diff --git a/include/xfuncs.h b/include/xfuncs.h
index 6431f0879..4ce4e9292 100644
--- a/include/xfuncs.h
+++ b/include/xfuncs.h
@@ -4,5 +4,6 @@
 void *xmalloc(size_t size);
 void *xrealloc(void *ptr, size_t size);
 void *xzalloc(size_t size);
+char *xstrdup(const char *s);
 
 #endif /* __XFUNCS_H */
diff --git a/lib/xfuncs.c b/lib/xfuncs.c
index 426484be2..01a64cf5e 100644
--- a/lib/xfuncs.c
+++ b/lib/xfuncs.c
@@ -60,3 +60,13 @@ void *xzalloc(size_t size)
 }
 EXPORT_SYMBOL(xzalloc);
 
+char *xstrdup(const char *s)
+{
+	char *p = strdup(s);
+
+	if (!p)
+		panic("ERROR: out of memory\n");
+	return p;
+}
+EXPORT_SYMBOL(xstrdup);
+