[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.43' (ECDSA) to the list of known hosts. syzkaller login: [ 32.318613] IPVS: ftp: loaded support on port[0] = 21 [ 32.383842] chnl_net:caif_netlink_parms(): no params data found [ 32.493923] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.500615] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.508361] device bridge_slave_0 entered promiscuous mode [ 32.515146] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.521852] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.528909] device bridge_slave_1 entered promiscuous mode [ 32.545149] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 32.553879] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 32.571207] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 32.578424] team0: Port device team_slave_0 added [ 32.583721] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 32.590992] team0: Port device team_slave_1 added [ 32.605010] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 32.611359] 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. [ 32.636587] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 32.647903] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 32.654123] 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. [ 32.679427] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 32.693681] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 32.701837] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 32.719935] device hsr_slave_0 entered promiscuous mode [ 32.725664] device hsr_slave_1 entered promiscuous mode [ 32.731488] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 32.738866] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 32.795284] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.801707] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.808595] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.814936] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.842952] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 32.849784] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.858839] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.867057] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.885103] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.892024] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.901995] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 32.908193] 8021q: adding VLAN 0 to HW filter on device team0 [ 32.916549] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.924133] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.930505] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.939973] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.947698] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.954018] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.967775] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 32.975975] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 32.985033] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 32.997436] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 33.008013] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 33.019066] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 33.025398] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 33.032856] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 33.040383] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 33.050746] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 33.058566] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 33.066143] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 33.075122] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 33.123392] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 33.133070] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.158643] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 33.165748] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 33.172108] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 33.180884] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.192738] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 33.199784] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 33.208674] device veth0_vlan entered promiscuous mode [ 33.217028] device veth1_vlan entered promiscuous mode [ 33.222724] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 33.231461] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 33.243035] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 33.252261] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 33.259438] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 33.266761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 33.276344] device veth0_macvtap entered promiscuous mode [ 33.282270] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 33.290485] device veth1_macvtap entered promiscuous mode [ 33.299165] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 33.307944] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 33.317560] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 33.325276] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 33.333159] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 33.341948] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 33.348864] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 33.385608] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 33.433110] HSR: VLAN not yet supported [ 33.433262] ------------[ cut here ]------------ [ 33.442025] WARNING: CPU: 0 PID: 7957 at net/hsr/hsr_forward.c:337 hsr_forward_skb.cold+0x87/0xef [ 33.451006] Kernel panic - not syncing: panic_on_warn set ... [ 33.451006] [ 33.458347] CPU: 0 PID: 7957 Comm: syz-executor261 Not tainted 4.14.301-syzkaller #0 [ 33.466200] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 33.475525] Call Trace: [ 33.478087] dump_stack+0x1b2/0x281 [ 33.481688] panic+0x1f9/0x42d [ 33.484857] ? add_taint.cold+0x16/0x16 [ 33.488812] ? hsr_forward_skb.cold+0x87/0xef [ 33.493285] ? hsr_forward_skb.cold+0x87/0xef [ 33.497755] __warn.cold+0x20/0x44 [ 33.501276] ? ist_end_non_atomic+0x10/0x10 [ 33.505572] ? hsr_forward_skb.cold+0x87/0xef [ 33.510043] report_bug+0x208/0x250 [ 33.513664] do_error_trap+0x195/0x2d0 [ 33.517535] ? math_error+0x2d0/0x2d0 [ 33.521320] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.526139] invalid_op+0x1b/0x40 [ 33.529570] RIP: 0010:hsr_forward_skb.cold+0x87/0xef [ 33.534644] RSP: 0018:ffff8880963e7710 EFLAGS: 00010286 [ 33.539982] RAX: 000000000000001b RBX: ffff8880b486aa42 RCX: 0000000000000000 [ 33.547226] RDX: 0000000000000000 RSI: ffff8880b363abc8 RDI: ffffed1012c7ced8 [ 33.554472] RBP: ffff8880b4003e00 R08: 000000000000001b R09: 0000000000000000 [ 33.561715] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b4003ec6 [ 33.568956] R13: ffff88809ed13f80 R14: ffff8880b486aa4e R15: ffff8880b4003ed0 [ 33.576458] ? dev_queue_xmit_nit+0x6ef/0x950 [ 33.580934] hsr_dev_xmit+0x6b/0xa0 [ 33.584532] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.589528] dev_hard_start_xmit+0x188/0x890 [ 33.593912] __dev_queue_xmit+0x1d7f/0x2480 [ 33.598207] ? netdev_pick_tx+0x2e0/0x2e0 [ 33.602327] ? __check_object_size+0x179/0x230 [ 33.606887] ? skb_copy_datagram_from_iter+0x3c1/0x5f0 [ 33.612143] packet_snd+0x13aa/0x26f0 [ 33.615921] ? __lock_acquire+0x5fc/0x3f20 [ 33.620128] ? prb_retire_rx_blk_timer_expired+0x630/0x630 [ 33.625731] ? __lock_acquire+0x5fc/0x3f20 [ 33.629942] ? release_pages+0x828/0xbf0 [ 33.633979] packet_sendmsg+0x12ed/0x33a0 [ 33.638101] ? lock_acquire+0x170/0x3f0 [ 33.642047] ? lock_downgrade+0x740/0x740 [ 33.646169] ? __might_fault+0x177/0x1b0 [ 33.650201] ? __might_fault+0x104/0x1b0 [ 33.654236] ? compat_packet_setsockopt+0x140/0x140 [ 33.659234] ? lock_acquire+0x170/0x3f0 [ 33.663183] ? lock_downgrade+0x740/0x740 [ 33.667340] ? __might_fault+0x177/0x1b0 [ 33.671375] ? security_socket_sendmsg+0x83/0xb0 [ 33.676110] ? compat_packet_setsockopt+0x140/0x140 [ 33.681117] sock_sendmsg+0xb5/0x100 [ 33.684812] SyS_sendto+0x1c7/0x2c0 [ 33.688423] ? SyS_getpeername+0x220/0x220 [ 33.692632] ? do_vfs_ioctl+0xe2/0xff0 [ 33.696589] ? security_file_ioctl+0x83/0xb0 [ 33.700975] ? do_syscall_64+0x4c/0x640 [ 33.704932] ? SyS_getpeername+0x220/0x220 [ 33.709141] do_syscall_64+0x1d5/0x640 [ 33.713011] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 33.718175] RIP: 0033:0x7f5daa47f4b9 [ 33.721859] RSP: 002b:00007ffe3a384738 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 33.729540] RAX: ffffffffffffffda RBX: 00007ffe3a384758 RCX: 00007f5daa47f4b9 [ 33.736786] RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000003 [ 33.744033] RBP: 0000000000000003 R08: 0000000020000100 R09: 0000000000000014 [ 33.751277] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe3a384760 [ 33.758526] R13: 00007ffe3a384780 R14: 0000000000000000 R15: 0000000000000000 [ 33.765948] Kernel Offset: disabled [ 33.769602] Rebooting in 86400 seconds..