syzbot

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WARNING: CPU: 0 PID: 10766 at net/ipv4/udp_offload.c:118 udp_tunnel_update_gro_rcv+0x31d/0x670 net/ipv4/udp_offload.c:118
Modules linked in:
CPU: 0 UID: 0 PID: 10766 Comm: syz.2.1543 Not tainted 6.14.0-rc6-syzkaller-01366-g6855b9be9cf7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:udp_tunnel_update_gro_rcv+0x31d/0x670 net/ipv4/udp_offload.c:118
Code: 23 48 89 eb e8 f4 35 4f f7 c7 05 aa b8 32 10 01 00 00 00 31 ed 45 31 ed e9 80 01 00 00 e8 db 35 4f f7 eb 40 e8 d4 35 4f f7 90 <0f> 0b 90 e9 5a 02 00 00 e8 c6 35 4f f7 eb 2b e8 bf 35 4f f7 eb 24
RSP: 0018:ffffc9000c317c50 EFLAGS: 00010293
RAX: ffffffff8a72bc2e RBX: 1ffff1100b7603ff RCX: ffff888057219e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 1ffff1100b7603ff R08: ffffffff8a72b745 R09: 1ffffffff207a40e
R10: dffffc0000000000 R11: fffffbfff207a40f R12: dffffc0000000000
R13: 0000000000000001 R14: ffff88805bb01ff8 R15: 0000000000000000
FS:  00005555579f0500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000280 CR3: 000000007c116000 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:220 [inline]
 udpv6_destroy_sock+0x230/0x2a0 net/ipv6/udp.c:1829
 sk_common_release+0x71/0x2e0 net/core/sock.c:3896
 inet_release+0x17d/0x200 net/ipv4/af_inet.c:435
 __sock_release net/socket.c:647 [inline]
 sock_close+0xbc/0x240 net/socket.c:1389
 __fput+0x3e9/0x9f0 fs/file_table.c:464
 task_work_run+0x24f/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/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f442ad8d169
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:00007ffd270e8a88 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000037bfc RCX: 00007f442ad8d169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f442afa7ba0 R08: 0000000000000001 R09: 0000000a270e8d7f
R10: 00007f442ac00000 R11: 0000000000000246 R12: 00007f442afa5fac
R13: 00007f442afa5fa0 R14: ffffffffffffffff R15: 00007ffd270e8ba0
 </TASK>