6.5-stable review patch. If anyone has any objections, please let me know.
------------------
From: Janusz Krzysztofik <janusz.krzysztofik@xxxxxxxxxxxxxxx>
commit 2ba157983974ae1b6aaef7d4953812020d6f1eb5 upstream.
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>
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+
Reviewed-by: Maíra Canal <mairacanal@xxxxxxxxxx>
Signed-off-by: Maíra Canal <mairacanal@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20230911130323.7037-2-janusz.krzysztofik@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/tests/drm_mm_test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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(str
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));
