[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.95' (ECDSA) to the list of known hosts. syzkaller login: [ 39.434713] IPVS: ftp: loaded support on port[0] = 21 [ 39.507595] chnl_net:caif_netlink_parms(): no params data found [ 39.612593] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.619677] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.627528] device bridge_slave_0 entered promiscuous mode [ 39.636067] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.642431] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.650348] device bridge_slave_1 entered promiscuous mode [ 39.667725] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.676883] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.695271] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 39.702653] team0: Port device team_slave_0 added [ 39.708806] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 39.716475] team0: Port device team_slave_1 added [ 39.731845] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 39.738152] 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. [ 39.764487] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 39.776385] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 39.782621] 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. [ 39.808855] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 39.819621] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.827856] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.847328] device hsr_slave_0 entered promiscuous mode [ 39.853050] device hsr_slave_1 entered promiscuous mode [ 39.859879] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.867438] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.931773] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.938234] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.945224] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.951585] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.986496] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 39.992577] 8021q: adding VLAN 0 to HW filter on device bond0 [ 40.001172] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 40.009831] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 40.019349] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.026606] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.034459] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 40.044394] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 40.050459] 8021q: adding VLAN 0 to HW filter on device team0 [ 40.059859] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 40.067641] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.074051] bridge0: port 1(bridge_slave_0) entered forwarding state [ 40.094223] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 40.101856] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.108266] bridge0: port 2(bridge_slave_1) entered forwarding state [ 40.115652] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 40.124045] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 40.131555] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 40.139304] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 40.149014] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 40.158352] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 40.164482] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 40.177270] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 40.185884] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 40.192557] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 40.203624] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 40.216474] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 40.226043] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 40.261048] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 40.268261] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 40.276125] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 40.285831] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 40.294214] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 40.301080] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 40.310264] device veth0_vlan entered promiscuous mode [ 40.319618] device veth1_vlan entered promiscuous mode [ 40.325824] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 40.334850] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 40.347045] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 40.356040] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 40.363629] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 40.370837] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 40.380933] device veth0_macvtap entered promiscuous mode [ 40.388156] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 40.397480] device veth1_macvtap entered promiscuous mode [ 40.406739] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 40.416511] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 40.426415] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 40.435263] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 40.444110] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 40.453295] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 40.463830] 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 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 executing program executing program executing program [ 40.928319] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 40.934106] hsr_slave_1: hsr_addr_subst_dest: Unknown node [ 40.939773] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 40.945469] hsr_slave_1: hsr_addr_subst_dest: Unknown node [ 40.951430] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 40.957235] hsr_slave_1: hsr_addr_subst_dest: Unknown node [ 40.963692] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 40.969380] hsr_slave_1: hsr_addr_subst_dest: Unknown node executing program executing program executing program executing program [ 40.975515] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 40.981238] hsr_slave_1: hsr_addr_subst_dest: Unknown node executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 41.135718] ------------[ cut here ]------------ [ 41.140543] kernel BUG at net/core/dev.c:2917! [ 41.145177] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 41.150532] CPU: 0 PID: 8400 Comm: syz-executor149 Not tainted 4.19.205-syzkaller #0 [ 41.158394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.167740] RIP: 0010:skb_checksum_help+0x851/0x9c0 [ 41.172742] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 84 eb fb ff ff 48 8b 7c 24 20 e8 e9 83 23 fb e9 dc fb ff ff e8 4f af ed fa <0f> 0b 4c 89 ef e8 85 81 23 fb e9 dc f7 ff ff 4c 89 e7 e8 38 83 23 [ 41.191688] RSP: 0018:ffff8880912e6fe8 EFLAGS: 00010293 [ 41.197044] RAX: ffff8880938841c0 RBX: 000000000000015e RCX: ffffffff8674dec7 [ 41.204293] RDX: 0000000000000000 RSI: ffffffff8674e371 RDI: 0000000000000006 [ 41.211542] RBP: ffff8880ab603700 R08: ffff8880912e6f78 R09: 0000000000000160 [ 41.218791] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8880ab603784 [ 41.226041] R13: ffff8880ab603790 R14: 000000000000534d R15: 00000000000000e0 [ 41.233399] FS: 000000000239f300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 41.241626] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.247488] CR2: 0000000020002180 CR3: 0000000094b7b000 CR4: 00000000001406f0 [ 41.254761] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.262011] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.269255] Call Trace: [ 41.271829] skb_csum_hwoffload_help+0x8b/0x130 [ 41.276482] validate_xmit_skb+0x94a/0xd50 [ 41.280699] ? check_preemption_disabled+0x41/0x280 [ 41.285695] __dev_queue_xmit+0x963/0x2e00 [ 41.289914] ? netdev_pick_tx+0x2f0/0x2f0 [ 41.294043] ? ip_finish_output+0xae9/0x10b0 [ 41.298434] ? mark_held_locks+0xa6/0xf0 [ 41.302481] ? ip_finish_output2+0xfbc/0x15a0 [ 41.306970] ip_finish_output2+0xb6d/0x15a0 [ 41.311273] ? ip_send_check+0xb0/0xb0 [ 41.315140] ? ip_output+0x3a5/0x5f0 [ 41.318833] ip_finish_output+0xae9/0x10b0 [ 41.323050] ip_output+0x203/0x5f0 [ 41.326566] ? ip_mc_output+0xec0/0xec0 [ 41.330519] ? ip_fragment.constprop.0+0x240/0x240 [ 41.335435] ? prandom_u32+0x171/0x1f0 [ 41.339303] ip_local_out+0xaf/0x170 [ 41.343000] iptunnel_xmit+0x63b/0x9d0 [ 41.346866] ? prepare_fb_xmit+0x420/0xe30 [ 41.351079] geneve_xmit+0x120d/0x2e60 [ 41.354950] ? geneve_fill_metadata_dst+0x1580/0x1580 [ 41.360143] ? rcu_is_watching+0x53/0xc0 [ 41.364184] ? packet_rcv+0xef/0x1480 [ 41.367966] ? dev_queue_xmit_nit+0x788/0xa20 [ 41.372441] ? rcu_is_watching+0x53/0xc0 [ 41.376482] ? check_preemption_disabled+0x41/0x280 [ 41.381479] dev_hard_start_xmit+0x1a8/0x920 [ 41.385868] sch_direct_xmit+0x2d6/0xf50 [ 41.389905] ? consume_skb+0x120/0x3d0 [ 41.393775] ? cake_enqueue+0x1881/0x33d0 [ 41.397907] ? qdisc_destroy+0x790/0x790 [ 41.401945] ? assoc_array_gc+0x11c0/0x1260 [ 41.406250] __qdisc_run+0x4d0/0x1640 [ 41.410032] __dev_queue_xmit+0x1518/0x2e00 [ 41.414341] ? netdev_pick_tx+0x2f0/0x2f0 [ 41.418470] ? copy_page_from_iter+0x5bd/0x7f0 [ 41.423032] ? skb_copy_datagram_from_iter+0x45f/0x680 [ 41.428292] ? skb_partial_csum_set+0x257/0x2f0 [ 41.432942] packet_sendmsg+0x25ae/0x7720 [ 41.437082] ? mark_held_locks+0xf0/0xf0 [ 41.441127] ? aa_sk_perm+0x534/0x930 [ 41.444906] ? compat_packet_setsockopt+0x160/0x160 [ 41.449902] ? aa_af_perm+0x230/0x230 [ 41.453700] ? packet_do_bind+0x45e/0xc10 [ 41.457829] ? compat_packet_setsockopt+0x160/0x160 [ 41.462824] sock_sendmsg+0xc3/0x120 [ 41.466519] __sys_sendto+0x21a/0x320 [ 41.470308] ? __ia32_sys_getpeername+0xb0/0xb0 [ 41.474980] ? packet_do_bind+0x45e/0xc10 [ 41.479111] ? __sys_bind+0x111/0x250 [ 41.482887] ? __ia32_sys_socketpair+0xf0/0xf0 [ 41.487445] ? __x64_sys_sendmsg+0x159/0x220 [ 41.491833] __x64_sys_sendto+0xdd/0x1b0 [ 41.495878] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 41.500442] do_syscall_64+0xf9/0x620 [ 41.504222] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.509388] RIP: 0033:0x443ab9 [ 41.512568] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 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 [ 41.531455] RSP: 002b:00007ffe17c7b8c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 41.539141] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443ab9 [ 41.546388] RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000003 [ 41.553658] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000002ff [ 41.560914] R10: 0000000004000002 R11: 0000000000000246 R12: 00007ffe17c7b8f0 [ 41.568161] R13: 00000000000f4240 R14: 000000000000a0a2 R15: 00007ffe17c7b8e4 [ 41.575418] Modules linked in: [ 41.578640] ---[ end trace e7257b93f1d4e003 ]--- [ 41.583416] RIP: 0010:skb_checksum_help+0x851/0x9c0 [ 41.588428] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 84 eb fb ff ff 48 8b 7c 24 20 e8 e9 83 23 fb e9 dc fb ff ff e8 4f af ed fa <0f> 0b 4c 89 ef e8 85 81 23 fb e9 dc f7 ff ff 4c 89 e7 e8 38 83 23 [ 41.607429] RSP: 0018:ffff8880912e6fe8 EFLAGS: 00010293 [ 41.612831] RAX: ffff8880938841c0 RBX: 000000000000015e RCX: ffffffff8674dec7 [ 41.620087] RDX: 0000000000000000 RSI: ffffffff8674e371 RDI: 0000000000000006 [ 41.627371] RBP: ffff8880ab603700 R08: ffff8880912e6f78 R09: 0000000000000160 [ 41.634665] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8880ab603784 [ 41.642010] R13: ffff8880ab603790 R14: 000000000000534d R15: 00000000000000e0 [ 41.649336] FS: 000000000239f300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 41.657598] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.663510] CR2: 0000000020002180 CR3: 0000000094b7b000 CR4: 00000000001406f0 [ 41.670777] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.678092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.685425] Kernel panic - not syncing: Fatal exception in interrupt [ 41.693208] Kernel Offset: disabled [ 41.696998] Rebooting in 86400 seconds..