Re: [PATCH] drm/tests: Fix incorrect argument in drm_test_mm_insert_range

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On 9/15/23 11:17, Janusz Krzysztofik wrote:
Hi Maíra,

Thanks for review.

On Friday, 15 September 2023 16:01:31 CEST Maira Canal wrote:
Hi,

On 9/11/23 10:03, Janusz Krzysztofik wrote:
While drm_mm test was converted form igt selftest to kunit, unexpected
value of "end" argument equal "start" was introduced to one of calls to a
function that executes the drm_test_mm_insert_range for specific start/end
pair of arguments.  As a consequence, DRM_MM_BUG_ON(end <= start) is
triggered.  Fix it by restoring the original value.

Fixes: fc8d29e298cf ("drm: selftest: convert drm_mm selftest to KUnit")
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@xxxxxxxxxxxxxxx>

Reviewed-by: Maíra Canal <mairacanal@xxxxxxxxxx>

Do you need me to push it to drm-misc-fixes?

Yes, please do if you can.

Pushed to drm-misc/drm-misc-fixes. Thanks!

Best Regards,
- Maíra


Thanks,
Janusz


Best Regards,
- Maíra

Cc: "Maíra Canal" <mairacanal@xxxxxxxxxx>
Cc: Arthur Grillo <arthurgrillo@xxxxxxxxxx>
Cc: Javier Martinez Canillas <javierm@xxxxxxxxxx>
Cc: Daniel Latypov <dlatypov@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v6.1+
---
   drivers/gpu/drm/tests/drm_mm_test.c | 2 +-
   1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/tests/drm_mm_test.c b/drivers/gpu/drm/tests/drm_mm_test.c
index 186b28dc70380..05d5e7af6d250 100644
--- a/drivers/gpu/drm/tests/drm_mm_test.c
+++ b/drivers/gpu/drm/tests/drm_mm_test.c
@@ -939,7 +939,7 @@ static void drm_test_mm_insert_range(struct kunit *test)
   		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max - 1));
   		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max / 2));
   		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size,
-								    max / 2, max / 2));
+								    max / 2, max));
   		KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size,
   								    max / 4 + 1, 3 * max / 4 - 1));








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