------------[ cut here ]------------
WARNING: CPU: 0 PID: 4898 at net/mptcp/protocol.c:761 mptcp_reset_timer net/mptcp/protocol.c:761 [inline]
WARNING: CPU: 0 PID: 4898 at net/mptcp/protocol.c:761 mptcp_worker+0x1a4d/0x1e40 net/mptcp/protocol.c:2336
Modules linked in:
CPU: 0 PID: 4898 Comm: kworker/0:5 Not tainted 5.11.0-rc3-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+0x1a4d/0x1e40 net/mptcp/protocol.c:2336
Code: 00 00 eb 0d e8 04 47 e3 f7 4c 89 e7 be 01 00 00 00 e8 d7 37 00 00 e9 67 ea ff ff e8 ed 46 e3 f7 e9 2c f1 ff ff e8 e3 46 e3 f7 <0f> 0b bb 14 00 00 00 e9 f0 fa ff ff 89 d1 80 e1 07 38 c1 0f 8c 72
RSP: 0018:ffffc90000fefb00 EFLAGS: 00010293
RAX: ffffffff8999d59d RBX: 0000000000000000 RCX: ffff88801bb51bc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000fefc50 R08: ffffffff8999d08b R09: ffffed100399d88d
R10: ffffed100399d88d R11: 0000000000000000 R12: ffff88801ccebc00
R13: ffff8880191f8f18 R14: ffffc90000fefba0 R15: ffff88801ccec4b8
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fda13729028 CR3: 00000000260d2000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
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