| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.14 095/151] drm/amdkfd: fix a potential ttm->sg memory leak | Date | Mon, 11 Oct 2021 15:46:07 +0200 |
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From: Lang Yu <lang.yu@amd.com>
[ Upstream commit b072ef1215aca33186e3a10109e872e528a9e516 ]
Memory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr, but isn't freed by kfree in kfd_mem_dmaunmap_userptr. Free it!
Fixes: 264fb4d332f5 ("drm/amdgpu: Add multi-GPU DMA mapping helpers")
Signed-off-by: Lang Yu <lang.yu@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index 4fb15750b9bb..b18c0697356c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -563,6 +563,7 @@ kfd_mem_dmaunmap_userptr(struct kgd_mem *mem, dma_unmap_sgtable(adev->dev, ttm->sg, direction, 0); sg_free_table(ttm->sg); + kfree(ttm->sg); ttm->sg = NULL; } -- 2.33.0
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