6.5-stable review patch. If anyone has any objections, please let me know.
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From: Janusz Krzysztofik janusz.krzysztofik@linux.intel.com
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@linux.intel.com Cc: "Maíra Canal" mairacanal@riseup.net Cc: Arthur Grillo arthurgrillo@riseup.net Cc: Javier Martinez Canillas javierm@redhat.com Cc: Daniel Latypov dlatypov@google.com Cc: stable@vger.kernel.org # v6.1+ Reviewed-by: Maíra Canal mairacanal@riseup.net Signed-off-by: Maíra Canal mairacanal@riseup.net Link: https://patchwork.freedesktop.org/patch/msgid/20230911130323.7037-2-janusz.k... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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));