------------[ cut here ]------------
WARNING: CPU: 1 PID: 7635 at net/ipv4/udp_offload.c:123 udp_tunnel_update_gro_rcv+0x28d/0x4c0 net/ipv4/udp_offload.c:123
Modules linked in:
CPU: 1 UID: 0 PID: 7635 Comm: syz.0.382 Not tainted 6.15.0-rc1-next-20250411-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:udp_tunnel_update_gro_rcv+0x28d/0x4c0 net/ipv4/udp_offload.c:123
Code: 00 00 e8 b6 b3 2c f7 48 c1 e5 04 48 8d b5 60 c0 c8 9a ba 10 00 00 00 4c 89 ff e8 2e ee 96 f7 e9 ce 00 00 00 e8 94 b3 2c f7 90 <0f> 0b 90 e9 de fd ff ff bf 01 00 00 00 89 ee e8 bf b7 2c f7 85 ed
RSP: 0018:ffffc9000b09fc48 EFLAGS: 00010293
RAX: ffffffff8a96c80c RBX: 0000000000000001 RCX: ffff88803576da00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000000 R08: ffffffff8a96c4ee R09: 1ffffffff20c0836
R10: dffffc0000000000 R11: fffffbfff20c0837 R12: ffffffff86e0c410
R13: dffffc0000000000 R14: ffff88807b44fd80 R15: 0000000000000000
FS:  000055558cdfd500(0000) GS:ffff888125080000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2c72f5 CR3: 0000000071f50000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udp_tunnel_cleanup_gro include/net/udp_tunnel.h:205 [inline]
 udpv6_destroy_sock+0x212/0x270 net/ipv6/udp.c:1829
 sk_common_release+0x71/0x2e0 net/core/sock.c:3901
 inet_release+0x17d/0x200 net/ipv4/af_inet.c:435
 __sock_release net/socket.c:647 [inline]
 sock_close+0xbc/0x240 net/socket.c:1391
 __fput+0x3e9/0x9f0 fs/file_table.c:465
 task_work_run+0x251/0x310 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0fc138d169
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:00007ffd39295178 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f0fc15a7ba0 RCX: 00007f0fc138d169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f0fc15a7ba0 R08: 00000000000000c0 R09: 0000000a3929546f
R10: 00007f0fc15a7ac0 R11: 0000000000000246 R12: 000000000004c8c4
R13: 00007f0fc15a6240 R14: ffffffffffffffff R15: 00007ffd39295290
 </TASK>