------------[ cut here ]------------ WARNING: CPU: 0 PID: 5160 at net/mptcp/protocol.c:1006 __mptcp_clean_una+0xddb/0xff0 net/mptcp/protocol.c:1006 Modules linked in: CPU: 0 PID: 5160 Comm: kworker/0:5 Not tainted 6.9.0-syzkaller-08544-g4b377b4868ef #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 c0 92 8b f6 e9 7f fa ff ff e8 e6 53 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:ffffc90003d5f800 EFLAGS: 00010293 RAX: ffffffff8b6fddea RBX: ffff88805d3c7818 RCX: ffff88802a259e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003d5f918 R08: ffffffff8b6fd26d R09: 1ffffd4000375686 R10: dffffc0000000000 R11: fffff94000375687 R12: 0000000000000000 R13: ffff88805d3c7808 R14: dffffc0000000000 R15: ffff8880517f0000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002600 CR3: 000000005e0ca000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __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