From: Jim Meyering <meyering@xxxxxxxxxx>
* mkfs.c (parse_size): ./mkfs.btrfs -A '' would read and possibly
write the byte before beginning of strdup'd heap buffer. All other
size-accepting options were similarly affected.
---
mkfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mkfs.c b/mkfs.c
index 03239fb..4aff2fd 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -63,7 +63,7 @@ static u64 parse_size(char *s)
s = strdup(s);
- if (!isdigit(s[len - 1])) {
+ if (len && !isdigit(s[len - 1])) {
c = tolower(s[len - 1]);
switch (c) {
case 'g':
--
1.7.10.208.gb4267
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