------------[ cut here ]------------
WARNING: CPU: 3 PID: 5360 at net/mptcp/protocol.c:1003 __mptcp_clean_una+0x8b6/0xd30 net/mptcp/protocol.c:1003
Modules linked in:
CPU: 3 PID: 5360 Comm: kworker/3:4 Not tainted 6.9.0-rc3-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events mptcp_worker
RIP: 0010:__mptcp_clean_una+0x8b6/0xd30 net/mptcp/protocol.c:1003
Code: e7 48 89 de e8 eb 19 d2 f6 49 39 dc 0f 84 20 fc ff ff e8 8d 1f d2 f6 48 89 ef e8 c5 d3 fe ff e9 0e fc ff ff e8 7b 1f d2 f6 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 28 48 c1 ea 03
RSP: 0018:ffffc90003da7a58 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88803d630000 RCX: ffffffff8abb4d9e
RDX: ffff88802a7d2440 RSI: ffffffff8abb5415 RDI: 0000000000000001
RBP: ffff88802f61c500 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: ffff88803d638000
R13: dffffc0000000000 R14: ffff88802f61cea8 R15: 0000000000000106
FS:  0000000000000000(0000) GS:ffff88806b500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30925000 CR3: 000000001d4c4000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __mptcp_clean_una_wakeup+0x60/0x300 net/mptcp/protocol.c:1053
 mptcp_clean_una_wakeup net/mptcp/protocol.c:1060 [inline]
 __mptcp_retrans+0xf9/0xcc0 net/mptcp/protocol.c:2611
 mptcp_worker+0x895/0x1120 net/mptcp/protocol.c:2763
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>