6.11-stable review patch. If anyone has any objections, please let me know.
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From: Zichen Xie zichenxie0106@gmail.com
[ Upstream commit 9ad467a2b2716d4ed12f003b041aa6c776a13ff5 ]
kunit_kzalloc() may return a NULL pointer, dereferencing it without NULL check may lead to NULL dereference. Add NULL checks for all the kunit_kzalloc() in sound_kunit.c
Fixes: 3e39acf56ede ("ALSA: core: Add sound core KUnit test") Signed-off-by: Zichen Xie zichenxie0106@gmail.com Link: https://patch.msgid.link/20241126192448.12645-1-zichenxie0106@gmail.com Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- sound/core/sound_kunit.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/sound/core/sound_kunit.c b/sound/core/sound_kunit.c index bfed1a25fc8f7..84e337ecbddd0 100644 --- a/sound/core/sound_kunit.c +++ b/sound/core/sound_kunit.c @@ -172,6 +172,7 @@ static void test_format_fill_silence(struct kunit *test) u32 i, j;
buffer = kunit_kzalloc(test, SILENCE_BUFFER_SIZE, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buffer);
for (i = 0; i < ARRAY_SIZE(buf_samples); i++) { for (j = 0; j < ARRAY_SIZE(valid_fmt); j++) @@ -208,8 +209,12 @@ static void test_playback_avail(struct kunit *test) struct snd_pcm_runtime *r = kunit_kzalloc(test, sizeof(*r), GFP_KERNEL); u32 i;
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, r); + r->status = kunit_kzalloc(test, sizeof(*r->status), GFP_KERNEL); r->control = kunit_kzalloc(test, sizeof(*r->control), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, r->status); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, r->control);
for (i = 0; i < ARRAY_SIZE(p_avail_data); i++) { r->buffer_size = p_avail_data[i].buffer_size; @@ -232,8 +237,12 @@ static void test_capture_avail(struct kunit *test) struct snd_pcm_runtime *r = kunit_kzalloc(test, sizeof(*r), GFP_KERNEL); u32 i;
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, r); + r->status = kunit_kzalloc(test, sizeof(*r->status), GFP_KERNEL); r->control = kunit_kzalloc(test, sizeof(*r->control), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, r->status); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, r->control);
for (i = 0; i < ARRAY_SIZE(c_avail_data); i++) { r->buffer_size = c_avail_data[i].buffer_size; @@ -247,6 +256,7 @@ static void test_capture_avail(struct kunit *test) static void test_card_set_id(struct kunit *test) { struct snd_card *card = kunit_kzalloc(test, sizeof(*card), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, card);
snd_card_set_id(card, VALID_NAME); KUNIT_EXPECT_STREQ(test, card->id, VALID_NAME); @@ -280,6 +290,7 @@ static void test_pcm_format_name(struct kunit *test) static void test_card_add_component(struct kunit *test) { struct snd_card *card = kunit_kzalloc(test, sizeof(*card), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, card);
snd_component_add(card, TEST_FIRST_COMPONENT); KUNIT_ASSERT_STREQ(test, card->components, TEST_FIRST_COMPONENT);