------------[ cut here ]------------ WARNING: CPU: 0 PID: 9296 at net/mptcp/protocol.c:761 mptcp_reset_timer net/mptcp/protocol.c:761 [inline] WARNING: CPU: 0 PID: 9296 at net/mptcp/protocol.c:761 mptcp_worker+0x1699/0x19f0 net/mptcp/protocol.c:2336 Modules linked in: CPU: 0 PID: 9296 Comm: kworker/0:4 Not tainted 5.11.0-rc5-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 28 b0 34 f8 4c 89 ff be 01 00 00 00 e8 4b 35 00 00 e9 28 ed ff ff e8 11 b0 34 f8 e9 4d f2 ff ff e8 07 b0 34 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:ffffc9000935fc38 EFLAGS: 00010293 RAX: ffffffff89431c39 RBX: 0000000000000000 RCX: ffff8880705d3780 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888073540901 R08: ffffffff894317e2 R09: ffffed100e6a810e R10: ffffed100e6a810e R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888025bff118 R14: ffff888073540868 R15: ffff888073540000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000749138 CR3: 000000005b5e5000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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