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Subject[PATCH v2 1/2] media: staging/intel-ipu3: Fix memory leak in imu_fmt
Date
We are losing the reference to an allocated memory if try. Change the
order of the check to avoid that.

Cc: stable@vger.kernel.org
Fixes: 6d5f26f2e045 ("media: staging/intel-ipu3-v4l: reduce kernel stack usage")
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
drivers/staging/media/ipu3/ipu3-v4l2.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/media/ipu3/ipu3-v4l2.c b/drivers/staging/media/ipu3/ipu3-v4l2.c
index 60aa02eb7d2a..35a74d99322f 100644
--- a/drivers/staging/media/ipu3/ipu3-v4l2.c
+++ b/drivers/staging/media/ipu3/ipu3-v4l2.c
@@ -693,6 +693,13 @@ static int imgu_fmt(struct imgu_device *imgu, unsigned int pipe, int node,
if (inode == IMGU_NODE_STAT_3A || inode == IMGU_NODE_PARAMS)
continue;

+ /* CSS expects some format on OUT queue */
+ if (i != IPU3_CSS_QUEUE_OUT &&
+ !imgu_pipe->nodes[inode].enabled) {
+ fmts[i] = NULL;
+ continue;
+ }
+
if (try) {
fmts[i] = kmemdup(&imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp,
sizeof(struct v4l2_pix_format_mplane),
@@ -705,10 +712,6 @@ static int imgu_fmt(struct imgu_device *imgu, unsigned int pipe, int node,
fmts[i] = &imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp;
}

- /* CSS expects some format on OUT queue */
- if (i != IPU3_CSS_QUEUE_OUT &&
- !imgu_pipe->nodes[inode].enabled)
- fmts[i] = NULL;
}

if (!try) {
--
2.31.0.rc2.261.g7f71774620-goog
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