------------[ cut here ]------------
WARNING: CPU: 0 PID: 8 at net/mptcp/protocol.c:1006 __mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1006
Modules linked in:
CPU: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.9.0-syzkaller-08561-g2c1713a8f1c9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events mptcp_worker
RIP: 0010:__mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1006
Code: fa ff ff 48 8b 4c 24 18 80 e1 07 fe c1 38 c1 0f 8c 8e fa ff ff 48 8b 7c 24 18 e8 80 7b 8b f6 e9 7f fa ff ff e8 a6 3c 26 f6 90 <0f> 0b 90 4c 8b 6c 24 40 4d 89 f4 e9 04 f5 ff ff 44 89 f1 80 e1 07
RSP: 0018:ffffc900000d7800 EFLAGS: 00010293
RAX: ffffffff8b6ff52a RBX: ffff88802018ad18 RCX: ffff888016ebda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000d7918 R08: ffffffff8b6fe9ad R09: fffff5200001af1c
R10: dffffc0000000000 R11: fffff5200001af1c R12: 0000000000000000
R13: ffff88802018ad08 R14: dffffc0000000000 R15: ffff88806e050000
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000f000 CR3: 00000000664c0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 __mptcp_clean_una_wakeup+0x7f/0x2d0 net/mptcp/protocol.c:1056
 mptcp_clean_una_wakeup net/mptcp/protocol.c:1063 [inline]
 __mptcp_retrans+0x108/0xe90 net/mptcp/protocol.c:2616
 mptcp_worker+0x9c2/0x11d0 net/mptcp/protocol.c:2768
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>