------------[ cut here ]------------
WARNING: CPU: 0 PID: 9393 at net/mptcp/protocol.c:761 mptcp_reset_timer net/mptcp/protocol.c:761 [inline]
WARNING: CPU: 0 PID: 9393 at net/mptcp/protocol.c:761 mptcp_worker+0x1699/0x19f0 net/mptcp/protocol.c:2336
Modules linked in:
CPU: 0 PID: 9393 Comm: kworker/0:3 Not tainted 5.11.0-rc7-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+0x1699/0x19f0 net/mptcp/protocol.c:2336
Code: 00 00 eb 0d e8 a8 eb 33 f8 4c 89 ff be 01 00 00 00 e8 4b 35 00 00 e9 28 ed ff ff e8 91 eb 33 f8 e9 4d f2 ff ff e8 87 eb 33 f8 <0f> 0b bb 14 00 00 00 e9 ab fb ff ff 89 d9 80 e1 07 38 c1 0f 8c bd
RSP: 0018:ffffc900156b7c38 EFLAGS: 00010293
RAX: ffffffff8943f489 RBX: 0000000000000000 RCX: ffff88806c173780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888070338901 R08: ffffffff8943f032 R09: ffffed100e06710e
R10: ffffed100e06710e R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88801ccb8018 R14: ffff888070338868 R15: ffff888070338000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1bc1daa000 CR3: 0000000012bc6000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 process_one_work+0x789/0xfc0 kernel/workqueue.c:2275
 worker_thread+0xac1/0x1300 kernel/workqueue.c:2421
 kthread+0x39a/0x3c0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296