Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.225' (ECDSA) to the list of known hosts. syzkaller login: [ 35.612280] IPVS: ftp: loaded support on port[0] = 21 [ 35.680300] chnl_net:caif_netlink_parms(): no params data found [ 35.800388] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.807159] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.814759] device bridge_slave_0 entered promiscuous mode [ 35.821852] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.828314] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.835677] device bridge_slave_1 entered promiscuous mode [ 35.852451] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.861797] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.879213] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.886583] team0: Port device team_slave_0 added [ 35.891967] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.899558] team0: Port device team_slave_1 added [ 35.914568] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.920798] 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. [ 35.946023] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.957359] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.963584] 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. [ 35.988807] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.999431] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 36.007070] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 36.026529] device hsr_slave_0 entered promiscuous mode [ 36.032197] device hsr_slave_1 entered promiscuous mode [ 36.038521] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 36.045697] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 36.107778] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.114228] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.120923] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.127319] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.158504] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 36.166359] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.174449] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.182531] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.191409] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.198601] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.205953] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 36.216854] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 36.222907] 8021q: adding VLAN 0 to HW filter on device team0 [ 36.232873] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 36.240836] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.247226] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.257161] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 36.265320] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.271646] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.286397] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.294653] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 36.304956] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.318275] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 36.328605] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 36.339270] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 36.346213] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 36.354344] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 36.361782] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 36.373826] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 36.381425] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 36.388768] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 36.399012] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 36.411638] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 36.421120] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 36.451133] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 36.458501] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 36.465671] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 36.475599] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 36.483061] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 36.490713] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 36.499971] device veth0_vlan entered promiscuous mode [ 36.509359] device veth1_vlan entered promiscuous mode [ 36.515494] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 36.523737] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 36.534884] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 36.544149] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 36.551424] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 36.559612] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 36.568805] device veth0_macvtap entered promiscuous mode [ 36.575917] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 36.584294] device veth1_macvtap entered promiscuous mode [ 36.592423] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 36.602456] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 36.613582] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 36.620278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 36.629412] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 36.639118] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 36.646065] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 36.734021] ------------[ cut here ]------------ [ 36.738851] HSR: VLAN not yet supported [ 36.739198] WARNING: CPU: 0 PID: 8114 at net/hsr/hsr_forward.c:336 hsr_forward_skb+0x177e/0x1c30 [ 36.752059] Kernel panic - not syncing: panic_on_warn set ... [ 36.752059] [ 36.759406] CPU: 0 PID: 8114 Comm: syz-executor824 Not tainted 4.19.211-syzkaller #0 [ 36.767261] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.776591] Call Trace: [ 36.779165] dump_stack+0x1fc/0x2ef [ 36.782774] panic+0x26a/0x50e [ 36.785954] ? __warn_printk+0xf3/0xf3 [ 36.789828] ? hsr_forward_skb+0x177e/0x1c30 [ 36.794215] ? __probe_kernel_read+0x130/0x1b0 [ 36.798774] ? __warn.cold+0x5/0x5a [ 36.802387] ? __warn+0xe4/0x200 [ 36.805737] ? hsr_forward_skb+0x177e/0x1c30 [ 36.810123] __warn.cold+0x20/0x5a [ 36.813650] ? kvm_sched_clock_read+0x14/0x40 [ 36.818136] ? hsr_forward_skb+0x177e/0x1c30 [ 36.822522] report_bug+0x262/0x2b0 [ 36.826131] do_error_trap+0x1d7/0x310 [ 36.829998] ? math_error+0x310/0x310 [ 36.833788] ? vprintk_store+0x1f0/0x410 [ 36.837840] ? vprintk_emit+0x22d/0x740 [ 36.841798] ? error_entry+0x72/0xd0 [ 36.845503] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.850501] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.855328] invalid_op+0x14/0x20 [ 36.858761] RIP: 0010:hsr_forward_skb+0x177e/0x1c30 [ 36.863754] 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 [ 36.882649] RSP: 0018:ffff8880950877e0 EFLAGS: 00010286 [ 36.888061] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 36.895316] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012a10eee [ 36.902569] RBP: ffff8880a282f2c0 R08: 0000000000000000 R09: 000000000000072f [ 36.909818] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8880a282f386 [ 36.917070] R13: ffff888098832680 R14: ffff8880af2d15ce R15: ffff8880af2d15c2 [ 36.924340] ? vprintk_func+0x81/0x180 [ 36.928225] ? rcu_is_watching+0x53/0xc0 [ 36.932270] ? check_preemption_disabled+0x41/0x280 [ 36.937303] hsr_dev_xmit+0x6b/0xa0 [ 36.940916] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.945913] dev_hard_start_xmit+0x1a8/0x920 [ 36.950308] __dev_queue_xmit+0x269d/0x2e00 [ 36.954625] ? sock_alloc_send_pskb+0x609/0x830 [ 36.959276] ? mark_held_locks+0xf0/0xf0 [ 36.963323] ? netdev_pick_tx+0x2f0/0x2f0 [ 36.967454] ? mark_held_locks+0xf0/0xf0 [ 36.971506] ? sock_kzfree_s+0x60/0x60 [ 36.975374] ? lock_downgrade+0x720/0x720 [ 36.979499] ? lock_acquire+0x170/0x3c0 [ 36.983450] ? netif_device_attach+0x1c0/0x1c0 [ 36.988008] ? skb_copy_datagram_from_iter+0x45f/0x680 [ 36.993281] ? memcpy+0x35/0x50 [ 36.996554] packet_sendmsg+0x25ae/0x7720 [ 37.000693] ? aa_sk_perm+0x534/0x930 [ 37.004474] ? compat_packet_setsockopt+0x160/0x160 [ 37.009468] ? aa_af_perm+0x230/0x230 [ 37.013267] ? compat_packet_setsockopt+0x160/0x160 [ 37.018274] sock_sendmsg+0xc3/0x120 [ 37.021967] __sys_sendto+0x21a/0x320 [ 37.025745] ? __ia32_sys_getpeername+0xb0/0xb0 [ 37.030400] ? lock_downgrade+0x720/0x720 [ 37.034535] ? up_read+0x17/0x110 [ 37.037970] ? __do_page_fault+0x180/0xd60 [ 37.042185] __x64_sys_sendto+0xdd/0x1b0 [ 37.046227] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 37.050790] do_syscall_64+0xf9/0x620 [ 37.054574] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.059741] RIP: 0033:0x7ff234a8d389 [ 37.063434] 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 [ 37.082312] RSP: 002b:00007ffe1fe5e488 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 37.089998] RAX: ffffffffffffffda RBX: 00007ffe1fe5e4a8 RCX: 00007ff234a8d389 [ 37.097244] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 37.104492] RBP: 0000000000000003 R08: 0000000020000080 R09: 0000000000000014 [ 37.111740] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe1fe5e4b0 [ 37.118990] R13: 00007ffe1fe5e4d0 R14: 0000000000000000 R15: 0000000000000000 [ 37.126422] Kernel Offset: disabled [ 37.130085] Rebooting in 86400 seconds..