[PATCH 6.0 0226/1073] media: coda: jpeg: Add check for kmalloc

Greg Kroah-Hartman
2022-12-28T15:23:24Z

From: Jiasheng Jiang <jiasheng@iscas.ac.cn>

[ Upstream commit f30ce3d3760b22ee33c8d9c2e223764ad30bdc5f ]

As kmalloc can return NULL pointer, it should be better to
check the return value and return error, same as
coda_jpeg_decode_header.

Fixes: 96f6f62c4656 ("media: coda: jpeg: add CODA960 JPEG encoder support")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/platform/chips-media/coda-jpeg.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/chips-media/coda-jpeg.c b/drivers/media/platform/chips-media/coda-jpeg.c
index a0b22b07f69a..2284e0420934 100644
--- a/drivers/media/platform/chips-media/coda-jpeg.c
+++ b/drivers/media/platform/chips-media/coda-jpeg.c
@@ -1053,10 +1053,16 @@ static int coda9_jpeg_start_encoding(struct coda_ctx *ctx)
v4l2_err(&dev->v4l2_dev, "error loading Huffman tables\n");
return ret;
}
- 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);

return 0;
--
2.35.1