This is a note to let you know that I've just added the patch titled media: coda: Add check for kmalloc 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: media-coda-add-check-for-kmalloc.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 24427d610ca3c746238e224cd9b5e65f83de00aa Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx> Date: Thu Nov 17 15:02:36 2022 +0800 media: coda: Add check for kmalloc [ Upstream commit 6e5e5defdb8b0186312c2f855ace175aee6daf9b ] As the kmalloc may return NULL pointer, it should be better to check the return value in order to avoid NULL poineter dereference, same as the others. Fixes: cb1d3a336371 ("[media] coda: add CODA7541 JPEG support") Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx> Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index b8a70ef8e8ec..6ffa12e83e42 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -1082,10 +1082,16 @@ static int coda_start_encoding(struct coda_ctx *ctx) } if (dst_fourcc == V4L2_PIX_FMT_JPEG) { - if (!ctx->params.jpeg_qmat_tab[0]) + if (!ctx->params.jpeg_qmat_tab[0]) { ctx->params.jpeg_qmat_tab[0] = kmalloc(64, GFP_KERNEL); - if (!ctx->params.jpeg_qmat_tab[1]) + if (!ctx->params.jpeg_qmat_tab[0]) + return -ENOMEM; + } + if (!ctx->params.jpeg_qmat_tab[1]) { ctx->params.jpeg_qmat_tab[1] = kmalloc(64, GFP_KERNEL); + if (!ctx->params.jpeg_qmat_tab[1]) + return -ENOMEM; + } coda_set_jpeg_compression_quality(ctx, ctx->params.jpeg_quality); }