syzbot

IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
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kernel BUG at include/linux/skbuff.h:2150!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 7992 Comm: syz-executor219 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
task: ffff8880987e0240 task.stack: ffff888095a48000
RIP: 0010:__skb_pull include/linux/skbuff.h:2150 [inline]
RIP: 0010:skb_pull_inline include/linux/skbuff.h:2156 [inline]
RIP: 0010:skb_pull net/core/skbuff.c:1745 [inline]
RIP: 0010:skb_pull+0xe1/0x100 net/core/skbuff.c:1743
RSP: 0018:ffff888095a4f5d8 EFLAGS: 00010297
RAX: ffff8880987e0240 RBX: ffff8880aabcd200 RCX: 00000000000000a0
RDX: 0000000000000000 RSI: 0000000000000018 RDI: ffff8880aabcd284
RBP: 0000000000000018 R08: ffffffff85c49f9c R09: 00000000000202b3
R10: ffff8880987e0ac8 R11: ffff8880987e0240 R12: 0000000000001fde
R13: ffff8880aabcd2d8 R14: ffff8880aabcd2d0 R15: ffff8880abe2e0a0
FS:  0000555555a8a300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 00000000a633e000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ipgre_xmit+0x26f/0x780 net/ipv4/ip_gre.c:658
 __netdev_start_xmit include/linux/netdevice.h:4054 [inline]
 netdev_start_xmit include/linux/netdevice.h:4063 [inline]
 xmit_one net/core/dev.c:3005 [inline]
 dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021
 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521
 packet_snd+0x13aa/0x26f0 net/packet/af_packet.c:3032
 packet_sendmsg+0x12ed/0x33a0 net/packet/af_packet.c:3061
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
Code: 00 00 4c 89 a3 d8 00 00 00 e8 2c 0e 96 fb 4c 89 e0 5b 5d 41 5c c3 e8 1f 0e 96 fb 45 31 e4 5b 4c 89 e0 5d 41 5c c3 e8 0f 0e 96 fb <0f> 0b e8 58 cb bf fb e9 49 ff ff ff e8 4e cb bf fb eb 8e e8 b7 
RIP: __skb_pull include/linux/skbuff.h:2150 [inline] RSP: ffff888095a4f5d8
RIP: skb_pull_inline include/linux/skbuff.h:2156 [inline] RSP: ffff888095a4f5d8
RIP: skb_pull net/core/skbuff.c:1745 [inline] RSP: ffff888095a4f5d8
RIP: skb_pull+0xe1/0x100 net/core/skbuff.c:1743 RSP: ffff888095a4f5d8
---[ end trace a05b3feafcd2d0df ]---