* [PATCH] Don't free non-malloced memory and fix memory leak
@ 2011-05-31 11:35 Andreas Schwab
0 siblings, 0 replies; only message in thread
From: Andreas Schwab @ 2011-05-31 11:35 UTC (permalink / raw)
To: libc-hacker
2011-05-31 Andreas Schwab <schwab@redhat.com>
* nscd/nscd_getserv_r.c (nscd_getserv_r): Don't free non-malloced
memory. Use alloca_account. Fix memory leak when retrying.
---
nscd/nscd_getserv_r.c | 16 ++++++++++++----
1 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/nscd/nscd_getserv_r.c b/nscd/nscd_getserv_r.c
index de96a57..f9ef056 100644
--- a/nscd/nscd_getserv_r.c
+++ b/nscd/nscd_getserv_r.c
@@ -124,6 +124,7 @@ nscd_getserv_r (const char *crit, size_t critlen, const char *proto,
s_name = (char *) (&found->data[0].servdata + 1);
serv_resp = found->data[0].servdata;
s_proto = s_name + serv_resp.s_name_len;
+ alloca_aliases_len = 1;
aliases_len = (uint32_t *) (s_proto + serv_resp.s_proto_len);
aliases_list = ((char *) aliases_len
+ serv_resp.s_aliases_cnt * sizeof (uint32_t));
@@ -154,7 +155,9 @@ nscd_getserv_r (const char *crit, size_t critlen, const char *proto,
+ (serv_resp.s_aliases_cnt
* sizeof (uint32_t)));
if (alloca_aliases_len)
- tmp = __alloca (serv_resp.s_aliases_cnt * sizeof (uint32_t));
+ tmp = alloca_account (serv_resp.s_aliases_cnt
+ * sizeof (uint32_t),
+ alloca_used);
else
{
tmp = malloc (serv_resp.s_aliases_cnt * sizeof (uint32_t));
@@ -249,8 +252,9 @@ nscd_getserv_r (const char *crit, size_t critlen, const char *proto,
+ (serv_resp.s_aliases_cnt
* sizeof (uint32_t)));
if (alloca_aliases_len)
- aliases_len = alloca (serv_resp.s_aliases_cnt
- * sizeof (uint32_t));
+ aliases_len = alloca_account (serv_resp.s_aliases_cnt
+ * sizeof (uint32_t),
+ alloca_used);
else
{
aliases_len = malloc (serv_resp.s_aliases_cnt
@@ -368,7 +372,11 @@ nscd_getserv_r (const char *crit, size_t critlen, const char *proto,
}
if (retval != -1)
- goto retry;
+ {
+ if (!alloca_aliases_len)
+ free (aliases_len);
+ goto retry;
+ }
}
if (!alloca_aliases_len)
--
1.7.4.4
--
Andreas Schwab, schwab@redhat.com
GPG Key fingerprint = D4E8 DBE3 3813 BB5D FA84 5EC7 45C6 250E 6F00 984E
"And now for something completely different."
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2011-05-31 11:35 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-05-31 11:35 [PATCH] Don't free non-malloced memory and fix memory leak Andreas Schwab
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).