[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts. syzkaller login: [ 33.139645] IPVS: ftp: loaded support on port[0] = 21 [ 33.208794] chnl_net:caif_netlink_parms(): no params data found [ 33.310978] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.317765] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.325462] device bridge_slave_0 entered promiscuous mode [ 33.333232] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.339592] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.346984] device bridge_slave_1 entered promiscuous mode [ 33.364069] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.372941] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.392259] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.399842] team0: Port device team_slave_0 added [ 33.406116] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.413810] team0: Port device team_slave_1 added [ 33.430159] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.436617] 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. [ 33.462535] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.474238] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.480478] 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. [ 33.506508] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 33.517522] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 33.525947] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 33.545017] device hsr_slave_0 entered promiscuous mode [ 33.550701] device hsr_slave_1 entered promiscuous mode [ 33.557378] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 33.564842] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 33.629422] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.635860] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.642858] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.649211] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.680744] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 33.687749] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.696414] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.705320] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.714695] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.722025] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.728935] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 33.739911] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 33.746941] 8021q: adding VLAN 0 to HW filter on device team0 [ 33.756365] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 33.764964] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.771370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 33.780508] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 33.788283] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.794696] bridge0: port 2(bridge_slave_1) entered forwarding state [ 33.809569] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 33.818361] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 33.834060] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 33.841984] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 33.849452] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 33.860061] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 33.867142] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 33.879554] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 33.887532] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 33.894462] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 33.905076] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 33.917120] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 33.927398] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.958681] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 33.966372] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 33.973700] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 33.983243] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.991612] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 33.998476] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.008197] device veth0_vlan entered promiscuous mode [ 34.017060] device veth1_vlan entered promiscuous mode [ 34.023501] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.029865] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.043550] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.055066] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.064064] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.072082] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.081193] device veth0_macvtap entered promiscuous mode [ 34.087302] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 34.096521] device veth1_macvtap entered promiscuous mode [ 34.105725] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.115283] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.125858] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.133778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.142391] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.152584] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.159251] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 34.250351] ------------[ cut here ]------------ [ 34.255226] HSR: VLAN not yet supported [ 34.255575] WARNING: CPU: 1 PID: 8096 at net/hsr/hsr_forward.c:336 hsr_forward_skb+0x177e/0x1c30 [ 34.270426] Kernel panic - not syncing: panic_on_warn set ... [ 34.270426] [ 34.279783] CPU: 1 PID: 8096 Comm: syz-executor351 Not tainted 4.19.211-syzkaller #0 [ 34.287640] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 34.296995] Call Trace: [ 34.299577] dump_stack+0x1fc/0x2ef [ 34.303184] panic+0x26a/0x50e [ 34.306369] ? __warn_printk+0xf3/0xf3 [ 34.310238] ? hsr_forward_skb+0x177e/0x1c30 [ 34.314625] ? __probe_kernel_read+0x130/0x1b0 [ 34.319185] ? __warn.cold+0x5/0x5a [ 34.322790] ? __warn+0xe4/0x200 [ 34.326139] ? hsr_forward_skb+0x177e/0x1c30 [ 34.330525] __warn.cold+0x20/0x5a [ 34.334042] ? kvm_sched_clock_read+0x14/0x40 [ 34.338514] ? hsr_forward_skb+0x177e/0x1c30 [ 34.342900] report_bug+0x262/0x2b0 [ 34.346508] do_error_trap+0x1d7/0x310 [ 34.350386] ? math_error+0x310/0x310 [ 34.354164] ? vprintk_store+0x1f0/0x410 [ 34.358206] ? vprintk_emit+0x22d/0x740 [ 34.362256] ? error_entry+0x72/0xd0 [ 34.365951] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.370962] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.375799] invalid_op+0x14/0x20 [ 34.379251] RIP: 0010:hsr_forward_skb+0x177e/0x1c30 [ 34.384245] 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 [ 34.403128] RSP: 0018:ffff8880952977e0 EFLAGS: 00010286 [ 34.408468] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 34.415712] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012a52eee [ 34.423045] RBP: ffff8880a9791580 R08: 0000000000000000 R09: 0000000000000730 [ 34.430293] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8880a9791646 [ 34.437543] R13: ffff8880b280f700 R14: ffff8880aa7ada4e R15: ffff8880aa7ada42 [ 34.444810] ? vprintk_func+0x81/0x180 [ 34.448681] ? rcu_is_watching+0x53/0xc0 [ 34.452723] ? check_preemption_disabled+0x41/0x280 [ 34.457740] hsr_dev_xmit+0x6b/0xa0 [ 34.461348] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.466349] dev_hard_start_xmit+0x1a8/0x920 [ 34.470746] __dev_queue_xmit+0x269d/0x2e00 [ 34.475049] ? sock_alloc_send_pskb+0x609/0x830 [ 34.479697] ? mark_held_locks+0xf0/0xf0 [ 34.483740] ? netdev_pick_tx+0x2f0/0x2f0 [ 34.487864] ? mark_held_locks+0xf0/0xf0 [ 34.491904] ? sock_kzfree_s+0x60/0x60 [ 34.495776] ? lock_downgrade+0x720/0x720 [ 34.499901] ? lock_acquire+0x170/0x3c0 [ 34.503854] ? netif_device_attach+0x1c0/0x1c0 [ 34.508414] ? skb_copy_datagram_from_iter+0x45f/0x680 [ 34.513668] ? memcpy+0x35/0x50 [ 34.516929] packet_sendmsg+0x25ae/0x7720 [ 34.521067] ? aa_sk_perm+0x534/0x930 [ 34.524846] ? compat_packet_setsockopt+0x160/0x160 [ 34.529839] ? aa_af_perm+0x230/0x230 [ 34.533623] ? compat_packet_setsockopt+0x160/0x160 [ 34.538734] sock_sendmsg+0xc3/0x120 [ 34.542428] __sys_sendto+0x21a/0x320 [ 34.546222] ? __ia32_sys_getpeername+0xb0/0xb0 [ 34.550874] ? lock_downgrade+0x720/0x720 [ 34.555003] ? up_read+0x17/0x110 [ 34.558449] ? __do_page_fault+0x180/0xd60 [ 34.562663] __x64_sys_sendto+0xdd/0x1b0 [ 34.566705] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.571268] do_syscall_64+0xf9/0x620 [ 34.575052] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.580220] RIP: 0033:0x7f8e56ac33d9 [ 34.583915] 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 [ 34.602801] RSP: 002b:00007ffd7aef07b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 34.610499] RAX: ffffffffffffffda RBX: 00007ffd7aef07d8 RCX: 00007f8e56ac33d9 [ 34.617750] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 34.625002] RBP: 0000000000000003 R08: 0000000020000140 R09: 0000000000000014 [ 34.632251] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd7aef07e0 [ 34.639496] R13: 00007ffd7aef0800 R14: 0000000000000000 R15: 0000000000000000 [ 34.647027] Kernel Offset: disabled [ 34.650684] Rebooting in 86400 seconds..