------------[ cut here ]------------ WARNING: CPU: 1 PID: 928 at net/mptcp/protocol.c:1003 __mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1003 Modules linked in: CPU: 1 PID: 928 Comm: kworker/1:3 Not tainted 6.9.0-rc7-syzkaller-00188-gba16c1cf11c9 #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:1003 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 e0 6f 92 f6 e9 7f fa ff ff e8 a6 c3 2d 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:ffffc90003d1f800 EFLAGS: 00010293 RAX: ffffffff8b6844da RBX: ffff888029e15f78 RCX: ffff888020c40000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003d1f918 R08: ffffffff8b68395d R09: 1ffffd4000343946 R10: dffffc0000000000 R11: fffff94000343947 R12: 0000000000000000 R13: ffff888029e15f68 R14: dffffc0000000000 R15: ffff88802b998000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8eaafa3d58 CR3: 0000000051000000 CR4: 0000000000350ef0 Call Trace: __mptcp_clean_una_wakeup+0x7f/0x2d0 net/mptcp/protocol.c:1053 mptcp_clean_una_wakeup net/mptcp/protocol.c:1060 [inline] __mptcp_retrans+0x108/0xe90 net/mptcp/protocol.c:2611 mptcp_worker+0x9c2/0x11d0 net/mptcp/protocol.c:2763 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3348 worker_thread+0x86d/0xd70 kernel/workqueue.c:3429 kthread+0x2f2/0x390 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244