------------[ cut here ]------------
WARNING: CPU: 0 PID: 10158 at net/core/dev.c:3272 skb_checksum_help+0x4b1/0x610 net/core/dev.c:3272
Modules linked in:
CPU: 0 PID: 10158 Comm: syz-executor.4 Not tainted 6.0.0-rc3-syzkaller-00007-gdcf8e5633e2e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:skb_checksum_help+0x4b1/0x610 net/core/dev.c:3272
Code: 41 5f c3 e8 61 7e 27 fa 45 89 ec e9 55 ff ff ff e8 54 7e 27 fa 48 89 ef 41 bc ea ff ff ff e8 26 f9 ff ff eb c7 e8 3f 7e 27 fa <0f> 0b 0f b6 1d 37 06 75 06 31 ff 89 de e8 ad 7a 27 fa 84 db 0f 84
RSP: 0018:ffffc9000b50f298 EFLAGS: 00010206
RAX: 000000000001fd70 RBX: 00000000000000c2 RCX: ffffc9000bcab000
RDX: 0000000000040000 RSI: ffffffff87548bf1 RDI: 0000000000000004
RBP: ffff888036fbfdc0 R08: 0000000000000004 R09: 000000000000008a
R10: 0000000000000098 R11: 0000000000000000 R12: ffff888036fbfe34
R13: 00000000000003b1 R14: ffff888036fbfe40 R15: 0000000000000098
FS:  00007f9de6cba700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003000 CR3: 000000001d675000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ip6_fragment+0x1978/0x2770 net/ipv6/ip6_output.c:883
 ip6_finish_output_gso_slowpath_drop net/ipv6/ip6_output.c:164 [inline]
 __ip6_finish_output net/ipv6/ip6_output.c:188 [inline]
 ip6_finish_output+0xec8/0x1160 net/ipv6/ip6_output.c:206
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip6_output+0x1ed/0x540 net/ipv6/ip6_output.c:227
 dst_output include/net/dst.h:451 [inline]
 ip6_local_out+0xaf/0x1a0 net/ipv6/output_core.c:161
 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
 udp_tunnel6_xmit_skb+0x73c/0xbd0 net/ipv6/ip6_udp_tunnel.c:109
 geneve6_xmit_skb drivers/net/geneve.c:1079 [inline]
 geneve_xmit+0x9ec/0x4910 drivers/net/geneve.c:1108
 __netdev_start_xmit include/linux/netdevice.h:4819 [inline]
 netdev_start_xmit include/linux/netdevice.h:4833 [inline]
 xmit_one net/core/dev.c:3590 [inline]
 dev_hard_start_xmit+0x183/0x880 net/core/dev.c:3606
 __dev_queue_xmit+0x2c31/0x3ad0 net/core/dev.c:4256
 packet_snd net/packet/af_packet.c:3073 [inline]
 packet_sendmsg+0x3354/0x5500 net/packet/af_packet.c:3104
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 __sys_sendto+0x236/0x340 net/socket.c:2117
 __do_sys_sendto net/socket.c:2129 [inline]
 __se_sys_sendto net/socket.c:2125 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2125
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9de5a89279
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9de6cba168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f9de5b9bf80 RCX: 00007f9de5a89279
RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00007f9de5ae32e9 R08: 0000000000000000 R09: 00000000000002ff
R10: 0000000004000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd01828def R14: 00007f9de6cba300 R15: 0000000000022000
 </TASK>