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

[Maira Canal]

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.krzyszto...@linux.intel.com>

Reviewed-by: Maíra Canal <mairaca...@riseup.net>

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

Best Regards,
- Maíra

Cc: "Maíra Canal" <mairaca...@riseup.net>
Cc: Arthur Grillo <arthurgri...@riseup.net>
Cc: Javier Martinez Canillas <javi...@redhat.com>
Cc: Daniel Latypov <dlaty...@google.com>
Cc: sta...@vger.kernel.org # 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));