Il 02/02/23 05:57, Chen-Yu Tsai ha scritto:
The MediaTek DisplayPort interface bridge driver starts its interrupts as soon as its probed. However when the interrupts trigger the bridge might not have been attached to a DRM device. As drm_helper_hpd_irq_event() does not check whether the passed in drm_device is valid or not, a NULL pointer passed in results in a kernel NULL pointer dereference in it.Check whether the bridge is attached and only trigger an HPD event if it is. Fixes: f70ac097a2cf ("drm/mediatek: Add MT8195 Embedded DisplayPort driver") Signed-off-by: Chen-Yu Tsai <we...@chromium.org> Reviewed-by: Guillaume Ranquet <granq...@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delre...@collabora.com>
