On Wed, 18 Nov 2020, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> Currently when txmsg fails to allocate then there is a leak on 'out'. Fix
> this by setting result to false and exiting via the clean up exit path.
> Note since txmsg is NULL at this point, the kfree of txmsg is a no-op.
>
> Addresses-Coverity: ("Resource leak")
> Fixes: 09234b88ef55 ("drm/selftests/test-drm_dp_mst_helper: Move 'sideband_msg_req_encode_decode' onto the heap")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
This is fixed in my local branch.
Looks like the wrong version of the patch was sent/applied.
Either way, thanks for the fix Colin.
Reviewed-by: Lee Jones <lee.jones@xxxxxxxxxx>
> 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..dbac073ed385 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)
> - return false;
> + if (!txmsg) {
> + result = false;
> + goto out;
> + }
>
> drm_dp_encode_sideband_req(in, txmsg);
> ret = drm_dp_decode_sideband_req(txmsg, out);
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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