X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=lib%2Fkasprintf.c;h=7f6c506a494226479af1152f13f99f1870f554d1;hb=f334bcd94b7d3c0fbc34d518a86548f451ab5faf;hp=f194e6e593e19db22ad6b7e50aeee0e7c46eafa6;hpb=d267b8d6c65ed7636a412ca479b96df7c0f5b27b;p=cascardo%2Flinux.git

diff --git a/lib/kasprintf.c b/lib/kasprintf.c
index f194e6e593e1..7f6c506a4942 100644
--- a/lib/kasprintf.c
+++ b/lib/kasprintf.c
@@ -13,19 +13,21 @@
 /* Simplified asprintf. */
 char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap)
 {
-	unsigned int len;
+	unsigned int first, second;
 	char *p;
 	va_list aq;
 
 	va_copy(aq, ap);
-	len = vsnprintf(NULL, 0, fmt, aq);
+	first = vsnprintf(NULL, 0, fmt, aq);
 	va_end(aq);
 
-	p = kmalloc_track_caller(len+1, gfp);
+	p = kmalloc_track_caller(first+1, gfp);
 	if (!p)
 		return NULL;
 
-	vsnprintf(p, len+1, fmt, ap);
+	second = vsnprintf(p, first+1, fmt, ap);
+	WARN(first != second, "different return values (%u and %u) from vsnprintf(\"%s\", ...)",
+	     first, second, fmt);
 
 	return p;
 }