linux-kernel - Re: [PATCH] drm/amdkfd: Fix memory leakage

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Date:   Mon, 28 Nov 2022 23:13:48 -0500
From:   Felix Kuehling <felix.kuehling@....com>
To:     Konstantin Meskhidze <konstantin.meskhidze@...wei.com>
Cc:     alexander.deucher@....com, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        sumit.semwal@...aro.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, yusongping@...wei.com,
        hukeping@...wei.com, artem.kuzin@...wei.com
Subject: Re: [PATCH] drm/amdkfd: Fix memory leakage

Am 2022-11-28 um 22:47 schrieb Konstantin Meskhidze:
> This patch fixes potential memory leakage and seg fault
> in  _gpuvm_import_dmabuf() function
>
> Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@...wei.com>

Thank you for the patch. I'm adding a Fixes tag and pushing the patch to 
amd-staging-drm-next.

Fixes: d4ec4bdc0bd5 ("drm/amdkfd: Allow access for mmapping KFD BOs")
Reviewed-by: Felix Kuehling <Felix.Kuehling@....com>


> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
> index 978d3970b5cc..e0084f712e02 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
> @@ -2257,7 +2257,7 @@ int amdgpu_amdkfd_gpuvm_import_dmabuf(struct amdgpu_device *adev,
>   
>   	ret = drm_vma_node_allow(&obj->vma_node, drm_priv);
>   	if (ret) {
> -		kfree(mem);
> +		kfree(*mem);
>   		return ret;
>   	}
>