------------[ cut here ]------------
kernel BUG at net/core/dev.c:2873!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 6167 Comm: syz.6.1569 Tainted: G        W         5.4.290-syzkaller-00017-g6b07fcd94a6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:skb_checksum_help+0x873/0x880 net/core/dev.c:2873
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c d0 fc ff ff 48 89 df e8 ae 9d 14 fe e9 c3 fc ff ff e8 84 b3 e4 fd 0f 0b e8 7d b3 e4 fd <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53
RSP: 0018:ffff8881d605eec8 EFLAGS: 00010283
RAX: ffffffff837f9783 RBX: 000000000000297d RCX: 0000000000080000
RDX: ffffc9000aef2000 RSI: 0000000000000d60 RDI: 0000000000000d61
RBP: 0000000000003528 R08: ffffffff837f91ff R09: ffffed103ac0bdca
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f54c27f0
R13: 0000000000003526 R14: ffff8881f54c2780 R15: 1ffff1103ea984fe
FS:  00007fe4975796c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000040000000d000 CR3: 00000001f0670000 CR4: 00000000003426b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ip_do_fragment+0x15e/0x2200 net/ipv4/ip_output.c:789
 NF_HOOK_COND include/linux/netfilter.h:292 [inline]
 ip_output+0x19b/0x3a0 net/ipv4/ip_output.c:440
 iptunnel_xmit+0x476/0x850 net/ipv4/ip_tunnel_core.c:78
 ip_tunnel_xmit+0x1ac0/0x2690 net/ipv4/ip_tunnel.c:831
 __gre_xmit net/ipv4/ip_gre.c:465 [inline]
 ipgre_xmit+0x79f/0xb30 net/ipv4/ip_gre.c:660
 __netdev_start_xmit include/linux/netdevice.h:4538 [inline]
 netdev_start_xmit include/linux/netdevice.h:4552 [inline]
 xmit_one net/core/dev.c:3221 [inline]
 dev_hard_start_xmit+0x1b7/0x6b0 net/core/dev.c:3237
 __dev_queue_xmit+0x138c/0x2790 net/core/dev.c:3821
 packet_snd net/packet/af_packet.c:3060 [inline]
 packet_sendmsg+0x4747/0x6100 net/packet/af_packet.c:3089
 sock_sendmsg_nosec net/socket.c:638 [inline]
 __sock_sendmsg net/socket.c:650 [inline]
 ____sys_sendmsg+0x5ac/0x8f0 net/socket.c:2306
 ___sys_sendmsg net/socket.c:2360 [inline]
 __sys_sendmsg+0x28b/0x380 net/socket.c:2406
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fe498f0f169
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:00007fe497579038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe499127fa0 RCX: 00007fe498f0f169
RDX: 0000000000000010 RSI: 0000400000002ac0 RDI: 0000000000000003
RBP: 00007fe498f902a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe499127fa0 R15: 00007ffced5ed238
Modules linked in:
---[ end trace ecb6972f4fd38ecb ]---
RIP: 0010:skb_checksum_help+0x873/0x880 net/core/dev.c:2873
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c d0 fc ff ff 48 89 df e8 ae 9d 14 fe e9 c3 fc ff ff e8 84 b3 e4 fd 0f 0b e8 7d b3 e4 fd <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53
RSP: 0018:ffff8881d605eec8 EFLAGS: 00010283
RAX: ffffffff837f9783 RBX: 000000000000297d RCX: 0000000000080000
RDX: ffffc9000aef2000 RSI: 0000000000000d60 RDI: 0000000000000d61
RBP: 0000000000003528 R08: ffffffff837f91ff R09: ffffed103ac0bdca
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f54c27f0
R13: 0000000000003526 R14: ffff8881f54c2780 R15: 1ffff1103ea984fe
FS:  00007fe4975796c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000040000000d000 CR3: 00000001f0670000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400