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Subject: media: staging/intel-ipu3: Fix memory leak in imu_fmt Author: Ricardo Ribalda ribalda@chromium.org Date: Mon Mar 15 13:34:05 2021 +0100

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 Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.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 e8944e489c56..9e8980b34547 100644 --- a/drivers/staging/media/ipu3/ipu3-v4l2.c +++ b/drivers/staging/media/ipu3/ipu3-v4l2.c @@ -694,6 +694,13 @@ 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), @@ -706,10 +713,6 @@ 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) {