skbuff: skb_over_panic: text:ffffffff864c860d len:232 put:72 head:ffff88809f3e1080 data:ffff88809f3e1080 tail:0xe8 end:0xc0 dev: IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready batman_adv: batadv0: Interface activated: batadv_slave_0 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:104! IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 9372 Comm: syz-executor851 Not tainted 4.14.216-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809f43e080 task.stack: ffff88809ff68000 RIP: 0010:skb_panic+0x172/0x174 net/core/skbuff.c:104 RSP: 0000:ffff88809ff6f1c8 EFLAGS: 00010282 RAX: 0000000000000086 RBX: ffff88809f380300 RCX: 0000000000000000 IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready RDX: 0000000000000000 RSI: ffffffff878bbb40 RDI: ffffed1013fede2f RBP: ffffffff885550a0 R08: 0000000000000086 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff864c860d R13: 0000000000000048 R14: ffffffff88554900 R15: 00000000000000c0 FS: 00007fe156a57700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe9f709ff8 CR3: 000000009fd65000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready skb_over_panic net/core/skbuff.c:109 [inline] skb_put.cold+0x24/0x24 net/core/skbuff.c:1699 dump_esp_combs net/key/af_key.c:3010 [inline] pfkey_send_acquire+0x161d/0x2360 net/key/af_key.c:3231 km_query+0xa9/0x1b0 net/xfrm/xfrm_state.c:1982 xfrm_state_find+0x1847/0x27c0 net/xfrm/xfrm_state.c:1026 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 xfrm_lookup+0x1ee/0x1790 net/xfrm/xfrm_policy.c:2035 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 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x326/0x800 net/socket.c:2062 __sys_sendmmsg+0x129/0x330 net/socket.c:2152 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: 0033:0x44d7e9 RSP: 002b:00007fe156a56ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00000000006e3c88 RCX: 000000000044d7e9 RDX: 000000000800001d RSI: 0000000020007fc0 RDI: 0000000000000004 RBP: 00000000006e3c80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006e3c8c R13: 00007fff6be9cf9f R14: 00007fe156a579c0 R15: 0000000000000001 Code: 8b 4c 24 10 8b 8b 80 00 00 00 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 40 49 55 88 ff 74 24 10 ff 74 24 20 e8 90 73 e4 ff <0f> 0b e8 b5 3b 3a fa 4c 8b 64 24 18 e8 bb 9f 63 fa 48 c7 c1 60 RIP: skb_panic+0x172/0x174 net/core/skbuff.c:104 RSP: ffff88809ff6f1c8 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 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 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 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 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 ---[ end trace 3fca837291191cba ]--- batman_adv: batadv0: Interface activated: batadv_slave_1