batman_adv: batadv0: Interface activated: batadv_slave_0 IPv6: ADDRCONF(NETDEV_UP): veth1_virt_wifi: link is not ready skbuff: skb_over_panic: text:ffffffff866ab395 len:232 put:72 head:ffff88809ecad800 data:ffff88809ecad800 tail:0xe8 end:0xc0 dev: IPv6: ADDRCONF(NETDEV_UP): veth1_virt_wifi: link is not ready ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:104! IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 9358 Comm: syz-executor.0 Not tainted 4.14.213-syzkaller #0 IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880ab422080 task.stack: ffff8880975f0000 RIP: 0010:skb_panic+0x172/0x174 net/core/skbuff.c:104 RSP: 0018:ffff8880975f71c8 EFLAGS: 00010282 RAX: 0000000000000086 RBX: ffff88809feeed00 RCX: 0000000000000000 IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready RDX: 0000000000000000 RSI: ffffffff878bbac0 RDI: ffffed1012ebee2f RBP: ffffffff88554c20 R08: 0000000000000086 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff866ab395 R13: 0000000000000048 R14: ffffffff88554480 R15: 00000000000000c0 FS: 00007fe13c9d6700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd879fca70 CR3: 00000000b3aeb000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready skb_over_panic net/core/skbuff.c:109 [inline] skb_put.cold+0x24/0x24 net/core/skbuff.c:1699 skb_put_zero include/linux/skbuff.h:2099 [inline] dump_ah_combs net/key/af_key.c:2966 [inline] pfkey_send_acquire+0x1ab5/0x2360 net/key/af_key.c:3229 km_query+0xa9/0x1b0 net/xfrm/xfrm_state.c:1982 xfrm_state_find+0x1847/0x27c0 net/xfrm/xfrm_state.c:1026 IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:1389 [inline] xfrm_tmpl_resolve net/xfrm/xfrm_policy.c:1433 [inline] xfrm_resolve_and_create_bundle+0x29b/0x2630 net/xfrm/xfrm_policy.c:1725 batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 xfrm_lookup+0x1ee/0x1790 net/xfrm/xfrm_policy.c:2035 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready batman_adv: batadv0: Interface activated: batadv_slave_1 IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready xfrm_lookup_route+0x33/0x1b0 net/xfrm/xfrm_policy.c:2154 ip_route_output_flow+0xf9/0x130 net/ipv4/route.c:2608 udp_sendmsg+0x13b5/0x1c80 net/ipv4/udp.c:1025 IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready device veth0_vlan entered promiscuous mode device veth1_vlan entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762 IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready ___sys_sendmsg+0x326/0x800 net/socket.c:2062 IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready device veth0_macvtap entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready device veth1_macvtap entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready __sys_sendmmsg+0x129/0x330 net/socket.c:2152 IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 SYSC_sendmmsg net/socket.c:2183 [inline] SyS_sendmmsg+0x2f/0x50 net/socket.c:2178 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! RSP: 002b:00007fe13c9d5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e219 RDX: 000000000800001d RSI: 0000000020007fc0 RDI: 0000000000000003 RBP: 000000000119c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034 R13: 00007fff8de95b2f R14: 00007fe13c9d69c0 R15: 000000000119c034 Code: 8b IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready 4c 24 10 8b 8b 80 00 00 00 41 56 45 89 e8 4c 89 e2 41 57 48 batman_adv: batadv0: Interface activated: batadv_slave_0 89 ee 48 c7 c7 c0 44 55 88 ff 74 24 10 ff 74 24 20 e8 d5 3c 6a fb batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 <0f> 0b e8 dd af 7b fb 4c 8b 64 24 18 e8 73 69 a5 fb 48 c7 c1 e0 RIP: skb_panic+0x172/0x174 net/core/skbuff.c:104 RSP: ffff8880975f71c8 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! ---[ end trace f619831bb0e76dc5 ]---