diff -urN src.orig/nptl/sysdeps/pthread/pthread_rwlock_timedrdlock.c src/nptl/sysdeps/pthread/pthread_rwlock_timedrdlock.c
--- src.orig/nptl/sysdeps/pthread/pthread_rwlock_timedrdlock.c	2004-06-24 19:11:07.000000000 +0800
+++ src/nptl/sysdeps/pthread/pthread_rwlock_timedrdlock.c	2004-06-24 19:22:40.000000000 +0800
@@ -70,7 +70,8 @@
 	 performed if we would not block at all simply moving the test
 	 to the front is no option.  Replicating all the code is
 	 costly while this test is not.  */
-      if (__builtin_expect (abstime->tv_nsec >= 1000000000, 0))
+      if (__builtin_expect (abstime->tv_nsec >= 1000000000
+                            || abstime->tv_sec < 0, 0))
 	{
 	  result = EINVAL;
 	  break;
diff -urN src.orig/nptl/sysdeps/pthread/pthread_rwlock_timedwrlock.c src/nptl/sysdeps/pthread/pthread_rwlock_timedwrlock.c
--- src.orig/nptl/sysdeps/pthread/pthread_rwlock_timedwrlock.c	2004-06-24 19:11:07.000000000 +0800
+++ src/nptl/sysdeps/pthread/pthread_rwlock_timedwrlock.c	2004-06-24 19:23:38.000000000 +0800
@@ -61,7 +61,8 @@
 	 performed if we would not block at all simply moving the test
 	 to the front is no option.  Replicating all the code is
 	 costly while this test is not.  */
-      if (abstime->tv_nsec >= 1000000000)
+      if (__builtin_expect (abstime->tv_nsec >= 1000000000
+                            || abstime->tv_sec < 0, 0))
 	{
 	  result = EINVAL;
 	  break;