From: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Date: Wed, 27 Jul 2022 18:48:19 +0000 (-0600)
Subject: tools/cgget: fix resource leak in get_cv_value()
X-Git-Tag: v3.0~13
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8bf0b38a75ed06520d05d130c0c92234df8665f;p=thirdparty%2Flibcgroup.git

tools/cgget: fix resource leak in get_cv_value()

Fix a resource leak, reported by the Coverity tool:

CID 258291 (#1 of 1): Resource leak (RESOURCE_LEAK)8. leaked_storage:
Variable handle going out of scope leaks the storage it points to.

In get_cv_value(), currently, we goto end label, on the failure of
strdup() before closing the handle, leaking the resource. Fix it by
removing the goto, that allows the code flow to close the handle and
execute the code under the end label.

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
---

diff --git a/src/tools/cgget.c b/src/tools/cgget.c
index c6721d19..dd9a7b6a 100644
--- a/src/tools/cgget.c
+++ b/src/tools/cgget.c
@@ -493,7 +493,7 @@ static int get_cv_value(struct control_value * const cv, const char * const cg_n
 	strncpy(cv->value, tmp_line, CG_CONTROL_VALUE_MAX - 1);
 	cv->multiline_value = strdup(cv->value);
 	if (cv->multiline_value == NULL)
-		goto end;
+		goto read_end;
 
 	while ((ret = cgroup_read_value_next(&handle, tmp_line, LL_MAX)) == 0) {
 		if (ret == 0) {