Warning: Permanently added '10.128.1.90' (ECDSA) to the list of known hosts. syzkaller login: [ 28.282866] IPVS: ftp: loaded support on port[0] = 21 [ 28.346316] chnl_net:caif_netlink_parms(): no params data found [ 28.436616] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.443141] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.450517] device bridge_slave_0 entered promiscuous mode [ 28.457739] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.464078] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.471247] device bridge_slave_1 entered promiscuous mode [ 28.487331] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 28.496025] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 28.512928] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 28.520187] team0: Port device team_slave_0 added [ 28.525592] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 28.532590] team0: Port device team_slave_1 added [ 28.546119] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 28.552353] 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. [ 28.577591] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 28.588548] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 28.594793] 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. [ 28.620027] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 28.630456] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 28.637826] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 28.655693] device hsr_slave_0 entered promiscuous mode [ 28.661246] device hsr_slave_1 entered promiscuous mode [ 28.667210] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 28.674058] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 28.730996] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.737394] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.744020] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.750574] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.776234] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 28.782406] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.790915] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 28.799831] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.817630] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.824650] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.833654] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 28.840384] 8021q: adding VLAN 0 to HW filter on device team0 [ 28.848181] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.856148] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.862474] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.881318] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 28.891115] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 28.902193] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 28.909586] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.917366] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.923688] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.931170] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 28.939543] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 28.947223] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.954618] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.963036] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 28.969857] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 28.982320] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 28.990182] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 28.996870] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 29.007399] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 29.053602] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 29.063064] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.087972] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 29.095525] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 29.101890] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 29.110499] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.117929] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.125099] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.133236] device veth0_vlan entered promiscuous mode [ 29.141053] device veth1_vlan entered promiscuous mode [ 29.147240] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 29.155355] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 29.166090] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 29.174466] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 29.181572] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 29.188831] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.197466] device veth0_macvtap entered promiscuous mode [ 29.203548] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 29.211485] device veth1_macvtap entered promiscuous mode [ 29.219830] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 29.228927] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 29.238328] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 29.245408] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.253458] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 29.262696] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 29.270247] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 29.334770] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory executing program [ 29.810995] divide error: 0000 [#1] PREEMPT SMP KASAN [ 29.816200] Modules linked in: [ 29.819393] CPU: 1 PID: 8262 Comm: syz-executor101 Not tainted 4.14.240-syzkaller #0 [ 29.827244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.836612] task: ffff888093fd2280 task.stack: ffff8880ae738000 [ 29.842645] RIP: 0010:tcp_reno_cong_avoid+0x24a/0x2d0 [ 29.847803] RSP: 0018:ffff8880ae73f718 EFLAGS: 00010246 [ 29.853238] RAX: 000000000000000d RBX: ffff8880b044f500 RCX: 0000000000000005 [ 29.860495] RDX: 0000000000000000 RSI: 000000002433d3dc RDI: ffff8880b044fd50 [ 29.867735] RBP: 0000000000000000 R08: ffff88823fff7058 R09: 0000000000000000 [ 29.874989] R10: ffff88823fff7057 R11: 00000008c0b25f66 R12: 000000000000000d [ 29.882228] R13: 0000000000000001 R14: 00000000ffffffff R15: 0000000000000000 [ 29.889464] FS: 0000000001cc0300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.897680] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.903555] CR2: 00000000004b9110 CR3: 000000009a494000 CR4: 00000000001406e0 [ 29.910800] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.918043] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.925306] Call Trace: [ 29.927897] tcp_cdg_cong_avoid+0x13b/0x13f0 [ 29.932305] tcp_ack+0x288d/0x4580 [ 29.935826] ? tcp_fastretrans_alert+0x2a70/0x2a70 [ 29.940749] ? cache_alloc_refill+0x2fa/0x350 [ 29.945237] ? trace_hardirqs_on+0x10/0x10 [ 29.949466] ? check_preemption_disabled+0x35/0x240 [ 29.954462] tcp_rcv_established+0x4fe/0x1810 [ 29.958942] ? __release_sock+0xce/0x350 [ 29.963028] ? tcp_data_queue+0x3aa0/0x3aa0 [ 29.967323] tcp_v4_do_rcv+0x541/0x7d0 [ 29.971186] __release_sock+0x12a/0x350 [ 29.975146] ? tcp_init_xmit_timers+0x70/0x70 [ 29.979624] __sk_flush_backlog+0x22/0x30 [ 29.983753] tcp_sendmsg_locked+0x2486/0x2ef0 [ 29.988243] ? tcp_sendpage+0x60/0x60 [ 29.992026] ? __local_bh_enable_ip+0xc1/0x170 [ 29.996584] tcp_sendmsg+0x2b/0x40 [ 30.000119] inet_sendmsg+0x11a/0x4e0 [ 30.003898] ? security_socket_sendmsg+0x83/0xb0 [ 30.008644] ? inet_recvmsg+0x4d0/0x4d0 [ 30.012589] sock_sendmsg+0xb5/0x100 [ 30.016294] SyS_sendto+0x1c7/0x2c0 [ 30.019908] ? SyS_getpeername+0x220/0x220 [ 30.024122] ? tcp_abort+0x7c0/0x7c0 [ 30.027830] ? tcp_setsockopt+0x83/0xc0 [ 30.031779] ? SyS_setsockopt+0x130/0x1e0 [ 30.035921] ? SyS_recv+0x40/0x40 [ 30.039351] ? __do_page_fault+0x159/0xad0 [ 30.043566] ? do_syscall_64+0x4c/0x640 [ 30.047519] ? SyS_getpeername+0x220/0x220 [ 30.051741] do_syscall_64+0x1d5/0x640 [ 30.055605] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.060769] RIP: 0033:0x44ba49 [ 30.063931] RSP: 002b:00007ffdf1453058 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 30.071611] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044ba49 [ 30.078859] RDX: 00000000fffffd46 RSI: 0000000020000240 RDI: 0000000000000004 [ 30.086146] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000001f4 [ 30.093388] R10: 00000000000081f4 R11: 0000000000000246 R12: 00007ffdf1453080 [ 30.100630] R13: 00007ffdf1453090 R14: 0000000000007484 R15: 00007ffdf1453070 [ 30.107873] Code: f5 41 0f 47 ee 45 85 e4 89 ab 4c 08 00 00 0f 85 d5 fe ff ff 5b 5d 41 5c 41 5d 41 5e e9 70 02 3e fb e8 6b 02 3e fb 44 89 e0 31 d2 f5 41 01 c5 89 93 50 08 00 00 44 89 ab 4c 08 00 00 e9 09 ff [ 30.126915] RIP: tcp_reno_cong_avoid+0x24a/0x2d0 RSP: ffff8880ae73f718 [ 30.137459] ---[ end trace 09444daec56eee3d ]--- [ 30.142223] Kernel panic - not syncing: Fatal exception [ 30.148965] Kernel Offset: disabled [ 30.152573] Rebooting in 86400 seconds..