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authorXiyu Yang <xiyuyang19@fudan.edu.cn>2021-09-09 15:24:36 +0800
committerShuah Khan <skhan@linuxfoundation.org>2021-10-01 13:49:38 -0600
commitf62314b1ced25c58b86e044fc951cd6a1ea234cf (patch)
tree92ecb8b41e5469aff03dc367e7501d2c7f3b9f9e /lib
parentd8c23ead708b40a16413163f5f93e07fbd4f077d (diff)
downloadlinux-f62314b1ced25c58b86e044fc951cd6a1ea234cf.tar.gz
kunit: fix reference count leak in kfree_at_end
The reference counting issue happens in the normal path of kfree_at_end(). When kunit_alloc_and_get_resource() is invoked, the function forgets to handle the returned resource object, whose refcount increased inside, causing a refcount leak. Fix this issue by calling kunit_alloc_resource() instead of kunit_alloc_and_get_resource(). Fixed the following when applying: Shuah Khan <skhan@linuxfoundation.org> CHECK: Alignment should match open parenthesis + kunit_alloc_resource(test, NULL, kfree_res_free, GFP_KERNEL, (void *)to_free); Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> Reviewed-by: Daniel Latypov <dlatypov@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/kunit/executor_test.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/kunit/executor_test.c b/lib/kunit/executor_test.c
index cdbe54b16501..e14a18af573d 100644
--- a/lib/kunit/executor_test.c
+++ b/lib/kunit/executor_test.c
@@ -116,8 +116,8 @@ static void kfree_at_end(struct kunit *test, const void *to_free)
/* kfree() handles NULL already, but avoid allocating a no-op cleanup. */
if (IS_ERR_OR_NULL(to_free))
return;
- kunit_alloc_and_get_resource(test, NULL, kfree_res_free, GFP_KERNEL,
- (void *)to_free);
+ kunit_alloc_resource(test, NULL, kfree_res_free, GFP_KERNEL,
+ (void *)to_free);
}
static struct kunit_suite *alloc_fake_suite(struct kunit *test,