X-Git-Url: https://bbs.cooldavid.org/git/?a=blobdiff_plain;f=lib%2Fparser.c;h=6e89eca5cca00b6fb059bae5135b0ee381a5d5d5;hb=HEAD;hp=fb34977246bb052923d5fad6341c2ba80315fdfe;hpb=eb6b6d7cdd5548fa03a919d14615195600013be2;p=net-next-2.6.git

diff --git a/lib/parser.c b/lib/parser.c
index fb34977246b..6e89eca5cca 100644
--- a/lib/parser.c
+++ b/lib/parser.c
@@ -128,12 +128,13 @@ static int match_number(substring_t *s, int *result, int base)
 	char *endp;
 	char *buf;
 	int ret;
+	size_t len = s->to - s->from;
 
-	buf = kmalloc(s->to - s->from + 1, GFP_KERNEL);
+	buf = kmalloc(len + 1, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
-	memcpy(buf, s->from, s->to - s->from);
-	buf[s->to - s->from] = '\0';
+	memcpy(buf, s->from, len);
+	buf[len] = '\0';
 	*result = simple_strtol(buf, &endp, base);
 	ret = 0;
 	if (endp == buf)