Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.48' (ECDSA) to the list of known hosts. syzkaller login: [ 28.884555] IPVS: ftp: loaded support on port[0] = 21 [ 28.949311] chnl_net:caif_netlink_parms(): no params data found [ 29.021707] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.028531] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.036199] device bridge_slave_0 entered promiscuous mode [ 29.042842] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.049280] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.056550] device bridge_slave_1 entered promiscuous mode [ 29.072275] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 29.080847] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 29.103564] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 29.111033] team0: Port device team_slave_0 added [ 29.117197] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 29.124198] team0: Port device team_slave_1 added [ 29.138824] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 29.145217] 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. [ 29.170979] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 29.182497] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 29.189448] 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. [ 29.215130] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 29.225592] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 29.232809] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 29.250975] device hsr_slave_0 entered promiscuous mode [ 29.256578] device hsr_slave_1 entered promiscuous mode [ 29.262376] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 29.270039] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 29.327524] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.333922] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.340734] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.347133] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.373175] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 29.380026] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.388525] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 29.397966] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.416192] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.423124] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.432698] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 29.438986] 8021q: adding VLAN 0 to HW filter on device team0 [ 29.447546] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.455390] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.461732] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.480783] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 29.490678] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 29.501797] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 29.508904] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.516877] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.523264] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.531137] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 29.538911] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 29.546652] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.554143] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.561711] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 29.568502] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 29.580151] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 29.590433] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 29.597341] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 29.603961] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 29.651117] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 29.660584] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.686106] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 29.692930] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 29.700067] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 29.709249] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.716758] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.723549] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.732175] device veth0_vlan entered promiscuous mode [ 29.741245] device veth1_vlan entered promiscuous mode [ 29.747440] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 29.756368] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 29.766939] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 29.776287] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 29.783375] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 29.790876] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.800103] device veth0_macvtap entered promiscuous mode [ 29.806329] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 29.813838] device veth1_macvtap entered promiscuous mode [ 29.822416] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 29.831649] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 29.841646] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 29.848855] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.856998] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 29.866653] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 29.874261] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 29.934744] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.077007] hsr_addr_subst_dest: Unknown node [ 30.081782] ------------[ cut here ]------------ [ 30.086527] WARNING: CPU: 1 PID: 8263 at net/hsr/hsr_framereg.c:313 hsr_addr_subst_dest.cold+0x45/0x4c [ 30.095954] Kernel panic - not syncing: panic_on_warn set ... [ 30.095954] [ 30.103293] CPU: 1 PID: 8263 Comm: syz-executor869 Not tainted 4.14.216-syzkaller #0 [ 30.111172] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.120502] Call Trace: [ 30.123072] dump_stack+0x1b2/0x281 [ 30.126684] panic+0x1f9/0x42d [ 30.129852] ? add_taint.cold+0x16/0x16 [ 30.133803] ? hsr_addr_subst_dest.cold+0x45/0x4c [ 30.138623] ? hsr_addr_subst_dest.cold+0x45/0x4c [ 30.143441] __warn.cold+0x20/0x44 [ 30.146959] ? ist_end_non_atomic+0x10/0x10 [ 30.151258] ? hsr_addr_subst_dest.cold+0x45/0x4c [ 30.156079] report_bug+0x208/0x250 [ 30.159692] do_error_trap+0x195/0x2d0 [ 30.163558] ? math_error+0x2d0/0x2d0 [ 30.167344] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.172166] invalid_op+0x1b/0x40 [ 30.175597] RIP: 0010:hsr_addr_subst_dest.cold+0x45/0x4c [ 30.181026] RSP: 0018:ffff8880afb4f6d8 EFLAGS: 00010286 [ 30.186468] RAX: 0000000000000021 RBX: dffffc0000000000 RCX: 0000000000000000 [ 30.193731] RDX: 0000000000000000 RSI: ffffffff878bbb40 RDI: ffffed1015f69ed1 [ 30.200983] RBP: ffff88809e573cc2 R08: 0000000000000021 R09: 0000000000000000 [ 30.208238] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000f5ff2c00 [ 30.215488] R13: ffff8880b3bff360 R14: ffff8880b3bff360 R15: 000000000000017b [ 30.222754] ? hsr_addr_subst_dest.cold+0x45/0x4c [ 30.227579] hsr_forward_skb+0x103d/0x19c0 [ 30.231800] hsr_dev_xmit+0x6b/0xa0 [ 30.235412] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.240411] dev_hard_start_xmit+0x188/0x890 [ 30.244806] __dev_queue_xmit+0x1d7f/0x2480 [ 30.249115] ? netdev_pick_tx+0x2e0/0x2e0 [ 30.253255] ? skb_copy_datagram_from_iter+0x3c1/0x5f0 [ 30.258532] ? skb_partial_csum_set+0x1e2/0x260 [ 30.263181] packet_snd+0x1393/0x21e0 [ 30.266965] ? prb_retire_rx_blk_timer_expired+0x630/0x630 [ 30.272583] ? __lock_acquire+0x5fc/0x3f20 [ 30.276794] ? __lock_acquire+0x5fc/0x3f20 [ 30.281007] packet_sendmsg+0x1139/0x2ad0 [ 30.285140] ? trace_hardirqs_on+0x10/0x10 [ 30.289352] ? trace_hardirqs_on+0x10/0x10 [ 30.293564] ? trace_hardirqs_on+0x10/0x10 [ 30.297774] ? trace_hardirqs_on+0x10/0x10 [ 30.301986] ? reacquire_held_locks+0xb5/0x3f0 [ 30.306545] ? compat_packet_setsockopt+0x140/0x140 [ 30.311538] ? __register_prot_hook.part.0+0x115/0x150 [ 30.316792] ? packet_do_bind+0x3df/0xaf0 [ 30.320918] ? security_socket_sendmsg+0x83/0xb0 [ 30.325649] ? compat_packet_setsockopt+0x140/0x140 [ 30.330645] sock_sendmsg+0xb5/0x100 [ 30.334338] SyS_sendto+0x1c7/0x2c0 [ 30.337945] ? SyS_getpeername+0x220/0x220 [ 30.342163] ? SyS_socketpair+0x480/0x480 [ 30.346292] ? move_addr_to_kernel+0x60/0x60 [ 30.350676] ? __do_page_fault+0x159/0xad0 [ 30.354904] ? do_syscall_64+0x4c/0x640 [ 30.358855] ? SyS_getpeername+0x220/0x220 [ 30.363066] do_syscall_64+0x1d5/0x640 [ 30.366934] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.372100] RIP: 0033:0x443fd9 [ 30.375267] RSP: 002b:00007ffd4abb9768 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 30.382953] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443fd9 [ 30.390201] RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000003 [ 30.397460] RBP: 00007ffd4abb9780 R08: 0000000000000000 R09: 00000000000002ff [ 30.404707] R10: 0000000004000002 R11: 0000000000000246 R12: 0000000000007590 [ 30.411954] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.419920] Kernel Offset: disabled [ 30.423581] Rebooting in 86400 seconds..