Warning: Permanently added '10.128.1.60' (ECDSA) to the list of known hosts. syzkaller login: [ 44.278176] audit: type=1400 audit(1597802838.099:8): avc: denied { execmem } for pid=6465 comm="syz-executor760" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 44.301561] IPVS: ftp: loaded support on port[0] = 21 [ 44.384505] chnl_net:caif_netlink_parms(): no params data found [ 44.503787] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.510832] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.517937] device bridge_slave_0 entered promiscuous mode [ 44.525919] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.532752] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.540166] device bridge_slave_1 entered promiscuous mode [ 44.557330] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 44.566211] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 44.584629] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 44.592120] team0: Port device team_slave_0 added [ 44.597638] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 44.605333] team0: Port device team_slave_1 added [ 44.621133] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 44.627385] 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. [ 44.653834] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 44.665523] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 44.671860] 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. [ 44.698584] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 44.710342] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 44.717781] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 44.739138] device hsr_slave_0 entered promiscuous mode [ 44.744868] device hsr_slave_1 entered promiscuous mode [ 44.752182] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 44.759732] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 44.826204] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.832647] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.839643] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.846011] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.882685] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 44.889331] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.897357] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 44.908783] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.916871] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.937198] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.944856] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 44.957230] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 44.963792] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.973357] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.981581] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.987919] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.998428] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 45.006143] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.012601] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.027348] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 45.036673] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 45.047646] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 45.059843] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 45.071445] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 45.081902] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 45.087912] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 45.096339] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 45.110493] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 45.117765] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 45.124959] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 45.134975] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 45.146861] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 45.157518] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 45.194751] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 45.202272] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 45.209418] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 45.219413] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 45.226938] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 45.234100] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 45.243227] device veth0_vlan entered promiscuous mode [ 45.253013] device veth1_vlan entered promiscuous mode [ 45.259488] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 45.268765] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 45.280795] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 45.291604] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 45.299169] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 45.306568] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 45.317375] device veth0_macvtap entered promiscuous mode [ 45.324321] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 45.334798] device veth1_macvtap entered promiscuous mode [ 45.344962] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 45.354836] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 45.366150] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 45.373688] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 45.382568] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 45.393329] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 45.400452] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 45.407013] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 45.415040] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 45.671374] divide error: 0000 [#1] PREEMPT SMP KASAN [ 45.676605] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 4.19.139-syzkaller #0 [ 45.683868] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.693224] Workqueue: ipv6_addrconf addrconf_dad_work [ 45.698505] RIP: 0010:tabledist.part.0+0x22a/0x2a0 [ 45.703426] Code: 4c 01 f0 48 c1 e8 20 41 89 45 00 41 89 c6 e8 1d 9e 91 fb 48 85 db 0f 85 6d fe ff ff e8 0f 9e 91 fb 8d 4c 2d 00 44 89 f0 31 d2 f1 49 29 ec 49 01 d4 e9 2b ff ff ff e8 f4 9d 91 fb 48 81 eb 00 [ 45.722327] RSP: 0018:ffff8880a9ededa0 EFLAGS: 00010246 [ 45.727700] RAX: 000000004113bdaf RBX: 0000000000000000 RCX: 0000000000000000 [ 45.734962] RDX: 0000000000000000 RSI: ffffffff85d811b1 RDI: 0000000000000005 [ 45.742226] RBP: ffffffff80000000 R08: 0000000000000000 R09: 0000000000000000 [ 45.749493] R10: 0000000000000005 R11: 000000000013a1a1 R12: 0000000000000000 [ 45.756761] R13: ffff8880893d952c R14: 000000004113bdaf R15: 0000000000000000 [ 45.765255] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 45.773486] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.780493] CR2: 000055601e937270 CR3: 0000000093e79000 CR4: 00000000001406f0 [ 45.787759] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.795046] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.802314] Call Trace: [ 45.804908] netem_enqueue+0x453/0x3167 [ 45.808883] ? netem_dequeue+0xd90/0xd90 [ 45.812940] ? __dev_queue_xmit+0x134e/0x2e00 [ 45.817435] __dev_queue_xmit+0x140a/0x2e00 [ 45.821773] ? netdev_pick_tx+0x2f0/0x2f0 [ 45.825926] ? mark_held_locks+0xa6/0xf0 [ 45.829992] ? mark_held_locks+0xa6/0xf0 [ 45.834050] ? ip_finish_output2+0xfbc/0x1540 [ 45.838551] ip_finish_output2+0xb6d/0x1540 [ 45.842876] ? ip_send_check+0xb0/0xb0 [ 45.846766] ip_finish_output+0x84d/0xcd0 [ 45.850915] ip_output+0x203/0x5f0 [ 45.854454] ? ip_mc_output+0xec0/0xec0 [ 45.858430] ? ip_fragment.constprop.0+0x240/0x240 [ 45.863360] ? prandom_u32+0x79/0xb0 [ 45.867076] ip_local_out+0xaf/0x170 [ 45.870802] iptunnel_xmit+0x63b/0x9d0 [ 45.874685] ? ipgre_netlink_parms.constprop.0+0x450/0xd50 [ 45.880315] geneve_xmit+0xdcf/0x28b0 [ 45.884118] ? netif_device_attach+0x12b/0x1c0 [ 45.888719] ? geneve_fill_metadata_dst+0xca0/0xca0 [ 45.893747] ? __lock_acquire+0x6de/0x3ff0 [ 45.897986] ? netif_skb_features+0x5c1/0xb30 [ 45.902486] ? check_preemption_disabled+0x41/0x280 [ 45.907532] dev_hard_start_xmit+0x1a8/0x920 [ 45.911946] __dev_queue_xmit+0x269d/0x2e00 [ 45.916265] ? netdev_pick_tx+0x2f0/0x2f0 [ 45.920415] ? ip6_finish_output2+0x113d/0x2290 [ 45.925082] ? memcpy+0x35/0x50 [ 45.928362] neigh_resolve_output+0x55a/0x910 [ 45.932862] ip6_finish_output2+0x113d/0x2290 [ 45.937358] ? ip6_forward_finish+0x4b0/0x4b0 [ 45.941862] ? lock_downgrade+0x720/0x720 [ 45.946010] ? lock_acquire+0x170/0x3c0 [ 45.949980] ? check_preemption_disabled+0x41/0x280 [ 45.955004] ip6_finish_output+0x7eb/0xc10 [ 45.959241] ip6_output+0x205/0x770 [ 45.962865] ? ip6_finish_output+0xc10/0xc10 [ 45.967997] ? ip6_fragment+0x32a0/0x32a0 [ 45.972141] ? check_preemption_disabled+0x41/0x280 [ 45.977156] ndisc_send_skb+0xa24/0x1720 [ 45.981216] ? ndisc_alloc_skb+0x320/0x320 [ 45.985459] ? ipv6_setsockopt+0x160/0x160 [ 45.989695] ? kmem_cache_alloc_node_trace+0x351/0x3b0 [ 45.994972] ? __alloc_skb+0x34f/0x560 [ 45.998856] ? skb_set_owner_w+0x1fd/0x340 [ 46.003089] ndisc_send_ns+0x51d/0x840 [ 46.006970] ? addrconf_dad_work+0xa48/0x10a0 [ 46.011477] ? pndisc_redo+0x20/0x20 [ 46.015188] ? mark_held_locks+0xa6/0xf0 [ 46.019247] ? __local_bh_enable_ip+0x159/0x270 [ 46.024001] addrconf_dad_work+0xb0e/0x10a0 [ 46.028318] ? addrconf_dad_completed+0xb60/0xb60 [ 46.033161] process_one_work+0x864/0x1570 [ 46.037394] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 46.042157] worker_thread+0x64c/0x1130 [ 46.046130] ? process_one_work+0x1570/0x1570 [ 46.050628] kthread+0x30b/0x410 [ 46.053988] ? kthread_park+0x180/0x180 [ 46.057962] ret_from_fork+0x24/0x30 [ 46.061667] Modules linked in: [ 46.064953] ---[ end trace 634c6d63ba148136 ]--- [ 46.069743] RIP: 0010:tabledist.part.0+0x22a/0x2a0 [ 46.074673] Code: 4c 01 f0 48 c1 e8 20 41 89 45 00 41 89 c6 e8 1d 9e 91 fb 48 85 db 0f 85 6d fe ff ff e8 0f 9e 91 fb 8d 4c 2d 00 44 89 f0 31 d2 f1 49 29 ec 49 01 d4 e9 2b ff ff ff e8 f4 9d 91 fb 48 81 eb 00 [ 46.093827] RSP: 0018:ffff8880a9ededa0 EFLAGS: 00010246 [ 46.099237] RAX: 000000004113bdaf RBX: 0000000000000000 RCX: 0000000000000000 [ 46.106514] RDX: 0000000000000000 RSI: ffffffff85d811b1 RDI: 0000000000000005 [ 46.113847] RBP: ffffffff80000000 R08: 0000000000000000 R09: 0000000000000000 [ 46.121186] R10: 0000000000000005 R11: 000000000013a1a1 R12: 0000000000000000 [ 46.128531] R13: ffff8880893d952c R14: 000000004113bdaf R15: 0000000000000000 [ 46.135912] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 46.144284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.150203] CR2: 000055601e937270 CR3: 0000000093e79000 CR4: 00000000001406f0 [ 46.157523] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.164877] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.172180] Kernel panic - not syncing: Fatal exception in interrupt [ 46.179799] Kernel Offset: disabled [ 46.183420] Rebooting in 86400 seconds..