[ 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 '10.128.1.56' (ECDSA) to the list of known hosts. syzkaller login: [ 28.459717] IPVS: ftp: loaded support on port[0] = 21 [ 28.524170] chnl_net:caif_netlink_parms(): no params data found [ 28.586670] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.594167] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.602009] device bridge_slave_0 entered promiscuous mode [ 28.609205] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.615562] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.622791] device bridge_slave_1 entered promiscuous mode [ 28.638876] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 28.647916] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 28.664933] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 28.672066] team0: Port device team_slave_0 added [ 28.677527] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 28.684542] team0: Port device team_slave_1 added [ 28.699038] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 28.705378] 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. [ 28.731735] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 28.743228] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 28.750363] 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. [ 28.775921] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 28.790432] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 28.797781] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 28.815485] device hsr_slave_0 entered promiscuous mode [ 28.821215] device hsr_slave_1 entered promiscuous mode [ 28.827023] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 28.834100] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 28.891740] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.898152] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.904829] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.911208] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.936565] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 28.942934] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.951649] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 28.960062] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.979045] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.985978] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.996479] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 29.003156] 8021q: adding VLAN 0 to HW filter on device team0 [ 29.011352] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.019094] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.025429] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.038638] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.046175] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.052555] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.065575] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 29.073690] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 29.086465] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 29.096874] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 29.108152] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 29.114537] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 29.122495] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.130170] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.139037] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 29.151111] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 29.158665] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 29.165292] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 29.175858] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 29.225389] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 29.235195] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.265780] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 29.273444] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 29.280232] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 29.288974] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.296264] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.304111] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.312881] device veth0_vlan entered promiscuous mode [ 29.321319] device veth1_vlan entered promiscuous mode [ 29.327309] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 29.335373] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 29.346583] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 29.356294] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 29.363737] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 29.370999] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.380274] device veth0_macvtap entered promiscuous mode [ 29.386252] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 29.395167] device veth1_macvtap entered promiscuous mode [ 29.403304] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 29.412329] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 29.421841] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 29.428999] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.437327] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 29.446080] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 29.453702] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 29.517075] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 29.541929] net/hsr/hsr_forward.c:367: Malformed frame (port_src hsr0) [ 29.548765] ------------[ cut here ]------------ [ 29.553680] WARNING: CPU: 0 PID: 7977 at net/hsr/hsr_forward.c:366 hsr_forward_skb.cold+0x27/0xef [ 29.562684] Kernel panic - not syncing: panic_on_warn set ... [ 29.562684] [ 29.570026] CPU: 0 PID: 7977 Comm: syz-executor180 Not tainted 4.14.302-syzkaller #0 [ 29.577973] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 29.587312] Call Trace: [ 29.589884] dump_stack+0x1b2/0x281 [ 29.593492] panic+0x1f9/0x42d [ 29.596664] ? add_taint.cold+0x16/0x16 [ 29.600623] ? hsr_forward_skb.cold+0x27/0xef [ 29.605114] ? hsr_forward_skb.cold+0x27/0xef [ 29.609673] __warn.cold+0x20/0x44 [ 29.613189] ? ist_end_non_atomic+0x10/0x10 [ 29.617484] ? hsr_forward_skb.cold+0x27/0xef [ 29.621955] report_bug+0x208/0x250 [ 29.625561] do_error_trap+0x195/0x2d0 [ 29.629422] ? math_error+0x2d0/0x2d0 [ 29.633200] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.638018] invalid_op+0x1b/0x40 [ 29.641447] RIP: 0010:hsr_forward_skb.cold+0x27/0xef [ 29.646518] RSP: 0018:ffff8880b3037890 EFLAGS: 00010282 [ 29.651855] RAX: 000000000000003a RBX: 0000000000000000 RCX: 0000000000000000 [ 29.659111] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1016606f08 [ 29.666357] RBP: ffff8880b29afd00 R08: 000000000000003a R09: 0000000000000000 [ 29.673630] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b284ac00 [ 29.680891] R13: ffff888099347800 R14: ffff888099347810 R15: ffff8880b29afdd0 [ 29.688158] ? validate_xmit_skb+0x669/0x9f0 [ 29.692557] hsr_dev_xmit+0x6b/0xa0 [ 29.696162] packet_direct_xmit+0x410/0x610 [ 29.700465] packet_snd+0x13aa/0x26f0 [ 29.704250] ? __lock_acquire+0x5fc/0x3f20 [ 29.708461] ? prb_retire_rx_blk_timer_expired+0x630/0x630 [ 29.714082] ? __lock_acquire+0x5fc/0x3f20 [ 29.718300] ? release_pages+0x828/0xbf0 [ 29.722336] packet_sendmsg+0x12ed/0x33a0 [ 29.726497] ? lock_acquire+0x170/0x3f0 [ 29.730445] ? lock_downgrade+0x740/0x740 [ 29.734585] ? __might_fault+0x104/0x1b0 [ 29.738720] ? __might_fault+0x104/0x1b0 [ 29.742760] ? compat_packet_setsockopt+0x140/0x140 [ 29.747752] ? lock_acquire+0x170/0x3f0 [ 29.751698] ? lock_downgrade+0x740/0x740 [ 29.755819] ? __might_fault+0x177/0x1b0 [ 29.759852] ? security_socket_sendmsg+0x83/0xb0 [ 29.764582] ? compat_packet_setsockopt+0x140/0x140 [ 29.769586] sock_sendmsg+0xb5/0x100 [ 29.773292] SyS_sendto+0x1c7/0x2c0 [ 29.776903] ? SyS_getpeername+0x220/0x220 [ 29.781120] ? do_vfs_ioctl+0xe2/0xff0 [ 29.785006] ? __fdget+0x167/0x1f0 [ 29.788526] ? security_socket_setsockopt+0x83/0xb0 [ 29.793516] ? SyS_setsockopt+0x130/0x1e0 [ 29.797766] ? SyS_recv+0x40/0x40 [ 29.801223] ? security_file_ioctl+0x83/0xb0 [ 29.805618] ? do_syscall_64+0x4c/0x640 [ 29.809568] ? SyS_getpeername+0x220/0x220 [ 29.813777] do_syscall_64+0x1d5/0x640 [ 29.817643] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.822808] RIP: 0033:0x7f370c9ad509 [ 29.826612] RSP: 002b:00007ffdbad8b478 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 29.834311] RAX: ffffffffffffffda RBX: 00007ffdbad8b498 RCX: 00007f370c9ad509 [ 29.841561] RDX: 000000000000000e RSI: 0000000020000140 RDI: 0000000000000003 [ 29.848837] RBP: 0000000000000003 R08: 0000000020000100 R09: 0000000000000014 [ 29.856090] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdbad8b4a0 [ 29.863340] R13: 00007ffdbad8b4c0 R14: 0000000000000000 R15: 0000000000000000 [ 29.870946] Kernel Offset: disabled [ 29.874602] Rebooting in 86400 seconds..