skb frag:     000000a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
skb frag:     000000b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
------------[ cut here ]------------
offset (651) >= skb_headlen() (112)
WARNING: CPU: 0 PID: 9902 at net/core/dev.c:3327 skb_checksum_help+0x5f9/0x730 net/core/dev.c:3326
Modules linked in:
CPU: 0 PID: 9902 Comm: syz.1.1127 Not tainted 6.10.0-syzkaller-04558-g6189fa6faa09 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:skb_checksum_help+0x5f9/0x730 net/core/dev.c:3326
Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 dd 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 60 ae eb 8c 44 89 f6 89 da e8 28 81 d9 f7 90 <0f> 0b 90 90 bb ea ff ff ff e9 65 fd ff ff e8 04 67 17 f8 c6 05 e7
RSP: 0018:ffffc90003006a88 EFLAGS: 00010246
RAX: 44da0f93db78ca00 RBX: 0000000000000070 RCX: 0000000000040000
RDX: ffffc900137be000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 00000000000002c9 R08: ffffffff81587a62 R09: 1ffff92000600cf0
R10: dffffc0000000000 R11: fffff52000600cf1 R12: 1ffff1100d324fc6
R13: dffffc0000000000 R14: 000000000000028b R15: ffff888069927dc0
FS:  00007fa9333426c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020010000 CR3: 0000000079754000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 skb_csum_hwoffload_help net/core/dev.c:3641 [inline]
 validate_xmit_skb+0xc14/0x1120 net/core/dev.c:3684
 __dev_queue_xmit+0x17a4/0x3e90 net/core/dev.c:4415
 dev_queue_xmit include/linux/netdevice.h:3105 [inline]
 neigh_hh_output include/net/neighbour.h:526 [inline]
 neigh_output include/net/neighbour.h:540 [inline]
 ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:235
 iptunnel_xmit+0x540/0x9b0 net/ipv4/ip_tunnel_core.c:82
 udp_tunnel_xmit_skb+0x234/0x350 net/ipv4/udp_tunnel_core.c:172
 geneve_xmit_skb drivers/net/geneve.c:916 [inline]
 geneve_xmit+0x1852/0x2cd0 drivers/net/geneve.c:1039
 __netdev_start_xmit include/linux/netdevice.h:4913 [inline]
 netdev_start_xmit include/linux/netdevice.h:4922 [inline]
 xmit_one net/core/dev.c:3580 [inline]
 dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3596
 __dev_queue_xmit+0x1b63/0x3e90 net/core/dev.c:4423
 packet_snd net/packet/af_packet.c:3145 [inline]
 packet_sendmsg+0x4bc0/0x6710 net/packet/af_packet.c:3177
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
 ___sys_sendmsg net/socket.c:2651 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa932575f19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa933342048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa932705f60 RCX: 00007fa932575f19
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007fa9325e4e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa932705f60 R15: 00007ffce25f4eb8
 </TASK>