From: Liviu Dudau liviu.dudau@arm.com

[ Upstream commit c8f76c37cc3668ee45e081e76a15f24a352ebbdd ]

If drm_universal_plane_init() fails early we jump to the common cleanup code that calls komeda_plane_destroy() which in turn could access the uninitalised drm_plane and crash. Return early if an error is detected without going through the common code.

Reported-by: Steven Price steven.price@arm.com Reviewed-by: Steven Price steven.price@arm.com Signed-off-by: Liviu Dudau liviu.dudau@arm.com Link: https://lore.kernel.org/dri-devel/20211203100946.2706922-1-liviu.dudau@arm.c... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/arm/display/komeda/komeda_plane.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c index d63d83800a8a..d646e3ae1a23 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c @@ -275,8 +275,10 @@ static int komeda_plane_add(struct komeda_kms_dev *kms,

komeda_put_fourcc_list(formats);

- if (err) - goto cleanup; + if (err) { + kfree(kplane); + return err; + }

drm_plane_helper_add(plane, &komeda_plane_helper_funcs);