Index: kern_kse.c
===================================================================
RCS file: /private/FreeBSD/src/sys/kern/kern_kse.c,v
retrieving revision 1.210
diff -u -p -r1.210 kern_kse.c
--- kern_kse.c	29 Jan 2005 23:11:59 -0000	1.210
+++ kern_kse.c	11 Feb 2005 18:15:00 -0000
@@ -416,9 +416,9 @@ kse_release(struct thread *td, struct ks
 			sigexit(td, SIGSEGV);
 		}
 	}
-	PROC_LOCK(p);
 	if (ku->ku_mflags & KMF_WAITSIGEVENT) {
 		/* UTS wants to wait for signal event */
+		PROC_LOCK(p);
 		if (!(p->p_flag & P_SIGEVENT) &&
 		    !(ku->ku_flags & KUF_DOUPCALL)) {
 			td->td_kflags |= TDK_KSERELSIG;
@@ -437,13 +437,14 @@ kse_release(struct thread *td, struct ks
 		     (kg->kg_completed == NULL))) {
 			kg->kg_upsleeps++;
 			td->td_kflags |= TDK_KSEREL;
+			PROC_LOCK(p);
 			error = msleep(&kg->kg_completed, &p->p_mtx,
 				PPAUSE|PCATCH, "kserel",
 				(uap->timeout ? tvtohz(&tv) : 0));
+			PROC_UNLOCK(p);
 			td->td_kflags &= ~(TDK_KSEREL | TDK_WAKEUP);
 			kg->kg_upsleeps--;
 		}
-		PROC_UNLOCK(p);
 	}
 	if (ku->ku_flags & KUF_DOUPCALL) {
 		mtx_lock_spin(&sched_lock);