From: Kevin P. Fleming <kpfleming@digium.com>
Date: Thu, 22 Oct 2009 18:41:47 +0000 (+0000)
Subject: Fix a refcount error introduced by yesterday's OBJ_MULTIPLE commit.
X-Git-Tag: 11.0.0-beta1~3992
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=be796e703ae8a05dde29c26f92f545b5ec0c40bc;p=thirdparty%2Fasterisk.git

Fix a refcount error introduced by yesterday's OBJ_MULTIPLE commit.

When an object is being unlinked from its container *and* being returned to
the caller, we do not want to decrement the reference count after unlinking
it from the container, as the reference that the container held is what we
are returning to the caller... and if it was the only remaining reference to
the object, that could result in the object being destroyed.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@225405 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/main/astobj2.c b/main/astobj2.c
index cecef7c66f..da52ab1f0d 100644
--- a/main/astobj2.c
+++ b/main/astobj2.c
@@ -685,7 +685,6 @@ static void *internal_ao2_callback(struct ao2_container *c,
 				match &= cb_default(EXTERNAL_OBJ(cur->astobj), arg, flags);
 			}
 
-			/* we found the object, performing operations according flags */
 			if (match == 0) {	/* no match, no stop, continue */
 				continue;
 			} else if (match == CMP_STOP) {	/* no match but stop, we are done */
@@ -693,6 +692,7 @@ static void *internal_ao2_callback(struct ao2_container *c,
 				break;
 			}
 
+			/* we found the object, performing operations according flags */
 			/* we have a match (CMP_MATCH) here */
 			if (!(flags & OBJ_NODATA)) {	/* if must return the object, record the value */
 				/* it is important to handle this case before the unlink */
@@ -719,12 +719,6 @@ static void *internal_ao2_callback(struct ao2_container *c,
 				AST_LIST_REMOVE_CURRENT(entry);
 				/* update number of elements */
 				ast_atomic_fetchadd_int(&c->elements, -1);
-				if (!(flags & OBJ_NODATA)) {
-					if (tag)
-						__ao2_ref_debug(EXTERNAL_OBJ(cur->astobj), -1, tag, file, line, funcname);
-					else
-						__ao2_ref(EXTERNAL_OBJ(cur->astobj), -1);
-				}
 				ast_free(cur);	/* free the link record */
 			}