This is a note to let you know that I've just added the patch titled drm/mediatek: mtk_drm_crtc: Add checks for devm_kcalloc to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-mediatek-mtk_drm_crtc-add-checks-for-devm_kcallo.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 229b18828f7429c44b88bcb3cd8014223d4e1f8f Author: ruanjinjie <ruanjinjie@xxxxxxxxxx> Date: Mon Dec 5 17:51:15 2022 +0800 drm/mediatek: mtk_drm_crtc: Add checks for devm_kcalloc [ Upstream commit 5bf1e3bd7da625ccf9a22c8cb7d65271e6e47f4c ] As the devm_kcalloc may return NULL, the return value needs to be checked to avoid NULL poineter dereference. Fixes: 31c5558dae05 ("drm/mediatek: Refactor plane init") Signed-off-by: ruanjinjie <ruanjinjie@xxxxxxxxxx> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20221205095115.2905090-1-ruanjinjie@xxxxxxxxxx/ Signed-off-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index dfd5ed15a7f4a..e83b1c406b96a 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -803,6 +803,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, mtk_crtc->planes = devm_kcalloc(dev, num_comp_planes, sizeof(struct drm_plane), GFP_KERNEL); + if (!mtk_crtc->planes) + return -ENOMEM; for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) { ret = mtk_drm_crtc_init_comp_planes(drm_dev, mtk_crtc, i,