[ 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 '10.128.1.73' (ECDSA) to the list of known hosts. syzkaller login: [ 34.431248] IPVS: ftp: loaded support on port[0] = 21 [ 34.502687] chnl_net:caif_netlink_parms(): no params data found [ 34.582642] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.589536] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.597997] device bridge_slave_0 entered promiscuous mode [ 34.605728] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.612470] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.619606] device bridge_slave_1 entered promiscuous mode [ 34.637170] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 34.646299] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 34.667087] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 34.674643] team0: Port device team_slave_0 added [ 34.681370] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 34.689614] team0: Port device team_slave_1 added [ 34.706834] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.713508] 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. [ 34.740881] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.753201] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 34.761821] 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. [ 34.789129] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 34.804385] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 34.812194] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 34.832658] device hsr_slave_0 entered promiscuous mode [ 34.838790] device hsr_slave_1 entered promiscuous mode [ 34.845614] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 34.852786] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 34.918706] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.925844] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.933075] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.940393] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.977354] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.985342] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.994944] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 35.004537] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 35.013512] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.022222] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.029686] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 35.041746] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 35.047864] 8021q: adding VLAN 0 to HW filter on device team0 [ 35.058119] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 35.067029] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.073631] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.083620] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 35.091963] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.098514] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.119080] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 35.129344] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 35.140638] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 35.148044] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 35.158055] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 35.166311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 35.174500] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 35.182737] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 35.189636] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 35.204790] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 35.212215] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 35.219564] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 35.230864] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 35.267360] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 35.277039] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 35.307824] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 35.316053] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 35.323468] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 35.332479] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 35.341972] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 35.348941] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 35.361535] device veth0_vlan entered promiscuous mode [ 35.370689] device veth1_vlan entered promiscuous mode [ 35.376915] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 35.386306] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 35.397850] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 35.407706] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 35.415947] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 35.423635] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 35.434615] device veth0_macvtap entered promiscuous mode [ 35.441370] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 35.449401] device veth1_macvtap entered promiscuous mode [ 35.458302] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 35.468231] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 35.478658] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 35.486502] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 35.495684] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 35.505816] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 35.513254] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 35.519922] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 35.527983] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 35.618481] ------------[ cut here ]------------ [ 35.623710] HSR: VLAN not yet supported [ 35.624059] WARNING: CPU: 0 PID: 8107 at net/hsr/hsr_forward.c:336 hsr_forward_skb+0x177e/0x1c30 [ 35.637852] Kernel panic - not syncing: panic_on_warn set ... [ 35.637852] [ 35.646441] CPU: 0 PID: 8107 Comm: syz-executor398 Not tainted 4.19.211-syzkaller #0 [ 35.654652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.664201] Call Trace: [ 35.667474] dump_stack+0x1fc/0x2ef [ 35.671085] panic+0x26a/0x50e [ 35.674355] ? __warn_printk+0xf3/0xf3 [ 35.678501] ? hsr_forward_skb+0x177e/0x1c30 [ 35.683158] ? __probe_kernel_read+0x130/0x1b0 [ 35.687894] ? __warn.cold+0x5/0x5a [ 35.691597] ? __warn+0xe4/0x200 [ 35.695061] ? hsr_forward_skb+0x177e/0x1c30 [ 35.699469] __warn.cold+0x20/0x5a [ 35.702999] ? kvm_sched_clock_read+0x14/0x40 [ 35.707572] ? hsr_forward_skb+0x177e/0x1c30 [ 35.711967] report_bug+0x262/0x2b0 [ 35.715583] do_error_trap+0x1d7/0x310 [ 35.719453] ? math_error+0x310/0x310 [ 35.723415] ? vprintk_store+0x1f0/0x410 [ 35.727576] ? vprintk_emit+0x22d/0x740 [ 35.731768] ? error_entry+0x72/0xd0 [ 35.736044] ? trace_hardirqs_off_caller+0x6e/0x210 [ 35.741141] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.746389] invalid_op+0x14/0x20 [ 35.749844] RIP: 0010:hsr_forward_skb+0x177e/0x1c30 [ 35.755009] Code: 4c 89 ea 48 8b 7c 24 28 e8 df 5a ff ff e9 c7 f5 ff ff e8 55 3f 77 f9 48 c7 c7 20 e3 70 89 c6 05 a6 67 23 03 01 e8 27 77 07 00 <0f> 0b 48 ba 00 00 00 00 00 fc ff df 4c 89 f0 48 c1 e8 03 0f b6 0c [ 35.774502] RSP: 0018:ffff8880957af7e0 EFLAGS: 00010286 [ 35.780460] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 35.787883] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012af5eee [ 35.795139] RBP: ffff8880a91e0e00 R08: 0000000000000000 R09: 0000000000000731 [ 35.802497] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8880a91e0ec6 [ 35.809927] R13: ffff8880a328e900 R14: ffff8880a2e6884e R15: ffff8880a2e68842 [ 35.817287] ? vprintk_func+0x81/0x180 [ 35.821255] ? rcu_is_watching+0x53/0xc0 [ 35.825303] ? check_preemption_disabled+0x41/0x280 [ 35.830320] hsr_dev_xmit+0x6b/0xa0 [ 35.833940] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.838971] dev_hard_start_xmit+0x1a8/0x920 [ 35.843369] __dev_queue_xmit+0x269d/0x2e00 [ 35.847676] ? copyin+0xa4/0xf0 [ 35.850937] ? netdev_pick_tx+0x2f0/0x2f0 [ 35.855065] ? _copy_from_iter+0x30e/0xb80 [ 35.859298] ? skb_copy_datagram_from_iter+0x45f/0x680 [ 35.864588] packet_sendmsg+0x25ae/0x7720 [ 35.868766] ? aa_sk_perm+0x534/0x930 [ 35.872560] ? compat_packet_setsockopt+0x160/0x160 [ 35.877651] ? aa_af_perm+0x230/0x230 [ 35.881442] ? compat_packet_setsockopt+0x160/0x160 [ 35.886451] sock_sendmsg+0xc3/0x120 [ 35.890153] __sys_sendto+0x21a/0x320 [ 35.893943] ? __ia32_sys_getpeername+0xb0/0xb0 [ 35.898773] ? lock_downgrade+0x720/0x720 [ 35.902913] ? up_read+0x17/0x110 [ 35.906348] ? __do_page_fault+0x180/0xd60 [ 35.910745] __x64_sys_sendto+0xdd/0x1b0 [ 35.914873] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.919548] do_syscall_64+0xf9/0x620 [ 35.923360] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.928795] RIP: 0033:0x7fa7699934b9 [ 35.932501] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 35.951474] RSP: 002b:00007ffe13bcd3e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 35.959166] RAX: ffffffffffffffda RBX: 00007ffe13bcd408 RCX: 00007fa7699934b9 [ 35.966588] RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000003 [ 35.973929] RBP: 0000000000000003 R08: 0000000020000100 R09: 0000000000000014 [ 35.981187] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe13bcd410 [ 35.988438] R13: 00007ffe13bcd430 R14: 0000000000000000 R15: 0000000000000000 [ 35.996261] Kernel Offset: disabled [ 35.999924] Rebooting in 86400 seconds..