------------[ cut here ]------------
WARNING: CPU: 0 PID: 11170 at net/core/skbuff.c:1219 __sk_skb_reason_drop net/core/skbuff.c:1216 [inline]
WARNING: CPU: 0 PID: 11170 at net/core/skbuff.c:1219 sk_skb_reason_drop+0x87/0x380 net/core/skbuff.c:1241
Modules linked in:
CPU: 0 UID: 0 PID: 11170 Comm: syz.4.1343 Not tainted 6.13.0-rc1-syzkaller-00373-gc0b8980e6041 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:__sk_skb_reason_drop net/core/skbuff.c:1216 [inline]
RIP: 0010:sk_skb_reason_drop+0x87/0x380 net/core/skbuff.c:1241
Code: 00 00 00 fc ff df 41 8d 9e 00 00 fc ff bf 01 00 fc ff 89 de e8 2a cc 0a f8 81 fb 00 00 fc ff 77 3a 4c 89 e5 e8 da c7 0a f8 90 <0f> 0b 90 eb 5e bf 01 00 00 00 89 ee e8 08 cc 0a f8 85 ed 0f 8e 49
RSP: 0018:ffffc90000007758 EFLAGS: 00010246
RAX: ffffffff8994aa46 RBX: 00000000fffbffea RCX: ffff888064249e00
RDX: 0000000000000100 RSI: 00000000fffbffea RDI: 00000000fffc0001
RBP: dffffc0000000000 R08: ffffffff8994aa36 R09: 1ffff1100f59310c
R10: dffffc0000000000 R11: ffffed100f59310d R12: dffffc0000000000
R13: ffff88807ac98780 R14: 00000000ffffffea R15: 0000000000000000
FS:  00007f8d9ae206c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d9ae1ffb8 CR3: 0000000024554000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 kfree_skb_reason include/linux/skbuff.h:1263 [inline]
 ip_rcv_finish_core+0xfde/0x1b50 net/ipv4/ip_input.c:424
 ip_rcv_finish+0x14a/0x560 net/ipv4/ip_input.c:445
 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
 __netif_receive_skb_one_core net/core/dev.c:5672 [inline]
 __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5785
 process_backlog+0x662/0x15b0 net/core/dev.c:6117
 __napi_poll+0xcb/0x490 net/core/dev.c:6883
 napi_poll net/core/dev.c:6952 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:7074
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554
 do_softirq+0x11b/0x1e0 kernel/softirq.c:455
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
 tun_rx_batched+0x732/0x8f0
 tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2011
 tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2057
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xaeb/0xd30 fs/read_write.c:679
 ksys_write+0x18f/0x2b0 fs/read_write.c:731
 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: 0033:0x7f8d99f7e9cf
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f8d9ae20020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8d9a145fa0 RCX: 00007f8d99f7e9cf
RDX: 000000000000006a RSI: 0000000020000180 RDI: 00000000000000c8
RBP: 00007f8d99ff3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000006a R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f8d9a145fa0 R15: 00007ffc669c5e68
 </TASK>