------------[ cut here ]------------ WARNING: CPU: 0 PID: 2990 at net/mptcp/protocol.c:761 mptcp_reset_timer net/mptcp/protocol.c:761 [inline] WARNING: CPU: 0 PID: 2990 at net/mptcp/protocol.c:761 mptcp_worker+0x17bf/0x1b50 net/mptcp/protocol.c:2336 Modules linked in: CPU: 0 PID: 2990 Comm: kworker/0:2 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events mptcp_worker RIP: 0010:mptcp_reset_timer net/mptcp/protocol.c:761 [inline] RIP: 0010:mptcp_worker+0x17bf/0x1b50 net/mptcp/protocol.c:2336 Code: 27 34 e3 f7 4c 89 f7 be 01 00 00 00 e8 7a 37 00 00 e9 87 ec ff ff e8 10 34 e3 f7 4c 8b 74 24 18 e9 7f f2 ff ff e8 01 34 e3 f7 <0f> 0b bb 14 00 00 00 e9 99 fb ff ff 89 d9 80 e1 07 38 c1 0f 8c fc RSP: 0018:ffffc90000fffb00 EFLAGS: 00010293 RAX: ffffffff8999e8bf RBX: 0000000000000000 RCX: ffff88801a741bc0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000fffc50 R08: ffffffff8999e456 R09: ffffed10047ff28e R10: ffffed10047ff28e R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880134d3718 R14: ffff888023ff8c00 R15: ffff888073518001 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdbc9485db8 CR3: 000000001347b000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x833/0x10c0 kernel/workqueue.c:2275 worker_thread+0xaa4/0x1460 kernel/workqueue.c:2421 kthread+0x39a/0x3c0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296