From 02015f69f6cf7630015f26b349076fe7b9e76de1 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Thu, 4 Jan 2024 04:22:04 +0000
Subject: [PATCH] kernel: make sure process is in Queueing state in qunlock()

---
 sys/src/9/port/qlock.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/src/9/port/qlock.c b/sys/src/9/port/qlock.c
index fa8a064e3..0490b965c 100644
--- a/sys/src/9/port/qlock.c
+++ b/sys/src/9/port/qlock.c
@@ -134,6 +134,8 @@ qunlock(QLock *q)
 			getcallerpc(&q));
 	p = q->head;
 	if(p != nil){
+		if(p->state != Queueing)
+			panic("qunlock");
 		q->pc = p->qpc;
 		q->head = p->qnext;
 		if(q->head == nil)