Re: [PATCH] drm/sun4i: backend: fix error pointer dereference
From: Chen-Yu Tsai <wens@kernel.org>
Date: 2026-02-17 07:53:49
Also in:
dri-devel, linux-sunxi, lkml
On Tue, Feb 17, 2026 at 9:48 AM Ethan Tidmore [off-list ref] wrote:
The function drm_atomic_get_plane_state() can return an error pointer
and is not checked for it. Add error pointer check.
Detected by Smatch:
drivers/gpu/drm/sun4i/sun4i_backend.c:496 sun4i_backend_atomic_check() error:
'plane_state' dereferencing possible ERR_PTR()
Fixes: 96180dde23b79 ("drm/sun4i: backend: Add a custom atomic_check for the frontend")
Signed-off-by: Ethan Tidmore <redacted>Reviewed-by: Chen-Yu Tsai <wens@kernel.org>