------------[ cut here ]------------ WARNING: CPU: 0 PID: 4847 at net/mptcp/protocol.c:1004 __mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1004 Modules linked in: CPU: 0 PID: 4847 Comm: kworker/0:3 Not tainted 6.8.0-rc6-syzkaller-g1006571320a7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Workqueue: events mptcp_worker RIP: 0010:__mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1004 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 70 32 a1 f6 e9 7f fa ff ff e8 66 35 3e 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:ffffc9000367f840 EFLAGS: 00010293 RAX: ffffffff8b55380a RBX: ffff88807f8ae5b8 RCX: ffff888023035940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000367f950 R08: ffffffff8b552c8d R09: fffff520006cff24 R10: dffffc0000000000 R11: fffff520006cff24 R12: 0000000000000000 R13: ffff88807f8ae5a8 R14: dffffc0000000000 R15: ffff88802b3f0000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f43b6d43f00 CR3: 000000007cbec000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __mptcp_clean_una_wakeup+0x7f/0x3c0 net/mptcp/protocol.c:1054 mptcp_clean_una_wakeup net/mptcp/protocol.c:1061 [inline] __mptcp_retrans+0x108/0xe90 net/mptcp/protocol.c:2593 mptcp_worker+0x9c2/0x11d0 net/mptcp/protocol.c:2745 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787 kthread+0x2ef/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243