/0x5c [ 82.765221][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.766125][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.766882][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.767566][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.768272][ T4974] inet_sendmsg+0x154/0x284 [ 82.768946][ T4974] __sys_sendto+0x30c/0x420 [ 82.769588][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.770292][ T4974] invoke_syscall+0x98/0x2b0 [ 82.770987][ T4974] el0_svc_common+0x138/0x258 [ 82.771703][ T4974] do_el0_svc+0x58/0x13c [ 82.772351][ T4974] el0_svc+0x78/0x1d0 [ 82.772909][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.773625][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.774851][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.776706][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.777882][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.779480][ T4974] Call trace: [ 82.779992][ T4974] dump_backtrace+0x0/0x458 [ 82.780683][ T4974] show_stack+0x2c/0x3c [ 82.781282][ T4974] __dump_stack+0x30/0x40 [ 82.781912][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.782603][ T4974] dump_stack+0x1c/0x5c [ 82.783246][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.784059][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.784803][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.785566][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.786251][ T4974] inet_sendmsg+0x154/0x284 [ 82.786950][ T4974] __sys_sendto+0x30c/0x420 [ 82.787678][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.788432][ T4974] invoke_syscall+0x98/0x2b0 [ 82.789127][ T4974] el0_svc_common+0x138/0x258 [ 82.789853][ T4974] do_el0_svc+0x58/0x13c [ 82.790562][ T4974] el0_svc+0x78/0x1d0 [ 82.791227][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.791978][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.793043][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.794841][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.796006][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.797651][ T4974] Call trace: [ 82.798144][ T4974] dump_backtrace+0x0/0x458 [ 82.798870][ T4974] show_stack+0x2c/0x3c [ 82.799535][ T4974] __dump_stack+0x30/0x40 [ 82.800221][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.800954][ T4974] dump_stack+0x1c/0x5c [ 82.801642][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.802457][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.803160][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.803902][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.804651][ T4974] inet_sendmsg+0x154/0x284 [ 82.805314][ T4974] __sys_sendto+0x30c/0x420 [ 82.805959][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.806696][ T4974] invoke_syscall+0x98/0x2b0 [ 82.807385][ T4974] el0_svc_common+0x138/0x258 [ 82.808102][ T4974] do_el0_svc+0x58/0x13c [ 82.808761][ T4974] el0_svc+0x78/0x1d0 [ 82.809330][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.810076][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.811007][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.812666][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.813619][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.814996][ T4974] Call trace: [ 82.815478][ T4974] dump_backtrace+0x0/0x458 [ 82.816128][ T4974] show_stack+0x2c/0x3c [ 82.816702][ T4974] __dump_stack+0x30/0x40 [ 82.817324][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.817999][ T4974] dump_stack+0x1c/0x5c [ 82.818598][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.819414][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.820188][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.820931][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.821638][ T4974] inet_sendmsg+0x154/0x284 [ 82.822392][ T4974] __sys_sendto+0x30c/0x420 [ 82.823166][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.823995][ T4974] invoke_syscall+0x98/0x2b0 [ 82.824735][ T4974] el0_svc_common+0x138/0x258 [ 82.825544][ T4974] do_el0_svc+0x58/0x13c [ 82.826225][ T4974] el0_svc+0x78/0x1d0 [ 82.826854][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.827668][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.828599][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.830474][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.831636][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.833236][ T4974] Call trace: [ 82.833737][ T4974] dump_backtrace+0x0/0x458 [ 82.834435][ T4974] show_stack+0x2c/0x3c [ 82.835057][ T4974] __dump_stack+0x30/0x40 [ 82.835735][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.836493][ T4974] dump_stack+0x1c/0x5c [ 82.837187][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.838036][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.838788][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.839546][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.840220][ T4974] inet_sendmsg+0x154/0x284 [ 82.840988][ T4974] __sys_sendto+0x30c/0x420 [ 82.841793][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.842627][ T4974] invoke_syscall+0x98/0x2b0 [ 82.843389][ T4974] el0_svc_common+0x138/0x258 [ 82.844193][ T4974] do_el0_svc+0x58/0x13c [ 82.844940][ T4974] el0_svc+0x78/0x1d0 [ 82.845606][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.846456][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.847350][ T4974] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.848900][ T4974] CPU: 1 PID: 4974 Comm: syz.0.33 Not tainted syzkaller #0 [ 82.849933][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.851586][ T4974] Call trace: [ 82.852117][ T4974] dump_backtrace+0x0/0x458 [ 82.852877][ T4974] show_stack+0x2c/0x3c [ 82.853576][ T4974] __dump_stack+0x30/0x40 [ 82.854273][ T4974] dump_stack_lvl+0xf4/0x15c [ 82.854994][ T4974] dump_stack+0x1c/0x5c [ 82.855667][ T4974] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.856522][ T4974] dccp_xmit_packet+0x298/0x448 [ 82.857338][ T4974] dccp_write_xmit+0x118/0x1d0 [ 82.858085][ T4974] dccp_sendmsg+0x550/0x8b8 [ 82.858840][ T4974] inet_sendmsg+0x154/0x284 [ 82.859562][ T4974] __sys_sendto+0x30c/0x420 [ 82.860316][ T4974] __arm64_sys_sendto+0xd8/0xf8 [ 82.861084][ T4974] invoke_syscall+0x98/0x2b0 [ 82.861798][ T4974] el0_svc_common+0x138/0x258 [ 82.862530][ T4974] do_el0_svc+0x58/0x13c [ 82.863185][ T4974] el0_svc+0x78/0x1d0 [ 82.863845][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 82.864684][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 82.895460][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.897257][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 82.898278][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.899743][ T4978] Call trace: [ 82.900253][ T4978] dump_backtrace+0x0/0x458 [ 82.900983][ T4978] show_stack+0x2c/0x3c [ 82.901645][ T4978] __dump_stack+0x30/0x40 [ 82.902366][ T4978] dump_stack_lvl+0xf4/0x15c [ 82.903124][ T4978] dump_stack+0x1c/0x5c [ 82.903796][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.904687][ T4978] dccp_xmit_packet+0x298/0x448 [ 82.905478][ T4978] dccp_write_xmit+0x118/0x1d0 [ 82.906258][ T4978] dccp_sendmsg+0x550/0x8b8 [ 82.907028][ T4978] inet_sendmsg+0x154/0x284 [ 82.907801][ T4978] __sys_sendto+0x30c/0x420 [ 82.908578][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 82.909410][ T4978] invoke_syscall+0x98/0x2b0 [ 82.910187][ T4978] el0_svc_common+0x138/0x258 [ 82.910983][ T4978] do_el0_svc+0x58/0x13c [ 82.911679][ T4978] el0_svc+0x78/0x1d0 [ 82.912321][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 82.913195][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 82.914682][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.916307][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 82.917510][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.919104][ T4978] Call trace: [ 82.919626][ T4978] dump_backtrace+0x0/0x458 [ 82.920313][ T4978] show_stack+0x2c/0x3c [ 82.921004][ T4978] __dump_stack+0x30/0x40 [ 82.921724][ T4978] dump_stack_lvl+0xf4/0x15c [ 82.922507][ T4978] dump_stack+0x1c/0x5c [ 82.923195][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.924098][ T4978] dccp_xmit_packet+0x298/0x448 [ 82.924901][ T4978] dccp_write_xmit+0x118/0x1d0 [ 82.925710][ T4978] dccp_sendmsg+0x550/0x8b8 [ 82.926494][ T4978] inet_sendmsg+0x154/0x284 [ 82.927275][ T4978] __sys_sendto+0x30c/0x420 [ 82.928054][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 82.928885][ T4978] invoke_syscall+0x98/0x2b0 [ 82.929639][ T4978] el0_svc_common+0x138/0x258 [ 82.930374][ T4978] do_el0_svc+0x58/0x13c [ 82.931048][ T4978] el0_svc+0x78/0x1d0 [ 82.931741][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 82.932582][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 82.933599][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.935485][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 82.936630][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.938262][ T4978] Call trace: [ 82.938766][ T4978] dump_backtrace+0x0/0x458 [ 82.939475][ T4978] show_stack+0x2c/0x3c [ 82.940170][ T4978] __dump_stack+0x30/0x40 [ 82.940798][ T4978] dump_stack_lvl+0xf4/0x15c [ 82.941449][ T4978] dump_stack+0x1c/0x5c [ 82.942157][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.942995][ T4978] dccp_xmit_packet+0x298/0x448 [ 82.943732][ T4978] dccp_write_xmit+0x118/0x1d0 [ 82.944443][ T4978] dccp_sendmsg+0x550/0x8b8 [ 82.945136][ T4978] inet_sendmsg+0x154/0x284 [ 82.945832][ T4978] __sys_sendto+0x30c/0x420 [ 82.946502][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 82.947267][ T4978] invoke_syscall+0x98/0x2b0 [ 82.947959][ T4978] el0_svc_common+0x138/0x258 [ 82.948691][ T4978] do_el0_svc+0x58/0x13c [ 82.949440][ T4978] el0_svc+0x78/0x1d0 [ 82.950095][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 82.950866][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 82.952303][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.953995][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 82.955138][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.956701][ T4978] Call trace: [ 82.957188][ T4978] dump_backtrace+0x0/0x458 [ 82.957887][ T4978] show_stack+0x2c/0x3c [ 82.958513][ T4978] __dump_stack+0x30/0x40 [ 82.959179][ T4978] dump_stack_lvl+0xf4/0x15c [ 82.959830][ T4978] dump_stack+0x1c/0x5c [ 82.960456][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.961224][ T4978] dccp_xmit_packet+0x298/0x448 [ 82.961918][ T4978] dccp_write_xmit+0x118/0x1d0 [ 82.962606][ T4978] dccp_sendmsg+0x550/0x8b8 [ 82.963306][ T4978] inet_sendmsg+0x154/0x284 [ 82.964007][ T4978] __sys_sendto+0x30c/0x420 [ 82.964656][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 82.965427][ T4978] invoke_syscall+0x98/0x2b0 [ 82.966188][ T4978] el0_svc_common+0x138/0x258 [ 82.966905][ T4978] do_el0_svc+0x58/0x13c [ 82.967592][ T4978] el0_svc+0x78/0x1d0 [ 82.968217][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 82.969025][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 82.970009][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.971738][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 82.972920][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.974529][ T4978] Call trace: [ 82.975067][ T4978] dump_backtrace+0x0/0x458 [ 82.975751][ T4978] show_stack+0x2c/0x3c [ 82.976400][ T4978] __dump_stack+0x30/0x40 [ 82.977106][ T4978] dump_stack_lvl+0xf4/0x15c [ 82.977780][ T4978] dump_stack+0x1c/0x5c [ 82.978407][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.979269][ T4978] dccp_xmit_packet+0x298/0x448 [ 82.980058][ T4978] dccp_write_xmit+0x118/0x1d0 [ 82.980752][ T4978] dccp_sendmsg+0x550/0x8b8 [ 82.981386][ T4978] inet_sendmsg+0x154/0x284 [ 82.982017][ T4978] __sys_sendto+0x30c/0x420 [ 82.982653][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 82.983339][ T4978] invoke_syscall+0x98/0x2b0 [ 82.983992][ T4978] el0_svc_common+0x138/0x258 [ 82.984696][ T4978] do_el0_svc+0x58/0x13c [ 82.985291][ T4978] el0_svc+0x78/0x1d0 [ 82.985966][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 82.986790][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 82.987733][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 82.989405][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 82.990556][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.992287][ T4978] Call trace: [ 82.992841][ T4978] dump_backtrace+0x0/0x458 [ 82.993607][ T4978] show_stack+0x2c/0x3c [ 82.994316][ T4978] __dump_stack+0x30/0x40 [ 82.995005][ T4978] dump_stack_lvl+0xf4/0x15c [ 82.995695][ T4978] dump_stack+0x1c/0x5c [ 82.996359][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 82.997264][ T4978] dccp_xmit_packet+0x298/0x448 [ 82.998031][ T4978] dccp_write_xmit+0x118/0x1d0 [ 82.998789][ T4978] dccp_sendmsg+0x550/0x8b8 [ 82.999499][ T4978] inet_sendmsg+0x154/0x284 [ 83.000235][ T4978] __sys_sendto+0x30c/0x420 [ 83.000948][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.001673][ T4978] invoke_syscall+0x98/0x2b0 [ 83.002467][ T4978] el0_svc_common+0x138/0x258 [ 83.003252][ T4978] do_el0_svc+0x58/0x13c [ 83.003941][ T4978] el0_svc+0x78/0x1d0 [ 83.004597][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.005409][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.006369][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.008075][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 83.009208][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.010639][ T4978] Call trace: [ 83.011131][ T4978] dump_backtrace+0x0/0x458 [ 83.011805][ T4978] show_stack+0x2c/0x3c [ 83.012462][ T4978] __dump_stack+0x30/0x40 [ 83.013138][ T4978] dump_stack_lvl+0xf4/0x15c [ 83.013888][ T4978] dump_stack+0x1c/0x5c [ 83.014511][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.015380][ T4978] dccp_xmit_packet+0x298/0x448 [ 83.016142][ T4978] dccp_write_xmit+0x118/0x1d0 [ 83.016852][ T4978] dccp_sendmsg+0x550/0x8b8 [ 83.017588][ T4978] inet_sendmsg+0x154/0x284 [ 83.018345][ T4978] __sys_sendto+0x30c/0x420 [ 83.019090][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.019882][ T4978] invoke_syscall+0x98/0x2b0 [ 83.020636][ T4978] el0_svc_common+0x138/0x258 [ 83.021437][ T4978] do_el0_svc+0x58/0x13c [ 83.022135][ T4978] el0_svc+0x78/0x1d0 [ 83.022800][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.023636][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.024760][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.026481][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 83.027629][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.029212][ T4978] Call trace: [ 83.029705][ T4978] dump_backtrace+0x0/0x458 [ 83.030435][ T4978] show_stack+0x2c/0x3c [ 83.031091][ T4978] __dump_stack+0x30/0x40 [ 83.031786][ T4978] dump_stack_lvl+0xf4/0x15c [ 83.032532][ T4978] dump_stack+0x1c/0x5c [ 83.033170][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.034045][ T4978] dccp_xmit_packet+0x298/0x448 [ 83.034800][ T4978] dccp_write_xmit+0x118/0x1d0 [ 83.035538][ T4978] dccp_sendmsg+0x550/0x8b8 [ 83.036213][ T4978] inet_sendmsg+0x154/0x284 [ 83.036891][ T4978] __sys_sendto+0x30c/0x420 [ 83.037564][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.038322][ T4978] invoke_syscall+0x98/0x2b0 [ 83.039032][ T4978] el0_svc_common+0x138/0x258 [ 83.039763][ T4978] do_el0_svc+0x58/0x13c [ 83.040477][ T4978] el0_svc+0x78/0x1d0 [ 83.041113][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.041904][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.042821][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.044546][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 83.045621][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.047303][ T4978] Call trace: [ 83.047802][ T4978] dump_backtrace+0x0/0x458 [ 83.048502][ T4978] show_stack+0x2c/0x3c [ 83.049161][ T4978] __dump_stack+0x30/0x40 [ 83.049824][ T4978] dump_stack_lvl+0xf4/0x15c [ 83.050515][ T4978] dump_stack+0x1c/0x5c [ 83.051240][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.052145][ T4978] dccp_xmit_packet+0x298/0x448 [ 83.052968][ T4978] dccp_write_xmit+0x118/0x1d0 [ 83.053765][ T4978] dccp_sendmsg+0x550/0x8b8 [ 83.054521][ T4978] inet_sendmsg+0x154/0x284 [ 83.055303][ T4978] __sys_sendto+0x30c/0x420 [ 83.055987][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.056698][ T4978] invoke_syscall+0x98/0x2b0 [ 83.057505][ T4978] el0_svc_common+0x138/0x258 [ 83.058337][ T4978] do_el0_svc+0x58/0x13c [ 83.059046][ T4978] el0_svc+0x78/0x1d0 [ 83.059660][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.060423][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.061201][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.063524][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 83.064636][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.066174][ T4978] Call trace: [ 83.066670][ T4978] dump_backtrace+0x0/0x458 [ 83.067357][ T4978] show_stack+0x2c/0x3c [ 83.068045][ T4978] __dump_stack+0x30/0x40 [ 83.068762][ T4978] dump_stack_lvl+0xf4/0x15c [ 83.069505][ T4978] dump_stack+0x1c/0x5c [ 83.070170][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.071078][ T4978] dccp_xmit_packet+0x298/0x448 [ 83.071824][ T4978] dccp_write_xmit+0x118/0x1d0 [ 83.072582][ T4978] dccp_sendmsg+0x550/0x8b8 [ 83.073337][ T4978] inet_sendmsg+0x154/0x284 [ 83.074054][ T4978] __sys_sendto+0x30c/0x420 [ 83.074827][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.075560][ T4978] invoke_syscall+0x98/0x2b0 [ 83.076316][ T4978] el0_svc_common+0x138/0x258 [ 83.077116][ T4978] do_el0_svc+0x58/0x13c [ 83.077811][ T4978] el0_svc+0x78/0x1d0 [ 83.078426][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.079237][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.080248][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.081906][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 83.082984][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.084438][ T4978] Call trace: [ 83.084954][ T4978] dump_backtrace+0x0/0x458 [ 83.085649][ T4978] show_stack+0x2c/0x3c [ 83.086336][ T4978] __dump_stack+0x30/0x40 [ 83.087012][ T4978] dump_stack_lvl+0xf4/0x15c [ 83.087654][ T4978] dump_stack+0x1c/0x5c [ 83.088293][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.089114][ T4978] dccp_xmit_packet+0x298/0x448 [ 83.089880][ T4978] dccp_write_xmit+0x118/0x1d0 [ 83.090628][ T4978] dccp_sendmsg+0x550/0x8b8 [ 83.091376][ T4978] inet_sendmsg+0x154/0x284 [ 83.092123][ T4978] __sys_sendto+0x30c/0x420 [ 83.092867][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.093624][ T4978] invoke_syscall+0x98/0x2b0 [ 83.094392][ T4978] el0_svc_common+0x138/0x258 [ 83.095138][ T4978] do_el0_svc+0x58/0x13c [ 83.095812][ T4978] el0_svc+0x78/0x1d0 [ 83.096457][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.097287][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.098160][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.099945][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 83.101038][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.102609][ T4978] Call trace: [ 83.103126][ T4978] dump_backtrace+0x0/0x458 [ 83.103818][ T4978] show_stack+0x2c/0x3c [ 83.104515][ T4978] __dump_stack+0x30/0x40 [ 83.105209][ T4978] dump_stack_lvl+0xf4/0x15c [ 83.105978][ T4978] dump_stack+0x1c/0x5c [ 83.106660][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.107555][ T4978] dccp_xmit_packet+0x298/0x448 [ 83.108303][ T4978] dccp_write_xmit+0x118/0x1d0 [ 83.109014][ T4978] dccp_sendmsg+0x550/0x8b8 [ 83.109701][ T4978] inet_sendmsg+0x154/0x284 [ 83.110383][ T4978] __sys_sendto+0x30c/0x420 [ 83.111041][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.111798][ T4978] invoke_syscall+0x98/0x2b0 [ 83.112512][ T4978] el0_svc_common+0x138/0x258 [ 83.113258][ T4978] do_el0_svc+0x58/0x13c [ 83.113933][ T4978] el0_svc+0x78/0x1d0 [ 83.114536][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.115348][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.116280][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.118023][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 83.119116][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.120705][ T4978] Call trace: [ 83.121157][ T4978] dump_backtrace+0x0/0x458 [ 83.121908][ T4978] show_stack+0x2c/0x3c [ 83.122577][ T4978] __dump_stack+0x30/0x40 [ 83.123293][ T4978] dump_stack_lvl+0xf4/0x15c [ 83.124083][ T4978] dump_stack+0x1c/0x5c [ 83.124784][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.125674][ T4978] dccp_xmit_packet+0x298/0x448 [ 83.126387][ T4978] dccp_write_xmit+0x118/0x1d0 [ 83.127197][ T4978] dccp_sendmsg+0x550/0x8b8 [ 83.127877][ T4978] inet_sendmsg+0x154/0x284 [ 83.128609][ T4978] __sys_sendto+0x30c/0x420 [ 83.129332][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.130060][ T4978] invoke_syscall+0x98/0x2b0 [ 83.130776][ T4978] el0_svc_common+0x138/0x258 [ 83.131577][ T4978] do_el0_svc+0x58/0x13c [ 83.132296][ T4978] el0_svc+0x78/0x1d0 [ 83.132995][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.133797][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.134731][ T4978] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.136386][ T4978] CPU: 1 PID: 4978 Comm: syz.0.35 Not tainted syzkaller #0 [ 83.137568][ T4978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.139201][ T4978] Call trace: [ 83.139737][ T4978] dump_backtrace+0x0/0x458 [ 83.140489][ T4978] show_stack+0x2c/0x3c [ 83.141133][ T4978] __dump_stack+0x30/0x40 [ 83.141790][ T4978] dump_stack_lvl+0xf4/0x15c [ 83.142501][ T4978] dump_stack+0x1c/0x5c [ 83.143151][ T4978] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.144032][ T4978] dccp_xmit_packet+0x298/0x448 [ 83.144708][ T4978] dccp_write_xmit+0x118/0x1d0 [ 83.145505][ T4978] dccp_sendmsg+0x550/0x8b8 [ 83.146215][ T4978] inet_sendmsg+0x154/0x284 [ 83.146961][ T4978] __sys_sendto+0x30c/0x420 [ 83.147690][ T4978] __arm64_sys_sendto+0xd8/0xf8 [ 83.148452][ T4978] invoke_syscall+0x98/0x2b0 [ 83.149240][ T4978] el0_svc_common+0x138/0x258 [ 83.149972][ T4978] do_el0_svc+0x58/0x13c [ 83.150647][ T4978] el0_svc+0x78/0x1d0 [ 83.151291][ T4978] el0t_64_sync_handler+0xcc/0xe4 [ 83.152103][ T4978] el0t_64_sync+0x1a0/0x1a4 [ 83.173125][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.174800][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.175993][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.177602][ T4980] Call trace: [ 83.178205][ T4980] dump_backtrace+0x0/0x458 [ 83.178934][ T4980] show_stack+0x2c/0x3c [ 83.179610][ T4980] __dump_stack+0x30/0x40 [ 83.180263][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.181013][ T4980] dump_stack+0x1c/0x5c [ 83.181633][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.182574][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.183418][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.184251][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.185000][ T4980] inet_sendmsg+0x154/0x284 [ 83.185745][ T4980] __sys_sendto+0x30c/0x420 [ 83.186484][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.187239][ T4980] invoke_syscall+0x98/0x2b0 [ 83.187976][ T4980] el0_svc_common+0x138/0x258 [ 83.188745][ T4980] do_el0_svc+0x58/0x13c [ 83.189452][ T4980] el0_svc+0x78/0x1d0 [ 83.190098][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.190846][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.192856][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.194548][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.195671][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.197227][ T4980] Call trace: [ 83.197722][ T4980] dump_backtrace+0x0/0x458 [ 83.198401][ T4980] show_stack+0x2c/0x3c [ 83.199022][ T4980] __dump_stack+0x30/0x40 [ 83.199675][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.200366][ T4980] dump_stack+0x1c/0x5c [ 83.200992][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.201781][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.202555][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.203290][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.204038][ T4980] inet_sendmsg+0x154/0x284 [ 83.204747][ T4980] __sys_sendto+0x30c/0x420 [ 83.205579][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.206369][ T4980] invoke_syscall+0x98/0x2b0 [ 83.207130][ T4980] el0_svc_common+0x138/0x258 [ 83.207882][ T4980] do_el0_svc+0x58/0x13c [ 83.208531][ T4980] el0_svc+0x78/0x1d0 [ 83.209228][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.210065][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.211053][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.212892][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.214019][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.215565][ T4980] Call trace: [ 83.216096][ T4980] dump_backtrace+0x0/0x458 [ 83.216831][ T4980] show_stack+0x2c/0x3c [ 83.217490][ T4980] __dump_stack+0x30/0x40 [ 83.218226][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.218903][ T4980] dump_stack+0x1c/0x5c [ 83.219528][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.220312][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.221152][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.221953][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.222714][ T4980] inet_sendmsg+0x154/0x284 [ 83.223464][ T4980] __sys_sendto+0x30c/0x420 [ 83.224196][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.224985][ T4980] invoke_syscall+0x98/0x2b0 [ 83.225748][ T4980] el0_svc_common+0x138/0x258 [ 83.226499][ T4980] do_el0_svc+0x58/0x13c [ 83.227184][ T4980] el0_svc+0x78/0x1d0 [ 83.227766][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.228548][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.229549][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.231335][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.232538][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.234106][ T4980] Call trace: [ 83.234641][ T4980] dump_backtrace+0x0/0x458 [ 83.235521][ T4980] show_stack+0x2c/0x3c [ 83.236213][ T4980] __dump_stack+0x30/0x40 [ 83.236917][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.237738][ T4980] dump_stack+0x1c/0x5c [ 83.238443][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.239339][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.240138][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.240919][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.241679][ T4980] inet_sendmsg+0x154/0x284 [ 83.242417][ T4980] __sys_sendto+0x30c/0x420 [ 83.243165][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.244012][ T4980] invoke_syscall+0x98/0x2b0 [ 83.244746][ T4980] el0_svc_common+0x138/0x258 [ 83.245479][ T4980] do_el0_svc+0x58/0x13c [ 83.246204][ T4980] el0_svc+0x78/0x1d0 [ 83.246860][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.247686][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.248693][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.250276][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.251458][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.253010][ T4980] Call trace: [ 83.253545][ T4980] dump_backtrace+0x0/0x458 [ 83.254294][ T4980] show_stack+0x2c/0x3c [ 83.255018][ T4980] __dump_stack+0x30/0x40 [ 83.255790][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.256564][ T4980] dump_stack+0x1c/0x5c [ 83.257171][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.258084][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.258843][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.259617][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.260301][ T4980] inet_sendmsg+0x154/0x284 [ 83.261067][ T4980] __sys_sendto+0x30c/0x420 [ 83.261878][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.262656][ T4980] invoke_syscall+0x98/0x2b0 [ 83.263503][ T4980] el0_svc_common+0x138/0x258 [ 83.264279][ T4980] do_el0_svc+0x58/0x13c [ 83.265056][ T4980] el0_svc+0x78/0x1d0 [ 83.265781][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.266597][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.268052][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.269866][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.271124][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.272743][ T4980] Call trace: [ 83.273302][ T4980] dump_backtrace+0x0/0x458 [ 83.274050][ T4980] show_stack+0x2c/0x3c [ 83.274716][ T4980] __dump_stack+0x30/0x40 [ 83.275467][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.276245][ T4980] dump_stack+0x1c/0x5c [ 83.276959][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.277855][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.278626][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.279431][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.280202][ T4980] inet_sendmsg+0x154/0x284 [ 83.280897][ T4980] __sys_sendto+0x30c/0x420 [ 83.281612][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.282429][ T4980] invoke_syscall+0x98/0x2b0 [ 83.283211][ T4980] el0_svc_common+0x138/0x258 [ 83.284039][ T4980] do_el0_svc+0x58/0x13c [ 83.284726][ T4980] el0_svc+0x78/0x1d0 [ 83.285417][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.286246][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.287488][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.289199][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.290418][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.292052][ T4980] Call trace: [ 83.292596][ T4980] dump_backtrace+0x0/0x458 [ 83.293277][ T4980] show_stack+0x2c/0x3c [ 83.293950][ T4980] __dump_stack+0x30/0x40 [ 83.294675][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.295402][ T4980] dump_stack+0x1c/0x5c [ 83.296097][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.297007][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.297830][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.298595][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.299346][ T4980] inet_sendmsg+0x154/0x284 [ 83.300057][ T4980] __sys_sendto+0x30c/0x420 [ 83.300798][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.301557][ T4980] invoke_syscall+0x98/0x2b0 [ 83.302274][ T4980] el0_svc_common+0x138/0x258 [ 83.302972][ T4980] do_el0_svc+0x58/0x13c [ 83.303706][ T4980] el0_svc+0x78/0x1d0 [ 83.304399][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.305188][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.306719][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.308556][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.309681][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.311247][ T4980] Call trace: [ 83.311776][ T4980] dump_backtrace+0x0/0x458 [ 83.312528][ T4980] show_stack+0x2c/0x3c [ 83.313192][ T4980] __dump_stack+0x30/0x40 [ 83.313868][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.314570][ T4980] dump_stack+0x1c/0x5c [ 83.315246][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.316211][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.316977][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.317715][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.318470][ T4980] inet_sendmsg+0x154/0x284 [ 83.319166][ T4980] __sys_sendto+0x30c/0x420 [ 83.319871][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.320670][ T4980] invoke_syscall+0x98/0x2b0 [ 83.321396][ T4980] el0_svc_common+0x138/0x258 [ 83.322142][ T4980] do_el0_svc+0x58/0x13c [ 83.322812][ T4980] el0_svc+0x78/0x1d0 [ 83.323464][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.324320][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.325337][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.327124][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.328272][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.329876][ T4980] Call trace: [ 83.330389][ T4980] dump_backtrace+0x0/0x458 [ 83.331079][ T4980] show_stack+0x2c/0x3c [ 83.331766][ T4980] __dump_stack+0x30/0x40 [ 83.332498][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.333266][ T4980] dump_stack+0x1c/0x5c [ 83.333969][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.334885][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.335659][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.336410][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.337123][ T4980] inet_sendmsg+0x154/0x284 [ 83.337840][ T4980] __sys_sendto+0x30c/0x420 [ 83.338511][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.339253][ T4980] invoke_syscall+0x98/0x2b0 [ 83.340036][ T4980] el0_svc_common+0x138/0x258 [ 83.340774][ T4980] do_el0_svc+0x58/0x13c [ 83.341464][ T4980] el0_svc+0x78/0x1d0 [ 83.342100][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.342884][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.343838][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.345478][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.346537][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.348041][ T4980] Call trace: [ 83.348531][ T4980] dump_backtrace+0x0/0x458 [ 83.349259][ T4980] show_stack+0x2c/0x3c [ 83.349869][ T4980] __dump_stack+0x30/0x40 [ 83.350516][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.351247][ T4980] dump_stack+0x1c/0x5c [ 83.351892][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.352727][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.353485][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.354236][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.354937][ T4980] inet_sendmsg+0x154/0x284 [ 83.355673][ T4980] __sys_sendto+0x30c/0x420 [ 83.356498][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.357255][ T4980] invoke_syscall+0x98/0x2b0 [ 83.358031][ T4980] el0_svc_common+0x138/0x258 [ 83.358881][ T4980] do_el0_svc+0x58/0x13c [ 83.359598][ T4980] el0_svc+0x78/0x1d0 [ 83.360232][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.361035][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.362083][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.363677][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.364690][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.366286][ T4980] Call trace: [ 83.366779][ T4980] dump_backtrace+0x0/0x458 [ 83.367497][ T4980] show_stack+0x2c/0x3c [ 83.368192][ T4980] __dump_stack+0x30/0x40 [ 83.368882][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.369594][ T4980] dump_stack+0x1c/0x5c [ 83.370209][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.371069][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.371854][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.372772][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.373520][ T4980] inet_sendmsg+0x154/0x284 [ 83.374232][ T4980] __sys_sendto+0x30c/0x420 [ 83.374961][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.375702][ T4980] invoke_syscall+0x98/0x2b0 [ 83.376377][ T4980] el0_svc_common+0x138/0x258 [ 83.377120][ T4980] do_el0_svc+0x58/0x13c [ 83.377844][ T4980] el0_svc+0x78/0x1d0 [ 83.378476][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.379305][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.380394][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.382211][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.383274][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.384743][ T4980] Call trace: [ 83.385218][ T4980] dump_backtrace+0x0/0x458 [ 83.385841][ T4980] show_stack+0x2c/0x3c [ 83.386421][ T4980] __dump_stack+0x30/0x40 [ 83.387132][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.387859][ T4980] dump_stack+0x1c/0x5c [ 83.388464][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.389257][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.390009][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.390688][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.391363][ T4980] inet_sendmsg+0x154/0x284 [ 83.392039][ T4980] __sys_sendto+0x30c/0x420 [ 83.392775][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.393506][ T4980] invoke_syscall+0x98/0x2b0 [ 83.394168][ T4980] el0_svc_common+0x138/0x258 [ 83.394872][ T4980] do_el0_svc+0x58/0x13c [ 83.395550][ T4980] el0_svc+0x78/0x1d0 [ 83.396184][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.397000][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.397905][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.399665][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.400835][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.402496][ T4980] Call trace: [ 83.403008][ T4980] dump_backtrace+0x0/0x458 [ 83.403822][ T4980] show_stack+0x2c/0x3c [ 83.404528][ T4980] __dump_stack+0x30/0x40 [ 83.405211][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.406007][ T4980] dump_stack+0x1c/0x5c [ 83.406724][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.407597][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.408421][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.409187][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.409925][ T4980] inet_sendmsg+0x154/0x284 [ 83.410681][ T4980] __sys_sendto+0x30c/0x420 [ 83.411406][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.412137][ T4980] invoke_syscall+0x98/0x2b0 [ 83.412830][ T4980] el0_svc_common+0x138/0x258 [ 83.413521][ T4980] do_el0_svc+0x58/0x13c [ 83.414197][ T4980] el0_svc+0x78/0x1d0 [ 83.414806][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.415601][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.417506][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.419375][ T4980] CPU: 1 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.420421][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.422035][ T4980] Call trace: [ 83.422574][ T4980] dump_backtrace+0x0/0x458 [ 83.423273][ T4980] show_stack+0x2c/0x3c [ 83.423937][ T4980] __dump_stack+0x30/0x40 [ 83.424609][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.425320][ T4980] dump_stack+0x1c/0x5c [ 83.426017][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.426923][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.427694][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.428457][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.429108][ T4980] inet_sendmsg+0x154/0x284 [ 83.429896][ T4980] __sys_sendto+0x30c/0x420 [ 83.430600][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.431390][ T4980] invoke_syscall+0x98/0x2b0 [ 83.432046][ T4980] el0_svc_common+0x138/0x258 [ 83.432715][ T4980] do_el0_svc+0x58/0x13c [ 83.433465][ T4980] el0_svc+0x78/0x1d0 [ 83.434094][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.434911][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.436924][ T4980] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.438673][ T4980] CPU: 0 PID: 4980 Comm: syz.0.36 Not tainted syzkaller #0 [ 83.439835][ T4980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.441422][ T4980] Call trace: [ 83.441935][ T4980] dump_backtrace+0x0/0x458 [ 83.442632][ T4980] show_stack+0x2c/0x3c [ 83.443270][ T4980] __dump_stack+0x30/0x40 [ 83.443932][ T4980] dump_stack_lvl+0xf4/0x15c [ 83.444711][ T4980] dump_stack+0x1c/0x5c [ 83.445381][ T4980] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.446254][ T4980] dccp_xmit_packet+0x298/0x448 [ 83.447047][ T4980] dccp_write_xmit+0x118/0x1d0 [ 83.447773][ T4980] dccp_sendmsg+0x550/0x8b8 [ 83.448482][ T4980] inet_sendmsg+0x154/0x284 [ 83.449194][ T4980] __sys_sendto+0x30c/0x420 [ 83.449939][ T4980] __arm64_sys_sendto+0xd8/0xf8 [ 83.450717][ T4980] invoke_syscall+0x98/0x2b0 [ 83.451424][ T4980] el0_svc_common+0x138/0x258 [ 83.452237][ T4980] do_el0_svc+0x58/0x13c [ 83.452926][ T4980] el0_svc+0x78/0x1d0 [ 83.453571][ T4980] el0t_64_sync_handler+0xcc/0xe4 [ 83.454440][ T4980] el0t_64_sync+0x1a0/0x1a4 [ 83.469862][ T4982] net_ratelimit: 11 callbacks suppressed [ 83.469874][ T4982] dccp_xmit_packet: Payload too large (65475) for featneg. [ 83.478818][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.480662][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.481806][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.483442][ T4982] Call trace: [ 83.483976][ T4982] dump_backtrace+0x0/0x458 [ 83.484713][ T4982] show_stack+0x2c/0x3c [ 83.485425][ T4982] __dump_stack+0x30/0x40 [ 83.486192][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.486950][ T4982] dump_stack+0x1c/0x5c [ 83.487620][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.488534][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.489349][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.490147][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.490904][ T4982] inet_sendmsg+0x154/0x284 [ 83.491641][ T4982] __sys_sendto+0x30c/0x420 [ 83.492378][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.493123][ T4982] invoke_syscall+0x98/0x2b0 [ 83.493824][ T4982] el0_svc_common+0x138/0x258 [ 83.494556][ T4982] do_el0_svc+0x58/0x13c [ 83.495249][ T4982] el0_svc+0x78/0x1d0 [ 83.495874][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.496661][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.497951][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.499677][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.500760][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.502444][ T4982] Call trace: [ 83.502990][ T4982] dump_backtrace+0x0/0x458 [ 83.503733][ T4982] show_stack+0x2c/0x3c [ 83.504364][ T4982] __dump_stack+0x30/0x40 [ 83.505005][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.505677][ T4982] dump_stack+0x1c/0x5c [ 83.506286][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.507094][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.507817][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.508533][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.509225][ T4982] inet_sendmsg+0x154/0x284 [ 83.509904][ T4982] __sys_sendto+0x30c/0x420 [ 83.510587][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.511351][ T4982] invoke_syscall+0x98/0x2b0 [ 83.512009][ T4982] el0_svc_common+0x138/0x258 [ 83.512743][ T4982] do_el0_svc+0x58/0x13c [ 83.513387][ T4982] el0_svc+0x78/0x1d0 [ 83.513993][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.514885][ T4982] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:01:23 executed programs: 23 [ 83.517107][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.518752][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.519857][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.521396][ T4982] Call trace: [ 83.521910][ T4982] dump_backtrace+0x0/0x458 [ 83.522670][ T4982] show_stack+0x2c/0x3c [ 83.523300][ T4982] __dump_stack+0x30/0x40 [ 83.523964][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.524788][ T4982] dump_stack+0x1c/0x5c [ 83.525491][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.526425][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.527189][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.527923][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.528626][ T4982] inet_sendmsg+0x154/0x284 [ 83.529397][ T4982] __sys_sendto+0x30c/0x420 [ 83.530135][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.530963][ T4982] invoke_syscall+0x98/0x2b0 [ 83.531725][ T4982] el0_svc_common+0x138/0x258 [ 83.532499][ T4982] do_el0_svc+0x58/0x13c [ 83.533161][ T4982] el0_svc+0x78/0x1d0 [ 83.533769][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.534615][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.535599][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.537416][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.538526][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.540100][ T4982] Call trace: [ 83.540563][ T4982] dump_backtrace+0x0/0x458 [ 83.541251][ T4982] show_stack+0x2c/0x3c [ 83.541846][ T4982] __dump_stack+0x30/0x40 [ 83.542513][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.543186][ T4982] dump_stack+0x1c/0x5c [ 83.543774][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.544588][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.545316][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.546052][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.546726][ T4982] inet_sendmsg+0x154/0x284 [ 83.547409][ T4982] __sys_sendto+0x30c/0x420 [ 83.548076][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.548784][ T4982] invoke_syscall+0x98/0x2b0 [ 83.549555][ T4982] el0_svc_common+0x138/0x258 [ 83.550323][ T4982] do_el0_svc+0x58/0x13c [ 83.550987][ T4982] el0_svc+0x78/0x1d0 [ 83.551717][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.552572][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.553803][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.555520][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.556739][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.558328][ T4982] Call trace: [ 83.558814][ T4982] dump_backtrace+0x0/0x458 [ 83.559562][ T4982] show_stack+0x2c/0x3c [ 83.560224][ T4982] __dump_stack+0x30/0x40 [ 83.560904][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.561717][ T4982] dump_stack+0x1c/0x5c [ 83.562406][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.563283][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.564073][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.564853][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.565585][ T4982] inet_sendmsg+0x154/0x284 [ 83.566214][ T4982] __sys_sendto+0x30c/0x420 [ 83.566869][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.567542][ T4982] invoke_syscall+0x98/0x2b0 [ 83.568178][ T4982] el0_svc_common+0x138/0x258 [ 83.568841][ T4982] do_el0_svc+0x58/0x13c [ 83.569461][ T4982] el0_svc+0x78/0x1d0 [ 83.570023][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.570711][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.573945][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.575816][ T4982] CPU: 0 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.576859][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.578407][ T4982] Call trace: [ 83.578904][ T4982] dump_backtrace+0x0/0x458 [ 83.579609][ T4982] show_stack+0x2c/0x3c [ 83.580251][ T4982] __dump_stack+0x30/0x40 [ 83.580912][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.581674][ T4982] dump_stack+0x1c/0x5c [ 83.582350][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.583178][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.583991][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.584790][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.585496][ T4982] inet_sendmsg+0x154/0x284 [ 83.586192][ T4982] __sys_sendto+0x30c/0x420 [ 83.586913][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.587696][ T4982] invoke_syscall+0x98/0x2b0 [ 83.588444][ T4982] el0_svc_common+0x138/0x258 [ 83.589175][ T4982] do_el0_svc+0x58/0x13c [ 83.589811][ T4982] el0_svc+0x78/0x1d0 [ 83.590400][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.591103][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.592756][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.594375][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.595542][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.597056][ T4982] Call trace: [ 83.597530][ T4982] dump_backtrace+0x0/0x458 [ 83.598268][ T4982] show_stack+0x2c/0x3c [ 83.598932][ T4982] __dump_stack+0x30/0x40 [ 83.599631][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.600306][ T4982] dump_stack+0x1c/0x5c [ 83.600913][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.601727][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.602556][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.603353][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.604068][ T4982] inet_sendmsg+0x154/0x284 [ 83.604799][ T4982] __sys_sendto+0x30c/0x420 [ 83.605530][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.606300][ T4982] invoke_syscall+0x98/0x2b0 [ 83.607065][ T4982] el0_svc_common+0x138/0x258 [ 83.607794][ T4982] do_el0_svc+0x58/0x13c [ 83.608486][ T4982] el0_svc+0x78/0x1d0 [ 83.609122][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.609922][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.610980][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.612868][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.613974][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.615578][ T4982] Call trace: [ 83.616060][ T4982] dump_backtrace+0x0/0x458 [ 83.616730][ T4982] show_stack+0x2c/0x3c [ 83.617331][ T4982] __dump_stack+0x30/0x40 [ 83.617986][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.618633][ T4982] dump_stack+0x1c/0x5c [ 83.619197][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.620027][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.620826][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.621630][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.622329][ T4982] inet_sendmsg+0x154/0x284 [ 83.622997][ T4982] __sys_sendto+0x30c/0x420 [ 83.623715][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.624443][ T4982] invoke_syscall+0x98/0x2b0 [ 83.625104][ T4982] el0_svc_common+0x138/0x258 [ 83.625768][ T4982] do_el0_svc+0x58/0x13c [ 83.626407][ T4982] el0_svc+0x78/0x1d0 [ 83.626963][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.627677][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.629281][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.631069][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.632228][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.633870][ T4982] Call trace: [ 83.634382][ T4982] dump_backtrace+0x0/0x458 [ 83.635125][ T4982] show_stack+0x2c/0x3c [ 83.635750][ T4982] __dump_stack+0x30/0x40 [ 83.636423][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.637169][ T4982] dump_stack+0x1c/0x5c [ 83.637802][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.638722][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.639559][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.640377][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.641141][ T4982] inet_sendmsg+0x154/0x284 [ 83.641880][ T4982] __sys_sendto+0x30c/0x420 [ 83.642606][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.643307][ T4982] invoke_syscall+0x98/0x2b0 [ 83.644046][ T4982] el0_svc_common+0x138/0x258 [ 83.644778][ T4982] do_el0_svc+0x58/0x13c [ 83.645453][ T4982] el0_svc+0x78/0x1d0 [ 83.646096][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.646953][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.647877][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.649572][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.650694][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.652185][ T4982] Call trace: [ 83.652683][ T4982] dump_backtrace+0x0/0x458 [ 83.653408][ T4982] show_stack+0x2c/0x3c [ 83.654084][ T4982] __dump_stack+0x30/0x40 [ 83.654789][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.655514][ T4982] dump_stack+0x1c/0x5c [ 83.656157][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.657063][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.657922][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.658776][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.659563][ T4982] inet_sendmsg+0x154/0x284 [ 83.660275][ T4982] __sys_sendto+0x30c/0x420 [ 83.661001][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.661767][ T4982] invoke_syscall+0x98/0x2b0 [ 83.662450][ T4982] el0_svc_common+0x138/0x258 [ 83.663254][ T4982] do_el0_svc+0x58/0x13c [ 83.663925][ T4982] el0_svc+0x78/0x1d0 [ 83.664600][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.665388][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.666453][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.668255][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.669358][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.670996][ T4982] Call trace: [ 83.671529][ T4982] dump_backtrace+0x0/0x458 [ 83.672272][ T4982] show_stack+0x2c/0x3c [ 83.672998][ T4982] __dump_stack+0x30/0x40 [ 83.673713][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.674509][ T4982] dump_stack+0x1c/0x5c [ 83.675195][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.676102][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.676927][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.677711][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.678456][ T4982] inet_sendmsg+0x154/0x284 [ 83.679197][ T4982] __sys_sendto+0x30c/0x420 [ 83.679884][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.680660][ T4982] invoke_syscall+0x98/0x2b0 [ 83.681385][ T4982] el0_svc_common+0x138/0x258 [ 83.682176][ T4982] do_el0_svc+0x58/0x13c [ 83.682836][ T4982] el0_svc+0x78/0x1d0 [ 83.683468][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.684299][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.685316][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.686954][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.688188][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.689700][ T4982] Call trace: [ 83.690167][ T4982] dump_backtrace+0x0/0x458 [ 83.690842][ T4982] show_stack+0x2c/0x3c [ 83.691513][ T4982] __dump_stack+0x30/0x40 [ 83.692176][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.692869][ T4982] dump_stack+0x1c/0x5c [ 83.693547][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.694339][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.695031][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.695806][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.696571][ T4982] inet_sendmsg+0x154/0x284 [ 83.697328][ T4982] __sys_sendto+0x30c/0x420 [ 83.698061][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.698870][ T4982] invoke_syscall+0x98/0x2b0 [ 83.699627][ T4982] el0_svc_common+0x138/0x258 [ 83.700428][ T4982] do_el0_svc+0x58/0x13c [ 83.701160][ T4982] el0_svc+0x78/0x1d0 [ 83.701875][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.702644][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.703925][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.705721][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.706866][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.708437][ T4982] Call trace: [ 83.708926][ T4982] dump_backtrace+0x0/0x458 [ 83.709621][ T4982] show_stack+0x2c/0x3c [ 83.710317][ T4982] __dump_stack+0x30/0x40 [ 83.711023][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.711804][ T4982] dump_stack+0x1c/0x5c [ 83.712502][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.713361][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.714154][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.714891][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.715613][ T4982] inet_sendmsg+0x154/0x284 [ 83.716342][ T4982] __sys_sendto+0x30c/0x420 [ 83.717060][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.717775][ T4982] invoke_syscall+0x98/0x2b0 [ 83.718468][ T4982] el0_svc_common+0x138/0x258 [ 83.719219][ T4982] do_el0_svc+0x58/0x13c [ 83.719896][ T4982] el0_svc+0x78/0x1d0 [ 83.720528][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.721369][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.723011][ T4982] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.724685][ T4982] CPU: 1 PID: 4982 Comm: syz.0.37 Not tainted syzkaller #0 [ 83.725800][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.727369][ T4982] Call trace: [ 83.727855][ T4982] dump_backtrace+0x0/0x458 [ 83.728503][ T4982] show_stack+0x2c/0x3c [ 83.729152][ T4982] __dump_stack+0x30/0x40 [ 83.729766][ T4982] dump_stack_lvl+0xf4/0x15c [ 83.730474][ T4982] dump_stack+0x1c/0x5c [ 83.731091][ T4982] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.731917][ T4982] dccp_xmit_packet+0x298/0x448 [ 83.732628][ T4982] dccp_write_xmit+0x118/0x1d0 [ 83.733357][ T4982] dccp_sendmsg+0x550/0x8b8 [ 83.734088][ T4982] inet_sendmsg+0x154/0x284 [ 83.734802][ T4982] __sys_sendto+0x30c/0x420 [ 83.735511][ T4982] __arm64_sys_sendto+0xd8/0xf8 [ 83.736326][ T4982] invoke_syscall+0x98/0x2b0 [ 83.737111][ T4982] el0_svc_common+0x138/0x258 [ 83.737797][ T4982] do_el0_svc+0x58/0x13c [ 83.738485][ T4982] el0_svc+0x78/0x1d0 [ 83.739083][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 83.739832][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 83.757651][ T4984] dccp_xmit_packet: Payload too large (65475) for featneg. [ 83.765915][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.767722][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.768829][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.770362][ T4984] Call trace: [ 83.770869][ T4984] dump_backtrace+0x0/0x458 [ 83.771567][ T4984] show_stack+0x2c/0x3c [ 83.772213][ T4984] __dump_stack+0x30/0x40 [ 83.772856][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.773530][ T4984] dump_stack+0x1c/0x5c [ 83.774200][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.775046][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.775796][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.776581][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.777273][ T4984] inet_sendmsg+0x154/0x284 [ 83.777980][ T4984] __sys_sendto+0x30c/0x420 [ 83.778680][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.779445][ T4984] invoke_syscall+0x98/0x2b0 [ 83.780207][ T4984] el0_svc_common+0x138/0x258 [ 83.780949][ T4984] do_el0_svc+0x58/0x13c [ 83.781632][ T4984] el0_svc+0x78/0x1d0 [ 83.782294][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.783107][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.784513][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.786276][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.787331][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.788837][ T4984] Call trace: [ 83.789369][ T4984] dump_backtrace+0x0/0x458 [ 83.790066][ T4984] show_stack+0x2c/0x3c [ 83.790712][ T4984] __dump_stack+0x30/0x40 [ 83.791343][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.792028][ T4984] dump_stack+0x1c/0x5c [ 83.792706][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.793528][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.794256][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.795043][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.795786][ T4984] inet_sendmsg+0x154/0x284 [ 83.796446][ T4984] __sys_sendto+0x30c/0x420 [ 83.797148][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.797911][ T4984] invoke_syscall+0x98/0x2b0 [ 83.798644][ T4984] el0_svc_common+0x138/0x258 [ 83.799384][ T4984] do_el0_svc+0x58/0x13c [ 83.800052][ T4984] el0_svc+0x78/0x1d0 [ 83.800703][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.801520][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.803528][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.805367][ T4984] CPU: 0 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.806523][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.808131][ T4984] Call trace: [ 83.808630][ T4984] dump_backtrace+0x0/0x458 [ 83.809352][ T4984] show_stack+0x2c/0x3c [ 83.809966][ T4984] __dump_stack+0x30/0x40 [ 83.810693][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.811480][ T4984] dump_stack+0x1c/0x5c [ 83.812185][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.813140][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.813998][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.814807][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.815612][ T4984] inet_sendmsg+0x154/0x284 [ 83.816313][ T4984] __sys_sendto+0x30c/0x420 [ 83.817011][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.817781][ T4984] invoke_syscall+0x98/0x2b0 [ 83.818507][ T4984] el0_svc_common+0x138/0x258 [ 83.819318][ T4984] do_el0_svc+0x58/0x13c [ 83.820028][ T4984] el0_svc+0x78/0x1d0 [ 83.820672][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.821487][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.823707][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.825343][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.826524][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.828067][ T4984] Call trace: [ 83.828571][ T4984] dump_backtrace+0x0/0x458 [ 83.829250][ T4984] show_stack+0x2c/0x3c [ 83.829855][ T4984] __dump_stack+0x30/0x40 [ 83.830493][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.831213][ T4984] dump_stack+0x1c/0x5c [ 83.831865][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.832827][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.833606][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.834374][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.835092][ T4984] inet_sendmsg+0x154/0x284 [ 83.835821][ T4984] __sys_sendto+0x30c/0x420 [ 83.836515][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.837238][ T4984] invoke_syscall+0x98/0x2b0 [ 83.837912][ T4984] el0_svc_common+0x138/0x258 [ 83.838613][ T4984] do_el0_svc+0x58/0x13c [ 83.839238][ T4984] el0_svc+0x78/0x1d0 [ 83.839820][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.840533][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.841524][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.843207][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.844276][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.845829][ T4984] Call trace: [ 83.846329][ T4984] dump_backtrace+0x0/0x458 [ 83.846982][ T4984] show_stack+0x2c/0x3c [ 83.847616][ T4984] __dump_stack+0x30/0x40 [ 83.848259][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.849040][ T4984] dump_stack+0x1c/0x5c [ 83.849652][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.850543][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.851286][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.852103][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.852801][ T4984] inet_sendmsg+0x154/0x284 [ 83.853526][ T4984] __sys_sendto+0x30c/0x420 [ 83.854224][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.854960][ T4984] invoke_syscall+0x98/0x2b0 [ 83.855665][ T4984] el0_svc_common+0x138/0x258 [ 83.856460][ T4984] do_el0_svc+0x58/0x13c [ 83.857109][ T4984] el0_svc+0x78/0x1d0 [ 83.857764][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.858617][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.859516][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.861226][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.862406][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.864021][ T4984] Call trace: [ 83.864550][ T4984] dump_backtrace+0x0/0x458 [ 83.865275][ T4984] show_stack+0x2c/0x3c [ 83.865985][ T4984] __dump_stack+0x30/0x40 [ 83.866675][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.867400][ T4984] dump_stack+0x1c/0x5c [ 83.868065][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.868974][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.869768][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.870562][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.871263][ T4984] inet_sendmsg+0x154/0x284 [ 83.872026][ T4984] __sys_sendto+0x30c/0x420 [ 83.872746][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.873454][ T4984] invoke_syscall+0x98/0x2b0 [ 83.874165][ T4984] el0_svc_common+0x138/0x258 [ 83.874888][ T4984] do_el0_svc+0x58/0x13c [ 83.875581][ T4984] el0_svc+0x78/0x1d0 [ 83.876181][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.876946][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.878240][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.880036][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.881159][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.882753][ T4984] Call trace: [ 83.883336][ T4984] dump_backtrace+0x0/0x458 [ 83.884068][ T4984] show_stack+0x2c/0x3c [ 83.884757][ T4984] __dump_stack+0x30/0x40 [ 83.885483][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.886205][ T4984] dump_stack+0x1c/0x5c [ 83.886888][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.887774][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.888522][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.889282][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.889984][ T4984] inet_sendmsg+0x154/0x284 [ 83.890634][ T4984] __sys_sendto+0x30c/0x420 [ 83.891366][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.892159][ T4984] invoke_syscall+0x98/0x2b0 [ 83.892923][ T4984] el0_svc_common+0x138/0x258 [ 83.893647][ T4984] do_el0_svc+0x58/0x13c [ 83.894315][ T4984] el0_svc+0x78/0x1d0 [ 83.894969][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.895803][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.896773][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.898423][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.899546][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.901053][ T4984] Call trace: [ 83.901540][ T4984] dump_backtrace+0x0/0x458 [ 83.902224][ T4984] show_stack+0x2c/0x3c [ 83.902874][ T4984] __dump_stack+0x30/0x40 [ 83.903521][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.904222][ T4984] dump_stack+0x1c/0x5c [ 83.904879][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.905796][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.906566][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.907330][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.908013][ T4984] inet_sendmsg+0x154/0x284 [ 83.908694][ T4984] __sys_sendto+0x30c/0x420 [ 83.909398][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.910152][ T4984] invoke_syscall+0x98/0x2b0 [ 83.910921][ T4984] el0_svc_common+0x138/0x258 [ 83.911682][ T4984] do_el0_svc+0x58/0x13c [ 83.912356][ T4984] el0_svc+0x78/0x1d0 [ 83.913021][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.913860][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.914910][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.916686][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.917832][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.919454][ T4984] Call trace: [ 83.919956][ T4984] dump_backtrace+0x0/0x458 [ 83.920652][ T4984] show_stack+0x2c/0x3c [ 83.921324][ T4984] __dump_stack+0x30/0x40 [ 83.922031][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.922793][ T4984] dump_stack+0x1c/0x5c [ 83.923448][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.924375][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.925173][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.925873][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.926622][ T4984] inet_sendmsg+0x154/0x284 [ 83.927260][ T4984] __sys_sendto+0x30c/0x420 [ 83.927880][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.928664][ T4984] invoke_syscall+0x98/0x2b0 [ 83.929400][ T4984] el0_svc_common+0x138/0x258 [ 83.930107][ T4984] do_el0_svc+0x58/0x13c [ 83.930790][ T4984] el0_svc+0x78/0x1d0 [ 83.931360][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.932188][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.933087][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.934690][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.935817][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.937292][ T4984] Call trace: [ 83.937783][ T4984] dump_backtrace+0x0/0x458 [ 83.938483][ T4984] show_stack+0x2c/0x3c [ 83.939148][ T4984] __dump_stack+0x30/0x40 [ 83.939796][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.940575][ T4984] dump_stack+0x1c/0x5c [ 83.941194][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.942134][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.942921][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.943680][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.944427][ T4984] inet_sendmsg+0x154/0x284 [ 83.945162][ T4984] __sys_sendto+0x30c/0x420 [ 83.945903][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.946700][ T4984] invoke_syscall+0x98/0x2b0 [ 83.947413][ T4984] el0_svc_common+0x138/0x258 [ 83.948157][ T4984] do_el0_svc+0x58/0x13c [ 83.948829][ T4984] el0_svc+0x78/0x1d0 [ 83.949462][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.950258][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.951268][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.952909][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.953947][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.955433][ T4984] Call trace: [ 83.955933][ T4984] dump_backtrace+0x0/0x458 [ 83.956646][ T4984] show_stack+0x2c/0x3c [ 83.957336][ T4984] __dump_stack+0x30/0x40 [ 83.958021][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.958674][ T4984] dump_stack+0x1c/0x5c [ 83.959289][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.960050][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.960741][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.961425][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.962105][ T4984] inet_sendmsg+0x154/0x284 [ 83.962829][ T4984] __sys_sendto+0x30c/0x420 [ 83.963522][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.964323][ T4984] invoke_syscall+0x98/0x2b0 [ 83.965002][ T4984] el0_svc_common+0x138/0x258 [ 83.965688][ T4984] do_el0_svc+0x58/0x13c [ 83.966315][ T4984] el0_svc+0x78/0x1d0 [ 83.966923][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.967751][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.968570][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.970188][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.971315][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.972866][ T4984] Call trace: [ 83.973315][ T4984] dump_backtrace+0x0/0x458 [ 83.973969][ T4984] show_stack+0x2c/0x3c [ 83.974618][ T4984] __dump_stack+0x30/0x40 [ 83.975286][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.976008][ T4984] dump_stack+0x1c/0x5c [ 83.976656][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.977492][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.978222][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.978942][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.979636][ T4984] inet_sendmsg+0x154/0x284 [ 83.980333][ T4984] __sys_sendto+0x30c/0x420 [ 83.980989][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.981698][ T4984] invoke_syscall+0x98/0x2b0 [ 83.982375][ T4984] el0_svc_common+0x138/0x258 [ 83.983038][ T4984] do_el0_svc+0x58/0x13c [ 83.983652][ T4984] el0_svc+0x78/0x1d0 [ 83.984240][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 83.984954][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 83.985826][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 83.987478][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 83.988557][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.990102][ T4984] Call trace: [ 83.990577][ T4984] dump_backtrace+0x0/0x458 [ 83.991269][ T4984] show_stack+0x2c/0x3c [ 83.991909][ T4984] __dump_stack+0x30/0x40 [ 83.992573][ T4984] dump_stack_lvl+0xf4/0x15c [ 83.993373][ T4984] dump_stack+0x1c/0x5c [ 83.993986][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 83.994851][ T4984] dccp_xmit_packet+0x298/0x448 [ 83.995625][ T4984] dccp_write_xmit+0x118/0x1d0 [ 83.996371][ T4984] dccp_sendmsg+0x550/0x8b8 [ 83.997059][ T4984] inet_sendmsg+0x154/0x284 [ 83.997742][ T4984] __sys_sendto+0x30c/0x420 [ 83.998476][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 83.999258][ T4984] invoke_syscall+0x98/0x2b0 [ 84.000093][ T4984] el0_svc_common+0x138/0x258 [ 84.000882][ T4984] do_el0_svc+0x58/0x13c [ 84.001567][ T4984] el0_svc+0x78/0x1d0 [ 84.002175][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 84.002955][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 84.003975][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.005777][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 84.006919][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.008389][ T4984] Call trace: [ 84.008858][ T4984] dump_backtrace+0x0/0x458 [ 84.009548][ T4984] show_stack+0x2c/0x3c [ 84.010184][ T4984] __dump_stack+0x30/0x40 [ 84.010916][ T4984] dump_stack_lvl+0xf4/0x15c [ 84.011659][ T4984] dump_stack+0x1c/0x5c [ 84.012329][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.013192][ T4984] dccp_xmit_packet+0x298/0x448 [ 84.013938][ T4984] dccp_write_xmit+0x118/0x1d0 [ 84.014660][ T4984] dccp_sendmsg+0x550/0x8b8 [ 84.015354][ T4984] inet_sendmsg+0x154/0x284 [ 84.015990][ T4984] __sys_sendto+0x30c/0x420 [ 84.016679][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 84.017394][ T4984] invoke_syscall+0x98/0x2b0 [ 84.018086][ T4984] el0_svc_common+0x138/0x258 [ 84.018771][ T4984] do_el0_svc+0x58/0x13c [ 84.019467][ T4984] el0_svc+0x78/0x1d0 [ 84.020026][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 84.020808][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 84.021760][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.023388][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 84.024518][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.026056][ T4984] Call trace: [ 84.026561][ T4984] dump_backtrace+0x0/0x458 [ 84.027330][ T4984] show_stack+0x2c/0x3c [ 84.027942][ T4984] __dump_stack+0x30/0x40 [ 84.028610][ T4984] dump_stack_lvl+0xf4/0x15c [ 84.029360][ T4984] dump_stack+0x1c/0x5c [ 84.029984][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.030855][ T4984] dccp_xmit_packet+0x298/0x448 [ 84.031556][ T4984] dccp_write_xmit+0x118/0x1d0 [ 84.032365][ T4984] dccp_sendmsg+0x550/0x8b8 [ 84.033111][ T4984] inet_sendmsg+0x154/0x284 [ 84.033870][ T4984] __sys_sendto+0x30c/0x420 [ 84.034610][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 84.035425][ T4984] invoke_syscall+0x98/0x2b0 [ 84.036132][ T4984] el0_svc_common+0x138/0x258 [ 84.036866][ T4984] do_el0_svc+0x58/0x13c [ 84.037576][ T4984] el0_svc+0x78/0x1d0 [ 84.038221][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 84.038997][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 84.040125][ T4984] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.041969][ T4984] CPU: 1 PID: 4984 Comm: syz.0.38 Not tainted syzkaller #0 [ 84.043064][ T4984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.044595][ T4984] Call trace: [ 84.045083][ T4984] dump_backtrace+0x0/0x458 [ 84.045785][ T4984] show_stack+0x2c/0x3c [ 84.046395][ T4984] __dump_stack+0x30/0x40 [ 84.047071][ T4984] dump_stack_lvl+0xf4/0x15c [ 84.047744][ T4984] dump_stack+0x1c/0x5c [ 84.048368][ T4984] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.049226][ T4984] dccp_xmit_packet+0x298/0x448 [ 84.049956][ T4984] dccp_write_xmit+0x118/0x1d0 [ 84.050695][ T4984] dccp_sendmsg+0x550/0x8b8 [ 84.051363][ T4984] inet_sendmsg+0x154/0x284 [ 84.052023][ T4984] __sys_sendto+0x30c/0x420 [ 84.052777][ T4984] __arm64_sys_sendto+0xd8/0xf8 [ 84.053560][ T4984] invoke_syscall+0x98/0x2b0 [ 84.054395][ T4984] el0_svc_common+0x138/0x258 [ 84.055164][ T4984] do_el0_svc+0x58/0x13c [ 84.055869][ T4984] el0_svc+0x78/0x1d0 [ 84.056522][ T4984] el0t_64_sync_handler+0xcc/0xe4 [ 84.057375][ T4984] el0t_64_sync+0x1a0/0x1a4 [ 84.074805][ T4986] dccp_xmit_packet: Payload too large (65475) for featneg. [ 84.082705][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.084485][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.085565][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.087075][ T4986] Call trace: [ 84.087561][ T4986] dump_backtrace+0x0/0x458 [ 84.088282][ T4986] show_stack+0x2c/0x3c [ 84.088883][ T4986] __dump_stack+0x30/0x40 [ 84.089551][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.090206][ T4986] dump_stack+0x1c/0x5c [ 84.090783][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.091580][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.092355][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.093109][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.093839][ T4986] inet_sendmsg+0x154/0x284 [ 84.094568][ T4986] __sys_sendto+0x30c/0x420 [ 84.095276][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.096047][ T4986] invoke_syscall+0x98/0x2b0 [ 84.096765][ T4986] el0_svc_common+0x138/0x258 [ 84.097504][ T4986] do_el0_svc+0x58/0x13c [ 84.098167][ T4986] el0_svc+0x78/0x1d0 [ 84.098785][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.099556][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.100740][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.102438][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.103482][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.104938][ T4986] Call trace: [ 84.105416][ T4986] dump_backtrace+0x0/0x458 [ 84.106174][ T4986] show_stack+0x2c/0x3c [ 84.106820][ T4986] __dump_stack+0x30/0x40 [ 84.107573][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.108295][ T4986] dump_stack+0x1c/0x5c [ 84.108945][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.109799][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.110543][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.111269][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.112025][ T4986] inet_sendmsg+0x154/0x284 [ 84.112800][ T4986] __sys_sendto+0x30c/0x420 [ 84.113576][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.114417][ T4986] invoke_syscall+0x98/0x2b0 [ 84.115213][ T4986] el0_svc_common+0x138/0x258 [ 84.116022][ T4986] do_el0_svc+0x58/0x13c [ 84.116701][ T4986] el0_svc+0x78/0x1d0 [ 84.117322][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.118165][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.120585][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.122459][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.123674][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.125025][ T4986] Call trace: [ 84.125467][ T4986] dump_backtrace+0x0/0x458 [ 84.126073][ T4986] show_stack+0x2c/0x3c [ 84.126643][ T4986] __dump_stack+0x30/0x40 [ 84.127260][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.128020][ T4986] dump_stack+0x1c/0x5c [ 84.128709][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.129564][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.130319][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.131068][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.131793][ T4986] inet_sendmsg+0x154/0x284 [ 84.132551][ T4986] __sys_sendto+0x30c/0x420 [ 84.133322][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.134169][ T4986] invoke_syscall+0x98/0x2b0 [ 84.134926][ T4986] el0_svc_common+0x138/0x258 [ 84.135668][ T4986] do_el0_svc+0x58/0x13c [ 84.136341][ T4986] el0_svc+0x78/0x1d0 [ 84.137017][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.137875][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.138903][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.140746][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.141927][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.143505][ T4986] Call trace: [ 84.144013][ T4986] dump_backtrace+0x0/0x458 [ 84.144723][ T4986] show_stack+0x2c/0x3c [ 84.145381][ T4986] __dump_stack+0x30/0x40 [ 84.146100][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.146871][ T4986] dump_stack+0x1c/0x5c [ 84.147605][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.148547][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.149329][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.150136][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.150861][ T4986] inet_sendmsg+0x154/0x284 [ 84.151576][ T4986] __sys_sendto+0x30c/0x420 [ 84.152269][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.153022][ T4986] invoke_syscall+0x98/0x2b0 [ 84.153804][ T4986] el0_svc_common+0x138/0x258 [ 84.154499][ T4986] do_el0_svc+0x58/0x13c [ 84.155144][ T4986] el0_svc+0x78/0x1d0 [ 84.155796][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.156634][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.157553][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.159333][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.160504][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.162048][ T4986] Call trace: [ 84.162549][ T4986] dump_backtrace+0x0/0x458 [ 84.163207][ T4986] show_stack+0x2c/0x3c [ 84.163888][ T4986] __dump_stack+0x30/0x40 [ 84.164610][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.165360][ T4986] dump_stack+0x1c/0x5c [ 84.166045][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.166936][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.167706][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.168470][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.169191][ T4986] inet_sendmsg+0x154/0x284 [ 84.169911][ T4986] __sys_sendto+0x30c/0x420 [ 84.170618][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.171391][ T4986] invoke_syscall+0x98/0x2b0 [ 84.172185][ T4986] el0_svc_common+0x138/0x258 [ 84.172928][ T4986] do_el0_svc+0x58/0x13c [ 84.173587][ T4986] el0_svc+0x78/0x1d0 [ 84.174184][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.174955][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.175845][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.177616][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.178834][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.180469][ T4986] Call trace: [ 84.180996][ T4986] dump_backtrace+0x0/0x458 [ 84.181676][ T4986] show_stack+0x2c/0x3c [ 84.182283][ T4986] __dump_stack+0x30/0x40 [ 84.183022][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.183744][ T4986] dump_stack+0x1c/0x5c [ 84.184389][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.185277][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.186012][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.186723][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.187408][ T4986] inet_sendmsg+0x154/0x284 [ 84.188068][ T4986] __sys_sendto+0x30c/0x420 [ 84.188678][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.189448][ T4986] invoke_syscall+0x98/0x2b0 [ 84.190262][ T4986] el0_svc_common+0x138/0x258 [ 84.191018][ T4986] do_el0_svc+0x58/0x13c [ 84.191738][ T4986] el0_svc+0x78/0x1d0 [ 84.192378][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.193205][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.194411][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.196456][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.197612][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.199166][ T4986] Call trace: [ 84.199690][ T4986] dump_backtrace+0x0/0x458 [ 84.200423][ T4986] show_stack+0x2c/0x3c [ 84.201054][ T4986] __dump_stack+0x30/0x40 [ 84.201705][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.202429][ T4986] dump_stack+0x1c/0x5c [ 84.203084][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.203991][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.204705][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.205419][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.206112][ T4986] inet_sendmsg+0x154/0x284 [ 84.206822][ T4986] __sys_sendto+0x30c/0x420 [ 84.207594][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.208388][ T4986] invoke_syscall+0x98/0x2b0 [ 84.209111][ T4986] el0_svc_common+0x138/0x258 [ 84.209840][ T4986] do_el0_svc+0x58/0x13c [ 84.210553][ T4986] el0_svc+0x78/0x1d0 [ 84.211192][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.212049][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.213839][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.215741][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.216889][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.218616][ T4986] Call trace: [ 84.219150][ T4986] dump_backtrace+0x0/0x458 [ 84.219882][ T4986] show_stack+0x2c/0x3c [ 84.220606][ T4986] __dump_stack+0x30/0x40 [ 84.221244][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.222022][ T4986] dump_stack+0x1c/0x5c [ 84.222684][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.223524][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.224295][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.224988][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.225614][ T4986] inet_sendmsg+0x154/0x284 [ 84.226334][ T4986] __sys_sendto+0x30c/0x420 [ 84.227069][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.227902][ T4986] invoke_syscall+0x98/0x2b0 [ 84.228721][ T4986] el0_svc_common+0x138/0x258 [ 84.229501][ T4986] do_el0_svc+0x58/0x13c [ 84.230140][ T4986] el0_svc+0x78/0x1d0 [ 84.230813][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.231575][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.233112][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.234854][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.235903][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.237508][ T4986] Call trace: [ 84.238015][ T4986] dump_backtrace+0x0/0x458 [ 84.238781][ T4986] show_stack+0x2c/0x3c [ 84.239451][ T4986] __dump_stack+0x30/0x40 [ 84.240150][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.240953][ T4986] dump_stack+0x1c/0x5c [ 84.241622][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.242489][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.243193][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.243904][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.244577][ T4986] inet_sendmsg+0x154/0x284 [ 84.245239][ T4986] __sys_sendto+0x30c/0x420 [ 84.245939][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.246661][ T4986] invoke_syscall+0x98/0x2b0 [ 84.247383][ T4986] el0_svc_common+0x138/0x258 [ 84.248023][ T4986] do_el0_svc+0x58/0x13c [ 84.248680][ T4986] el0_svc+0x78/0x1d0 [ 84.249282][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.250090][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.251081][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.253703][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.254826][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.256455][ T4986] Call trace: [ 84.256953][ T4986] dump_backtrace+0x0/0x458 [ 84.257648][ T4986] show_stack+0x2c/0x3c [ 84.258305][ T4986] __dump_stack+0x30/0x40 [ 84.258956][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.259710][ T4986] dump_stack+0x1c/0x5c [ 84.260382][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.261365][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.262138][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.262911][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.263632][ T4986] inet_sendmsg+0x154/0x284 [ 84.264321][ T4986] __sys_sendto+0x30c/0x420 [ 84.265026][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.265772][ T4986] invoke_syscall+0x98/0x2b0 [ 84.266528][ T4986] el0_svc_common+0x138/0x258 [ 84.267270][ T4986] do_el0_svc+0x58/0x13c [ 84.267966][ T4986] el0_svc+0x78/0x1d0 [ 84.268636][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.269404][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.270345][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.272850][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.273991][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.275674][ T4986] Call trace: [ 84.276211][ T4986] dump_backtrace+0x0/0x458 [ 84.276932][ T4986] show_stack+0x2c/0x3c [ 84.277614][ T4986] __dump_stack+0x30/0x40 [ 84.278291][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.278971][ T4986] dump_stack+0x1c/0x5c [ 84.279705][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.280571][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.281372][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.282153][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.282932][ T4986] inet_sendmsg+0x154/0x284 [ 84.283678][ T4986] __sys_sendto+0x30c/0x420 [ 84.284400][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.285175][ T4986] invoke_syscall+0x98/0x2b0 [ 84.285963][ T4986] el0_svc_common+0x138/0x258 [ 84.286742][ T4986] do_el0_svc+0x58/0x13c [ 84.287399][ T4986] el0_svc+0x78/0x1d0 [ 84.288043][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.288913][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.289886][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.291480][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.292551][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.294002][ T4986] Call trace: [ 84.294486][ T4986] dump_backtrace+0x0/0x458 [ 84.295181][ T4986] show_stack+0x2c/0x3c [ 84.295862][ T4986] __dump_stack+0x30/0x40 [ 84.296544][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.297268][ T4986] dump_stack+0x1c/0x5c [ 84.297894][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.298801][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.299583][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.300339][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.301057][ T4986] inet_sendmsg+0x154/0x284 [ 84.301780][ T4986] __sys_sendto+0x30c/0x420 [ 84.302454][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.303197][ T4986] invoke_syscall+0x98/0x2b0 [ 84.303881][ T4986] el0_svc_common+0x138/0x258 [ 84.304541][ T4986] do_el0_svc+0x58/0x13c [ 84.305239][ T4986] el0_svc+0x78/0x1d0 [ 84.305894][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.306724][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.308958][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.310805][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.311889][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.313454][ T4986] Call trace: [ 84.313963][ T4986] dump_backtrace+0x0/0x458 [ 84.314713][ T4986] show_stack+0x2c/0x3c [ 84.315391][ T4986] __dump_stack+0x30/0x40 [ 84.316053][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.316755][ T4986] dump_stack+0x1c/0x5c [ 84.317401][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.318212][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.318968][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.319775][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.320541][ T4986] inet_sendmsg+0x154/0x284 [ 84.321312][ T4986] __sys_sendto+0x30c/0x420 [ 84.322045][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.322822][ T4986] invoke_syscall+0x98/0x2b0 [ 84.323586][ T4986] el0_svc_common+0x138/0x258 [ 84.324379][ T4986] do_el0_svc+0x58/0x13c [ 84.325098][ T4986] el0_svc+0x78/0x1d0 [ 84.325709][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.326555][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.328626][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.330548][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.331681][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.333456][ T4986] Call trace: [ 84.334000][ T4986] dump_backtrace+0x0/0x458 [ 84.334720][ T4986] show_stack+0x2c/0x3c [ 84.335396][ T4986] __dump_stack+0x30/0x40 [ 84.336057][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.336761][ T4986] dump_stack+0x1c/0x5c [ 84.337488][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.338343][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.339087][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.339878][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.340644][ T4986] inet_sendmsg+0x154/0x284 [ 84.341399][ T4986] __sys_sendto+0x30c/0x420 [ 84.342168][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.342943][ T4986] invoke_syscall+0x98/0x2b0 [ 84.343669][ T4986] el0_svc_common+0x138/0x258 [ 84.344410][ T4986] do_el0_svc+0x58/0x13c [ 84.345104][ T4986] el0_svc+0x78/0x1d0 [ 84.345746][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.346597][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.348956][ T4986] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.350773][ T4986] CPU: 1 PID: 4986 Comm: syz.0.39 Not tainted syzkaller #0 [ 84.351869][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.353385][ T4986] Call trace: [ 84.353890][ T4986] dump_backtrace+0x0/0x458 [ 84.354641][ T4986] show_stack+0x2c/0x3c [ 84.355332][ T4986] __dump_stack+0x30/0x40 [ 84.356019][ T4986] dump_stack_lvl+0xf4/0x15c [ 84.356764][ T4986] dump_stack+0x1c/0x5c [ 84.357455][ T4986] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.358291][ T4986] dccp_xmit_packet+0x298/0x448 [ 84.359118][ T4986] dccp_write_xmit+0x118/0x1d0 [ 84.359881][ T4986] dccp_sendmsg+0x550/0x8b8 [ 84.360631][ T4986] inet_sendmsg+0x154/0x284 [ 84.361378][ T4986] __sys_sendto+0x30c/0x420 [ 84.362148][ T4986] __arm64_sys_sendto+0xd8/0xf8 [ 84.362923][ T4986] invoke_syscall+0x98/0x2b0 [ 84.363634][ T4986] el0_svc_common+0x138/0x258 [ 84.364447][ T4986] do_el0_svc+0x58/0x13c [ 84.365165][ T4986] el0_svc+0x78/0x1d0 [ 84.365851][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 84.366657][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 84.379709][ T4988] dccp_xmit_packet: Payload too large (65475) for featneg. [ 84.388311][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.390089][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.391288][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.393067][ T4988] Call trace: [ 84.393636][ T4988] dump_backtrace+0x0/0x458 [ 84.394380][ T4988] show_stack+0x2c/0x3c [ 84.395013][ T4988] __dump_stack+0x30/0x40 [ 84.395759][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.396503][ T4988] dump_stack+0x1c/0x5c [ 84.397181][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.398083][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.398860][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.399652][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.400371][ T4988] inet_sendmsg+0x154/0x284 [ 84.401069][ T4988] __sys_sendto+0x30c/0x420 [ 84.401768][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.402531][ T4988] invoke_syscall+0x98/0x2b0 [ 84.403264][ T4988] el0_svc_common+0x138/0x258 [ 84.404032][ T4988] do_el0_svc+0x58/0x13c [ 84.404683][ T4988] el0_svc+0x78/0x1d0 [ 84.405307][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.406117][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.409416][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.410933][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.411962][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.413395][ T4988] Call trace: [ 84.413924][ T4988] dump_backtrace+0x0/0x458 [ 84.414672][ T4988] show_stack+0x2c/0x3c [ 84.415351][ T4988] __dump_stack+0x30/0x40 [ 84.416040][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.416801][ T4988] dump_stack+0x1c/0x5c [ 84.417451][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.418301][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.419056][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.419780][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.420548][ T4988] inet_sendmsg+0x154/0x284 [ 84.421263][ T4988] __sys_sendto+0x30c/0x420 [ 84.421990][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.422799][ T4988] invoke_syscall+0x98/0x2b0 [ 84.423512][ T4988] el0_svc_common+0x138/0x258 [ 84.424222][ T4988] do_el0_svc+0x58/0x13c [ 84.424950][ T4988] el0_svc+0x78/0x1d0 [ 84.425607][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.426450][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.429738][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.431697][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.432863][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.434441][ T4988] Call trace: [ 84.434921][ T4988] dump_backtrace+0x0/0x458 [ 84.435660][ T4988] show_stack+0x2c/0x3c [ 84.436347][ T4988] __dump_stack+0x30/0x40 [ 84.437023][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.437797][ T4988] dump_stack+0x1c/0x5c [ 84.438474][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.439304][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.440052][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.440802][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.441541][ T4988] inet_sendmsg+0x154/0x284 [ 84.442285][ T4988] __sys_sendto+0x30c/0x420 [ 84.443028][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.443845][ T4988] invoke_syscall+0x98/0x2b0 [ 84.444581][ T4988] el0_svc_common+0x138/0x258 [ 84.445338][ T4988] do_el0_svc+0x58/0x13c [ 84.446038][ T4988] el0_svc+0x78/0x1d0 [ 84.446715][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.447524][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.451055][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.453050][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.454229][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.455843][ T4988] Call trace: [ 84.456347][ T4988] dump_backtrace+0x0/0x458 [ 84.457074][ T4988] show_stack+0x2c/0x3c [ 84.457705][ T4988] __dump_stack+0x30/0x40 [ 84.458392][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.459104][ T4988] dump_stack+0x1c/0x5c [ 84.459742][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.460543][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.461258][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.462032][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.462729][ T4988] inet_sendmsg+0x154/0x284 [ 84.463411][ T4988] __sys_sendto+0x30c/0x420 [ 84.464128][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.464949][ T4988] invoke_syscall+0x98/0x2b0 [ 84.465694][ T4988] el0_svc_common+0x138/0x258 [ 84.466492][ T4988] do_el0_svc+0x58/0x13c [ 84.467197][ T4988] el0_svc+0x78/0x1d0 [ 84.467803][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.468583][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.471232][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.473163][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.474340][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.475950][ T4988] Call trace: [ 84.476458][ T4988] dump_backtrace+0x0/0x458 [ 84.477188][ T4988] show_stack+0x2c/0x3c [ 84.477819][ T4988] __dump_stack+0x30/0x40 [ 84.478493][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.479227][ T4988] dump_stack+0x1c/0x5c [ 84.479927][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.480769][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.481499][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.482286][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.482994][ T4988] inet_sendmsg+0x154/0x284 [ 84.483682][ T4988] __sys_sendto+0x30c/0x420 [ 84.484485][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.485296][ T4988] invoke_syscall+0x98/0x2b0 [ 84.486090][ T4988] el0_svc_common+0x138/0x258 [ 84.486815][ T4988] do_el0_svc+0x58/0x13c [ 84.487470][ T4988] el0_svc+0x78/0x1d0 [ 84.488051][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.488795][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.491440][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.493244][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.494356][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.496003][ T4988] Call trace: [ 84.496609][ T4988] dump_backtrace+0x0/0x458 [ 84.497383][ T4988] show_stack+0x2c/0x3c [ 84.498137][ T4988] __dump_stack+0x30/0x40 [ 84.498810][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.499544][ T4988] dump_stack+0x1c/0x5c [ 84.500194][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.501093][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.501866][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.502649][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.503401][ T4988] inet_sendmsg+0x154/0x284 [ 84.504045][ T4988] __sys_sendto+0x30c/0x420 [ 84.504800][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.505587][ T4988] invoke_syscall+0x98/0x2b0 [ 84.506295][ T4988] el0_svc_common+0x138/0x258 [ 84.507109][ T4988] do_el0_svc+0x58/0x13c [ 84.507776][ T4988] el0_svc+0x78/0x1d0 [ 84.508496][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.509325][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.511676][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.513935][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.515143][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.516801][ T4988] Call trace: [ 84.517331][ T4988] dump_backtrace+0x0/0x458 [ 84.518111][ T4988] show_stack+0x2c/0x3c [ 84.518783][ T4988] __dump_stack+0x30/0x40 [ 84.519510][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.520272][ T4988] dump_stack+0x1c/0x5c [ 84.520923][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.521816][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.522557][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.523335][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.524112][ T4988] inet_sendmsg+0x154/0x284 [ 84.524914][ T4988] __sys_sendto+0x30c/0x420 [ 84.525669][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.526462][ T4988] invoke_syscall+0x98/0x2b0 [ 84.527231][ T4988] el0_svc_common+0x138/0x258 [ 84.527985][ T4988] do_el0_svc+0x58/0x13c [ 84.528721][ T4988] el0_svc+0x78/0x1d0 [ 84.529391][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.530240][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.531683][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.533466][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.534667][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.536312][ T4988] Call trace: [ 84.536848][ T4988] dump_backtrace+0x0/0x458 [ 84.537607][ T4988] show_stack+0x2c/0x3c [ 84.538239][ T4988] __dump_stack+0x30/0x40 [ 84.538943][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.539681][ T4988] dump_stack+0x1c/0x5c [ 84.540353][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.541168][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.541929][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.542654][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.543339][ T4988] inet_sendmsg+0x154/0x284 [ 84.544081][ T4988] __sys_sendto+0x30c/0x420 [ 84.544800][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.545581][ T4988] invoke_syscall+0x98/0x2b0 [ 84.546304][ T4988] el0_svc_common+0x138/0x258 [ 84.547108][ T4988] do_el0_svc+0x58/0x13c [ 84.547819][ T4988] el0_svc+0x78/0x1d0 [ 84.548467][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.549267][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.550695][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.552480][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.553544][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.555117][ T4988] Call trace: [ 84.555665][ T4988] dump_backtrace+0x0/0x458 [ 84.556386][ T4988] show_stack+0x2c/0x3c [ 84.557089][ T4988] __dump_stack+0x30/0x40 [ 84.557791][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.558568][ T4988] dump_stack+0x1c/0x5c [ 84.559262][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.560144][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.560939][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.561723][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.562442][ T4988] inet_sendmsg+0x154/0x284 [ 84.563185][ T4988] __sys_sendto+0x30c/0x420 [ 84.563910][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.564648][ T4988] invoke_syscall+0x98/0x2b0 [ 84.565423][ T4988] el0_svc_common+0x138/0x258 [ 84.566130][ T4988] do_el0_svc+0x58/0x13c [ 84.566749][ T4988] el0_svc+0x78/0x1d0 [ 84.567355][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.568166][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.569597][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.571305][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.572527][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.574189][ T4988] Call trace: [ 84.574661][ T4988] dump_backtrace+0x0/0x458 [ 84.575374][ T4988] show_stack+0x2c/0x3c [ 84.576014][ T4988] __dump_stack+0x30/0x40 [ 84.576659][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.577439][ T4988] dump_stack+0x1c/0x5c [ 84.578150][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.579083][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.579892][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.580615][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.581382][ T4988] inet_sendmsg+0x154/0x284 [ 84.582099][ T4988] __sys_sendto+0x30c/0x420 [ 84.582788][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.583544][ T4988] invoke_syscall+0x98/0x2b0 [ 84.584253][ T4988] el0_svc_common+0x138/0x258 [ 84.584968][ T4988] do_el0_svc+0x58/0x13c [ 84.585677][ T4988] el0_svc+0x78/0x1d0 [ 84.586330][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.587140][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.589164][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.590834][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.592002][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.593588][ T4988] Call trace: [ 84.594113][ T4988] dump_backtrace+0x0/0x458 [ 84.594824][ T4988] show_stack+0x2c/0x3c [ 84.595567][ T4988] __dump_stack+0x30/0x40 [ 84.596314][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.597073][ T4988] dump_stack+0x1c/0x5c [ 84.597756][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.598605][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.599393][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.600089][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.600855][ T4988] inet_sendmsg+0x154/0x284 [ 84.601589][ T4988] __sys_sendto+0x30c/0x420 [ 84.602304][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.603098][ T4988] invoke_syscall+0x98/0x2b0 [ 84.603851][ T4988] el0_svc_common+0x138/0x258 [ 84.604588][ T4988] do_el0_svc+0x58/0x13c [ 84.605264][ T4988] el0_svc+0x78/0x1d0 [ 84.605905][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.606683][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.608818][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.610474][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.611535][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.613178][ T4988] Call trace: [ 84.613745][ T4988] dump_backtrace+0x0/0x458 [ 84.614471][ T4988] show_stack+0x2c/0x3c [ 84.615111][ T4988] __dump_stack+0x30/0x40 [ 84.615843][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.616545][ T4988] dump_stack+0x1c/0x5c [ 84.617143][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.618117][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.618923][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.619660][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.620403][ T4988] inet_sendmsg+0x154/0x284 [ 84.621169][ T4988] __sys_sendto+0x30c/0x420 [ 84.621885][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.622681][ T4988] invoke_syscall+0x98/0x2b0 [ 84.623511][ T4988] el0_svc_common+0x138/0x258 [ 84.624346][ T4988] do_el0_svc+0x58/0x13c [ 84.625054][ T4988] el0_svc+0x78/0x1d0 [ 84.625689][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.626489][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.629375][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.631003][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.632129][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.633732][ T4988] Call trace: [ 84.634233][ T4988] dump_backtrace+0x0/0x458 [ 84.634912][ T4988] show_stack+0x2c/0x3c [ 84.635564][ T4988] __dump_stack+0x30/0x40 [ 84.636215][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.636914][ T4988] dump_stack+0x1c/0x5c [ 84.637557][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.638388][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.639144][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.639903][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.640617][ T4988] inet_sendmsg+0x154/0x284 [ 84.641305][ T4988] __sys_sendto+0x30c/0x420 [ 84.642015][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.642789][ T4988] invoke_syscall+0x98/0x2b0 [ 84.643504][ T4988] el0_svc_common+0x138/0x258 [ 84.644223][ T4988] do_el0_svc+0x58/0x13c [ 84.644880][ T4988] el0_svc+0x78/0x1d0 [ 84.645538][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.646357][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.648023][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.649830][ T4988] CPU: 1 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.650958][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.652554][ T4988] Call trace: [ 84.653070][ T4988] dump_backtrace+0x0/0x458 [ 84.653767][ T4988] show_stack+0x2c/0x3c [ 84.654415][ T4988] __dump_stack+0x30/0x40 [ 84.655050][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.655821][ T4988] dump_stack+0x1c/0x5c [ 84.656423][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.657170][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.657943][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.658707][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.659425][ T4988] inet_sendmsg+0x154/0x284 [ 84.660198][ T4988] __sys_sendto+0x30c/0x420 [ 84.660904][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.661627][ T4988] invoke_syscall+0x98/0x2b0 [ 84.662434][ T4988] el0_svc_common+0x138/0x258 [ 84.663266][ T4988] do_el0_svc+0x58/0x13c [ 84.663945][ T4988] el0_svc+0x78/0x1d0 [ 84.664552][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.665378][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.667327][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.668803][ T4988] CPU: 1 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.669966][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.671586][ T4988] Call trace: [ 84.672099][ T4988] dump_backtrace+0x0/0x458 [ 84.672826][ T4988] show_stack+0x2c/0x3c [ 84.673525][ T4988] __dump_stack+0x30/0x40 [ 84.674229][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.674988][ T4988] dump_stack+0x1c/0x5c [ 84.675653][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.676509][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.677232][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.677899][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.678545][ T4988] inet_sendmsg+0x154/0x284 [ 84.679195][ T4988] __sys_sendto+0x30c/0x420 [ 84.679851][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.680612][ T4988] invoke_syscall+0x98/0x2b0 [ 84.681296][ T4988] el0_svc_common+0x138/0x258 [ 84.681996][ T4988] do_el0_svc+0x58/0x13c [ 84.682717][ T4988] el0_svc+0x78/0x1d0 [ 84.683314][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.684066][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.686728][ T4988] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.688557][ T4988] CPU: 0 PID: 4988 Comm: syz.0.40 Not tainted syzkaller #0 [ 84.689709][ T4988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.691189][ T4988] Call trace: [ 84.691701][ T4988] dump_backtrace+0x0/0x458 [ 84.692458][ T4988] show_stack+0x2c/0x3c [ 84.693110][ T4988] __dump_stack+0x30/0x40 [ 84.693809][ T4988] dump_stack_lvl+0xf4/0x15c [ 84.694532][ T4988] dump_stack+0x1c/0x5c [ 84.695217][ T4988] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.696053][ T4988] dccp_xmit_packet+0x298/0x448 [ 84.696793][ T4988] dccp_write_xmit+0x118/0x1d0 [ 84.697471][ T4988] dccp_sendmsg+0x550/0x8b8 [ 84.698100][ T4988] inet_sendmsg+0x154/0x284 [ 84.698795][ T4988] __sys_sendto+0x30c/0x420 [ 84.699535][ T4988] __arm64_sys_sendto+0xd8/0xf8 [ 84.700356][ T4988] invoke_syscall+0x98/0x2b0 [ 84.701167][ T4988] el0_svc_common+0x138/0x258 [ 84.701921][ T4988] do_el0_svc+0x58/0x13c [ 84.702675][ T4988] el0_svc+0x78/0x1d0 [ 84.703380][ T4988] el0t_64_sync_handler+0xcc/0xe4 [ 84.704219][ T4988] el0t_64_sync+0x1a0/0x1a4 [ 84.716270][ T4990] dccp_xmit_packet: Payload too large (65475) for featneg. [ 84.723669][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.725453][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.726579][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.728245][ T4990] Call trace: [ 84.728772][ T4990] dump_backtrace+0x0/0x458 [ 84.729542][ T4990] show_stack+0x2c/0x3c [ 84.730224][ T4990] __dump_stack+0x30/0x40 [ 84.730967][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.731708][ T4990] dump_stack+0x1c/0x5c [ 84.732404][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.733271][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.734033][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.734777][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.735508][ T4990] inet_sendmsg+0x154/0x284 [ 84.736215][ T4990] __sys_sendto+0x30c/0x420 [ 84.736910][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.737655][ T4990] invoke_syscall+0x98/0x2b0 [ 84.738374][ T4990] el0_svc_common+0x138/0x258 [ 84.739095][ T4990] do_el0_svc+0x58/0x13c [ 84.739759][ T4990] el0_svc+0x78/0x1d0 [ 84.740414][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.741265][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.743063][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.744628][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.745677][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.747106][ T4990] Call trace: [ 84.747638][ T4990] dump_backtrace+0x0/0x458 [ 84.748370][ T4990] show_stack+0x2c/0x3c [ 84.749000][ T4990] __dump_stack+0x30/0x40 [ 84.749677][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.750421][ T4990] dump_stack+0x1c/0x5c [ 84.751078][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.751938][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.752711][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.753470][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.754185][ T4990] inet_sendmsg+0x154/0x284 [ 84.754877][ T4990] __sys_sendto+0x30c/0x420 [ 84.755598][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.756356][ T4990] invoke_syscall+0x98/0x2b0 [ 84.757093][ T4990] el0_svc_common+0x138/0x258 [ 84.757834][ T4990] do_el0_svc+0x58/0x13c [ 84.758529][ T4990] el0_svc+0x78/0x1d0 [ 84.759161][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.759998][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.760973][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.762782][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.763892][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.765484][ T4990] Call trace: [ 84.766018][ T4990] dump_backtrace+0x0/0x458 [ 84.766765][ T4990] show_stack+0x2c/0x3c [ 84.767437][ T4990] __dump_stack+0x30/0x40 [ 84.768114][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.768862][ T4990] dump_stack+0x1c/0x5c [ 84.769512][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.770403][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.771181][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.771950][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.772632][ T4990] inet_sendmsg+0x154/0x284 [ 84.773393][ T4990] __sys_sendto+0x30c/0x420 [ 84.774124][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.774913][ T4990] invoke_syscall+0x98/0x2b0 [ 84.775695][ T4990] el0_svc_common+0x138/0x258 [ 84.776476][ T4990] do_el0_svc+0x58/0x13c [ 84.777165][ T4990] el0_svc+0x78/0x1d0 [ 84.777849][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.778720][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.779653][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.781354][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.782489][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.784221][ T4990] Call trace: [ 84.784690][ T4990] dump_backtrace+0x0/0x458 [ 84.785336][ T4990] show_stack+0x2c/0x3c [ 84.785920][ T4990] __dump_stack+0x30/0x40 [ 84.786548][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.787198][ T4990] dump_stack+0x1c/0x5c [ 84.787871][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.788769][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.789519][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.790271][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.790936][ T4990] inet_sendmsg+0x154/0x284 [ 84.791653][ T4990] __sys_sendto+0x30c/0x420 [ 84.792343][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.793068][ T4990] invoke_syscall+0x98/0x2b0 [ 84.793770][ T4990] el0_svc_common+0x138/0x258 [ 84.794493][ T4990] do_el0_svc+0x58/0x13c [ 84.795224][ T4990] el0_svc+0x78/0x1d0 [ 84.795911][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.796720][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.797590][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.799250][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.800370][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.801866][ T4990] Call trace: [ 84.802358][ T4990] dump_backtrace+0x0/0x458 [ 84.803136][ T4990] show_stack+0x2c/0x3c [ 84.803730][ T4990] __dump_stack+0x30/0x40 [ 84.804380][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.805100][ T4990] dump_stack+0x1c/0x5c [ 84.805805][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.806664][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.807449][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.808174][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.808833][ T4990] inet_sendmsg+0x154/0x284 [ 84.809573][ T4990] __sys_sendto+0x30c/0x420 [ 84.810346][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.811116][ T4990] invoke_syscall+0x98/0x2b0 [ 84.811904][ T4990] el0_svc_common+0x138/0x258 [ 84.812657][ T4990] do_el0_svc+0x58/0x13c [ 84.813326][ T4990] el0_svc+0x78/0x1d0 [ 84.813967][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.814768][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.815797][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.817495][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.818661][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.820311][ T4990] Call trace: [ 84.820882][ T4990] dump_backtrace+0x0/0x458 [ 84.821579][ T4990] show_stack+0x2c/0x3c [ 84.822265][ T4990] __dump_stack+0x30/0x40 [ 84.822901][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.823602][ T4990] dump_stack+0x1c/0x5c [ 84.824231][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.825053][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.825842][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.826568][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.827243][ T4990] inet_sendmsg+0x154/0x284 [ 84.827958][ T4990] __sys_sendto+0x30c/0x420 [ 84.828702][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.829512][ T4990] invoke_syscall+0x98/0x2b0 [ 84.830259][ T4990] el0_svc_common+0x138/0x258 [ 84.830980][ T4990] do_el0_svc+0x58/0x13c [ 84.831632][ T4990] el0_svc+0x78/0x1d0 [ 84.832281][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.833075][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.834190][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.835993][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.837259][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.838903][ T4990] Call trace: [ 84.839419][ T4990] dump_backtrace+0x0/0x458 [ 84.840149][ T4990] show_stack+0x2c/0x3c [ 84.840832][ T4990] __dump_stack+0x30/0x40 [ 84.841518][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.842287][ T4990] dump_stack+0x1c/0x5c [ 84.842995][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.843926][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.844695][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.845464][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.846115][ T4990] inet_sendmsg+0x154/0x284 [ 84.846864][ T4990] __sys_sendto+0x30c/0x420 [ 84.847619][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.848439][ T4990] invoke_syscall+0x98/0x2b0 [ 84.849193][ T4990] el0_svc_common+0x138/0x258 [ 84.849854][ T4990] do_el0_svc+0x58/0x13c [ 84.850547][ T4990] el0_svc+0x78/0x1d0 [ 84.851252][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.852069][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.853320][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.855008][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.856167][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.857793][ T4990] Call trace: [ 84.858292][ T4990] dump_backtrace+0x0/0x458 [ 84.859004][ T4990] show_stack+0x2c/0x3c [ 84.859683][ T4990] __dump_stack+0x30/0x40 [ 84.860334][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.860981][ T4990] dump_stack+0x1c/0x5c [ 84.861568][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.862354][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.863051][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.863862][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.864585][ T4990] inet_sendmsg+0x154/0x284 [ 84.865294][ T4990] __sys_sendto+0x30c/0x420 [ 84.866012][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.866795][ T4990] invoke_syscall+0x98/0x2b0 [ 84.867520][ T4990] el0_svc_common+0x138/0x258 [ 84.868238][ T4990] do_el0_svc+0x58/0x13c [ 84.868943][ T4990] el0_svc+0x78/0x1d0 [ 84.869561][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.870343][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.871326][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.873088][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.874140][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.875508][ T4990] Call trace: [ 84.875960][ T4990] dump_backtrace+0x0/0x458 [ 84.876689][ T4990] show_stack+0x2c/0x3c [ 84.877395][ T4990] __dump_stack+0x30/0x40 [ 84.878077][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.878767][ T4990] dump_stack+0x1c/0x5c [ 84.879373][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.880198][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.880947][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.881729][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.882473][ T4990] inet_sendmsg+0x154/0x284 [ 84.883191][ T4990] __sys_sendto+0x30c/0x420 [ 84.883870][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.884628][ T4990] invoke_syscall+0x98/0x2b0 [ 84.885362][ T4990] el0_svc_common+0x138/0x258 [ 84.886055][ T4990] do_el0_svc+0x58/0x13c [ 84.886686][ T4990] el0_svc+0x78/0x1d0 [ 84.887351][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.888171][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.889011][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.890735][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.891911][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.893514][ T4990] Call trace: [ 84.894016][ T4990] dump_backtrace+0x0/0x458 [ 84.894756][ T4990] show_stack+0x2c/0x3c [ 84.895386][ T4990] __dump_stack+0x30/0x40 [ 84.896067][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.896825][ T4990] dump_stack+0x1c/0x5c [ 84.897464][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.898341][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.899115][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.899845][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.900598][ T4990] inet_sendmsg+0x154/0x284 [ 84.901246][ T4990] __sys_sendto+0x30c/0x420 [ 84.901873][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.902625][ T4990] invoke_syscall+0x98/0x2b0 [ 84.903350][ T4990] el0_svc_common+0x138/0x258 [ 84.904073][ T4990] do_el0_svc+0x58/0x13c [ 84.904806][ T4990] el0_svc+0x78/0x1d0 [ 84.905484][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.906333][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.907292][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.908949][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.910100][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.911596][ T4990] Call trace: [ 84.912124][ T4990] dump_backtrace+0x0/0x458 [ 84.912841][ T4990] show_stack+0x2c/0x3c [ 84.913506][ T4990] __dump_stack+0x30/0x40 [ 84.914174][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.914879][ T4990] dump_stack+0x1c/0x5c [ 84.915551][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.916376][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.917187][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.917973][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.918687][ T4990] inet_sendmsg+0x154/0x284 [ 84.919404][ T4990] __sys_sendto+0x30c/0x420 [ 84.920086][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.920874][ T4990] invoke_syscall+0x98/0x2b0 [ 84.921598][ T4990] el0_svc_common+0x138/0x258 [ 84.922380][ T4990] do_el0_svc+0x58/0x13c [ 84.923085][ T4990] el0_svc+0x78/0x1d0 [ 84.923763][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.924559][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.925545][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.927038][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.928160][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.929756][ T4990] Call trace: [ 84.930239][ T4990] dump_backtrace+0x0/0x458 [ 84.930901][ T4990] show_stack+0x2c/0x3c [ 84.931532][ T4990] __dump_stack+0x30/0x40 [ 84.932200][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.932926][ T4990] dump_stack+0x1c/0x5c [ 84.933623][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.934574][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.935340][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.936097][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.936808][ T4990] inet_sendmsg+0x154/0x284 [ 84.937592][ T4990] __sys_sendto+0x30c/0x420 [ 84.938342][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.939111][ T4990] invoke_syscall+0x98/0x2b0 [ 84.939855][ T4990] el0_svc_common+0x138/0x258 [ 84.940586][ T4990] do_el0_svc+0x58/0x13c [ 84.941269][ T4990] el0_svc+0x78/0x1d0 [ 84.941881][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.942652][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.943503][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.945280][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.946325][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.947924][ T4990] Call trace: [ 84.948464][ T4990] dump_backtrace+0x0/0x458 [ 84.949200][ T4990] show_stack+0x2c/0x3c [ 84.949862][ T4990] __dump_stack+0x30/0x40 [ 84.950547][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.951217][ T4990] dump_stack+0x1c/0x5c [ 84.951884][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.952722][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.953450][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.954178][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.954860][ T4990] inet_sendmsg+0x154/0x284 [ 84.955647][ T4990] __sys_sendto+0x30c/0x420 [ 84.956413][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.957221][ T4990] invoke_syscall+0x98/0x2b0 [ 84.957985][ T4990] el0_svc_common+0x138/0x258 [ 84.958816][ T4990] do_el0_svc+0x58/0x13c [ 84.959501][ T4990] el0_svc+0x78/0x1d0 [ 84.960171][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.960975][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.962242][ T4990] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 84.963854][ T4990] CPU: 0 PID: 4990 Comm: syz.0.41 Not tainted syzkaller #0 [ 84.964983][ T4990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.966402][ T4990] Call trace: [ 84.966885][ T4990] dump_backtrace+0x0/0x458 [ 84.967622][ T4990] show_stack+0x2c/0x3c [ 84.968304][ T4990] __dump_stack+0x30/0x40 [ 84.969051][ T4990] dump_stack_lvl+0xf4/0x15c [ 84.969822][ T4990] dump_stack+0x1c/0x5c [ 84.970471][ T4990] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 84.971421][ T4990] dccp_xmit_packet+0x298/0x448 [ 84.972227][ T4990] dccp_write_xmit+0x118/0x1d0 [ 84.973002][ T4990] dccp_sendmsg+0x550/0x8b8 [ 84.973744][ T4990] inet_sendmsg+0x154/0x284 [ 84.974442][ T4990] __sys_sendto+0x30c/0x420 [ 84.975162][ T4990] __arm64_sys_sendto+0xd8/0xf8 [ 84.975963][ T4990] invoke_syscall+0x98/0x2b0 [ 84.976686][ T4990] el0_svc_common+0x138/0x258 [ 84.977394][ T4990] do_el0_svc+0x58/0x13c [ 84.978070][ T4990] el0_svc+0x78/0x1d0 [ 84.978733][ T4990] el0t_64_sync_handler+0xcc/0xe4 [ 84.979541][ T4990] el0t_64_sync+0x1a0/0x1a4 [ 84.991100][ T4992] dccp_xmit_packet: Payload too large (65475) for featneg. [ 84.998444][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.000253][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.001341][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.003023][ T4992] Call trace: [ 85.003583][ T4992] dump_backtrace+0x0/0x458 [ 85.004246][ T4992] show_stack+0x2c/0x3c [ 85.004881][ T4992] __dump_stack+0x30/0x40 [ 85.005586][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.006350][ T4992] dump_stack+0x1c/0x5c [ 85.007007][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.007877][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.008667][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.009513][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.010262][ T4992] inet_sendmsg+0x154/0x284 [ 85.011010][ T4992] __sys_sendto+0x30c/0x420 [ 85.011733][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.012524][ T4992] invoke_syscall+0x98/0x2b0 [ 85.013274][ T4992] el0_svc_common+0x138/0x258 [ 85.014048][ T4992] do_el0_svc+0x58/0x13c [ 85.014777][ T4992] el0_svc+0x78/0x1d0 [ 85.015451][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.016254][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.017382][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.019167][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.020305][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.021775][ T4992] Call trace: [ 85.022299][ T4992] dump_backtrace+0x0/0x458 [ 85.023012][ T4992] show_stack+0x2c/0x3c [ 85.023673][ T4992] __dump_stack+0x30/0x40 [ 85.024320][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.025024][ T4992] dump_stack+0x1c/0x5c [ 85.025635][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.026416][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.027108][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.027798][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.028449][ T4992] inet_sendmsg+0x154/0x284 [ 85.029130][ T4992] __sys_sendto+0x30c/0x420 [ 85.029815][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.030542][ T4992] invoke_syscall+0x98/0x2b0 [ 85.031302][ T4992] el0_svc_common+0x138/0x258 [ 85.032053][ T4992] do_el0_svc+0x58/0x13c [ 85.032724][ T4992] el0_svc+0x78/0x1d0 [ 85.033317][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.034129][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.035042][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.036764][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.037945][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.039468][ T4992] Call trace: [ 85.039960][ T4992] dump_backtrace+0x0/0x458 [ 85.040604][ T4992] show_stack+0x2c/0x3c [ 85.041338][ T4992] __dump_stack+0x30/0x40 [ 85.042026][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.042830][ T4992] dump_stack+0x1c/0x5c [ 85.043476][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.044323][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.045105][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.045890][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.046610][ T4992] inet_sendmsg+0x154/0x284 [ 85.047323][ T4992] __sys_sendto+0x30c/0x420 [ 85.048024][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.048778][ T4992] invoke_syscall+0x98/0x2b0 [ 85.049546][ T4992] el0_svc_common+0x138/0x258 [ 85.050352][ T4992] do_el0_svc+0x58/0x13c [ 85.051076][ T4992] el0_svc+0x78/0x1d0 [ 85.051759][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.052593][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.053891][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.055509][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.056612][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.058260][ T4992] Call trace: [ 85.058777][ T4992] dump_backtrace+0x0/0x458 [ 85.059422][ T4992] show_stack+0x2c/0x3c [ 85.060079][ T4992] __dump_stack+0x30/0x40 [ 85.060764][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.061502][ T4992] dump_stack+0x1c/0x5c [ 85.062244][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.063137][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.063922][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.064682][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.065430][ T4992] inet_sendmsg+0x154/0x284 [ 85.066156][ T4992] __sys_sendto+0x30c/0x420 [ 85.066825][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.067543][ T4992] invoke_syscall+0x98/0x2b0 [ 85.068308][ T4992] el0_svc_common+0x138/0x258 [ 85.069035][ T4992] do_el0_svc+0x58/0x13c [ 85.069718][ T4992] el0_svc+0x78/0x1d0 [ 85.070379][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.071146][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.072083][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.073788][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.075004][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.076564][ T4992] Call trace: [ 85.077029][ T4992] dump_backtrace+0x0/0x458 [ 85.077727][ T4992] show_stack+0x2c/0x3c [ 85.078408][ T4992] __dump_stack+0x30/0x40 [ 85.079115][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.079902][ T4992] dump_stack+0x1c/0x5c [ 85.080564][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.081394][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.082141][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.082838][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.083527][ T4992] inet_sendmsg+0x154/0x284 [ 85.084283][ T4992] __sys_sendto+0x30c/0x420 [ 85.085049][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.085850][ T4992] invoke_syscall+0x98/0x2b0 [ 85.086587][ T4992] el0_svc_common+0x138/0x258 [ 85.087299][ T4992] do_el0_svc+0x58/0x13c [ 85.087937][ T4992] el0_svc+0x78/0x1d0 [ 85.088584][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.089382][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.090313][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.092048][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.093086][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.094537][ T4992] Call trace: [ 85.095025][ T4992] dump_backtrace+0x0/0x458 [ 85.095665][ T4992] show_stack+0x2c/0x3c [ 85.096240][ T4992] __dump_stack+0x30/0x40 [ 85.096837][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.097487][ T4992] dump_stack+0x1c/0x5c [ 85.098103][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.098987][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.099762][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.100481][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.101157][ T4992] inet_sendmsg+0x154/0x284 [ 85.101884][ T4992] __sys_sendto+0x30c/0x420 [ 85.102577][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.103366][ T4992] invoke_syscall+0x98/0x2b0 [ 85.104077][ T4992] el0_svc_common+0x138/0x258 [ 85.104839][ T4992] do_el0_svc+0x58/0x13c [ 85.105535][ T4992] el0_svc+0x78/0x1d0 [ 85.106191][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.107053][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.107989][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.109589][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.110691][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.112233][ T4992] Call trace: [ 85.112762][ T4992] dump_backtrace+0x0/0x458 [ 85.113451][ T4992] show_stack+0x2c/0x3c [ 85.114087][ T4992] __dump_stack+0x30/0x40 [ 85.114817][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.115538][ T4992] dump_stack+0x1c/0x5c [ 85.116200][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.117019][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.117750][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.118464][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.119154][ T4992] inet_sendmsg+0x154/0x284 [ 85.119811][ T4992] __sys_sendto+0x30c/0x420 [ 85.120504][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.121263][ T4992] invoke_syscall+0x98/0x2b0 [ 85.121944][ T4992] el0_svc_common+0x138/0x258 [ 85.122693][ T4992] do_el0_svc+0x58/0x13c [ 85.123344][ T4992] el0_svc+0x78/0x1d0 [ 85.123911][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.124682][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.125602][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.127164][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.128205][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.129894][ T4992] Call trace: [ 85.130433][ T4992] dump_backtrace+0x0/0x458 [ 85.131196][ T4992] show_stack+0x2c/0x3c [ 85.131836][ T4992] __dump_stack+0x30/0x40 [ 85.132555][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.133319][ T4992] dump_stack+0x1c/0x5c [ 85.134027][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.134963][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.135726][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.136537][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.137236][ T4992] inet_sendmsg+0x154/0x284 [ 85.137969][ T4992] __sys_sendto+0x30c/0x420 [ 85.138686][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.139422][ T4992] invoke_syscall+0x98/0x2b0 [ 85.140099][ T4992] el0_svc_common+0x138/0x258 [ 85.140811][ T4992] do_el0_svc+0x58/0x13c [ 85.141477][ T4992] el0_svc+0x78/0x1d0 [ 85.142142][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.142940][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.143835][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.145586][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.146711][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.148342][ T4992] Call trace: [ 85.148883][ T4992] dump_backtrace+0x0/0x458 [ 85.149614][ T4992] show_stack+0x2c/0x3c [ 85.150240][ T4992] __dump_stack+0x30/0x40 [ 85.150939][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.151677][ T4992] dump_stack+0x1c/0x5c [ 85.152395][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.153197][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.153992][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.154759][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.155497][ T4992] inet_sendmsg+0x154/0x284 [ 85.156216][ T4992] __sys_sendto+0x30c/0x420 [ 85.156920][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.157661][ T4992] invoke_syscall+0x98/0x2b0 [ 85.158425][ T4992] el0_svc_common+0x138/0x258 [ 85.159200][ T4992] do_el0_svc+0x58/0x13c [ 85.159911][ T4992] el0_svc+0x78/0x1d0 [ 85.160553][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.161360][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.162269][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.164007][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.165137][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.166660][ T4992] Call trace: [ 85.167158][ T4992] dump_backtrace+0x0/0x458 [ 85.167854][ T4992] show_stack+0x2c/0x3c [ 85.168466][ T4992] __dump_stack+0x30/0x40 [ 85.169087][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.169758][ T4992] dump_stack+0x1c/0x5c [ 85.170455][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.171322][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.172109][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.172931][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.173637][ T4992] inet_sendmsg+0x154/0x284 [ 85.174355][ T4992] __sys_sendto+0x30c/0x420 [ 85.175056][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.175776][ T4992] invoke_syscall+0x98/0x2b0 [ 85.176573][ T4992] el0_svc_common+0x138/0x258 [ 85.177411][ T4992] do_el0_svc+0x58/0x13c [ 85.178097][ T4992] el0_svc+0x78/0x1d0 [ 85.178797][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.179591][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.180525][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.182294][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.183439][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.184863][ T4992] Call trace: [ 85.185397][ T4992] dump_backtrace+0x0/0x458 [ 85.186112][ T4992] show_stack+0x2c/0x3c [ 85.186814][ T4992] __dump_stack+0x30/0x40 [ 85.187472][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.188230][ T4992] dump_stack+0x1c/0x5c [ 85.188944][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.189770][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.190542][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.191314][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.192004][ T4992] inet_sendmsg+0x154/0x284 [ 85.192725][ T4992] __sys_sendto+0x30c/0x420 [ 85.193394][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.194100][ T4992] invoke_syscall+0x98/0x2b0 [ 85.194778][ T4992] el0_svc_common+0x138/0x258 [ 85.195518][ T4992] do_el0_svc+0x58/0x13c [ 85.196162][ T4992] el0_svc+0x78/0x1d0 [ 85.196797][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.197607][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.198456][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.200149][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.201221][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.202826][ T4992] Call trace: [ 85.203335][ T4992] dump_backtrace+0x0/0x458 [ 85.204060][ T4992] show_stack+0x2c/0x3c [ 85.204783][ T4992] __dump_stack+0x30/0x40 [ 85.205449][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.206195][ T4992] dump_stack+0x1c/0x5c [ 85.206866][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.207754][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.208580][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.209424][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.210170][ T4992] inet_sendmsg+0x154/0x284 [ 85.210907][ T4992] __sys_sendto+0x30c/0x420 [ 85.211609][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.212402][ T4992] invoke_syscall+0x98/0x2b0 [ 85.213145][ T4992] el0_svc_common+0x138/0x258 [ 85.213991][ T4992] do_el0_svc+0x58/0x13c [ 85.214618][ T4992] el0_svc+0x78/0x1d0 [ 85.215169][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.216002][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.216957][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.218762][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.219900][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.221489][ T4992] Call trace: [ 85.221995][ T4992] dump_backtrace+0x0/0x458 [ 85.222700][ T4992] show_stack+0x2c/0x3c [ 85.223382][ T4992] __dump_stack+0x30/0x40 [ 85.224079][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.224835][ T4992] dump_stack+0x1c/0x5c [ 85.225520][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.226434][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.227271][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.228102][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.228817][ T4992] inet_sendmsg+0x154/0x284 [ 85.229540][ T4992] __sys_sendto+0x30c/0x420 [ 85.230271][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.231043][ T4992] invoke_syscall+0x98/0x2b0 [ 85.231747][ T4992] el0_svc_common+0x138/0x258 [ 85.232439][ T4992] do_el0_svc+0x58/0x13c [ 85.233169][ T4992] el0_svc+0x78/0x1d0 [ 85.233821][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.234662][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.235620][ T4992] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.237490][ T4992] CPU: 1 PID: 4992 Comm: syz.0.42 Not tainted syzkaller #0 [ 85.238662][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.240324][ T4992] Call trace: [ 85.240852][ T4992] dump_backtrace+0x0/0x458 [ 85.241573][ T4992] show_stack+0x2c/0x3c [ 85.242226][ T4992] __dump_stack+0x30/0x40 [ 85.242882][ T4992] dump_stack_lvl+0xf4/0x15c [ 85.243692][ T4992] dump_stack+0x1c/0x5c [ 85.244406][ T4992] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.245333][ T4992] dccp_xmit_packet+0x298/0x448 [ 85.246114][ T4992] dccp_write_xmit+0x118/0x1d0 [ 85.246890][ T4992] dccp_sendmsg+0x550/0x8b8 [ 85.247587][ T4992] inet_sendmsg+0x154/0x284 [ 85.248281][ T4992] __sys_sendto+0x30c/0x420 [ 85.249000][ T4992] __arm64_sys_sendto+0xd8/0xf8 [ 85.249778][ T4992] invoke_syscall+0x98/0x2b0 [ 85.250545][ T4992] el0_svc_common+0x138/0x258 [ 85.251278][ T4992] do_el0_svc+0x58/0x13c [ 85.251923][ T4992] el0_svc+0x78/0x1d0 [ 85.252627][ T4992] el0t_64_sync_handler+0xcc/0xe4 [ 85.253447][ T4992] el0t_64_sync+0x1a0/0x1a4 [ 85.265817][ T4994] dccp_xmit_packet: Payload too large (65475) for featneg. [ 85.273707][ T4994] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.275567][ T4994] CPU: 0 PID: 4994 Comm: syz.0.43 Not tainted syzkaller #0 [ 85.276755][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.278433][ T4994] Call trace: [ 85.278954][ T4994] dump_backtrace+0x0/0x458 [ 85.279683][ T4994] show_stack+0x2c/0x3c [ 85.280354][ T4994] __dump_stack+0x30/0x40 [ 85.281032][ T4994] dump_stack_lvl+0xf4/0x15c [ 85.281801][ T4994] dump_stack+0x1c/0x5c [ 85.282539][ T4994] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.283405][ T4994] dccp_xmit_packet+0x298/0x448 [ 85.284212][ T4994] dccp_write_xmit+0x118/0x1d0 [ 85.284974][ T4994] dccp_sendmsg+0x550/0x8b8 [ 85.285683][ T4994] inet_sendmsg+0x154/0x284 [ 85.286438][ T4994] __sys_sendto+0x30c/0x420 [ 85.287168][ T4994] __arm64_sys_sendto+0xd8/0xf8 [ 85.287951][ T4994] invoke_syscall+0x98/0x2b0 [ 85.288719][ T4994] el0_svc_common+0x138/0x258 [ 85.289500][ T4994] do_el0_svc+0x58/0x13c [ 85.290209][ T4994] el0_svc+0x78/0x1d0 [ 85.290878][ T4994] el0t_64_sync_handler+0xcc/0xe4 [ 85.291647][ T4994] el0t_64_sync+0x1a0/0x1a4 [ 85.293431][ T4994] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.295026][ T4994] CPU: 1 PID: 4994 Comm: syz.0.43 Not tainted syzkaller #0 [ 85.296071][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.297489][ T4994] Call trace: [ 85.298003][ T4994] dump_backtrace+0x0/0x458 [ 85.298654][ T4994] show_stack+0x2c/0x3c [ 85.299278][ T4994] __dump_stack+0x30/0x40 [ 85.299922][ T4994] dump_stack_lvl+0xf4/0x15c [ 85.300572][ T4994] dump_stack+0x1c/0x5c [ 85.301158][ T4994] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.301941][ T4994] dccp_xmit_packet+0x298/0x448 [ 85.302652][ T4994] dccp_write_xmit+0x118/0x1d0 [ 85.303434][ T4994] dccp_sendmsg+0x550/0x8b8 [ 85.304149][ T4994] inet_sendmsg+0x154/0x284 [ 85.304818][ T4994] __sys_sendto+0x30c/0x420 [ 85.305469][ T4994] __arm64_sys_sendto+0xd8/0xf8 [ 85.306213][ T4994] invoke_syscall+0x98/0x2b0 [ 85.306891][ T4994] el0_svc_common+0x138/0x258 [ 85.307542][ T4994] do_el0_svc+0x58/0x13c [ 85.308143][ T4994] el0_svc+0x78/0x1d0 [ 85.308792][ T4994] el0t_64_sync_handler+0xcc/0xe4 [ 85.309632][ T4994] el0t_64_sync+0x1a0/0x1a4 [ 85.312441][ T4994] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.314223][ T4994] CPU: 1 PID: 4994 Comm: syz.0.43 Not tainted syzkaller #0 [ 85.315462][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.317052][ T4994] Call trace: [ 85.317598][ T4994] dump_backtrace+0x0/0x458 [ 85.318364][ T4994] show_stack+0x2c/0x3c [ 85.319025][ T4994] __dump_stack+0x30/0x40 [ 85.319746][ T4994] dump_stack_lvl+0xf4/0x15c [ 85.320432][ T4994] dump_stack+0x1c/0x5c [ 85.321030][ T4994] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.322186][ T4994] dccp_xmit_packet+0x298/0x448 [ 85.322877][ T4994] dccp_write_xmit+0x118/0x1d0 [ 85.323715][ T4994] dccp_sendmsg+0x550/0x8b8 [ 85.324461][ T4994] inet_sendmsg+0x154/0x284 [ 85.325230][ T4994] __sys_sendto+0x30c/0x420 [ 85.326006][ T4994] __arm64_sys_sendto+0xd8/0xf8 [ 85.326800][ T4994] invoke_syscall+0x98/0x2b0 [ 85.327579][ T4994] el0_svc_common+0x138/0x258 [ 85.328356][ T4994] do_el0_svc+0x58/0x13c [ 85.329034][ T4994] el0_svc+0x78/0x1d0 [ 85.329677][ T4994] el0t_64_sync_handler+0xcc/0xe4 [ 85.330448][ T4994] el0t_64_sync+0x1a0/0x1a4 [ 85.331434][ T4994] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.333335][ T4994] CPU: 1 PID: 4994 Comm: syz.0.43 Not tainted syzkaller #0 [ 85.334442][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.336042][ T4994] Call trace: [ 85.336602][ T4994] dump_backtrace+0x0/0x458 [ 85.337331][ T4994] show_stack+0x2c/0x3c [ 85.337994][ T4994] __dump_stack+0x30/0x40 [ 85.338762][ T4994] dump_stack_lvl+0xf4/0x15c [ 85.339525][ T4994] dump_stack+0x1c/0x5c [ 85.340193][ T4994] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.341002][ T4994] dccp_xmit_packet+0x298/0x448 [ 85.341720][ T4994] dccp_write_xmit+0x118/0x1d0 [ 85.342473][ T4994] dccp_sendmsg+0x550/0x8b8 [ 85.343162][ T4994] inet_sendmsg+0x154/0x284 [ 85.343844][ T4994] __sys_sendto+0x30c/0x420 [ 85.344598][ T4994] __arm64_sys_sendto+0xd8/0xf8 [ 85.345328][ T4994] invoke_syscall+0x98/0x2b0 [ 85.346071][ T4994] el0_svc_common+0x138/0x258 [ 85.346798][ T4994] do_el0_svc+0x58/0x13c [ 85.347423][ T4994] el0_svc+0x78/0x1d0 [ 85.348028][ T4994] el0t_64_sync_handler+0xcc/0xe4 [ 85.348758][ T4994] el0t_64_sync+0x1a0/0x1a4 [ 85.349668][ T4994] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.351398][ T4994] CPU: 1 PID: 4994 Comm: syz.0.43 Not tainted syzkaller #0 [ 85.352574][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.354296][ T4994] Call trace: [ 85.354795][ T4994] dump_backtrace+0x0/0x458 [ 85.355515][ T4994] show_stack+0x2c/0x3c [ 85.356265][ T4994] __dump_stack+0x30/0x40 [ 85.356869][ T4994] dump_stack_lvl+0xf4/0x15c [ 85.357564][ T4994] dump_stack+0x1c/0x5c [ 85.358179][ T4994] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.359084][ T4994] dccp_xmit_packet+0x298/0x448 [ 85.359828][ T4994] dccp_write_xmit+0x118/0x1d0 [ 85.360679][ T4994] dccp_sendmsg+0x550/0x8b8 [ 85.361397][ T4994] inet_sendmsg+0x154/0x284 [ 85.362110][ T4994] __sys_sendto+0x30c/0x420 [ 85.362897][ T4994] __arm64_sys_sendto+0xd8/0xf8 [ 85.363634][ T4994] invoke_syscall+0x98/0x2b0 [ 85.364328][ T4994] el0_svc_common+0x138/0x258 [ 85.365012][ T4994] do_el0_svc+0x58/0x13c [ 85.365672][ T4994] el0_svc+0x78/0x1d0 [ 85.366263][ T4994] el0t_64_sync_handler+0xcc/0xe4 [ 85.367090][ T4994] el0t_64_sync+0x1a0/0x1a4 [ 85.367938][ T4994] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.369537][ T4994] CPU: 1 PID: 4994 Comm: syz.0.43 Not tainted syzkaller #0 [ 85.370623][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.372177][ T4994] Call trace: [ 85.372710][ T4994] dump_backtrace+0x0/0x458 [ 85.373440][ T4994] show_stack+0x2c/0x3c [ 85.374089][ T4994] __dump_stack+0x30/0x40 [ 85.374821][ T4994] dump_stack_lvl+0xf4/0x15c [ 85.375638][ T4994] dump_stack+0x1c/0x5c [ 85.376327][ T4994] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.377216][ T4994] dccp_xmit_packet+0x298/0x448 [ 85.378040][ T4994] dccp_write_xmit+0x118/0x1d0 [ 85.378862][ T4994] dccp_sendmsg+0x550/0x8b8 [ 85.379621][ T4994] inet_sendmsg+0x154/0x284 [ 85.380428][ T4994] __sys_sendto+0x30c/0x420 [ 85.381183][ T4994] __arm64_sys_sendto+0xd8/0xf8 [ 85.381971][ T4994] invoke_syscall+0x98/0x2b0 [ 85.382730][ T4994] el0_svc_common+0x138/0x258 [ 85.383477][ T4994] do_el0_svc+0x58/0x13c [ 85.384172][ T4994] el0_svc+0x78/0x1d0 [ 85.384880][ T4994] el0t_64_sync_handler+0xcc/0xe4 [ 85.385756][ T4994] el0t_64_sync+0x1a0/0x1a4 [ 85.386739][ T4994] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.388460][ T4994] CPU: 1 PID: 4994 Comm: syz.0.43 Not tainted syzkaller #0 [ 85.389515][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.391024][ T4994] Call trace: [ 85.391523][ T4994] dump_backtrace+0x0/0x458 [ 85.392285][ T4994] show_stack+0x2c/0x3c [ 85.392985][ T4994] __dump_stack+0x30/0x40 [ 85.393662][ T4994] dump_stack_lvl+0xf4/0x15c [ 85.394348][ T4994] dump_stack+0x1c/0x5c [ 85.394973][ T4994] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.395792][ T4994] dccp_xmit_packet+0x298/0x448 [ 85.396565][ T4994] dccp_write_xmit+0x118/0x1d0 [ 85.397348][ T4994] dccp_sendmsg+0x550/0x8b8 [ 85.398102][ T4994] inet_sendmsg+0x154/0x284 [ 85.398834][ T4994] __sys_sendto+0x30c/0x420 [ 85.399632][ T4994] __arm64_sys_sendto+0xd8/0xf8 [ 85.400465][ T4994] invoke_syscall+0x98/0x2b0 [ 85.401174][ T4994] el0_svc_common+0x138/0x258 [ 85.401915][ T4994] do_el0_svc+0x58/0x13c [ 85.402557][ T4994] el0_svc+0x78/0x1d0 [ 85.403222][ T4994] el0t_64_sync_handler+0xcc/0xe4 [ 85.404054][ T4994] el0t_64_sync+0x1a0/0x1a4 [ 85.404996][ T4994] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.406679][ T4994] CPU: 1 PID: 4994 Comm: syz.0.43 Not tainted syzkaller #0 [ 85.407708][ T4994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.409178][ T4994] Call trace: [ 85.409701][ T4994] dump_backtrace+0x0/0x458 [ 85.410381][ T4994] show_stack+0x2c/0x3c [ 85.411082][ T4994] __dump_stack+0x30/0x40 [ 85.411825][ T4994] dump_stack_lvl+0xf4/0x15c [ 85.412575][ T4994] dump_stack+0x1c/0x5c [ 85.413282][ T4994] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.414145][ T4994] dccp_xmit_packet+0x298/0x448 [ 85.414865][ T4994] dccp_write_xmit+0x118/0x1d0 [ 85.415675][ T4994] dccp_sendmsg+0x550/0x8b8 [ 85.416416][ T4994] inet_sendmsg+0x154/0x284 [ 85.417162][ T4994] __sys_sendto+0x30c/0x420 [ 85.417814][ T4994] __arm64_sys_sendto+0xd8/0xf8 [ 85.418635][ T4994] invoke_syscall+0x98/0x2b0 [ 85.419413][ T4994] el0_svc_common+0x138/0x258 [ 85.420206][ T4994] do_el0_svc+0x58/0x13c [ 85.420890][ T4994] el0_svc+0x78/0x1d0 [ 85.421536][ T4994] el0t_64_sync_handler+0xcc/0xe4 [ 85.422361][ T4994] el0t_64_sync+0x1a0/0x1a4 [ 85.433039][ T4996] dccp_xmit_packet: Payload too large (65475) for featneg. [ 85.440620][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.442768][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.443909][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.445507][ T4996] Call trace: [ 85.446057][ T4996] dump_backtrace+0x0/0x458 [ 85.446779][ T4996] show_stack+0x2c/0x3c [ 85.447477][ T4996] __dump_stack+0x30/0x40 [ 85.448185][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.448933][ T4996] dump_stack+0x1c/0x5c [ 85.449546][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.450395][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.451136][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.451892][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.452661][ T4996] inet_sendmsg+0x154/0x284 [ 85.453420][ T4996] __sys_sendto+0x30c/0x420 [ 85.454139][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.454896][ T4996] invoke_syscall+0x98/0x2b0 [ 85.455601][ T4996] el0_svc_common+0x138/0x258 [ 85.456287][ T4996] do_el0_svc+0x58/0x13c [ 85.456898][ T4996] el0_svc+0x78/0x1d0 [ 85.457556][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.458395][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.459328][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.461033][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.462122][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.463607][ T4996] Call trace: [ 85.464094][ T4996] dump_backtrace+0x0/0x458 [ 85.464786][ T4996] show_stack+0x2c/0x3c [ 85.465441][ T4996] __dump_stack+0x30/0x40 [ 85.466139][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.466859][ T4996] dump_stack+0x1c/0x5c [ 85.467515][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.468379][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.469181][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.469975][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.470696][ T4996] inet_sendmsg+0x154/0x284 [ 85.471394][ T4996] __sys_sendto+0x30c/0x420 [ 85.472120][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.472941][ T4996] invoke_syscall+0x98/0x2b0 [ 85.473710][ T4996] el0_svc_common+0x138/0x258 [ 85.474521][ T4996] do_el0_svc+0x58/0x13c [ 85.475291][ T4996] el0_svc+0x78/0x1d0 [ 85.475940][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.476791][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.478236][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.480011][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.481126][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.482682][ T4996] Call trace: [ 85.483194][ T4996] dump_backtrace+0x0/0x458 [ 85.483916][ T4996] show_stack+0x2c/0x3c [ 85.484577][ T4996] __dump_stack+0x30/0x40 [ 85.485315][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.486083][ T4996] dump_stack+0x1c/0x5c [ 85.486746][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.487594][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.488402][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.489158][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.489886][ T4996] inet_sendmsg+0x154/0x284 [ 85.490662][ T4996] __sys_sendto+0x30c/0x420 [ 85.491421][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.492260][ T4996] invoke_syscall+0x98/0x2b0 [ 85.493032][ T4996] el0_svc_common+0x138/0x258 [ 85.493805][ T4996] do_el0_svc+0x58/0x13c [ 85.494512][ T4996] el0_svc+0x78/0x1d0 [ 85.495138][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.496001][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.497049][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.498880][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.499934][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.501608][ T4996] Call trace: [ 85.502160][ T4996] dump_backtrace+0x0/0x458 [ 85.502936][ T4996] show_stack+0x2c/0x3c [ 85.503658][ T4996] __dump_stack+0x30/0x40 [ 85.504357][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.505119][ T4996] dump_stack+0x1c/0x5c [ 85.505782][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.506665][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.507501][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.508304][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.509012][ T4996] inet_sendmsg+0x154/0x284 [ 85.509704][ T4996] __sys_sendto+0x30c/0x420 [ 85.510397][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.511235][ T4996] invoke_syscall+0x98/0x2b0 [ 85.511996][ T4996] el0_svc_common+0x138/0x258 [ 85.512780][ T4996] do_el0_svc+0x58/0x13c [ 85.513514][ T4996] el0_svc+0x78/0x1d0 [ 85.514189][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.515029][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.515910][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.517615][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.518693][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.520403][ T4996] Call trace: [ 85.520983][ T4996] dump_backtrace+0x0/0x458 [ 85.521752][ T4996] show_stack+0x2c/0x3c [ 85.522445][ T4996] __dump_stack+0x30/0x40 [ 85.523194][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.523955][ T4996] dump_stack+0x1c/0x5c [ 85.524618][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.525401][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.526113][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.526812][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.527584][ T4996] inet_sendmsg+0x154/0x284 [ 85.528353][ T4996] __sys_sendto+0x30c/0x420 [ 85.529041][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.529872][ T4996] invoke_syscall+0x98/0x2b0 [ 85.530650][ T4996] el0_svc_common+0x138/0x258 [ 85.531433][ T4996] do_el0_svc+0x58/0x13c [ 85.532126][ T4996] el0_svc+0x78/0x1d0 [ 85.532766][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.533568][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.534555][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.536233][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.537267][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.538861][ T4996] Call trace: [ 85.539355][ T4996] dump_backtrace+0x0/0x458 [ 85.540086][ T4996] show_stack+0x2c/0x3c [ 85.540700][ T4996] __dump_stack+0x30/0x40 [ 85.541329][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.542027][ T4996] dump_stack+0x1c/0x5c [ 85.542636][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.543542][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.544330][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.545137][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.545867][ T4996] inet_sendmsg+0x154/0x284 [ 85.546559][ T4996] __sys_sendto+0x30c/0x420 [ 85.547265][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.548104][ T4996] invoke_syscall+0x98/0x2b0 [ 85.548904][ T4996] el0_svc_common+0x138/0x258 [ 85.549644][ T4996] do_el0_svc+0x58/0x13c [ 85.550371][ T4996] el0_svc+0x78/0x1d0 [ 85.551059][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.551890][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.552895][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.554695][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.555799][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.557423][ T4996] Call trace: [ 85.557967][ T4996] dump_backtrace+0x0/0x458 [ 85.558662][ T4996] show_stack+0x2c/0x3c [ 85.559339][ T4996] __dump_stack+0x30/0x40 [ 85.560065][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.560873][ T4996] dump_stack+0x1c/0x5c [ 85.561481][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.562325][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.563125][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.563936][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.564655][ T4996] inet_sendmsg+0x154/0x284 [ 85.565365][ T4996] __sys_sendto+0x30c/0x420 [ 85.566107][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.566872][ T4996] invoke_syscall+0x98/0x2b0 [ 85.567593][ T4996] el0_svc_common+0x138/0x258 [ 85.568372][ T4996] do_el0_svc+0x58/0x13c [ 85.569074][ T4996] el0_svc+0x78/0x1d0 [ 85.569730][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.570512][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.571435][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.573207][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.574348][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.575853][ T4996] Call trace: [ 85.576352][ T4996] dump_backtrace+0x0/0x458 [ 85.577007][ T4996] show_stack+0x2c/0x3c [ 85.577691][ T4996] __dump_stack+0x30/0x40 [ 85.578356][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.579094][ T4996] dump_stack+0x1c/0x5c [ 85.579726][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.580517][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.581320][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.582147][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.582882][ T4996] inet_sendmsg+0x154/0x284 [ 85.583595][ T4996] __sys_sendto+0x30c/0x420 [ 85.584302][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.585115][ T4996] invoke_syscall+0x98/0x2b0 [ 85.585911][ T4996] el0_svc_common+0x138/0x258 [ 85.586672][ T4996] do_el0_svc+0x58/0x13c [ 85.587316][ T4996] el0_svc+0x78/0x1d0 [ 85.587980][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.588828][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.589722][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.591379][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.592561][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.594129][ T4996] Call trace: [ 85.594634][ T4996] dump_backtrace+0x0/0x458 [ 85.595328][ T4996] show_stack+0x2c/0x3c [ 85.595988][ T4996] __dump_stack+0x30/0x40 [ 85.596665][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.597423][ T4996] dump_stack+0x1c/0x5c [ 85.598106][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.599013][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.599808][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.600602][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.601295][ T4996] inet_sendmsg+0x154/0x284 [ 85.602018][ T4996] __sys_sendto+0x30c/0x420 [ 85.602752][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.603480][ T4996] invoke_syscall+0x98/0x2b0 [ 85.604185][ T4996] el0_svc_common+0x138/0x258 [ 85.604985][ T4996] do_el0_svc+0x58/0x13c [ 85.605643][ T4996] el0_svc+0x78/0x1d0 [ 85.606306][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.607081][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.607972][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.609682][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.610809][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.612397][ T4996] Call trace: [ 85.612404][ T4996] dump_backtrace+0x0/0x458 [ 85.612414][ T4996] show_stack+0x2c/0x3c [ 85.612420][ T4996] __dump_stack+0x30/0x40 [ 85.612426][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.612431][ T4996] dump_stack+0x1c/0x5c [ 85.616397][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.617251][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.617990][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.618722][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.619467][ T4996] inet_sendmsg+0x154/0x284 [ 85.620217][ T4996] __sys_sendto+0x30c/0x420 [ 85.620958][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.621778][ T4996] invoke_syscall+0x98/0x2b0 [ 85.622519][ T4996] el0_svc_common+0x138/0x258 [ 85.623242][ T4996] do_el0_svc+0x58/0x13c [ 85.623932][ T4996] el0_svc+0x78/0x1d0 [ 85.624593][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.625493][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.626414][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.628082][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.629347][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.630933][ T4996] Call trace: [ 85.631456][ T4996] dump_backtrace+0x0/0x458 [ 85.632166][ T4996] show_stack+0x2c/0x3c [ 85.632844][ T4996] __dump_stack+0x30/0x40 [ 85.633578][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.634351][ T4996] dump_stack+0x1c/0x5c [ 85.635052][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.635940][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.636733][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.637518][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.638271][ T4996] inet_sendmsg+0x154/0x284 [ 85.639003][ T4996] __sys_sendto+0x30c/0x420 [ 85.639758][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.640544][ T4996] invoke_syscall+0x98/0x2b0 [ 85.641322][ T4996] el0_svc_common+0x138/0x258 [ 85.642088][ T4996] do_el0_svc+0x58/0x13c [ 85.642775][ T4996] el0_svc+0x78/0x1d0 [ 85.643437][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.644253][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.645289][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.646995][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.648057][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.649512][ T4996] Call trace: [ 85.649974][ T4996] dump_backtrace+0x0/0x458 [ 85.650705][ T4996] show_stack+0x2c/0x3c [ 85.651349][ T4996] __dump_stack+0x30/0x40 [ 85.652038][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.652768][ T4996] dump_stack+0x1c/0x5c [ 85.653449][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.654335][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.655073][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.655801][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.656499][ T4996] inet_sendmsg+0x154/0x284 [ 85.657225][ T4996] __sys_sendto+0x30c/0x420 [ 85.657901][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.658648][ T4996] invoke_syscall+0x98/0x2b0 [ 85.659376][ T4996] el0_svc_common+0x138/0x258 [ 85.660076][ T4996] do_el0_svc+0x58/0x13c [ 85.660703][ T4996] el0_svc+0x78/0x1d0 [ 85.661342][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.662174][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.663128][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.664647][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.665657][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.667058][ T4996] Call trace: [ 85.667494][ T4996] dump_backtrace+0x0/0x458 [ 85.668103][ T4996] show_stack+0x2c/0x3c [ 85.668671][ T4996] __dump_stack+0x30/0x40 [ 85.669264][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.669944][ T4996] dump_stack+0x1c/0x5c [ 85.670622][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.671545][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.672362][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.673118][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.673886][ T4996] inet_sendmsg+0x154/0x284 [ 85.674650][ T4996] __sys_sendto+0x30c/0x420 [ 85.675359][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.676141][ T4996] invoke_syscall+0x98/0x2b0 [ 85.676842][ T4996] el0_svc_common+0x138/0x258 [ 85.677600][ T4996] do_el0_svc+0x58/0x13c [ 85.678233][ T4996] el0_svc+0x78/0x1d0 [ 85.678798][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.679610][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.680487][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.682349][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.683409][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.685011][ T4996] Call trace: [ 85.685520][ T4996] dump_backtrace+0x0/0x458 [ 85.686199][ T4996] show_stack+0x2c/0x3c [ 85.686826][ T4996] __dump_stack+0x30/0x40 [ 85.687472][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.688161][ T4996] dump_stack+0x1c/0x5c [ 85.688856][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.689699][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.690400][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.691159][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.691905][ T4996] inet_sendmsg+0x154/0x284 [ 85.692625][ T4996] __sys_sendto+0x30c/0x420 [ 85.693300][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.694055][ T4996] invoke_syscall+0x98/0x2b0 [ 85.694774][ T4996] el0_svc_common+0x138/0x258 [ 85.695497][ T4996] do_el0_svc+0x58/0x13c [ 85.696124][ T4996] el0_svc+0x78/0x1d0 [ 85.696737][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.697521][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.698391][ T4996] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.700088][ T4996] CPU: 1 PID: 4996 Comm: syz.0.44 Not tainted syzkaller #0 [ 85.701227][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.702869][ T4996] Call trace: [ 85.703436][ T4996] dump_backtrace+0x0/0x458 [ 85.704152][ T4996] show_stack+0x2c/0x3c [ 85.704724][ T4996] __dump_stack+0x30/0x40 [ 85.705384][ T4996] dump_stack_lvl+0xf4/0x15c [ 85.706060][ T4996] dump_stack+0x1c/0x5c [ 85.706746][ T4996] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.707619][ T4996] dccp_xmit_packet+0x298/0x448 [ 85.708383][ T4996] dccp_write_xmit+0x118/0x1d0 [ 85.709123][ T4996] dccp_sendmsg+0x550/0x8b8 [ 85.709819][ T4996] inet_sendmsg+0x154/0x284 [ 85.710524][ T4996] __sys_sendto+0x30c/0x420 [ 85.711240][ T4996] __arm64_sys_sendto+0xd8/0xf8 [ 85.712017][ T4996] invoke_syscall+0x98/0x2b0 [ 85.712794][ T4996] el0_svc_common+0x138/0x258 [ 85.713552][ T4996] do_el0_svc+0x58/0x13c [ 85.714223][ T4996] el0_svc+0x78/0x1d0 [ 85.714853][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 85.715614][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 85.726739][ T4998] dccp_xmit_packet: Payload too large (65475) for featneg. [ 85.734532][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.736261][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.737372][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.738873][ T4998] Call trace: [ 85.739380][ T4998] dump_backtrace+0x0/0x458 [ 85.740099][ T4998] show_stack+0x2c/0x3c [ 85.740720][ T4998] __dump_stack+0x30/0x40 [ 85.741363][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.742131][ T4998] dump_stack+0x1c/0x5c [ 85.742797][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.743714][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.744528][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.745297][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.746013][ T4998] inet_sendmsg+0x154/0x284 [ 85.746762][ T4998] __sys_sendto+0x30c/0x420 [ 85.747541][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.748374][ T4998] invoke_syscall+0x98/0x2b0 [ 85.749166][ T4998] el0_svc_common+0x138/0x258 [ 85.749904][ T4998] do_el0_svc+0x58/0x13c [ 85.750631][ T4998] el0_svc+0x78/0x1d0 [ 85.751314][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.752170][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.753206][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.754918][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.756086][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.757745][ T4998] Call trace: [ 85.758274][ T4998] dump_backtrace+0x0/0x458 [ 85.759010][ T4998] show_stack+0x2c/0x3c [ 85.759663][ T4998] __dump_stack+0x30/0x40 [ 85.760362][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.761108][ T4998] dump_stack+0x1c/0x5c [ 85.761743][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.762611][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.763382][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.764137][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.764895][ T4998] inet_sendmsg+0x154/0x284 [ 85.765620][ T4998] __sys_sendto+0x30c/0x420 [ 85.766345][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.767120][ T4998] invoke_syscall+0x98/0x2b0 [ 85.767913][ T4998] el0_svc_common+0x138/0x258 [ 85.768648][ T4998] do_el0_svc+0x58/0x13c [ 85.769353][ T4998] el0_svc+0x78/0x1d0 [ 85.770000][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.770739][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.772112][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.773960][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.775072][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.776602][ T4998] Call trace: [ 85.777098][ T4998] dump_backtrace+0x0/0x458 [ 85.777780][ T4998] show_stack+0x2c/0x3c [ 85.778457][ T4998] __dump_stack+0x30/0x40 [ 85.779198][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.779998][ T4998] dump_stack+0x1c/0x5c [ 85.780675][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.781551][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.782335][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.783137][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.783847][ T4998] inet_sendmsg+0x154/0x284 [ 85.784608][ T4998] __sys_sendto+0x30c/0x420 [ 85.785338][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.786101][ T4998] invoke_syscall+0x98/0x2b0 [ 85.786820][ T4998] el0_svc_common+0x138/0x258 [ 85.787593][ T4998] do_el0_svc+0x58/0x13c [ 85.788255][ T4998] el0_svc+0x78/0x1d0 [ 85.788900][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.789692][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.790889][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.792697][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.793762][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.795301][ T4998] Call trace: [ 85.795840][ T4998] dump_backtrace+0x0/0x458 [ 85.796565][ T4998] show_stack+0x2c/0x3c [ 85.797270][ T4998] __dump_stack+0x30/0x40 [ 85.797927][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.798631][ T4998] dump_stack+0x1c/0x5c [ 85.799268][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.800145][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.800854][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.801545][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.802269][ T4998] inet_sendmsg+0x154/0x284 [ 85.802950][ T4998] __sys_sendto+0x30c/0x420 [ 85.803648][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.804412][ T4998] invoke_syscall+0x98/0x2b0 [ 85.805112][ T4998] el0_svc_common+0x138/0x258 [ 85.805817][ T4998] do_el0_svc+0x58/0x13c [ 85.806429][ T4998] el0_svc+0x78/0x1d0 [ 85.807014][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.807763][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.808745][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.810346][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.811523][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.813022][ T4998] Call trace: [ 85.813537][ T4998] dump_backtrace+0x0/0x458 [ 85.814254][ T4998] show_stack+0x2c/0x3c [ 85.814918][ T4998] __dump_stack+0x30/0x40 [ 85.815603][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.816339][ T4998] dump_stack+0x1c/0x5c [ 85.816951][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.817853][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.818656][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.819441][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.820175][ T4998] inet_sendmsg+0x154/0x284 [ 85.820915][ T4998] __sys_sendto+0x30c/0x420 [ 85.821691][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.822518][ T4998] invoke_syscall+0x98/0x2b0 [ 85.823271][ T4998] el0_svc_common+0x138/0x258 [ 85.824004][ T4998] do_el0_svc+0x58/0x13c [ 85.824761][ T4998] el0_svc+0x78/0x1d0 [ 85.825369][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.826216][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.827256][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.829036][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.830165][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.831732][ T4998] Call trace: [ 85.832231][ T4998] dump_backtrace+0x0/0x458 [ 85.832995][ T4998] show_stack+0x2c/0x3c [ 85.833687][ T4998] __dump_stack+0x30/0x40 [ 85.834379][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.835145][ T4998] dump_stack+0x1c/0x5c [ 85.835777][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.836626][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.837435][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.838183][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.838865][ T4998] inet_sendmsg+0x154/0x284 [ 85.839549][ T4998] __sys_sendto+0x30c/0x420 [ 85.840269][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.841033][ T4998] invoke_syscall+0x98/0x2b0 [ 85.841711][ T4998] el0_svc_common+0x138/0x258 [ 85.842399][ T4998] do_el0_svc+0x58/0x13c [ 85.843087][ T4998] el0_svc+0x78/0x1d0 [ 85.843715][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.844521][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.845575][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.847269][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.848375][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.849838][ T4998] Call trace: [ 85.850320][ T4998] dump_backtrace+0x0/0x458 [ 85.850978][ T4998] show_stack+0x2c/0x3c [ 85.851643][ T4998] __dump_stack+0x30/0x40 [ 85.852383][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.853148][ T4998] dump_stack+0x1c/0x5c [ 85.853706][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.854560][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.855242][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.855958][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.856606][ T4998] inet_sendmsg+0x154/0x284 [ 85.857243][ T4998] __sys_sendto+0x30c/0x420 [ 85.857914][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.858715][ T4998] invoke_syscall+0x98/0x2b0 [ 85.859424][ T4998] el0_svc_common+0x138/0x258 [ 85.860150][ T4998] do_el0_svc+0x58/0x13c [ 85.860834][ T4998] el0_svc+0x78/0x1d0 [ 85.861463][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.862232][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.863267][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.864974][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.866172][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.867867][ T4998] Call trace: [ 85.868396][ T4998] dump_backtrace+0x0/0x458 [ 85.869124][ T4998] show_stack+0x2c/0x3c [ 85.869783][ T4998] __dump_stack+0x30/0x40 [ 85.870450][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.871155][ T4998] dump_stack+0x1c/0x5c [ 85.871803][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.872693][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.873425][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.874146][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.874816][ T4998] inet_sendmsg+0x154/0x284 [ 85.875611][ T4998] __sys_sendto+0x30c/0x420 [ 85.876328][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.877063][ T4998] invoke_syscall+0x98/0x2b0 [ 85.877737][ T4998] el0_svc_common+0x138/0x258 [ 85.878423][ T4998] do_el0_svc+0x58/0x13c [ 85.879158][ T4998] el0_svc+0x78/0x1d0 [ 85.879834][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.880692][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.881887][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.883620][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.884751][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.886375][ T4998] Call trace: [ 85.886939][ T4998] dump_backtrace+0x0/0x458 [ 85.887634][ T4998] show_stack+0x2c/0x3c [ 85.888304][ T4998] __dump_stack+0x30/0x40 [ 85.888918][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.889645][ T4998] dump_stack+0x1c/0x5c [ 85.890243][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.891024][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.891797][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.892559][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.893276][ T4998] inet_sendmsg+0x154/0x284 [ 85.893953][ T4998] __sys_sendto+0x30c/0x420 [ 85.894633][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.895350][ T4998] invoke_syscall+0x98/0x2b0 [ 85.896101][ T4998] el0_svc_common+0x138/0x258 [ 85.896834][ T4998] do_el0_svc+0x58/0x13c [ 85.897506][ T4998] el0_svc+0x78/0x1d0 [ 85.898159][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.898957][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.899916][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.901336][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.902374][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.903785][ T4998] Call trace: [ 85.904229][ T4998] dump_backtrace+0x0/0x458 [ 85.904962][ T4998] show_stack+0x2c/0x3c [ 85.905600][ T4998] __dump_stack+0x30/0x40 [ 85.906358][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.907143][ T4998] dump_stack+0x1c/0x5c [ 85.907857][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.908742][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.909524][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.910291][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.911016][ T4998] inet_sendmsg+0x154/0x284 [ 85.911723][ T4998] __sys_sendto+0x30c/0x420 [ 85.912409][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.913218][ T4998] invoke_syscall+0x98/0x2b0 [ 85.913943][ T4998] el0_svc_common+0x138/0x258 [ 85.914704][ T4998] do_el0_svc+0x58/0x13c [ 85.915421][ T4998] el0_svc+0x78/0x1d0 [ 85.916085][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.916904][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.917784][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.919345][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.920470][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.921989][ T4998] Call trace: [ 85.922504][ T4998] dump_backtrace+0x0/0x458 [ 85.923302][ T4998] show_stack+0x2c/0x3c [ 85.923988][ T4998] __dump_stack+0x30/0x40 [ 85.924701][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.925436][ T4998] dump_stack+0x1c/0x5c [ 85.926111][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.926964][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.927763][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.928506][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.929208][ T4998] inet_sendmsg+0x154/0x284 [ 85.929908][ T4998] __sys_sendto+0x30c/0x420 [ 85.930631][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.931394][ T4998] invoke_syscall+0x98/0x2b0 [ 85.932122][ T4998] el0_svc_common+0x138/0x258 [ 85.932876][ T4998] do_el0_svc+0x58/0x13c [ 85.933520][ T4998] el0_svc+0x78/0x1d0 [ 85.934135][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.934887][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.935909][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.937603][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.938752][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.940174][ T4998] Call trace: [ 85.940697][ T4998] dump_backtrace+0x0/0x458 [ 85.941382][ T4998] show_stack+0x2c/0x3c [ 85.941979][ T4998] __dump_stack+0x30/0x40 [ 85.942705][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.943486][ T4998] dump_stack+0x1c/0x5c [ 85.944126][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.944988][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.945766][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.946550][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.947287][ T4998] inet_sendmsg+0x154/0x284 [ 85.948012][ T4998] __sys_sendto+0x30c/0x420 [ 85.948748][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.949489][ T4998] invoke_syscall+0x98/0x2b0 [ 85.950279][ T4998] el0_svc_common+0x138/0x258 [ 85.951059][ T4998] do_el0_svc+0x58/0x13c [ 85.951738][ T4998] el0_svc+0x78/0x1d0 [ 85.952331][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.953144][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.954045][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.955855][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.956958][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.958562][ T4998] Call trace: [ 85.959082][ T4998] dump_backtrace+0x0/0x458 [ 85.959816][ T4998] show_stack+0x2c/0x3c [ 85.960440][ T4998] __dump_stack+0x30/0x40 [ 85.961096][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.961829][ T4998] dump_stack+0x1c/0x5c [ 85.962462][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.963315][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.964056][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.964770][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.965452][ T4998] inet_sendmsg+0x154/0x284 [ 85.966154][ T4998] __sys_sendto+0x30c/0x420 [ 85.966827][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.967593][ T4998] invoke_syscall+0x98/0x2b0 [ 85.968251][ T4998] el0_svc_common+0x138/0x258 [ 85.968979][ T4998] do_el0_svc+0x58/0x13c [ 85.969653][ T4998] el0_svc+0x78/0x1d0 [ 85.970287][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.971055][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.971919][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.973540][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.974545][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.975975][ T4998] Call trace: [ 85.976445][ T4998] dump_backtrace+0x0/0x458 [ 85.977156][ T4998] show_stack+0x2c/0x3c [ 85.977809][ T4998] __dump_stack+0x30/0x40 [ 85.978500][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.979182][ T4998] dump_stack+0x1c/0x5c [ 85.979900][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.980845][ T4998] dccp_xmit_packet+0x298/0x448 [ 85.981651][ T4998] dccp_write_xmit+0x118/0x1d0 [ 85.982452][ T4998] dccp_sendmsg+0x550/0x8b8 [ 85.983180][ T4998] inet_sendmsg+0x154/0x284 [ 85.983863][ T4998] __sys_sendto+0x30c/0x420 [ 85.984558][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 85.985393][ T4998] invoke_syscall+0x98/0x2b0 [ 85.986175][ T4998] el0_svc_common+0x138/0x258 [ 85.986989][ T4998] do_el0_svc+0x58/0x13c [ 85.987669][ T4998] el0_svc+0x78/0x1d0 [ 85.988284][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 85.989118][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 85.990055][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 85.991699][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 85.992959][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.994517][ T4998] Call trace: [ 85.995008][ T4998] dump_backtrace+0x0/0x458 [ 85.995667][ T4998] show_stack+0x2c/0x3c [ 85.996362][ T4998] __dump_stack+0x30/0x40 [ 85.997084][ T4998] dump_stack_lvl+0xf4/0x15c [ 85.997753][ T4998] dump_stack+0x1c/0x5c [ 85.998379][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 85.999249][ T4998] dccp_xmit_packet+0x298/0x448 [ 86.000008][ T4998] dccp_write_xmit+0x118/0x1d0 [ 86.000770][ T4998] dccp_sendmsg+0x550/0x8b8 [ 86.001469][ T4998] inet_sendmsg+0x154/0x284 [ 86.002130][ T4998] __sys_sendto+0x30c/0x420 [ 86.002788][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 86.003510][ T4998] invoke_syscall+0x98/0x2b0 [ 86.004281][ T4998] el0_svc_common+0x138/0x258 [ 86.005023][ T4998] do_el0_svc+0x58/0x13c [ 86.005730][ T4998] el0_svc+0x78/0x1d0 [ 86.006388][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 86.007209][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 86.008070][ T4998] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.009898][ T4998] CPU: 1 PID: 4998 Comm: syz.0.45 Not tainted syzkaller #0 [ 86.011024][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.012618][ T4998] Call trace: [ 86.013142][ T4998] dump_backtrace+0x0/0x458 [ 86.013831][ T4998] show_stack+0x2c/0x3c [ 86.014487][ T4998] __dump_stack+0x30/0x40 [ 86.015189][ T4998] dump_stack_lvl+0xf4/0x15c [ 86.015943][ T4998] dump_stack+0x1c/0x5c [ 86.016620][ T4998] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.017463][ T4998] dccp_xmit_packet+0x298/0x448 [ 86.018215][ T4998] dccp_write_xmit+0x118/0x1d0 [ 86.018942][ T4998] dccp_sendmsg+0x550/0x8b8 [ 86.019672][ T4998] inet_sendmsg+0x154/0x284 [ 86.020351][ T4998] __sys_sendto+0x30c/0x420 [ 86.021067][ T4998] __arm64_sys_sendto+0xd8/0xf8 [ 86.021823][ T4998] invoke_syscall+0x98/0x2b0 [ 86.022540][ T4998] el0_svc_common+0x138/0x258 [ 86.023266][ T4998] do_el0_svc+0x58/0x13c [ 86.023898][ T4998] el0_svc+0x78/0x1d0 [ 86.024549][ T4998] el0t_64_sync_handler+0xcc/0xe4 [ 86.025253][ T4998] el0t_64_sync+0x1a0/0x1a4 [ 86.037236][ T5001] dccp_xmit_packet: Payload too large (65475) for featneg. [ 86.044715][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.046504][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.047664][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.049235][ T5001] Call trace: [ 86.049747][ T5001] dump_backtrace+0x0/0x458 [ 86.050482][ T5001] show_stack+0x2c/0x3c [ 86.051086][ T5001] __dump_stack+0x30/0x40 [ 86.051767][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.052507][ T5001] dump_stack+0x1c/0x5c [ 86.053171][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.054057][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.054841][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.055547][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.056225][ T5001] inet_sendmsg+0x154/0x284 [ 86.056878][ T5001] __sys_sendto+0x30c/0x420 [ 86.057699][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.058531][ T5001] invoke_syscall+0x98/0x2b0 [ 86.059278][ T5001] el0_svc_common+0x138/0x258 [ 86.060012][ T5001] do_el0_svc+0x58/0x13c [ 86.060719][ T5001] el0_svc+0x78/0x1d0 [ 86.061363][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.062136][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.063483][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.065098][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.066209][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.067692][ T5001] Call trace: [ 86.068181][ T5001] dump_backtrace+0x0/0x458 [ 86.068873][ T5001] show_stack+0x2c/0x3c [ 86.069544][ T5001] __dump_stack+0x30/0x40 [ 86.070204][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.070876][ T5001] dump_stack+0x1c/0x5c [ 86.071472][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.072287][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.073026][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.073795][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.074432][ T5001] inet_sendmsg+0x154/0x284 [ 86.075129][ T5001] __sys_sendto+0x30c/0x420 [ 86.075801][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.076518][ T5001] invoke_syscall+0x98/0x2b0 [ 86.077261][ T5001] el0_svc_common+0x138/0x258 [ 86.078009][ T5001] do_el0_svc+0x58/0x13c [ 86.078678][ T5001] el0_svc+0x78/0x1d0 [ 86.079293][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.080076][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.081318][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.083109][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.084232][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.085771][ T5001] Call trace: [ 86.086263][ T5001] dump_backtrace+0x0/0x458 [ 86.086966][ T5001] show_stack+0x2c/0x3c [ 86.087574][ T5001] __dump_stack+0x30/0x40 [ 86.088257][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.088951][ T5001] dump_stack+0x1c/0x5c [ 86.089579][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.090451][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.091258][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.091955][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.092653][ T5001] inet_sendmsg+0x154/0x284 [ 86.093373][ T5001] __sys_sendto+0x30c/0x420 [ 86.094104][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.094885][ T5001] invoke_syscall+0x98/0x2b0 [ 86.095655][ T5001] el0_svc_common+0x138/0x258 [ 86.096379][ T5001] do_el0_svc+0x58/0x13c [ 86.097060][ T5001] el0_svc+0x78/0x1d0 [ 86.097744][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.098523][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.099353][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.101164][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.102303][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.103869][ T5001] Call trace: [ 86.104401][ T5001] dump_backtrace+0x0/0x458 [ 86.105123][ T5001] show_stack+0x2c/0x3c [ 86.105775][ T5001] __dump_stack+0x30/0x40 [ 86.106427][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.107151][ T5001] dump_stack+0x1c/0x5c [ 86.107792][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.108604][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.109338][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.110163][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.110880][ T5001] inet_sendmsg+0x154/0x284 [ 86.111635][ T5001] __sys_sendto+0x30c/0x420 [ 86.112342][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.113155][ T5001] invoke_syscall+0x98/0x2b0 [ 86.113959][ T5001] el0_svc_common+0x138/0x258 [ 86.114689][ T5001] do_el0_svc+0x58/0x13c [ 86.115341][ T5001] el0_svc+0x78/0x1d0 [ 86.115969][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.116774][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.117775][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.119490][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.120589][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.122152][ T5001] Call trace: [ 86.122669][ T5001] dump_backtrace+0x0/0x458 [ 86.123434][ T5001] show_stack+0x2c/0x3c [ 86.124045][ T5001] __dump_stack+0x30/0x40 [ 86.124754][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.125486][ T5001] dump_stack+0x1c/0x5c [ 86.126166][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.127015][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.127821][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.128617][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.129302][ T5001] inet_sendmsg+0x154/0x284 [ 86.130025][ T5001] __sys_sendto+0x30c/0x420 [ 86.130755][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.131500][ T5001] invoke_syscall+0x98/0x2b0 [ 86.132246][ T5001] el0_svc_common+0x138/0x258 [ 86.133021][ T5001] do_el0_svc+0x58/0x13c [ 86.133703][ T5001] el0_svc+0x78/0x1d0 [ 86.134308][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.135100][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.136029][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.137657][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.138734][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.140203][ T5001] Call trace: [ 86.140722][ T5001] dump_backtrace+0x0/0x458 [ 86.141412][ T5001] show_stack+0x2c/0x3c [ 86.141984][ T5001] __dump_stack+0x30/0x40 [ 86.142599][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.143248][ T5001] dump_stack+0x1c/0x5c [ 86.143858][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.144610][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.145336][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.146004][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.146609][ T5001] inet_sendmsg+0x154/0x284 [ 86.147320][ T5001] __sys_sendto+0x30c/0x420 [ 86.148005][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.148744][ T5001] invoke_syscall+0x98/0x2b0 [ 86.149444][ T5001] el0_svc_common+0x138/0x258 [ 86.150216][ T5001] do_el0_svc+0x58/0x13c [ 86.150896][ T5001] el0_svc+0x78/0x1d0 [ 86.151531][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.152315][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.153356][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.155121][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.156193][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.157658][ T5001] Call trace: [ 86.158100][ T5001] dump_backtrace+0x0/0x458 [ 86.158771][ T5001] show_stack+0x2c/0x3c [ 86.159447][ T5001] __dump_stack+0x30/0x40 [ 86.160094][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.160821][ T5001] dump_stack+0x1c/0x5c [ 86.161437][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.162287][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.163020][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.163764][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.164476][ T5001] inet_sendmsg+0x154/0x284 [ 86.165143][ T5001] __sys_sendto+0x30c/0x420 [ 86.165767][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.166504][ T5001] invoke_syscall+0x98/0x2b0 [ 86.167157][ T5001] el0_svc_common+0x138/0x258 [ 86.167821][ T5001] do_el0_svc+0x58/0x13c [ 86.168500][ T5001] el0_svc+0x78/0x1d0 [ 86.169086][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.169854][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.170716][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.172623][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.173801][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.175408][ T5001] Call trace: [ 86.175966][ T5001] dump_backtrace+0x0/0x458 [ 86.176639][ T5001] show_stack+0x2c/0x3c [ 86.177269][ T5001] __dump_stack+0x30/0x40 [ 86.177951][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.178730][ T5001] dump_stack+0x1c/0x5c [ 86.179451][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.180323][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.181149][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.181881][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.182605][ T5001] inet_sendmsg+0x154/0x284 [ 86.183305][ T5001] __sys_sendto+0x30c/0x420 [ 86.184033][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.184814][ T5001] invoke_syscall+0x98/0x2b0 [ 86.185587][ T5001] el0_svc_common+0x138/0x258 [ 86.186384][ T5001] do_el0_svc+0x58/0x13c [ 86.187081][ T5001] el0_svc+0x78/0x1d0 [ 86.187736][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.188613][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.189751][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.191458][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.192574][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.194233][ T5001] Call trace: [ 86.194797][ T5001] dump_backtrace+0x0/0x458 [ 86.195614][ T5001] show_stack+0x2c/0x3c [ 86.196317][ T5001] __dump_stack+0x30/0x40 [ 86.197056][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.197824][ T5001] dump_stack+0x1c/0x5c [ 86.198567][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.199507][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.200273][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.201036][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.201702][ T5001] inet_sendmsg+0x154/0x284 [ 86.202448][ T5001] __sys_sendto+0x30c/0x420 [ 86.203145][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.203990][ T5001] invoke_syscall+0x98/0x2b0 [ 86.204793][ T5001] el0_svc_common+0x138/0x258 [ 86.205504][ T5001] do_el0_svc+0x58/0x13c [ 86.206241][ T5001] el0_svc+0x78/0x1d0 [ 86.206918][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.207740][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.208657][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.210238][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.211221][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.212862][ T5001] Call trace: [ 86.213404][ T5001] dump_backtrace+0x0/0x458 [ 86.214156][ T5001] show_stack+0x2c/0x3c [ 86.214823][ T5001] __dump_stack+0x30/0x40 [ 86.215491][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.216221][ T5001] dump_stack+0x1c/0x5c [ 86.216853][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.217726][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.218470][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.219202][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.219925][ T5001] inet_sendmsg+0x154/0x284 [ 86.220614][ T5001] __sys_sendto+0x30c/0x420 [ 86.221287][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.222034][ T5001] invoke_syscall+0x98/0x2b0 [ 86.222711][ T5001] el0_svc_common+0x138/0x258 [ 86.223424][ T5001] do_el0_svc+0x58/0x13c [ 86.224061][ T5001] el0_svc+0x78/0x1d0 [ 86.224699][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.225480][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.226304][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.227922][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.228894][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.230540][ T5001] Call trace: [ 86.231074][ T5001] dump_backtrace+0x0/0x458 [ 86.231871][ T5001] show_stack+0x2c/0x3c [ 86.232592][ T5001] __dump_stack+0x30/0x40 [ 86.233292][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.234019][ T5001] dump_stack+0x1c/0x5c [ 86.234670][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.235503][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.236274][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.236943][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.237633][ T5001] inet_sendmsg+0x154/0x284 [ 86.238376][ T5001] __sys_sendto+0x30c/0x420 [ 86.239105][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.239873][ T5001] invoke_syscall+0x98/0x2b0 [ 86.240616][ T5001] el0_svc_common+0x138/0x258 [ 86.241332][ T5001] do_el0_svc+0x58/0x13c [ 86.242006][ T5001] el0_svc+0x78/0x1d0 [ 86.242631][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.243409][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.244400][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.246155][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.247317][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.248938][ T5001] Call trace: [ 86.249422][ T5001] dump_backtrace+0x0/0x458 [ 86.250085][ T5001] show_stack+0x2c/0x3c [ 86.250745][ T5001] __dump_stack+0x30/0x40 [ 86.251437][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.252142][ T5001] dump_stack+0x1c/0x5c [ 86.252793][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.253677][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.254459][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.255210][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.255939][ T5001] inet_sendmsg+0x154/0x284 [ 86.256659][ T5001] __sys_sendto+0x30c/0x420 [ 86.257348][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.258105][ T5001] invoke_syscall+0x98/0x2b0 [ 86.258900][ T5001] el0_svc_common+0x138/0x258 [ 86.259707][ T5001] do_el0_svc+0x58/0x13c [ 86.260376][ T5001] el0_svc+0x78/0x1d0 [ 86.260975][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.261787][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.262670][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.264311][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.265359][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.267001][ T5001] Call trace: [ 86.267505][ T5001] dump_backtrace+0x0/0x458 [ 86.268235][ T5001] show_stack+0x2c/0x3c [ 86.268908][ T5001] __dump_stack+0x30/0x40 [ 86.269567][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.270232][ T5001] dump_stack+0x1c/0x5c [ 86.270920][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.271807][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.272676][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.273452][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.274217][ T5001] inet_sendmsg+0x154/0x284 [ 86.274997][ T5001] __sys_sendto+0x30c/0x420 [ 86.275779][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.276608][ T5001] invoke_syscall+0x98/0x2b0 [ 86.277384][ T5001] el0_svc_common+0x138/0x258 [ 86.278113][ T5001] do_el0_svc+0x58/0x13c [ 86.278814][ T5001] el0_svc+0x78/0x1d0 [ 86.279452][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.280338][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.281213][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.282932][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.284009][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.285523][ T5001] Call trace: [ 86.286034][ T5001] dump_backtrace+0x0/0x458 [ 86.286753][ T5001] show_stack+0x2c/0x3c [ 86.287438][ T5001] __dump_stack+0x30/0x40 [ 86.288138][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.288871][ T5001] dump_stack+0x1c/0x5c [ 86.289489][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.290330][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.290996][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.291752][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.292483][ T5001] inet_sendmsg+0x154/0x284 [ 86.293247][ T5001] __sys_sendto+0x30c/0x420 [ 86.293969][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.294758][ T5001] invoke_syscall+0x98/0x2b0 [ 86.295525][ T5001] el0_svc_common+0x138/0x258 [ 86.296246][ T5001] do_el0_svc+0x58/0x13c [ 86.296909][ T5001] el0_svc+0x78/0x1d0 [ 86.297568][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.298353][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.299213][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.301044][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.302173][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.303765][ T5001] Call trace: [ 86.304294][ T5001] dump_backtrace+0x0/0x458 [ 86.305037][ T5001] show_stack+0x2c/0x3c [ 86.305745][ T5001] __dump_stack+0x30/0x40 [ 86.306493][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.307215][ T5001] dump_stack+0x1c/0x5c [ 86.307844][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.308746][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.309532][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.310258][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.310959][ T5001] inet_sendmsg+0x154/0x284 [ 86.311668][ T5001] __sys_sendto+0x30c/0x420 [ 86.312370][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.313179][ T5001] invoke_syscall+0x98/0x2b0 [ 86.313902][ T5001] el0_svc_common+0x138/0x258 [ 86.314680][ T5001] do_el0_svc+0x58/0x13c [ 86.315378][ T5001] el0_svc+0x78/0x1d0 [ 86.316046][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.316846][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.317720][ T5001] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.319435][ T5001] CPU: 1 PID: 5001 Comm: syz.0.46 Not tainted syzkaller #0 [ 86.320590][ T5001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.322176][ T5001] Call trace: [ 86.322682][ T5001] dump_backtrace+0x0/0x458 [ 86.323369][ T5001] show_stack+0x2c/0x3c [ 86.324030][ T5001] __dump_stack+0x30/0x40 [ 86.324713][ T5001] dump_stack_lvl+0xf4/0x15c [ 86.325440][ T5001] dump_stack+0x1c/0x5c [ 86.326156][ T5001] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.327070][ T5001] dccp_xmit_packet+0x298/0x448 [ 86.327824][ T5001] dccp_write_xmit+0x118/0x1d0 [ 86.328568][ T5001] dccp_sendmsg+0x550/0x8b8 [ 86.329313][ T5001] inet_sendmsg+0x154/0x284 [ 86.330078][ T5001] __sys_sendto+0x30c/0x420 [ 86.330834][ T5001] __arm64_sys_sendto+0xd8/0xf8 [ 86.331630][ T5001] invoke_syscall+0x98/0x2b0 [ 86.332366][ T5001] el0_svc_common+0x138/0x258 [ 86.333149][ T5001] do_el0_svc+0x58/0x13c [ 86.333852][ T5001] el0_svc+0x78/0x1d0 [ 86.334498][ T5001] el0t_64_sync_handler+0xcc/0xe4 [ 86.335340][ T5001] el0t_64_sync+0x1a0/0x1a4 [ 86.353979][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.355746][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.356903][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.358580][ T5003] Call trace: [ 86.359094][ T5003] dump_backtrace+0x0/0x458 [ 86.359803][ T5003] show_stack+0x2c/0x3c [ 86.360445][ T5003] __dump_stack+0x30/0x40 [ 86.361148][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.361867][ T5003] dump_stack+0x1c/0x5c [ 86.362542][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.363422][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.364203][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.365009][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.365687][ T5003] inet_sendmsg+0x154/0x284 [ 86.366358][ T5003] __sys_sendto+0x30c/0x420 [ 86.367053][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.367825][ T5003] invoke_syscall+0x98/0x2b0 [ 86.368515][ T5003] el0_svc_common+0x138/0x258 [ 86.369281][ T5003] do_el0_svc+0x58/0x13c [ 86.369935][ T5003] el0_svc+0x78/0x1d0 [ 86.370598][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.371434][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.372358][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.373972][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.375002][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.376680][ T5003] Call trace: [ 86.377226][ T5003] dump_backtrace+0x0/0x458 [ 86.377986][ T5003] show_stack+0x2c/0x3c [ 86.378680][ T5003] __dump_stack+0x30/0x40 [ 86.379408][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.380180][ T5003] dump_stack+0x1c/0x5c [ 86.380891][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.381742][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.382532][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.383305][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.384005][ T5003] inet_sendmsg+0x154/0x284 [ 86.384691][ T5003] __sys_sendto+0x30c/0x420 [ 86.385423][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.386228][ T5003] invoke_syscall+0x98/0x2b0 [ 86.386980][ T5003] el0_svc_common+0x138/0x258 [ 86.387775][ T5003] do_el0_svc+0x58/0x13c [ 86.388448][ T5003] el0_svc+0x78/0x1d0 [ 86.389081][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.389909][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.391212][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.393070][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.394182][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.395732][ T5003] Call trace: [ 86.396243][ T5003] dump_backtrace+0x0/0x458 [ 86.396949][ T5003] show_stack+0x2c/0x3c [ 86.397634][ T5003] __dump_stack+0x30/0x40 [ 86.398295][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.399046][ T5003] dump_stack+0x1c/0x5c [ 86.399705][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.400650][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.401464][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.402245][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.403016][ T5003] inet_sendmsg+0x154/0x284 [ 86.403737][ T5003] __sys_sendto+0x30c/0x420 [ 86.404405][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.405159][ T5003] invoke_syscall+0x98/0x2b0 [ 86.405926][ T5003] el0_svc_common+0x138/0x258 [ 86.406731][ T5003] do_el0_svc+0x58/0x13c [ 86.407400][ T5003] el0_svc+0x78/0x1d0 [ 86.408020][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.408776][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.409710][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.411422][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.412549][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.414180][ T5003] Call trace: [ 86.414702][ T5003] dump_backtrace+0x0/0x458 [ 86.415456][ T5003] show_stack+0x2c/0x3c [ 86.416141][ T5003] __dump_stack+0x30/0x40 [ 86.416830][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.417522][ T5003] dump_stack+0x1c/0x5c [ 86.418146][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.418963][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.419691][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.420410][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.421122][ T5003] inet_sendmsg+0x154/0x284 [ 86.421814][ T5003] __sys_sendto+0x30c/0x420 [ 86.422422][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.423082][ T5003] invoke_syscall+0x98/0x2b0 [ 86.423781][ T5003] el0_svc_common+0x138/0x258 [ 86.424473][ T5003] do_el0_svc+0x58/0x13c [ 86.425103][ T5003] el0_svc+0x78/0x1d0 [ 86.425657][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.426398][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.427281][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.428855][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.429924][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.431385][ T5003] Call trace: [ 86.431893][ T5003] dump_backtrace+0x0/0x458 [ 86.432611][ T5003] show_stack+0x2c/0x3c [ 86.433250][ T5003] __dump_stack+0x30/0x40 [ 86.433925][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.434691][ T5003] dump_stack+0x1c/0x5c [ 86.435373][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.436208][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.436951][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.437703][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.438417][ T5003] inet_sendmsg+0x154/0x284 [ 86.439131][ T5003] __sys_sendto+0x30c/0x420 [ 86.439872][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.440648][ T5003] invoke_syscall+0x98/0x2b0 [ 86.441387][ T5003] el0_svc_common+0x138/0x258 [ 86.442198][ T5003] do_el0_svc+0x58/0x13c [ 86.442827][ T5003] el0_svc+0x78/0x1d0 [ 86.443430][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.444167][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.445134][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.446923][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.448086][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.449718][ T5003] Call trace: [ 86.450227][ T5003] dump_backtrace+0x0/0x458 [ 86.450945][ T5003] show_stack+0x2c/0x3c [ 86.451580][ T5003] __dump_stack+0x30/0x40 [ 86.452238][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.452938][ T5003] dump_stack+0x1c/0x5c [ 86.453594][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.454482][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.455320][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.456080][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.456790][ T5003] inet_sendmsg+0x154/0x284 [ 86.457480][ T5003] __sys_sendto+0x30c/0x420 [ 86.458224][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.458990][ T5003] invoke_syscall+0x98/0x2b0 [ 86.459722][ T5003] el0_svc_common+0x138/0x258 [ 86.460498][ T5003] do_el0_svc+0x58/0x13c [ 86.461211][ T5003] el0_svc+0x78/0x1d0 [ 86.461889][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.462765][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.463803][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.465560][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.466696][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.468276][ T5003] Call trace: [ 86.468810][ T5003] dump_backtrace+0x0/0x458 [ 86.469555][ T5003] show_stack+0x2c/0x3c [ 86.470204][ T5003] __dump_stack+0x30/0x40 [ 86.470892][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.471652][ T5003] dump_stack+0x1c/0x5c [ 86.472358][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.473205][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.474036][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.474816][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.475560][ T5003] inet_sendmsg+0x154/0x284 [ 86.476313][ T5003] __sys_sendto+0x30c/0x420 [ 86.477020][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.477824][ T5003] invoke_syscall+0x98/0x2b0 [ 86.478616][ T5003] el0_svc_common+0x138/0x258 [ 86.479359][ T5003] do_el0_svc+0x58/0x13c [ 86.480026][ T5003] el0_svc+0x78/0x1d0 [ 86.480691][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.481506][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.482645][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.484345][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.485436][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.486958][ T5003] Call trace: [ 86.487470][ T5003] dump_backtrace+0x0/0x458 [ 86.488176][ T5003] show_stack+0x2c/0x3c [ 86.488836][ T5003] __dump_stack+0x30/0x40 [ 86.489540][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.490267][ T5003] dump_stack+0x1c/0x5c [ 86.490864][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.491721][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.492432][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.493240][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.493979][ T5003] inet_sendmsg+0x154/0x284 [ 86.494753][ T5003] __sys_sendto+0x30c/0x420 [ 86.495513][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.496264][ T5003] invoke_syscall+0x98/0x2b0 [ 86.496966][ T5003] el0_svc_common+0x138/0x258 [ 86.497775][ T5003] do_el0_svc+0x58/0x13c [ 86.498471][ T5003] el0_svc+0x78/0x1d0 [ 86.499143][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.499930][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.500810][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.502560][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.503729][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.505432][ T5003] Call trace: [ 86.505930][ T5003] dump_backtrace+0x0/0x458 [ 86.506643][ T5003] show_stack+0x2c/0x3c [ 86.507263][ T5003] __dump_stack+0x30/0x40 [ 86.507944][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.508673][ T5003] dump_stack+0x1c/0x5c [ 86.509359][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.510269][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.511002][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.511805][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.512510][ T5003] inet_sendmsg+0x154/0x284 [ 86.513226][ T5003] __sys_sendto+0x30c/0x420 [ 86.513977][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.514784][ T5003] invoke_syscall+0x98/0x2b0 [ 86.515561][ T5003] el0_svc_common+0x138/0x258 [ 86.516300][ T5003] do_el0_svc+0x58/0x13c [ 86.516997][ T5003] el0_svc+0x78/0x1d0 [ 86.517652][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.518476][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.519426][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.521303][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.522518][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.524139][ T5003] Call trace: [ 86.524677][ T5003] dump_backtrace+0x0/0x458 [ 86.525416][ T5003] show_stack+0x2c/0x3c [ 86.526026][ T5003] __dump_stack+0x30/0x40 [ 86.526677][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.527437][ T5003] dump_stack+0x1c/0x5c [ 86.528122][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.529035][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.529828][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.530632][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.531373][ T5003] inet_sendmsg+0x154/0x284 [ 86.532060][ T5003] __sys_sendto+0x30c/0x420 [ 86.532746][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.533509][ T5003] invoke_syscall+0x98/0x2b0 [ 86.534225][ T5003] el0_svc_common+0x138/0x258 [ 86.535016][ T5003] do_el0_svc+0x58/0x13c [ 86.535685][ T5003] el0_svc+0x78/0x1d0 [ 86.536329][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.537125][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.538058][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.539763][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.540811][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.542473][ T5003] Call trace: [ 86.543025][ T5003] dump_backtrace+0x0/0x458 [ 86.543765][ T5003] show_stack+0x2c/0x3c [ 86.544399][ T5003] __dump_stack+0x30/0x40 [ 86.545101][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.545883][ T5003] dump_stack+0x1c/0x5c [ 86.546549][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.547400][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.548185][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.548955][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.549682][ T5003] inet_sendmsg+0x154/0x284 [ 86.550405][ T5003] __sys_sendto+0x30c/0x420 [ 86.551110][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.551851][ T5003] invoke_syscall+0x98/0x2b0 [ 86.552626][ T5003] el0_svc_common+0x138/0x258 [ 86.553445][ T5003] do_el0_svc+0x58/0x13c [ 86.554174][ T5003] el0_svc+0x78/0x1d0 [ 86.554840][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.555693][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.556672][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.558285][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.559463][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.561124][ T5003] Call trace: [ 86.561653][ T5003] dump_backtrace+0x0/0x458 [ 86.562372][ T5003] show_stack+0x2c/0x3c [ 86.563022][ T5003] __dump_stack+0x30/0x40 [ 86.563698][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.564423][ T5003] dump_stack+0x1c/0x5c [ 86.565069][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.565899][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.566661][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.567494][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.568201][ T5003] inet_sendmsg+0x154/0x284 [ 86.568913][ T5003] __sys_sendto+0x30c/0x420 [ 86.569647][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.570439][ T5003] invoke_syscall+0x98/0x2b0 [ 86.571245][ T5003] el0_svc_common+0x138/0x258 [ 86.571993][ T5003] do_el0_svc+0x58/0x13c [ 86.572734][ T5003] el0_svc+0x78/0x1d0 [ 86.573427][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.574305][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.575218][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.576893][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.577983][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.579440][ T5003] Call trace: [ 86.579955][ T5003] dump_backtrace+0x0/0x458 [ 86.580671][ T5003] show_stack+0x2c/0x3c [ 86.581339][ T5003] __dump_stack+0x30/0x40 [ 86.582035][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.582745][ T5003] dump_stack+0x1c/0x5c [ 86.583408][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.584267][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.585040][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.585826][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.586552][ T5003] inet_sendmsg+0x154/0x284 [ 86.587245][ T5003] __sys_sendto+0x30c/0x420 [ 86.587975][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.588692][ T5003] invoke_syscall+0x98/0x2b0 [ 86.589487][ T5003] el0_svc_common+0x138/0x258 [ 86.590229][ T5003] do_el0_svc+0x58/0x13c [ 86.590938][ T5003] el0_svc+0x78/0x1d0 [ 86.591561][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.592425][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.593397][ T5003] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.594916][ T5003] CPU: 1 PID: 5003 Comm: syz.0.47 Not tainted syzkaller #0 [ 86.596021][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.597579][ T5003] Call trace: [ 86.598106][ T5003] dump_backtrace+0x0/0x458 [ 86.598775][ T5003] show_stack+0x2c/0x3c [ 86.599425][ T5003] __dump_stack+0x30/0x40 [ 86.600089][ T5003] dump_stack_lvl+0xf4/0x15c [ 86.600792][ T5003] dump_stack+0x1c/0x5c [ 86.601406][ T5003] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.602318][ T5003] dccp_xmit_packet+0x298/0x448 [ 86.603111][ T5003] dccp_write_xmit+0x118/0x1d0 [ 86.603918][ T5003] dccp_sendmsg+0x550/0x8b8 [ 86.604727][ T5003] inet_sendmsg+0x154/0x284 [ 86.605447][ T5003] __sys_sendto+0x30c/0x420 [ 86.606200][ T5003] __arm64_sys_sendto+0xd8/0xf8 [ 86.606973][ T5003] invoke_syscall+0x98/0x2b0 [ 86.607710][ T5003] el0_svc_common+0x138/0x258 [ 86.608473][ T5003] do_el0_svc+0x58/0x13c [ 86.609184][ T5003] el0_svc+0x78/0x1d0 [ 86.609818][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 86.610599][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 86.628556][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.630359][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.631530][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.633061][ T5005] Call trace: [ 86.633596][ T5005] dump_backtrace+0x0/0x458 [ 86.634288][ T5005] show_stack+0x2c/0x3c [ 86.634956][ T5005] __dump_stack+0x30/0x40 [ 86.635724][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.636480][ T5005] dump_stack+0x1c/0x5c [ 86.637220][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.638101][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.638896][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.639628][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.640319][ T5005] inet_sendmsg+0x154/0x284 [ 86.641018][ T5005] __sys_sendto+0x30c/0x420 [ 86.641713][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.642538][ T5005] invoke_syscall+0x98/0x2b0 [ 86.643276][ T5005] el0_svc_common+0x138/0x258 [ 86.644008][ T5005] do_el0_svc+0x58/0x13c [ 86.644697][ T5005] el0_svc+0x78/0x1d0 [ 86.645353][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.646197][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.647142][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.648835][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.649956][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.651511][ T5005] Call trace: [ 86.652025][ T5005] dump_backtrace+0x0/0x458 [ 86.652747][ T5005] show_stack+0x2c/0x3c [ 86.653414][ T5005] __dump_stack+0x30/0x40 [ 86.654110][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.654849][ T5005] dump_stack+0x1c/0x5c [ 86.655505][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.656368][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.657135][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.657904][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.658627][ T5005] inet_sendmsg+0x154/0x284 [ 86.659350][ T5005] __sys_sendto+0x30c/0x420 [ 86.660053][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.660839][ T5005] invoke_syscall+0x98/0x2b0 [ 86.661596][ T5005] el0_svc_common+0x138/0x258 [ 86.662367][ T5005] do_el0_svc+0x58/0x13c [ 86.663055][ T5005] el0_svc+0x78/0x1d0 [ 86.663710][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.664455][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.665494][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.667225][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.668366][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.669914][ T5005] Call trace: [ 86.670419][ T5005] dump_backtrace+0x0/0x458 [ 86.671151][ T5005] show_stack+0x2c/0x3c [ 86.671801][ T5005] __dump_stack+0x30/0x40 [ 86.672482][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.673263][ T5005] dump_stack+0x1c/0x5c [ 86.673992][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.674874][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.675665][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.676416][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.677104][ T5005] inet_sendmsg+0x154/0x284 [ 86.677826][ T5005] __sys_sendto+0x30c/0x420 [ 86.678548][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.679323][ T5005] invoke_syscall+0x98/0x2b0 [ 86.679996][ T5005] el0_svc_common+0x138/0x258 [ 86.680791][ T5005] do_el0_svc+0x58/0x13c [ 86.681516][ T5005] el0_svc+0x78/0x1d0 [ 86.682165][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.682945][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.684361][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.686088][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.687178][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.688613][ T5005] Call trace: [ 86.689114][ T5005] dump_backtrace+0x0/0x458 [ 86.689793][ T5005] show_stack+0x2c/0x3c [ 86.690427][ T5005] __dump_stack+0x30/0x40 [ 86.691072][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.691761][ T5005] dump_stack+0x1c/0x5c [ 86.692479][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.693322][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.694125][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.694885][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.695561][ T5005] inet_sendmsg+0x154/0x284 [ 86.696261][ T5005] __sys_sendto+0x30c/0x420 [ 86.697010][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.697810][ T5005] invoke_syscall+0x98/0x2b0 [ 86.698544][ T5005] el0_svc_common+0x138/0x258 [ 86.699278][ T5005] do_el0_svc+0x58/0x13c [ 86.699952][ T5005] el0_svc+0x78/0x1d0 [ 86.700561][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.701301][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.702213][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.704072][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.705221][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.706806][ T5005] Call trace: [ 86.707314][ T5005] dump_backtrace+0x0/0x458 [ 86.708077][ T5005] show_stack+0x2c/0x3c [ 86.708683][ T5005] __dump_stack+0x30/0x40 [ 86.709334][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.710100][ T5005] dump_stack+0x1c/0x5c [ 86.710794][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.711730][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.712575][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.713351][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.714072][ T5005] inet_sendmsg+0x154/0x284 [ 86.714799][ T5005] __sys_sendto+0x30c/0x420 [ 86.715515][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.716287][ T5005] invoke_syscall+0x98/0x2b0 [ 86.717052][ T5005] el0_svc_common+0x138/0x258 [ 86.717814][ T5005] do_el0_svc+0x58/0x13c [ 86.718514][ T5005] el0_svc+0x78/0x1d0 [ 86.719246][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.720087][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.721011][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.723240][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.724339][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.725785][ T5005] Call trace: [ 86.726284][ T5005] dump_backtrace+0x0/0x458 [ 86.727045][ T5005] show_stack+0x2c/0x3c [ 86.727725][ T5005] __dump_stack+0x30/0x40 [ 86.728410][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.729157][ T5005] dump_stack+0x1c/0x5c [ 86.729796][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.730640][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.731345][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.732075][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.732829][ T5005] inet_sendmsg+0x154/0x284 [ 86.733574][ T5005] __sys_sendto+0x30c/0x420 [ 86.734340][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.735107][ T5005] invoke_syscall+0x98/0x2b0 [ 86.735885][ T5005] el0_svc_common+0x138/0x258 [ 86.736645][ T5005] do_el0_svc+0x58/0x13c [ 86.737299][ T5005] el0_svc+0x78/0x1d0 [ 86.737960][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.738730][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.739642][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.741353][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.742397][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.743871][ T5005] Call trace: [ 86.744337][ T5005] dump_backtrace+0x0/0x458 [ 86.744958][ T5005] show_stack+0x2c/0x3c [ 86.745557][ T5005] __dump_stack+0x30/0x40 [ 86.746153][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.746801][ T5005] dump_stack+0x1c/0x5c [ 86.747391][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.748195][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.748886][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.749564][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.750220][ T5005] inet_sendmsg+0x154/0x284 [ 86.750926][ T5005] __sys_sendto+0x30c/0x420 [ 86.751582][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.752306][ T5005] invoke_syscall+0x98/0x2b0 [ 86.752977][ T5005] el0_svc_common+0x138/0x258 [ 86.753714][ T5005] do_el0_svc+0x58/0x13c [ 86.754348][ T5005] el0_svc+0x78/0x1d0 [ 86.754896][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.755741][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.756733][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.758550][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.759678][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.761229][ T5005] Call trace: [ 86.761726][ T5005] dump_backtrace+0x0/0x458 [ 86.762411][ T5005] show_stack+0x2c/0x3c [ 86.763042][ T5005] __dump_stack+0x30/0x40 [ 86.763785][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.764522][ T5005] dump_stack+0x1c/0x5c [ 86.765203][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.766074][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.766801][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.767625][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.768390][ T5005] inet_sendmsg+0x154/0x284 [ 86.769127][ T5005] __sys_sendto+0x30c/0x420 [ 86.769857][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.770637][ T5005] invoke_syscall+0x98/0x2b0 [ 86.771395][ T5005] el0_svc_common+0x138/0x258 [ 86.772199][ T5005] do_el0_svc+0x58/0x13c [ 86.772896][ T5005] el0_svc+0x78/0x1d0 [ 86.773563][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.774420][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.775353][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.777082][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.778228][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.779777][ T5005] Call trace: [ 86.780283][ T5005] dump_backtrace+0x0/0x458 [ 86.780969][ T5005] show_stack+0x2c/0x3c [ 86.781597][ T5005] __dump_stack+0x30/0x40 [ 86.782247][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.783017][ T5005] dump_stack+0x1c/0x5c [ 86.783714][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.784552][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.785374][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.786108][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.786854][ T5005] inet_sendmsg+0x154/0x284 [ 86.787534][ T5005] __sys_sendto+0x30c/0x420 [ 86.788273][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.789026][ T5005] invoke_syscall+0x98/0x2b0 [ 86.789779][ T5005] el0_svc_common+0x138/0x258 [ 86.790500][ T5005] do_el0_svc+0x58/0x13c [ 86.791158][ T5005] el0_svc+0x78/0x1d0 [ 86.791771][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.792539][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.793440][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.795116][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.796246][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.797757][ T5005] Call trace: [ 86.798307][ T5005] dump_backtrace+0x0/0x458 [ 86.798998][ T5005] show_stack+0x2c/0x3c [ 86.799642][ T5005] __dump_stack+0x30/0x40 [ 86.800336][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.801017][ T5005] dump_stack+0x1c/0x5c [ 86.801627][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.802564][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.803410][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.804158][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.804837][ T5005] inet_sendmsg+0x154/0x284 [ 86.805502][ T5005] __sys_sendto+0x30c/0x420 [ 86.806271][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.807081][ T5005] invoke_syscall+0x98/0x2b0 [ 86.807828][ T5005] el0_svc_common+0x138/0x258 [ 86.808606][ T5005] do_el0_svc+0x58/0x13c [ 86.809324][ T5005] el0_svc+0x78/0x1d0 [ 86.810004][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.810811][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.811768][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.813537][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.814748][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.816242][ T5005] Call trace: [ 86.816790][ T5005] dump_backtrace+0x0/0x458 [ 86.817419][ T5005] show_stack+0x2c/0x3c [ 86.818065][ T5005] __dump_stack+0x30/0x40 [ 86.818731][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.819468][ T5005] dump_stack+0x1c/0x5c [ 86.820109][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.820960][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.821710][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.822477][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.823255][ T5005] inet_sendmsg+0x154/0x284 [ 86.824066][ T5005] __sys_sendto+0x30c/0x420 [ 86.824850][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.825676][ T5005] invoke_syscall+0x98/0x2b0 [ 86.826365][ T5005] el0_svc_common+0x138/0x258 [ 86.827127][ T5005] do_el0_svc+0x58/0x13c [ 86.827808][ T5005] el0_svc+0x78/0x1d0 [ 86.828399][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.829280][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.830157][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.832232][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.833286][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.834943][ T5005] Call trace: [ 86.835487][ T5005] dump_backtrace+0x0/0x458 [ 86.836182][ T5005] show_stack+0x2c/0x3c [ 86.836881][ T5005] __dump_stack+0x30/0x40 [ 86.837554][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.838319][ T5005] dump_stack+0x1c/0x5c [ 86.838997][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.839865][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.840600][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.841423][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.842186][ T5005] inet_sendmsg+0x154/0x284 [ 86.842916][ T5005] __sys_sendto+0x30c/0x420 [ 86.843577][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.844430][ T5005] invoke_syscall+0x98/0x2b0 [ 86.845140][ T5005] el0_svc_common+0x138/0x258 [ 86.845868][ T5005] do_el0_svc+0x58/0x13c [ 86.846554][ T5005] el0_svc+0x78/0x1d0 [ 86.847179][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.848024][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.849468][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.851131][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.852330][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.853959][ T5005] Call trace: [ 86.854477][ T5005] dump_backtrace+0x0/0x458 [ 86.855156][ T5005] show_stack+0x2c/0x3c [ 86.855805][ T5005] __dump_stack+0x30/0x40 [ 86.856496][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.857189][ T5005] dump_stack+0x1c/0x5c [ 86.857870][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.858772][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.859569][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.860238][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.860944][ T5005] inet_sendmsg+0x154/0x284 [ 86.861671][ T5005] __sys_sendto+0x30c/0x420 [ 86.862392][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.863176][ T5005] invoke_syscall+0x98/0x2b0 [ 86.863871][ T5005] el0_svc_common+0x138/0x258 [ 86.864576][ T5005] do_el0_svc+0x58/0x13c [ 86.865166][ T5005] el0_svc+0x78/0x1d0 [ 86.865715][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.866434][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.867391][ T5005] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.869125][ T5005] CPU: 0 PID: 5005 Comm: syz.0.48 Not tainted syzkaller #0 [ 86.870303][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.871993][ T5005] Call trace: [ 86.872525][ T5005] dump_backtrace+0x0/0x458 [ 86.873243][ T5005] show_stack+0x2c/0x3c [ 86.873942][ T5005] __dump_stack+0x30/0x40 [ 86.874616][ T5005] dump_stack_lvl+0xf4/0x15c [ 86.875411][ T5005] dump_stack+0x1c/0x5c [ 86.876078][ T5005] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.876947][ T5005] dccp_xmit_packet+0x298/0x448 [ 86.877767][ T5005] dccp_write_xmit+0x118/0x1d0 [ 86.878514][ T5005] dccp_sendmsg+0x550/0x8b8 [ 86.879253][ T5005] inet_sendmsg+0x154/0x284 [ 86.879982][ T5005] __sys_sendto+0x30c/0x420 [ 86.880714][ T5005] __arm64_sys_sendto+0xd8/0xf8 [ 86.881501][ T5005] invoke_syscall+0x98/0x2b0 [ 86.882250][ T5005] el0_svc_common+0x138/0x258 [ 86.882971][ T5005] do_el0_svc+0x58/0x13c [ 86.883722][ T5005] el0_svc+0x78/0x1d0 [ 86.884356][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 86.885192][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 86.902761][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.904779][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 86.905956][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.907525][ T5007] Call trace: [ 86.908034][ T5007] dump_backtrace+0x0/0x458 [ 86.908725][ T5007] show_stack+0x2c/0x3c [ 86.909395][ T5007] __dump_stack+0x30/0x40 [ 86.910114][ T5007] dump_stack_lvl+0xf4/0x15c [ 86.910854][ T5007] dump_stack+0x1c/0x5c [ 86.911540][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.912382][ T5007] dccp_xmit_packet+0x298/0x448 [ 86.913179][ T5007] dccp_write_xmit+0x118/0x1d0 [ 86.913908][ T5007] dccp_sendmsg+0x550/0x8b8 [ 86.914570][ T5007] inet_sendmsg+0x154/0x284 [ 86.915254][ T5007] __sys_sendto+0x30c/0x420 [ 86.915911][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 86.916688][ T5007] invoke_syscall+0x98/0x2b0 [ 86.917465][ T5007] el0_svc_common+0x138/0x258 [ 86.918114][ T5007] do_el0_svc+0x58/0x13c [ 86.918802][ T5007] el0_svc+0x78/0x1d0 [ 86.919415][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 86.920183][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 86.921069][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.923271][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 86.924300][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.925720][ T5007] Call trace: [ 86.926206][ T5007] dump_backtrace+0x0/0x458 [ 86.926837][ T5007] show_stack+0x2c/0x3c [ 86.927421][ T5007] __dump_stack+0x30/0x40 [ 86.928073][ T5007] dump_stack_lvl+0xf4/0x15c [ 86.928795][ T5007] dump_stack+0x1c/0x5c [ 86.929469][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.930274][ T5007] dccp_xmit_packet+0x298/0x448 [ 86.930975][ T5007] dccp_write_xmit+0x118/0x1d0 [ 86.931733][ T5007] dccp_sendmsg+0x550/0x8b8 [ 86.932474][ T5007] inet_sendmsg+0x154/0x284 [ 86.933183][ T5007] __sys_sendto+0x30c/0x420 [ 86.933842][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 86.934571][ T5007] invoke_syscall+0x98/0x2b0 [ 86.935378][ T5007] el0_svc_common+0x138/0x258 [ 86.936127][ T5007] do_el0_svc+0x58/0x13c [ 86.936824][ T5007] el0_svc+0x78/0x1d0 [ 86.937488][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 86.938263][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 86.939127][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.940646][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 86.941806][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.943451][ T5007] Call trace: [ 86.943983][ T5007] dump_backtrace+0x0/0x458 [ 86.944706][ T5007] show_stack+0x2c/0x3c [ 86.945302][ T5007] __dump_stack+0x30/0x40 [ 86.945921][ T5007] dump_stack_lvl+0xf4/0x15c [ 86.946565][ T5007] dump_stack+0x1c/0x5c [ 86.947228][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.948108][ T5007] dccp_xmit_packet+0x298/0x448 [ 86.948917][ T5007] dccp_write_xmit+0x118/0x1d0 [ 86.949715][ T5007] dccp_sendmsg+0x550/0x8b8 [ 86.950455][ T5007] inet_sendmsg+0x154/0x284 [ 86.951147][ T5007] __sys_sendto+0x30c/0x420 [ 86.951835][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 86.952635][ T5007] invoke_syscall+0x98/0x2b0 [ 86.953399][ T5007] el0_svc_common+0x138/0x258 [ 86.954161][ T5007] do_el0_svc+0x58/0x13c [ 86.954837][ T5007] el0_svc+0x78/0x1d0 [ 86.955480][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 86.956304][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 86.957757][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.959680][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 86.960923][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.962539][ T5007] Call trace: [ 86.963051][ T5007] dump_backtrace+0x0/0x458 [ 86.963841][ T5007] show_stack+0x2c/0x3c [ 86.964517][ T5007] __dump_stack+0x30/0x40 [ 86.965216][ T5007] dump_stack_lvl+0xf4/0x15c [ 86.966011][ T5007] dump_stack+0x1c/0x5c [ 86.966653][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.967468][ T5007] dccp_xmit_packet+0x298/0x448 [ 86.968255][ T5007] dccp_write_xmit+0x118/0x1d0 [ 86.969045][ T5007] dccp_sendmsg+0x550/0x8b8 [ 86.969781][ T5007] inet_sendmsg+0x154/0x284 [ 86.970527][ T5007] __sys_sendto+0x30c/0x420 [ 86.971235][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 86.972075][ T5007] invoke_syscall+0x98/0x2b0 [ 86.972817][ T5007] el0_svc_common+0x138/0x258 [ 86.973571][ T5007] do_el0_svc+0x58/0x13c [ 86.974271][ T5007] el0_svc+0x78/0x1d0 [ 86.974891][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 86.975683][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 86.976750][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.978518][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 86.979630][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.981294][ T5007] Call trace: [ 86.981847][ T5007] dump_backtrace+0x0/0x458 [ 86.982580][ T5007] show_stack+0x2c/0x3c [ 86.983260][ T5007] __dump_stack+0x30/0x40 [ 86.983955][ T5007] dump_stack_lvl+0xf4/0x15c [ 86.984698][ T5007] dump_stack+0x1c/0x5c [ 86.985421][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 86.986379][ T5007] dccp_xmit_packet+0x298/0x448 [ 86.987178][ T5007] dccp_write_xmit+0x118/0x1d0 [ 86.987944][ T5007] dccp_sendmsg+0x550/0x8b8 [ 86.988684][ T5007] inet_sendmsg+0x154/0x284 [ 86.989395][ T5007] __sys_sendto+0x30c/0x420 [ 86.990052][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 86.990767][ T5007] invoke_syscall+0x98/0x2b0 [ 86.991473][ T5007] el0_svc_common+0x138/0x258 [ 86.992195][ T5007] do_el0_svc+0x58/0x13c [ 86.992847][ T5007] el0_svc+0x78/0x1d0 [ 86.993458][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 86.994244][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 86.995166][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 86.996904][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 86.998036][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.999495][ T5007] Call trace: [ 86.999972][ T5007] dump_backtrace+0x0/0x458 [ 87.000609][ T5007] show_stack+0x2c/0x3c [ 87.001243][ T5007] __dump_stack+0x30/0x40 [ 87.001902][ T5007] dump_stack_lvl+0xf4/0x15c [ 87.002586][ T5007] dump_stack+0x1c/0x5c [ 87.003210][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.004121][ T5007] dccp_xmit_packet+0x298/0x448 [ 87.004921][ T5007] dccp_write_xmit+0x118/0x1d0 [ 87.005675][ T5007] dccp_sendmsg+0x550/0x8b8 [ 87.006381][ T5007] inet_sendmsg+0x154/0x284 [ 87.007117][ T5007] __sys_sendto+0x30c/0x420 [ 87.007800][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 87.008584][ T5007] invoke_syscall+0x98/0x2b0 [ 87.009294][ T5007] el0_svc_common+0x138/0x258 [ 87.010020][ T5007] do_el0_svc+0x58/0x13c [ 87.010693][ T5007] el0_svc+0x78/0x1d0 [ 87.011355][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 87.012162][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 87.013083][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.014824][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 87.015922][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.017485][ T5007] Call trace: [ 87.017992][ T5007] dump_backtrace+0x0/0x458 [ 87.018703][ T5007] show_stack+0x2c/0x3c [ 87.019279][ T5007] __dump_stack+0x30/0x40 [ 87.020034][ T5007] dump_stack_lvl+0xf4/0x15c [ 87.020829][ T5007] dump_stack+0x1c/0x5c [ 87.021513][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.022396][ T5007] dccp_xmit_packet+0x298/0x448 [ 87.023236][ T5007] dccp_write_xmit+0x118/0x1d0 [ 87.024042][ T5007] dccp_sendmsg+0x550/0x8b8 [ 87.024731][ T5007] inet_sendmsg+0x154/0x284 [ 87.025418][ T5007] __sys_sendto+0x30c/0x420 [ 87.026100][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 87.026776][ T5007] invoke_syscall+0x98/0x2b0 [ 87.027436][ T5007] el0_svc_common+0x138/0x258 [ 87.028223][ T5007] do_el0_svc+0x58/0x13c [ 87.028884][ T5007] el0_svc+0x78/0x1d0 [ 87.029579][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 87.030396][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 87.031317][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.033095][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 87.034181][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.035699][ T5007] Call trace: [ 87.036188][ T5007] dump_backtrace+0x0/0x458 [ 87.036874][ T5007] show_stack+0x2c/0x3c [ 87.037550][ T5007] __dump_stack+0x30/0x40 [ 87.038264][ T5007] dump_stack_lvl+0xf4/0x15c [ 87.039060][ T5007] dump_stack+0x1c/0x5c [ 87.039780][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.040655][ T5007] dccp_xmit_packet+0x298/0x448 [ 87.041457][ T5007] dccp_write_xmit+0x118/0x1d0 [ 87.042256][ T5007] dccp_sendmsg+0x550/0x8b8 [ 87.043030][ T5007] inet_sendmsg+0x154/0x284 [ 87.043765][ T5007] __sys_sendto+0x30c/0x420 [ 87.044488][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 87.045236][ T5007] invoke_syscall+0x98/0x2b0 [ 87.045975][ T5007] el0_svc_common+0x138/0x258 [ 87.046725][ T5007] do_el0_svc+0x58/0x13c [ 87.047415][ T5007] el0_svc+0x78/0x1d0 [ 87.048077][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 87.048883][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 87.049775][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.051464][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 87.052599][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.054141][ T5007] Call trace: [ 87.054650][ T5007] dump_backtrace+0x0/0x458 [ 87.055395][ T5007] show_stack+0x2c/0x3c [ 87.056070][ T5007] __dump_stack+0x30/0x40 [ 87.056749][ T5007] dump_stack_lvl+0xf4/0x15c [ 87.057485][ T5007] dump_stack+0x1c/0x5c [ 87.058158][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.059011][ T5007] dccp_xmit_packet+0x298/0x448 [ 87.059791][ T5007] dccp_write_xmit+0x118/0x1d0 [ 87.060515][ T5007] dccp_sendmsg+0x550/0x8b8 [ 87.061200][ T5007] inet_sendmsg+0x154/0x284 [ 87.061852][ T5007] __sys_sendto+0x30c/0x420 [ 87.062502][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 87.063230][ T5007] invoke_syscall+0x98/0x2b0 [ 87.063998][ T5007] el0_svc_common+0x138/0x258 [ 87.064783][ T5007] do_el0_svc+0x58/0x13c [ 87.065458][ T5007] el0_svc+0x78/0x1d0 [ 87.066103][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 87.066898][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 87.068286][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.070004][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 87.071149][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.072694][ T5007] Call trace: [ 87.073223][ T5007] dump_backtrace+0x0/0x458 [ 87.073932][ T5007] show_stack+0x2c/0x3c [ 87.074620][ T5007] __dump_stack+0x30/0x40 [ 87.075306][ T5007] dump_stack_lvl+0xf4/0x15c [ 87.075978][ T5007] dump_stack+0x1c/0x5c [ 87.076554][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.077357][ T5007] dccp_xmit_packet+0x298/0x448 [ 87.078107][ T5007] dccp_write_xmit+0x118/0x1d0 [ 87.078838][ T5007] dccp_sendmsg+0x550/0x8b8 [ 87.079518][ T5007] inet_sendmsg+0x154/0x284 [ 87.080278][ T5007] __sys_sendto+0x30c/0x420 [ 87.080955][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 87.081665][ T5007] invoke_syscall+0x98/0x2b0 [ 87.082367][ T5007] el0_svc_common+0x138/0x258 [ 87.083049][ T5007] do_el0_svc+0x58/0x13c [ 87.083664][ T5007] el0_svc+0x78/0x1d0 [ 87.084260][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 87.085001][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 87.086057][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.087786][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 87.089222][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.090753][ T5007] Call trace: [ 87.091260][ T5007] dump_backtrace+0x0/0x458 [ 87.091951][ T5007] show_stack+0x2c/0x3c [ 87.092594][ T5007] __dump_stack+0x30/0x40 [ 87.093327][ T5007] dump_stack_lvl+0xf4/0x15c [ 87.094123][ T5007] dump_stack+0x1c/0x5c [ 87.094801][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.095701][ T5007] dccp_xmit_packet+0x298/0x448 [ 87.096512][ T5007] dccp_write_xmit+0x118/0x1d0 [ 87.097339][ T5007] dccp_sendmsg+0x550/0x8b8 [ 87.098040][ T5007] inet_sendmsg+0x154/0x284 [ 87.098804][ T5007] __sys_sendto+0x30c/0x420 [ 87.099512][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 87.100333][ T5007] invoke_syscall+0x98/0x2b0 [ 87.101100][ T5007] el0_svc_common+0x138/0x258 [ 87.101834][ T5007] do_el0_svc+0x58/0x13c [ 87.102539][ T5007] el0_svc+0x78/0x1d0 [ 87.103182][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 87.103964][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 87.104846][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.106569][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 87.107835][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.109508][ T5007] Call trace: [ 87.109999][ T5007] dump_backtrace+0x0/0x458 [ 87.110706][ T5007] show_stack+0x2c/0x3c [ 87.111406][ T5007] __dump_stack+0x30/0x40 [ 87.112084][ T5007] dump_stack_lvl+0xf4/0x15c [ 87.112826][ T5007] dump_stack+0x1c/0x5c [ 87.113525][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.114424][ T5007] dccp_xmit_packet+0x298/0x448 [ 87.115245][ T5007] dccp_write_xmit+0x118/0x1d0 [ 87.116053][ T5007] dccp_sendmsg+0x550/0x8b8 [ 87.116726][ T5007] inet_sendmsg+0x154/0x284 [ 87.117457][ T5007] __sys_sendto+0x30c/0x420 [ 87.118143][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 87.118881][ T5007] invoke_syscall+0x98/0x2b0 [ 87.119556][ T5007] el0_svc_common+0x138/0x258 [ 87.120365][ T5007] do_el0_svc+0x58/0x13c [ 87.121057][ T5007] el0_svc+0x78/0x1d0 [ 87.121700][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 87.122509][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 87.123447][ T5007] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.125189][ T5007] CPU: 0 PID: 5007 Comm: syz.0.49 Not tainted syzkaller #0 [ 87.126346][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.128070][ T5007] Call trace: [ 87.128598][ T5007] dump_backtrace+0x0/0x458 [ 87.129329][ T5007] show_stack+0x2c/0x3c [ 87.130011][ T5007] __dump_stack+0x30/0x40 [ 87.130757][ T5007] dump_stack_lvl+0xf4/0x15c [ 87.131501][ T5007] dump_stack+0x1c/0x5c [ 87.132227][ T5007] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.133167][ T5007] dccp_xmit_packet+0x298/0x448 [ 87.133919][ T5007] dccp_write_xmit+0x118/0x1d0 [ 87.134721][ T5007] dccp_sendmsg+0x550/0x8b8 [ 87.135472][ T5007] inet_sendmsg+0x154/0x284 [ 87.136207][ T5007] __sys_sendto+0x30c/0x420 [ 87.136895][ T5007] __arm64_sys_sendto+0xd8/0xf8 [ 87.137719][ T5007] invoke_syscall+0x98/0x2b0 [ 87.138481][ T5007] el0_svc_common+0x138/0x258 [ 87.139283][ T5007] do_el0_svc+0x58/0x13c [ 87.139976][ T5007] el0_svc+0x78/0x1d0 [ 87.140621][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 87.141443][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 87.159809][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.161850][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.163015][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.164498][ T5009] Call trace: [ 87.164981][ T5009] dump_backtrace+0x0/0x458 [ 87.165772][ T5009] show_stack+0x2c/0x3c [ 87.166470][ T5009] __dump_stack+0x30/0x40 [ 87.167146][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.167846][ T5009] dump_stack+0x1c/0x5c [ 87.168485][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.169342][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.170106][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.170856][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.171555][ T5009] inet_sendmsg+0x154/0x284 [ 87.172258][ T5009] __sys_sendto+0x30c/0x420 [ 87.173044][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.173854][ T5009] invoke_syscall+0x98/0x2b0 [ 87.174587][ T5009] el0_svc_common+0x138/0x258 [ 87.175407][ T5009] do_el0_svc+0x58/0x13c [ 87.176083][ T5009] el0_svc+0x78/0x1d0 [ 87.176723][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.177561][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.178985][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.180640][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.181753][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.183406][ T5009] Call trace: [ 87.183948][ T5009] dump_backtrace+0x0/0x458 [ 87.184725][ T5009] show_stack+0x2c/0x3c [ 87.185410][ T5009] __dump_stack+0x30/0x40 [ 87.186100][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.186821][ T5009] dump_stack+0x1c/0x5c [ 87.187472][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.188321][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.189128][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.189917][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.190663][ T5009] inet_sendmsg+0x154/0x284 [ 87.191405][ T5009] __sys_sendto+0x30c/0x420 [ 87.192143][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.192920][ T5009] invoke_syscall+0x98/0x2b0 [ 87.193676][ T5009] el0_svc_common+0x138/0x258 [ 87.194391][ T5009] do_el0_svc+0x58/0x13c [ 87.195034][ T5009] el0_svc+0x78/0x1d0 [ 87.195634][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.196349][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.197672][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.199375][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.200467][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.201985][ T5009] Call trace: [ 87.202499][ T5009] dump_backtrace+0x0/0x458 [ 87.203257][ T5009] show_stack+0x2c/0x3c [ 87.203955][ T5009] __dump_stack+0x30/0x40 [ 87.204671][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.205450][ T5009] dump_stack+0x1c/0x5c [ 87.206141][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.207028][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.207815][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.208561][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.209284][ T5009] inet_sendmsg+0x154/0x284 [ 87.210079][ T5009] __sys_sendto+0x30c/0x420 [ 87.210796][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.211583][ T5009] invoke_syscall+0x98/0x2b0 [ 87.212353][ T5009] el0_svc_common+0x138/0x258 [ 87.213160][ T5009] do_el0_svc+0x58/0x13c [ 87.213827][ T5009] el0_svc+0x78/0x1d0 [ 87.214447][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.215273][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.216305][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.218041][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.219151][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.220737][ T5009] Call trace: [ 87.221234][ T5009] dump_backtrace+0x0/0x458 [ 87.221920][ T5009] show_stack+0x2c/0x3c [ 87.222609][ T5009] __dump_stack+0x30/0x40 [ 87.223323][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.224066][ T5009] dump_stack+0x1c/0x5c [ 87.224700][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.225487][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.226189][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.226921][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.227599][ T5009] inet_sendmsg+0x154/0x284 [ 87.228287][ T5009] __sys_sendto+0x30c/0x420 [ 87.228929][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.229619][ T5009] invoke_syscall+0x98/0x2b0 [ 87.230347][ T5009] el0_svc_common+0x138/0x258 [ 87.231107][ T5009] do_el0_svc+0x58/0x13c [ 87.231799][ T5009] el0_svc+0x78/0x1d0 [ 87.232482][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.233332][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.234779][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.236457][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.237613][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.239149][ T5009] Call trace: [ 87.239662][ T5009] dump_backtrace+0x0/0x458 [ 87.240379][ T5009] show_stack+0x2c/0x3c [ 87.241016][ T5009] __dump_stack+0x30/0x40 [ 87.241734][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.242507][ T5009] dump_stack+0x1c/0x5c [ 87.243180][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.244064][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.244851][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.245603][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.246315][ T5009] inet_sendmsg+0x154/0x284 [ 87.247031][ T5009] __sys_sendto+0x30c/0x420 [ 87.247752][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.248552][ T5009] invoke_syscall+0x98/0x2b0 [ 87.249311][ T5009] el0_svc_common+0x138/0x258 [ 87.250051][ T5009] do_el0_svc+0x58/0x13c [ 87.250787][ T5009] el0_svc+0x78/0x1d0 [ 87.251445][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.252234][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.253091][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.254796][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.255938][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.257594][ T5009] Call trace: [ 87.258103][ T5009] dump_backtrace+0x0/0x458 [ 87.258818][ T5009] show_stack+0x2c/0x3c [ 87.259483][ T5009] __dump_stack+0x30/0x40 [ 87.260130][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.260829][ T5009] dump_stack+0x1c/0x5c [ 87.261519][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.262452][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.263224][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.263946][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.264644][ T5009] inet_sendmsg+0x154/0x284 [ 87.265414][ T5009] __sys_sendto+0x30c/0x420 [ 87.266156][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.266955][ T5009] invoke_syscall+0x98/0x2b0 [ 87.267694][ T5009] el0_svc_common+0x138/0x258 [ 87.268459][ T5009] do_el0_svc+0x58/0x13c [ 87.269130][ T5009] el0_svc+0x78/0x1d0 [ 87.269765][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.270549][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.271536][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.273336][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.274498][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.276003][ T5009] Call trace: [ 87.276490][ T5009] dump_backtrace+0x0/0x458 [ 87.277194][ T5009] show_stack+0x2c/0x3c [ 87.277837][ T5009] __dump_stack+0x30/0x40 [ 87.278615][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.279330][ T5009] dump_stack+0x1c/0x5c [ 87.279965][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.280763][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.281471][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.282172][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.282829][ T5009] inet_sendmsg+0x154/0x284 [ 87.283663][ T5009] __sys_sendto+0x30c/0x420 [ 87.284411][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.285218][ T5009] invoke_syscall+0x98/0x2b0 [ 87.285996][ T5009] el0_svc_common+0x138/0x258 [ 87.286809][ T5009] do_el0_svc+0x58/0x13c [ 87.287579][ T5009] el0_svc+0x78/0x1d0 [ 87.288148][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.288920][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.290102][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.291922][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.292955][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.294398][ T5009] Call trace: [ 87.294902][ T5009] dump_backtrace+0x0/0x458 [ 87.295580][ T5009] show_stack+0x2c/0x3c [ 87.296235][ T5009] __dump_stack+0x30/0x40 [ 87.296961][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.297606][ T5009] dump_stack+0x1c/0x5c [ 87.298258][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.299091][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.299864][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.300665][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.301362][ T5009] inet_sendmsg+0x154/0x284 [ 87.302043][ T5009] __sys_sendto+0x30c/0x420 [ 87.302767][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.303458][ T5009] invoke_syscall+0x98/0x2b0 [ 87.304107][ T5009] el0_svc_common+0x138/0x258 [ 87.304814][ T5009] do_el0_svc+0x58/0x13c [ 87.305472][ T5009] el0_svc+0x78/0x1d0 [ 87.306075][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.306914][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.307864][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.309671][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.310835][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.312503][ T5009] Call trace: [ 87.313055][ T5009] dump_backtrace+0x0/0x458 [ 87.313810][ T5009] show_stack+0x2c/0x3c [ 87.314525][ T5009] __dump_stack+0x30/0x40 [ 87.315233][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.316021][ T5009] dump_stack+0x1c/0x5c [ 87.316745][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.317697][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.318465][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.319197][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.319891][ T5009] inet_sendmsg+0x154/0x284 [ 87.320613][ T5009] __sys_sendto+0x30c/0x420 [ 87.321386][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.322128][ T5009] invoke_syscall+0x98/0x2b0 [ 87.322885][ T5009] el0_svc_common+0x138/0x258 [ 87.323622][ T5009] do_el0_svc+0x58/0x13c [ 87.324234][ T5009] el0_svc+0x78/0x1d0 [ 87.324859][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.325599][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.326562][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.328262][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.329300][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.330651][ T5009] Call trace: [ 87.331112][ T5009] dump_backtrace+0x0/0x458 [ 87.331848][ T5009] show_stack+0x2c/0x3c [ 87.332544][ T5009] __dump_stack+0x30/0x40 [ 87.333219][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.333866][ T5009] dump_stack+0x1c/0x5c [ 87.334483][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.335274][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.336011][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.336761][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.337391][ T5009] inet_sendmsg+0x154/0x284 [ 87.338090][ T5009] __sys_sendto+0x30c/0x420 [ 87.338787][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.339553][ T5009] invoke_syscall+0x98/0x2b0 [ 87.340258][ T5009] el0_svc_common+0x138/0x258 [ 87.340940][ T5009] do_el0_svc+0x58/0x13c [ 87.341566][ T5009] el0_svc+0x78/0x1d0 [ 87.342183][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.342979][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.344180][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.345872][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.347079][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.348611][ T5009] Call trace: [ 87.349120][ T5009] dump_backtrace+0x0/0x458 [ 87.349880][ T5009] show_stack+0x2c/0x3c [ 87.350575][ T5009] __dump_stack+0x30/0x40 [ 87.351276][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.352001][ T5009] dump_stack+0x1c/0x5c [ 87.352683][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.353534][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.354271][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.355067][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.355854][ T5009] inet_sendmsg+0x154/0x284 [ 87.356594][ T5009] __sys_sendto+0x30c/0x420 [ 87.357384][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.358176][ T5009] invoke_syscall+0x98/0x2b0 [ 87.358814][ T5009] el0_svc_common+0x138/0x258 [ 87.359538][ T5009] do_el0_svc+0x58/0x13c [ 87.360194][ T5009] el0_svc+0x78/0x1d0 [ 87.360803][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.361561][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.362410][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.363948][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.365054][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.366621][ T5009] Call trace: [ 87.367111][ T5009] dump_backtrace+0x0/0x458 [ 87.367822][ T5009] show_stack+0x2c/0x3c [ 87.368499][ T5009] __dump_stack+0x30/0x40 [ 87.369111][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.369805][ T5009] dump_stack+0x1c/0x5c [ 87.370457][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.371209][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.371903][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.372583][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.373270][ T5009] inet_sendmsg+0x154/0x284 [ 87.373905][ T5009] __sys_sendto+0x30c/0x420 [ 87.374551][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.375365][ T5009] invoke_syscall+0x98/0x2b0 [ 87.376083][ T5009] el0_svc_common+0x138/0x258 [ 87.376826][ T5009] do_el0_svc+0x58/0x13c [ 87.377531][ T5009] el0_svc+0x78/0x1d0 [ 87.378195][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.378963][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.379953][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.381609][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.382819][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.384481][ T5009] Call trace: [ 87.384995][ T5009] dump_backtrace+0x0/0x458 [ 87.385730][ T5009] show_stack+0x2c/0x3c [ 87.386415][ T5009] __dump_stack+0x30/0x40 [ 87.387155][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.387894][ T5009] dump_stack+0x1c/0x5c [ 87.388631][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.389560][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.390366][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.391101][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.391836][ T5009] inet_sendmsg+0x154/0x284 [ 87.392581][ T5009] __sys_sendto+0x30c/0x420 [ 87.393371][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.394109][ T5009] invoke_syscall+0x98/0x2b0 [ 87.394810][ T5009] el0_svc_common+0x138/0x258 [ 87.395500][ T5009] do_el0_svc+0x58/0x13c [ 87.396168][ T5009] el0_svc+0x78/0x1d0 [ 87.396841][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.397602][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.399496][ T5009] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.401203][ T5009] CPU: 0 PID: 5009 Comm: syz.0.50 Not tainted syzkaller #0 [ 87.402294][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.403907][ T5009] Call trace: [ 87.404408][ T5009] dump_backtrace+0x0/0x458 [ 87.405133][ T5009] show_stack+0x2c/0x3c [ 87.405835][ T5009] __dump_stack+0x30/0x40 [ 87.406521][ T5009] dump_stack_lvl+0xf4/0x15c [ 87.407199][ T5009] dump_stack+0x1c/0x5c [ 87.407879][ T5009] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.408804][ T5009] dccp_xmit_packet+0x298/0x448 [ 87.409659][ T5009] dccp_write_xmit+0x118/0x1d0 [ 87.410367][ T5009] dccp_sendmsg+0x550/0x8b8 [ 87.411044][ T5009] inet_sendmsg+0x154/0x284 [ 87.411746][ T5009] __sys_sendto+0x30c/0x420 [ 87.412465][ T5009] __arm64_sys_sendto+0xd8/0xf8 [ 87.413225][ T5009] invoke_syscall+0x98/0x2b0 [ 87.413959][ T5009] el0_svc_common+0x138/0x258 [ 87.414694][ T5009] do_el0_svc+0x58/0x13c [ 87.415420][ T5009] el0_svc+0x78/0x1d0 [ 87.416072][ T5009] el0t_64_sync_handler+0xcc/0xe4 [ 87.416873][ T5009] el0t_64_sync+0x1a0/0x1a4 [ 87.434193][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.436107][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.437104][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.438546][ T5011] Call trace: [ 87.439095][ T5011] dump_backtrace+0x0/0x458 [ 87.439905][ T5011] show_stack+0x2c/0x3c [ 87.440595][ T5011] __dump_stack+0x30/0x40 [ 87.441283][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.442030][ T5011] dump_stack+0x1c/0x5c [ 87.442690][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.443564][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.444328][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.445091][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.445822][ T5011] inet_sendmsg+0x154/0x284 [ 87.446545][ T5011] __sys_sendto+0x30c/0x420 [ 87.447287][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.448058][ T5011] invoke_syscall+0x98/0x2b0 [ 87.448840][ T5011] el0_svc_common+0x138/0x258 [ 87.449594][ T5011] do_el0_svc+0x58/0x13c [ 87.450255][ T5011] el0_svc+0x78/0x1d0 [ 87.450873][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.451682][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.452590][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.454188][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.455296][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.456833][ T5011] Call trace: [ 87.457366][ T5011] dump_backtrace+0x0/0x458 [ 87.458060][ T5011] show_stack+0x2c/0x3c [ 87.458707][ T5011] __dump_stack+0x30/0x40 [ 87.459400][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.460100][ T5011] dump_stack+0x1c/0x5c [ 87.460732][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.461550][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.462337][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.463116][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.463817][ T5011] inet_sendmsg+0x154/0x284 [ 87.464545][ T5011] __sys_sendto+0x30c/0x420 [ 87.465276][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.466050][ T5011] invoke_syscall+0x98/0x2b0 [ 87.466865][ T5011] el0_svc_common+0x138/0x258 [ 87.467623][ T5011] do_el0_svc+0x58/0x13c [ 87.468303][ T5011] el0_svc+0x78/0x1d0 [ 87.468924][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.469677][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.470760][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.472747][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.473954][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.475578][ T5011] Call trace: [ 87.476101][ T5011] dump_backtrace+0x0/0x458 [ 87.476817][ T5011] show_stack+0x2c/0x3c [ 87.477424][ T5011] __dump_stack+0x30/0x40 [ 87.478052][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.478688][ T5011] dump_stack+0x1c/0x5c [ 87.479283][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.480024][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.480694][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.481390][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.482098][ T5011] inet_sendmsg+0x154/0x284 [ 87.482818][ T5011] __sys_sendto+0x30c/0x420 [ 87.483568][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.484346][ T5011] invoke_syscall+0x98/0x2b0 [ 87.485162][ T5011] el0_svc_common+0x138/0x258 [ 87.485887][ T5011] do_el0_svc+0x58/0x13c [ 87.486546][ T5011] el0_svc+0x78/0x1d0 [ 87.487157][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.487973][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.488900][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.490515][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.491620][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.493218][ T5011] Call trace: [ 87.493739][ T5011] dump_backtrace+0x0/0x458 [ 87.494472][ T5011] show_stack+0x2c/0x3c [ 87.495116][ T5011] __dump_stack+0x30/0x40 [ 87.495724][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.496520][ T5011] dump_stack+0x1c/0x5c [ 87.497238][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.498101][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.498892][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.499665][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.500364][ T5011] inet_sendmsg+0x154/0x284 [ 87.501095][ T5011] __sys_sendto+0x30c/0x420 [ 87.501752][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.502592][ T5011] invoke_syscall+0x98/0x2b0 [ 87.503320][ T5011] el0_svc_common+0x138/0x258 [ 87.504113][ T5011] do_el0_svc+0x58/0x13c [ 87.504790][ T5011] el0_svc+0x78/0x1d0 [ 87.505425][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.506162][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.507653][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.509294][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.510426][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.512088][ T5011] Call trace: [ 87.512591][ T5011] dump_backtrace+0x0/0x458 [ 87.513333][ T5011] show_stack+0x2c/0x3c [ 87.514008][ T5011] __dump_stack+0x30/0x40 [ 87.514675][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.515451][ T5011] dump_stack+0x1c/0x5c [ 87.516128][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.516937][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.517695][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.518455][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.519137][ T5011] inet_sendmsg+0x154/0x284 [ 87.519912][ T5011] __sys_sendto+0x30c/0x420 [ 87.520660][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.521406][ T5011] invoke_syscall+0x98/0x2b0 [ 87.522132][ T5011] el0_svc_common+0x138/0x258 [ 87.522915][ T5011] do_el0_svc+0x58/0x13c [ 87.523538][ T5011] el0_svc+0x78/0x1d0 [ 87.524282][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.525104][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.526024][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.527681][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.528866][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.530505][ T5011] Call trace: [ 87.531001][ T5011] dump_backtrace+0x0/0x458 [ 87.531676][ T5011] show_stack+0x2c/0x3c [ 87.532321][ T5011] __dump_stack+0x30/0x40 [ 87.533031][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.533744][ T5011] dump_stack+0x1c/0x5c [ 87.534395][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.535335][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.536129][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.536927][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.537649][ T5011] inet_sendmsg+0x154/0x284 [ 87.538352][ T5011] __sys_sendto+0x30c/0x420 [ 87.539045][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.539822][ T5011] invoke_syscall+0x98/0x2b0 [ 87.540526][ T5011] el0_svc_common+0x138/0x258 [ 87.541250][ T5011] do_el0_svc+0x58/0x13c [ 87.541881][ T5011] el0_svc+0x78/0x1d0 [ 87.542562][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.543406][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.544410][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.546134][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.547269][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.548843][ T5011] Call trace: [ 87.549361][ T5011] dump_backtrace+0x0/0x458 [ 87.550006][ T5011] show_stack+0x2c/0x3c [ 87.550636][ T5011] __dump_stack+0x30/0x40 [ 87.551339][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.552080][ T5011] dump_stack+0x1c/0x5c [ 87.552763][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.553549][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.554273][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.555007][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.555704][ T5011] inet_sendmsg+0x154/0x284 [ 87.556439][ T5011] __sys_sendto+0x30c/0x420 [ 87.557143][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.557897][ T5011] invoke_syscall+0x98/0x2b0 [ 87.558614][ T5011] el0_svc_common+0x138/0x258 [ 87.559395][ T5011] do_el0_svc+0x58/0x13c [ 87.560084][ T5011] el0_svc+0x78/0x1d0 [ 87.560714][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.561546][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.562438][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.564084][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.565187][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.566663][ T5011] Call trace: [ 87.567129][ T5011] dump_backtrace+0x0/0x458 [ 87.567881][ T5011] show_stack+0x2c/0x3c [ 87.568537][ T5011] __dump_stack+0x30/0x40 [ 87.569215][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.569917][ T5011] dump_stack+0x1c/0x5c [ 87.570561][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.571410][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.572168][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.572939][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.573666][ T5011] inet_sendmsg+0x154/0x284 [ 87.574381][ T5011] __sys_sendto+0x30c/0x420 [ 87.575099][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.575875][ T5011] invoke_syscall+0x98/0x2b0 [ 87.576642][ T5011] el0_svc_common+0x138/0x258 [ 87.577361][ T5011] do_el0_svc+0x58/0x13c [ 87.578066][ T5011] el0_svc+0x78/0x1d0 [ 87.578702][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.579488][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.580480][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.582159][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.583355][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.584920][ T5011] Call trace: [ 87.585430][ T5011] dump_backtrace+0x0/0x458 [ 87.586143][ T5011] show_stack+0x2c/0x3c [ 87.586827][ T5011] __dump_stack+0x30/0x40 [ 87.587543][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.588244][ T5011] dump_stack+0x1c/0x5c [ 87.588841][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.589592][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.590294][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.590987][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.591619][ T5011] inet_sendmsg+0x154/0x284 [ 87.592345][ T5011] __sys_sendto+0x30c/0x420 [ 87.593096][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.593869][ T5011] invoke_syscall+0x98/0x2b0 [ 87.594549][ T5011] el0_svc_common+0x138/0x258 [ 87.595251][ T5011] do_el0_svc+0x58/0x13c [ 87.595949][ T5011] el0_svc+0x78/0x1d0 [ 87.596607][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.597435][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.598284][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.599886][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.600948][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.602533][ T5011] Call trace: [ 87.603042][ T5011] dump_backtrace+0x0/0x458 [ 87.603722][ T5011] show_stack+0x2c/0x3c [ 87.604350][ T5011] __dump_stack+0x30/0x40 [ 87.604988][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.605776][ T5011] dump_stack+0x1c/0x5c [ 87.606467][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.607369][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.608142][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.609006][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.609723][ T5011] inet_sendmsg+0x154/0x284 [ 87.610543][ T5011] __sys_sendto+0x30c/0x420 [ 87.611337][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.612157][ T5011] invoke_syscall+0x98/0x2b0 [ 87.612908][ T5011] el0_svc_common+0x138/0x258 [ 87.613646][ T5011] do_el0_svc+0x58/0x13c [ 87.614358][ T5011] el0_svc+0x78/0x1d0 [ 87.614999][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.615768][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.617189][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.618926][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.620052][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.621644][ T5011] Call trace: [ 87.622187][ T5011] dump_backtrace+0x0/0x458 [ 87.622963][ T5011] show_stack+0x2c/0x3c [ 87.623678][ T5011] __dump_stack+0x30/0x40 [ 87.624372][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.625128][ T5011] dump_stack+0x1c/0x5c [ 87.625763][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.626664][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.627426][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.628121][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.628767][ T5011] inet_sendmsg+0x154/0x284 [ 87.629454][ T5011] __sys_sendto+0x30c/0x420 [ 87.630198][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.630967][ T5011] invoke_syscall+0x98/0x2b0 [ 87.631712][ T5011] el0_svc_common+0x138/0x258 [ 87.632502][ T5011] do_el0_svc+0x58/0x13c [ 87.633203][ T5011] el0_svc+0x78/0x1d0 [ 87.633893][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.634695][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.635667][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.637430][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.638525][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.640014][ T5011] Call trace: [ 87.640517][ T5011] dump_backtrace+0x0/0x458 [ 87.641272][ T5011] show_stack+0x2c/0x3c [ 87.641934][ T5011] __dump_stack+0x30/0x40 [ 87.642649][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.643361][ T5011] dump_stack+0x1c/0x5c [ 87.644029][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.644887][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.645628][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.646410][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.647106][ T5011] inet_sendmsg+0x154/0x284 [ 87.647803][ T5011] __sys_sendto+0x30c/0x420 [ 87.648547][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.649332][ T5011] invoke_syscall+0x98/0x2b0 [ 87.650064][ T5011] el0_svc_common+0x138/0x258 [ 87.650833][ T5011] do_el0_svc+0x58/0x13c [ 87.651483][ T5011] el0_svc+0x78/0x1d0 [ 87.652092][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.652889][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.653736][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.655393][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.656532][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.658108][ T5011] Call trace: [ 87.658627][ T5011] dump_backtrace+0x0/0x458 [ 87.659347][ T5011] show_stack+0x2c/0x3c [ 87.659989][ T5011] __dump_stack+0x30/0x40 [ 87.660707][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.661449][ T5011] dump_stack+0x1c/0x5c [ 87.662142][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.663078][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.663918][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.664653][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.665371][ T5011] inet_sendmsg+0x154/0x284 [ 87.666088][ T5011] __sys_sendto+0x30c/0x420 [ 87.666806][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.667529][ T5011] invoke_syscall+0x98/0x2b0 [ 87.668308][ T5011] el0_svc_common+0x138/0x258 [ 87.669070][ T5011] do_el0_svc+0x58/0x13c [ 87.669797][ T5011] el0_svc+0x78/0x1d0 [ 87.670444][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.671282][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.672200][ T5011] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.673773][ T5011] CPU: 0 PID: 5011 Comm: syz.0.51 Not tainted syzkaller #0 [ 87.674809][ T5011] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.676284][ T5011] Call trace: [ 87.676779][ T5011] dump_backtrace+0x0/0x458 [ 87.677473][ T5011] show_stack+0x2c/0x3c [ 87.678108][ T5011] __dump_stack+0x30/0x40 [ 87.678783][ T5011] dump_stack_lvl+0xf4/0x15c [ 87.679479][ T5011] dump_stack+0x1c/0x5c [ 87.680121][ T5011] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.680957][ T5011] dccp_xmit_packet+0x298/0x448 [ 87.681705][ T5011] dccp_write_xmit+0x118/0x1d0 [ 87.682453][ T5011] dccp_sendmsg+0x550/0x8b8 [ 87.683152][ T5011] inet_sendmsg+0x154/0x284 [ 87.683858][ T5011] __sys_sendto+0x30c/0x420 [ 87.684555][ T5011] __arm64_sys_sendto+0xd8/0xf8 [ 87.685295][ T5011] invoke_syscall+0x98/0x2b0 [ 87.685999][ T5011] el0_svc_common+0x138/0x258 [ 87.686709][ T5011] do_el0_svc+0x58/0x13c [ 87.687376][ T5011] el0_svc+0x78/0x1d0 [ 87.687980][ T5011] el0t_64_sync_handler+0xcc/0xe4 [ 87.688717][ T5011] el0t_64_sync+0x1a0/0x1a4 [ 87.706535][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.708378][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.709492][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.711105][ T5013] Call trace: [ 87.711599][ T5013] dump_backtrace+0x0/0x458 [ 87.712288][ T5013] show_stack+0x2c/0x3c [ 87.712949][ T5013] __dump_stack+0x30/0x40 [ 87.713626][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.714336][ T5013] dump_stack+0x1c/0x5c [ 87.714979][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.715835][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.716589][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.717335][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.718076][ T5013] inet_sendmsg+0x154/0x284 [ 87.718809][ T5013] __sys_sendto+0x30c/0x420 [ 87.719561][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.720384][ T5013] invoke_syscall+0x98/0x2b0 [ 87.721118][ T5013] el0_svc_common+0x138/0x258 [ 87.721849][ T5013] do_el0_svc+0x58/0x13c [ 87.722524][ T5013] el0_svc+0x78/0x1d0 [ 87.723150][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.723885][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.724819][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.726398][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.727457][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.728921][ T5013] Call trace: [ 87.729467][ T5013] dump_backtrace+0x0/0x458 [ 87.730215][ T5013] show_stack+0x2c/0x3c [ 87.730913][ T5013] __dump_stack+0x30/0x40 [ 87.731622][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.732373][ T5013] dump_stack+0x1c/0x5c [ 87.733050][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.733967][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.734762][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.735534][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.736249][ T5013] inet_sendmsg+0x154/0x284 [ 87.736949][ T5013] __sys_sendto+0x30c/0x420 [ 87.737642][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.738383][ T5013] invoke_syscall+0x98/0x2b0 [ 87.739088][ T5013] el0_svc_common+0x138/0x258 [ 87.739834][ T5013] do_el0_svc+0x58/0x13c [ 87.740528][ T5013] el0_svc+0x78/0x1d0 [ 87.741189][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.741937][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.743032][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.744731][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.745795][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.747293][ T5013] Call trace: [ 87.747766][ T5013] dump_backtrace+0x0/0x458 [ 87.748511][ T5013] show_stack+0x2c/0x3c [ 87.749138][ T5013] __dump_stack+0x30/0x40 [ 87.749790][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.750543][ T5013] dump_stack+0x1c/0x5c [ 87.751247][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.752173][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.752946][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.753722][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.754391][ T5013] inet_sendmsg+0x154/0x284 [ 87.755021][ T5013] __sys_sendto+0x30c/0x420 [ 87.755673][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.756490][ T5013] invoke_syscall+0x98/0x2b0 [ 87.757222][ T5013] el0_svc_common+0x138/0x258 [ 87.757953][ T5013] do_el0_svc+0x58/0x13c [ 87.758623][ T5013] el0_svc+0x78/0x1d0 [ 87.759265][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.760118][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.761032][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.763338][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.764505][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.766057][ T5013] Call trace: [ 87.766568][ T5013] dump_backtrace+0x0/0x458 [ 87.767272][ T5013] show_stack+0x2c/0x3c [ 87.767915][ T5013] __dump_stack+0x30/0x40 [ 87.768591][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.769288][ T5013] dump_stack+0x1c/0x5c [ 87.770044][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.770906][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.771705][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.772473][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.773176][ T5013] inet_sendmsg+0x154/0x284 [ 87.773884][ T5013] __sys_sendto+0x30c/0x420 [ 87.774626][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.775416][ T5013] invoke_syscall+0x98/0x2b0 [ 87.776166][ T5013] el0_svc_common+0x138/0x258 [ 87.776879][ T5013] do_el0_svc+0x58/0x13c [ 87.777601][ T5013] el0_svc+0x78/0x1d0 [ 87.778271][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.779136][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.780201][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.782034][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.783169][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.784819][ T5013] Call trace: [ 87.785347][ T5013] dump_backtrace+0x0/0x458 [ 87.786102][ T5013] show_stack+0x2c/0x3c [ 87.786781][ T5013] __dump_stack+0x30/0x40 [ 87.787468][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.788217][ T5013] dump_stack+0x1c/0x5c [ 87.788858][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.789769][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.790558][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.791313][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.792016][ T5013] inet_sendmsg+0x154/0x284 [ 87.792750][ T5013] __sys_sendto+0x30c/0x420 [ 87.793498][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.794241][ T5013] invoke_syscall+0x98/0x2b0 [ 87.794943][ T5013] el0_svc_common+0x138/0x258 [ 87.795658][ T5013] do_el0_svc+0x58/0x13c [ 87.796311][ T5013] el0_svc+0x78/0x1d0 [ 87.796909][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.797664][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.798598][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.800173][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.801216][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.802670][ T5013] Call trace: [ 87.803175][ T5013] dump_backtrace+0x0/0x458 [ 87.803917][ T5013] show_stack+0x2c/0x3c [ 87.804637][ T5013] __dump_stack+0x30/0x40 [ 87.805387][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.806181][ T5013] dump_stack+0x1c/0x5c [ 87.806861][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.807772][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.808592][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.809315][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.810026][ T5013] inet_sendmsg+0x154/0x284 [ 87.810707][ T5013] __sys_sendto+0x30c/0x420 [ 87.811392][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.812080][ T5013] invoke_syscall+0x98/0x2b0 [ 87.812807][ T5013] el0_svc_common+0x138/0x258 [ 87.813547][ T5013] do_el0_svc+0x58/0x13c [ 87.814178][ T5013] el0_svc+0x78/0x1d0 [ 87.814867][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.815580][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.816464][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.818135][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.819206][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.820754][ T5013] Call trace: [ 87.821241][ T5013] dump_backtrace+0x0/0x458 [ 87.821920][ T5013] show_stack+0x2c/0x3c [ 87.822568][ T5013] __dump_stack+0x30/0x40 [ 87.823248][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.823968][ T5013] dump_stack+0x1c/0x5c [ 87.824622][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.825506][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.826251][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.826999][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.827715][ T5013] inet_sendmsg+0x154/0x284 [ 87.828433][ T5013] __sys_sendto+0x30c/0x420 [ 87.829133][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.829886][ T5013] invoke_syscall+0x98/0x2b0 [ 87.830596][ T5013] el0_svc_common+0x138/0x258 [ 87.831322][ T5013] do_el0_svc+0x58/0x13c [ 87.831968][ T5013] el0_svc+0x78/0x1d0 [ 87.832569][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.833333][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.834167][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.835816][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.836870][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.838520][ T5013] Call trace: [ 87.839057][ T5013] dump_backtrace+0x0/0x458 [ 87.839738][ T5013] show_stack+0x2c/0x3c [ 87.840353][ T5013] __dump_stack+0x30/0x40 [ 87.841011][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.841720][ T5013] dump_stack+0x1c/0x5c [ 87.842347][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.843217][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.844070][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.844909][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.845673][ T5013] inet_sendmsg+0x154/0x284 [ 87.846381][ T5013] __sys_sendto+0x30c/0x420 [ 87.847159][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.847918][ T5013] invoke_syscall+0x98/0x2b0 [ 87.848639][ T5013] el0_svc_common+0x138/0x258 [ 87.849392][ T5013] do_el0_svc+0x58/0x13c [ 87.850051][ T5013] el0_svc+0x78/0x1d0 [ 87.850666][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.851517][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.852450][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.854142][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.855319][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.856863][ T5013] Call trace: [ 87.857363][ T5013] dump_backtrace+0x0/0x458 [ 87.858047][ T5013] show_stack+0x2c/0x3c [ 87.858670][ T5013] __dump_stack+0x30/0x40 [ 87.859321][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.860024][ T5013] dump_stack+0x1c/0x5c [ 87.860664][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.861488][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.862242][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.863022][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.863745][ T5013] inet_sendmsg+0x154/0x284 [ 87.864473][ T5013] __sys_sendto+0x30c/0x420 [ 87.865202][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.866001][ T5013] invoke_syscall+0x98/0x2b0 [ 87.866748][ T5013] el0_svc_common+0x138/0x258 [ 87.867499][ T5013] do_el0_svc+0x58/0x13c [ 87.868158][ T5013] el0_svc+0x78/0x1d0 [ 87.868820][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.869670][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.870605][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.872520][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.873721][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.875333][ T5013] Call trace: [ 87.875866][ T5013] dump_backtrace+0x0/0x458 [ 87.876526][ T5013] show_stack+0x2c/0x3c [ 87.877222][ T5013] __dump_stack+0x30/0x40 [ 87.877900][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.878658][ T5013] dump_stack+0x1c/0x5c [ 87.879265][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.880073][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.880876][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.881557][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.882198][ T5013] inet_sendmsg+0x154/0x284 [ 87.882836][ T5013] __sys_sendto+0x30c/0x420 [ 87.883469][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.884141][ T5013] invoke_syscall+0x98/0x2b0 [ 87.884780][ T5013] el0_svc_common+0x138/0x258 [ 87.885454][ T5013] do_el0_svc+0x58/0x13c [ 87.886028][ T5013] el0_svc+0x78/0x1d0 [ 87.886579][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.887278][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.888136][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.889626][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.890599][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.892027][ T5013] Call trace: [ 87.892484][ T5013] dump_backtrace+0x0/0x458 [ 87.893114][ T5013] show_stack+0x2c/0x3c [ 87.893783][ T5013] __dump_stack+0x30/0x40 [ 87.894492][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.895265][ T5013] dump_stack+0x1c/0x5c [ 87.895921][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.896770][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.897521][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.898232][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.898951][ T5013] inet_sendmsg+0x154/0x284 [ 87.899632][ T5013] __sys_sendto+0x30c/0x420 [ 87.900317][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.901012][ T5013] invoke_syscall+0x98/0x2b0 [ 87.901669][ T5013] el0_svc_common+0x138/0x258 [ 87.902318][ T5013] do_el0_svc+0x58/0x13c [ 87.902944][ T5013] el0_svc+0x78/0x1d0 [ 87.903529][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.904219][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.905049][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.906734][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.907848][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.909376][ T5013] Call trace: [ 87.909812][ T5013] dump_backtrace+0x0/0x458 [ 87.910456][ T5013] show_stack+0x2c/0x3c [ 87.911030][ T5013] __dump_stack+0x30/0x40 [ 87.911679][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.912374][ T5013] dump_stack+0x1c/0x5c [ 87.913112][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.914000][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.914795][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.915562][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.916269][ T5013] inet_sendmsg+0x154/0x284 [ 87.916975][ T5013] __sys_sendto+0x30c/0x420 [ 87.917665][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.918483][ T5013] invoke_syscall+0x98/0x2b0 [ 87.919239][ T5013] el0_svc_common+0x138/0x258 [ 87.919955][ T5013] do_el0_svc+0x58/0x13c [ 87.920611][ T5013] el0_svc+0x78/0x1d0 [ 87.921248][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.921975][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.922807][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.924374][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.925378][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.926960][ T5013] Call trace: [ 87.927471][ T5013] dump_backtrace+0x0/0x458 [ 87.928126][ T5013] show_stack+0x2c/0x3c [ 87.928826][ T5013] __dump_stack+0x30/0x40 [ 87.929547][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.930317][ T5013] dump_stack+0x1c/0x5c [ 87.931003][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.931905][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.932734][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.933493][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.934188][ T5013] inet_sendmsg+0x154/0x284 [ 87.934893][ T5013] __sys_sendto+0x30c/0x420 [ 87.935661][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.936434][ T5013] invoke_syscall+0x98/0x2b0 [ 87.937164][ T5013] el0_svc_common+0x138/0x258 [ 87.937952][ T5013] do_el0_svc+0x58/0x13c [ 87.938674][ T5013] el0_svc+0x78/0x1d0 [ 87.939293][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.940091][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.941049][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.942877][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.943947][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.945579][ T5013] Call trace: [ 87.946124][ T5013] dump_backtrace+0x0/0x458 [ 87.946869][ T5013] show_stack+0x2c/0x3c [ 87.947556][ T5013] __dump_stack+0x30/0x40 [ 87.948214][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.948910][ T5013] dump_stack+0x1c/0x5c [ 87.949584][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.950423][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.951179][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.951898][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.952593][ T5013] inet_sendmsg+0x154/0x284 [ 87.953321][ T5013] __sys_sendto+0x30c/0x420 [ 87.954026][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.954763][ T5013] invoke_syscall+0x98/0x2b0 [ 87.955467][ T5013] el0_svc_common+0x138/0x258 [ 87.956178][ T5013] do_el0_svc+0x58/0x13c [ 87.956805][ T5013] el0_svc+0x78/0x1d0 [ 87.957498][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.958314][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.959198][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.960735][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.961871][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.963373][ T5013] Call trace: [ 87.963857][ T5013] dump_backtrace+0x0/0x458 [ 87.964607][ T5013] show_stack+0x2c/0x3c [ 87.965318][ T5013] __dump_stack+0x30/0x40 [ 87.966060][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.966835][ T5013] dump_stack+0x1c/0x5c [ 87.967531][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.968401][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.969172][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.969889][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.970638][ T5013] inet_sendmsg+0x154/0x284 [ 87.971393][ T5013] __sys_sendto+0x30c/0x420 [ 87.972136][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.972960][ T5013] invoke_syscall+0x98/0x2b0 [ 87.973693][ T5013] el0_svc_common+0x138/0x258 [ 87.974381][ T5013] do_el0_svc+0x58/0x13c [ 87.975073][ T5013] el0_svc+0x78/0x1d0 [ 87.975676][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.976465][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.977447][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.979236][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.980415][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.982024][ T5013] Call trace: [ 87.982561][ T5013] dump_backtrace+0x0/0x458 [ 87.983324][ T5013] show_stack+0x2c/0x3c [ 87.984001][ T5013] __dump_stack+0x30/0x40 [ 87.984720][ T5013] dump_stack_lvl+0xf4/0x15c [ 87.985472][ T5013] dump_stack+0x1c/0x5c [ 87.986149][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 87.986927][ T5013] dccp_xmit_packet+0x298/0x448 [ 87.987605][ T5013] dccp_write_xmit+0x118/0x1d0 [ 87.988326][ T5013] dccp_sendmsg+0x550/0x8b8 [ 87.988990][ T5013] inet_sendmsg+0x154/0x284 [ 87.989655][ T5013] __sys_sendto+0x30c/0x420 [ 87.990401][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 87.991133][ T5013] invoke_syscall+0x98/0x2b0 [ 87.991965][ T5013] el0_svc_common+0x138/0x258 [ 87.992824][ T5013] do_el0_svc+0x58/0x13c [ 87.993527][ T5013] el0_svc+0x78/0x1d0 [ 87.994204][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 87.995030][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 87.996024][ T5013] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 87.997859][ T5013] CPU: 1 PID: 5013 Comm: syz.0.52 Not tainted syzkaller #0 [ 87.998927][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.000488][ T5013] Call trace: [ 88.000990][ T5013] dump_backtrace+0x0/0x458 [ 88.001669][ T5013] show_stack+0x2c/0x3c [ 88.002352][ T5013] __dump_stack+0x30/0x40 [ 88.003098][ T5013] dump_stack_lvl+0xf4/0x15c [ 88.003866][ T5013] dump_stack+0x1c/0x5c [ 88.004575][ T5013] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.005427][ T5013] dccp_xmit_packet+0x298/0x448 [ 88.006217][ T5013] dccp_write_xmit+0x118/0x1d0 [ 88.007009][ T5013] dccp_sendmsg+0x550/0x8b8 [ 88.007686][ T5013] inet_sendmsg+0x154/0x284 [ 88.008421][ T5013] __sys_sendto+0x30c/0x420 [ 88.009155][ T5013] __arm64_sys_sendto+0xd8/0xf8 [ 88.009898][ T5013] invoke_syscall+0x98/0x2b0 [ 88.010610][ T5013] el0_svc_common+0x138/0x258 [ 88.011339][ T5013] do_el0_svc+0x58/0x13c [ 88.012022][ T5013] el0_svc+0x78/0x1d0 [ 88.012692][ T5013] el0t_64_sync_handler+0xcc/0xe4 [ 88.013471][ T5013] el0t_64_sync+0x1a0/0x1a4 [ 88.032603][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.034573][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.035679][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.037290][ T5015] Call trace: [ 88.037798][ T5015] dump_backtrace+0x0/0x458 [ 88.038527][ T5015] show_stack+0x2c/0x3c [ 88.039201][ T5015] __dump_stack+0x30/0x40 [ 88.039924][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.040641][ T5015] dump_stack+0x1c/0x5c [ 88.041271][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.042159][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.042937][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.043715][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.044463][ T5015] inet_sendmsg+0x154/0x284 [ 88.045212][ T5015] __sys_sendto+0x30c/0x420 [ 88.045988][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.046765][ T5015] invoke_syscall+0x98/0x2b0 [ 88.047515][ T5015] el0_svc_common+0x138/0x258 [ 88.048271][ T5015] do_el0_svc+0x58/0x13c [ 88.048955][ T5015] el0_svc+0x78/0x1d0 [ 88.049655][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.050539][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.051462][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.053663][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.054776][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.056299][ T5015] Call trace: [ 88.056787][ T5015] dump_backtrace+0x0/0x458 [ 88.057482][ T5015] show_stack+0x2c/0x3c [ 88.058138][ T5015] __dump_stack+0x30/0x40 [ 88.058783][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.059450][ T5015] dump_stack+0x1c/0x5c [ 88.060149][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.060988][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.061723][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.062425][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.063085][ T5015] inet_sendmsg+0x154/0x284 [ 88.063716][ T5015] __sys_sendto+0x30c/0x420 [ 88.064361][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.065243][ T5015] invoke_syscall+0x98/0x2b0 [ 88.066007][ T5015] el0_svc_common+0x138/0x258 [ 88.066695][ T5015] do_el0_svc+0x58/0x13c [ 88.067389][ T5015] el0_svc+0x78/0x1d0 [ 88.067989][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.068786][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.069670][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.071402][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.072618][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.074325][ T5015] Call trace: [ 88.074872][ T5015] dump_backtrace+0x0/0x458 [ 88.075587][ T5015] show_stack+0x2c/0x3c [ 88.076238][ T5015] __dump_stack+0x30/0x40 [ 88.076916][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.077735][ T5015] dump_stack+0x1c/0x5c [ 88.078403][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.079301][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.080119][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.080934][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.081634][ T5015] inet_sendmsg+0x154/0x284 [ 88.082363][ T5015] __sys_sendto+0x30c/0x420 [ 88.083107][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.083932][ T5015] invoke_syscall+0x98/0x2b0 [ 88.084663][ T5015] el0_svc_common+0x138/0x258 [ 88.085418][ T5015] do_el0_svc+0x58/0x13c [ 88.086116][ T5015] el0_svc+0x78/0x1d0 [ 88.086798][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.087609][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.089168][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.090912][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.092051][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.093667][ T5015] Call trace: [ 88.094203][ T5015] dump_backtrace+0x0/0x458 [ 88.094991][ T5015] show_stack+0x2c/0x3c [ 88.095699][ T5015] __dump_stack+0x30/0x40 [ 88.096442][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.097180][ T5015] dump_stack+0x1c/0x5c [ 88.097894][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.098800][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.099587][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.100352][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.101063][ T5015] inet_sendmsg+0x154/0x284 [ 88.101777][ T5015] __sys_sendto+0x30c/0x420 [ 88.102534][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.103328][ T5015] invoke_syscall+0x98/0x2b0 [ 88.104103][ T5015] el0_svc_common+0x138/0x258 [ 88.104848][ T5015] do_el0_svc+0x58/0x13c [ 88.105498][ T5015] el0_svc+0x78/0x1d0 [ 88.106186][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.107012][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.108029][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.109806][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.111061][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.112678][ T5015] Call trace: [ 88.113183][ T5015] dump_backtrace+0x0/0x458 [ 88.113935][ T5015] show_stack+0x2c/0x3c [ 88.114617][ T5015] __dump_stack+0x30/0x40 [ 88.115344][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.116101][ T5015] dump_stack+0x1c/0x5c [ 88.116761][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.117667][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.118443][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.119183][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.119873][ T5015] inet_sendmsg+0x154/0x284 [ 88.120630][ T5015] __sys_sendto+0x30c/0x420 [ 88.121381][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.122165][ T5015] invoke_syscall+0x98/0x2b0 [ 88.122880][ T5015] el0_svc_common+0x138/0x258 [ 88.123625][ T5015] do_el0_svc+0x58/0x13c [ 88.124309][ T5015] el0_svc+0x78/0x1d0 [ 88.124924][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.125704][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.126585][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.128377][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.129467][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.131032][ T5015] Call trace: [ 88.131539][ T5015] dump_backtrace+0x0/0x458 [ 88.132280][ T5015] show_stack+0x2c/0x3c [ 88.132927][ T5015] __dump_stack+0x30/0x40 [ 88.133592][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.134325][ T5015] dump_stack+0x1c/0x5c [ 88.134999][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.135930][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.136721][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.137486][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.138228][ T5015] inet_sendmsg+0x154/0x284 [ 88.138990][ T5015] __sys_sendto+0x30c/0x420 [ 88.139750][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.140533][ T5015] invoke_syscall+0x98/0x2b0 [ 88.141255][ T5015] el0_svc_common+0x138/0x258 [ 88.142017][ T5015] do_el0_svc+0x58/0x13c [ 88.142767][ T5015] el0_svc+0x78/0x1d0 [ 88.143452][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.144236][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.145157][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.146911][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.148096][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.149693][ T5015] Call trace: [ 88.150216][ T5015] dump_backtrace+0x0/0x458 [ 88.150913][ T5015] show_stack+0x2c/0x3c [ 88.151558][ T5015] __dump_stack+0x30/0x40 [ 88.152263][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.152979][ T5015] dump_stack+0x1c/0x5c [ 88.153694][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.154569][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.155330][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.156144][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.156864][ T5015] inet_sendmsg+0x154/0x284 [ 88.157582][ T5015] __sys_sendto+0x30c/0x420 [ 88.158290][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.159037][ T5015] invoke_syscall+0x98/0x2b0 [ 88.159790][ T5015] el0_svc_common+0x138/0x258 [ 88.160507][ T5015] do_el0_svc+0x58/0x13c [ 88.161178][ T5015] el0_svc+0x78/0x1d0 [ 88.161782][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.162527][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.163731][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.165398][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.166569][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.167983][ T5015] Call trace: [ 88.168438][ T5015] dump_backtrace+0x0/0x458 [ 88.169064][ T5015] show_stack+0x2c/0x3c [ 88.169643][ T5015] __dump_stack+0x30/0x40 [ 88.170271][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.171037][ T5015] dump_stack+0x1c/0x5c [ 88.171688][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.172568][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.173345][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.174121][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.174890][ T5015] inet_sendmsg+0x154/0x284 [ 88.175616][ T5015] __sys_sendto+0x30c/0x420 [ 88.176367][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.177159][ T5015] invoke_syscall+0x98/0x2b0 [ 88.177870][ T5015] el0_svc_common+0x138/0x258 [ 88.178578][ T5015] do_el0_svc+0x58/0x13c [ 88.179281][ T5015] el0_svc+0x78/0x1d0 [ 88.179955][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.180790][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.181736][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.183496][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.184606][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.186313][ T5015] Call trace: [ 88.186863][ T5015] dump_backtrace+0x0/0x458 [ 88.187520][ T5015] show_stack+0x2c/0x3c [ 88.188153][ T5015] __dump_stack+0x30/0x40 [ 88.188907][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.189677][ T5015] dump_stack+0x1c/0x5c [ 88.190359][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.191249][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.192065][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.192884][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.193626][ T5015] inet_sendmsg+0x154/0x284 [ 88.194362][ T5015] __sys_sendto+0x30c/0x420 [ 88.195096][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.195833][ T5015] invoke_syscall+0x98/0x2b0 [ 88.196545][ T5015] el0_svc_common+0x138/0x258 [ 88.197307][ T5015] do_el0_svc+0x58/0x13c [ 88.197937][ T5015] el0_svc+0x78/0x1d0 [ 88.198579][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.199395][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.200393][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.202146][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.203265][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.204921][ T5015] Call trace: [ 88.205417][ T5015] dump_backtrace+0x0/0x458 [ 88.206155][ T5015] show_stack+0x2c/0x3c [ 88.206775][ T5015] __dump_stack+0x30/0x40 [ 88.207455][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.208195][ T5015] dump_stack+0x1c/0x5c [ 88.208820][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.209736][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.210546][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.211334][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.212050][ T5015] inet_sendmsg+0x154/0x284 [ 88.212799][ T5015] __sys_sendto+0x30c/0x420 [ 88.213607][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.214406][ T5015] invoke_syscall+0x98/0x2b0 [ 88.215135][ T5015] el0_svc_common+0x138/0x258 [ 88.215914][ T5015] do_el0_svc+0x58/0x13c [ 88.216640][ T5015] el0_svc+0x78/0x1d0 [ 88.217303][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.218157][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.219067][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.220865][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.222005][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.223606][ T5015] Call trace: [ 88.224120][ T5015] dump_backtrace+0x0/0x458 [ 88.224854][ T5015] show_stack+0x2c/0x3c [ 88.225510][ T5015] __dump_stack+0x30/0x40 [ 88.226240][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.226951][ T5015] dump_stack+0x1c/0x5c [ 88.227629][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.228507][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.229246][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.230035][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.230776][ T5015] inet_sendmsg+0x154/0x284 [ 88.231477][ T5015] __sys_sendto+0x30c/0x420 [ 88.232144][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.232932][ T5015] invoke_syscall+0x98/0x2b0 [ 88.233689][ T5015] el0_svc_common+0x138/0x258 [ 88.234430][ T5015] do_el0_svc+0x58/0x13c [ 88.235114][ T5015] el0_svc+0x78/0x1d0 [ 88.235733][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.236561][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.237426][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.239313][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.240500][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.242018][ T5015] Call trace: [ 88.242512][ T5015] dump_backtrace+0x0/0x458 [ 88.243218][ T5015] show_stack+0x2c/0x3c [ 88.243880][ T5015] __dump_stack+0x30/0x40 [ 88.244592][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.245336][ T5015] dump_stack+0x1c/0x5c [ 88.245974][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.246800][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.247533][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.248382][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.249052][ T5015] inet_sendmsg+0x154/0x284 [ 88.249702][ T5015] __sys_sendto+0x30c/0x420 [ 88.250348][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.251070][ T5015] invoke_syscall+0x98/0x2b0 [ 88.251799][ T5015] el0_svc_common+0x138/0x258 [ 88.252485][ T5015] do_el0_svc+0x58/0x13c [ 88.253186][ T5015] el0_svc+0x78/0x1d0 [ 88.253815][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.254615][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.255583][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.257211][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.258290][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.259719][ T5015] Call trace: [ 88.260166][ T5015] dump_backtrace+0x0/0x458 [ 88.260833][ T5015] show_stack+0x2c/0x3c [ 88.261485][ T5015] __dump_stack+0x30/0x40 [ 88.262177][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.262963][ T5015] dump_stack+0x1c/0x5c [ 88.263618][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.264484][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.265197][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.265950][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.266638][ T5015] inet_sendmsg+0x154/0x284 [ 88.267366][ T5015] __sys_sendto+0x30c/0x420 [ 88.268029][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.268761][ T5015] invoke_syscall+0x98/0x2b0 [ 88.269431][ T5015] el0_svc_common+0x138/0x258 [ 88.270188][ T5015] do_el0_svc+0x58/0x13c [ 88.270867][ T5015] el0_svc+0x78/0x1d0 [ 88.271495][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.272265][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.273518][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() [ 88.275105][ T5015] CPU: 0 PID: 5015 Comm: syz.0.53 Not tainted syzkaller #0 [ 88.276269][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.277861][ T5015] Call trace: [ 88.278389][ T5015] dump_backtrace+0x0/0x458 [ 88.279083][ T5015] show_stack+0x2c/0x3c [ 88.279781][ T5015] __dump_stack+0x30/0x40 [ 88.280465][ T5015] dump_stack_lvl+0xf4/0x15c [ 88.281177][ T5015] dump_stack+0x1c/0x5c [ 88.281821][ T5015] ccid3_hc_tx_packet_sent+0x240/0x2c4 [ 88.282592][ T5015] dccp_xmit_packet+0x298/0x448 [ 88.283373][ T5015] dccp_write_xmit+0x118/0x1d0 [ 88.284154][ T5015] dccp_sendmsg+0x550/0x8b8 [ 88.284883][ T5015] inet_sendmsg+0x154/0x284 [ 88.285691][ T5015] __sys_sendto+0x30c/0x420 [ 88.286368][ T5015] __arm64_sys_sendto+0xd8/0xf8 [ 88.287128][ T5015] invoke_syscall+0x98/0x2b0 [ 88.287830][ T5015] el0_svc_common+0x138/0x258 [ 88.288599][ T5015] do_el0_svc+0x58/0x13c [ 88.289278][ T5015] el0_svc+0x78/0x1d0 [ 88.289912][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 88.290761][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 88.291779][ T5015] BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval()