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| author | Daniel Latypov <dlatypov@google.com> | 2022-07-22 17:15:34 +0000 |
|---|---|---|
| committer | Shuah Khan <skhan@linuxfoundation.org> | 2022-10-07 10:15:56 -0600 |
| commit | 185d57797c5ea82e941befc2489dba0cf162b9c4 (patch) | |
| tree | a410492b1fb6ccdfef80f39c916cb02fe697ac2c /lib | |
| parent | e562e309d1d4ac05457c1454b6007071f13b5684 (diff) | |
| download | linux-stable-185d57797c5ea82e941befc2489dba0cf162b9c4.tar.gz linux-stable-185d57797c5ea82e941befc2489dba0cf162b9c4.tar.bz2 linux-stable-185d57797c5ea82e941befc2489dba0cf162b9c4.zip | |
kunit: make kunit_kfree(NULL) a no-op to match kfree()
The real kfree() function will silently return when given a NULL.
So a user might reasonably think they can write the following code:
char *buffer = NULL;
if (param->use_buffer) buffer = kunit_kzalloc(test, 10, GFP_KERNEL);
...
kunit_kfree(test, buffer);
As-is, kunit_kfree() will mark the test as FAILED when buffer is NULL.
(And in earlier times, it would segfault).
Let's match the semantics of kfree().
Suggested-by: David Gow <davidgow@google.com>
Signed-off-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: David Gow <davidgow@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/test.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 0e9ff5d8fe84..46471bda351e 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -722,6 +722,9 @@ static inline bool kunit_kfree_match(struct kunit *test, void kunit_kfree(struct kunit *test, const void *ptr) { + if (!ptr) + return; + if (kunit_destroy_resource(test, kunit_kfree_match, (void *)ptr)) KUNIT_FAIL(test, "kunit_kfree: %px already freed or not allocated by kunit", ptr); } |