On Sat, Jan 08, 2022 at 05:58:12PM +0100, José Expósito wrote:
> Avoid leaking the "out" variable if it is not possible to allocate
> the "txmsg" variable.
>
> Fixes: 09234b88ef55 ("drm/selftests/test-drm_dp_mst_helper: Move
> 'sideband_msg_req_encode_decode' onto the heap")
> Addresses-Coverity-ID: 1475685 ("Resource leak")
> Signed-off-by: José Expósito <[email protected]>
>
> ---
>
> v2: Improve commit message
Applied to drm-misc-next, thanks.
-Daniel
> ---
> drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c
> b/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c
> index 6b4759ed6bfd..c491429f1a02 100644
> --- a/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c
> +++ b/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c
> @@ -131,8 +131,10 @@ sideband_msg_req_encode_decode(struct
> drm_dp_sideband_msg_req_body *in)
> return false;
>
> txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
> - if (!txmsg)
> + if (!txmsg) {
> + kfree(out);
> return false;
> + }
>
> drm_dp_encode_sideband_req(in, txmsg);
> ret = drm_dp_decode_sideband_req(txmsg, out);
> --
> 2.25.1
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
