drm/vkms: Adjust vkms_state->active_planes allocation type

[ Upstream commit 258aebf100540d36aba910f545d4d5ddf4ecaf0b ]

In preparation for making the kmalloc family of allocators type aware,
we need to make sure that the returned type from the allocation matches
the type of the variable being assigned. (Before, the allocator would
always return "void *", which can be implicitly cast to any pointer type.)

The assigned type is "struct vkms_plane_state **", but the returned type
will be "struct drm_plane **". These are the same size (pointer size), but
the types don't match. Adjust the allocation type to match the assignment.

Signed-off-by: Kees Cook <kees@kernel.org>
Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com>
Fixes: 8b1865873651 ("drm/vkms: totally reworked crc data tracking")
Link: https://lore.kernel.org/r/20250426061431.work.304-kees@kernel.org
Signed-off-by: Louis Chauvet <contact@louischauvet.fr>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
index 57bbd32e9bebb169f13c80140fb444d42741963d..de8c2d5cc89c0ef75b9871042b8321520a0b5a96 100644 (file)
--- a/drivers/gpu/drm/vkms/vkms_crtc.c
+++ b/drivers/gpu/drm/vkms/vkms_crtc.c
@@ -202,7 +202,7 @@ static int vkms_crtc_atomic_check(struct drm_crtc *crtc,
                i++;
        }
 
-       vkms_state->active_planes = kcalloc(i, sizeof(plane), GFP_KERNEL);
+       vkms_state->active_planes = kcalloc(i, sizeof(*vkms_state->active_planes), GFP_KERNEL);
        if (!vkms_state->active_planes)
                return -ENOMEM;
        vkms_state->num_active_planes = i;