Re: [PATCH v4 3/5] accel/amdxdna: do not warn when a sync request is rejected

[Lizhi Hou]

On 8/17/26 16:07, Taimuraz Kaitmazov wrote:
> amdxdna_drm_sync_bo_ioctl() answers a failed amdxdna_flush_bo() with
> drm_WARN(). Both of that function's error returns are decided by the
> ioctl's arguments, so SYNC_BO with an offset past the end of the BO
> splats and taints the kernel from an unprivileged caller.
>
> Log it like the pin failure above it.
>
> Signed-off-by: Taimuraz Kaitmazov <taimuraz@xxxxxxxxxxxxx>
> ---
>   drivers/accel/amdxdna/amdxdna_gem.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/accel/amdxdna/amdxdna_gem.c b/drivers/accel/amdxdna/amdxdna_gem.c
> index 77a9493cd7ba..4f38f985c74e 100644
> --- a/drivers/accel/amdxdna/amdxdna_gem.c
> +++ b/drivers/accel/amdxdna/amdxdna_gem.c
> @@ -1310,7 +1310,7 @@ int amdxdna_drm_sync_bo_ioctl(struct drm_device *dev,
>   		amdxdna_gem_unpin(abo);
>   
>   		if (ret) {
> -			drm_WARN(&xdna->ddev, 1, "Can not get flush memory");
> +			XDNA_ERR(xdna, "Flush BO %d failed, ret %d", args->handle, ret);

Should it be XDNA_DBG?


Lizhi

>   			goto put_obj;
>   		}
>   	}