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bcache: Fix a format string overflow

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Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kent Overstreet <koverstreet@google.com>
This commit is contained in:
Kent Overstreet 2013-04-05 14:12:28 -07:00
parent 8ef747909c
commit 91bbcfc361
1 changed files with 2 additions and 2 deletions
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4
drivers/md/bcache/util.c
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@ -76,7 +76,7 @@ STRTO_H(strtoull, unsigned long long)
ssize_t bch_hprint(char *buf, int64_t v)
{
static const char units[] = "?kMGTPEZY";
char dec[3] = "";
char dec[4] = "";
int u, t = 0;
for (u = 0; v >= 1024 || v <= -1024; u++) {
@ -88,7 +88,7 @@ ssize_t bch_hprint(char *buf, int64_t v)
return sprintf(buf, "%llu", v);
if (v < 100 && v > -100)
sprintf(dec, ".%i", t / 100);
snprintf(dec, sizeof(dec), ".%i", t / 100);
return sprintf(buf, "%lli%s%c", v, dec, units[u]);
}