Re: [PATCH] drm/amdgpu: Fix missing unlocking in an error path in amdgpu_userq_create()

[Alex Deucher <alexdeucher@gmail.com>]

On Wed, Jul 9, 2025 at 3:28 PM Christophe JAILLET
<christophe.jaillet@wanadoo.fr> wrote:
>
> If kasprintf() fails, some mutex still need to be released to avoid locking
> issue, as already done in all other error handling path.
>
> Fixes: c03ea34cbf88 ("drm/amdgpu: add support of debugfs for mqd information")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
and pushed out to drm-misc-next.

Alex

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
> index 513bbc543f40..bce97318965c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
> @@ -520,8 +520,10 @@ amdgpu_userq_create(struct drm_file *filp, union drm_amdgpu_userq *args)
>         }
>
>         queue_name = kasprintf(GFP_KERNEL, "queue-%d", qid);
> -       if (!queue_name)
> -               return -ENOMEM;
> +       if (!queue_name) {
> +               r = -ENOMEM;
> +               goto unlock;
> +       }
>
>         /* Queue dentry per client to hold MQD information   */
>         queue->debugfs_queue = debugfs_create_dir(queue_name, filp->debugfs_client);
> --
> 2.50.0
>