--- nptl/pthread_mutex_getprioceiling.c.orig	2006-06-19 01:53:09.079491221 +0200
+++ nptl/pthread_mutex_getprioceiling.c	2006-06-19 01:53:16.117261519 +0200
@@ -29,5 +29,14 @@
   *prioceiling = (mutex->__data.__kind & PTHREAD_MUTEX_PRIO_CEILING_MASK)
 		 >> PTHREAD_MUTEX_PRIO_CEILING_SHIFT;
 
+  /* In case we are out of range at the lower end (SCHED_FIFO can begin at 1
+     and we are 0 by default) return the lowest possible value which is
+     how we _effectively_ behave like. */
+  INTERNAL_SYSCALL_DECL (scerr);
+  int minprio = INTERNAL_SYSCALL (sched_get_priority_min, scerr, 1,
+				  SCHED_FIFO);
+  if (*prioceiling < minprio)
+    *prioceiling = minprio;
+
   return 0;
 }
--- nptl/pthread_mutexattr_getprioceiling.c.orig	2006-06-19 01:52:55.121930006 +0200
+++ nptl/pthread_mutexattr_getprioceiling.c	2006-06-19 01:52:57.642489593 +0200
@@ -33,5 +33,14 @@
   *prioceiling = ((iattr->mutexkind & PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
 		  >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT);
 
+  /* In case we are out of range at the lower end (SCHED_FIFO can begin at 1
+     and we are 0 by default) return the lowest possible value which is
+     how we _effectively_ behave like. */
+  INTERNAL_SYSCALL_DECL (scerr);
+  int minprio = INTERNAL_SYSCALL (sched_get_priority_min, scerr, 1,
+				  SCHED_FIFO);
+  if (*prioceiling < minprio)
+    *prioceiling = minprio;
+
   return 0;
 }