From: Jonathan Rose <jrose@digium.com>
Date: Thu, 21 Aug 2014 21:15:40 +0000 (+0000)
Subject: res_musiconhold: Fix reference leaks caused when reloading with REF_DEBUG set
X-Git-Tag: 12.6.0-rc1~62
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8be641970e388dfe06d57b03bf066a0ea8d52798;p=thirdparty%2Fasterisk.git

res_musiconhold: Fix reference leaks caused when reloading with REF_DEBUG set

Due to a faulty function for debugging reference decrementing, it was possible
to reduce the refcount on the wrong object if two moh classes of the same name
were in the moh class container.

(closes issue ASTERISK-22252)
Reported by: Walter Doekes
Patches:
    18_moh_debug_ref_patch.diff Uploaded by Jonathan Rose (license 6182)
........

Merged revisions 398937 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 421777 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/12@421779 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/res/res_musiconhold.c b/res/res_musiconhold.c
index 290052592f..82c594874e 100644
--- a/res/res_musiconhold.c
+++ b/res/res_musiconhold.c
@@ -242,8 +242,9 @@ static int reload(void);
 #define mohclass_unref(class,string) _mohclass_unref(class, string, __FILE__,__LINE__,__PRETTY_FUNCTION__)
 static struct mohclass *_mohclass_unref(struct mohclass *class, const char *tag, const char *file, int line, const char *funcname)
 {
-	struct mohclass *dup;
-	if ((dup = ao2_find(mohclasses, class, OBJ_POINTER))) {
+	struct mohclass *dup = ao2_callback(mohclasses, OBJ_POINTER, ao2_match_by_addr, class);
+
+	if (dup) {
 		if (__ao2_ref_debug(dup, -1, (char *) tag, (char *) file, line, funcname) == 2) {
 			FILE *ref = fopen("/tmp/refs", "a");
 			if (ref) {
@@ -256,7 +257,7 @@ static struct mohclass *_mohclass_unref(struct mohclass *class, const char *tag,
 			ao2_ref(class, -1);
 		}
 	} else {
-		ao2_t_ref(class, -1, (char *) tag);
+		__ao2_ref_debug(class, -1, (char *) tag, (char *) file, line, funcname);
 	}
 	return NULL;
 }