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drm/amdkfd: fix a potential ttm->sg memory leak
author
Lang Yu
<lang.yu@amd.com>
Wed, 29 Sep 2021 06:54:39 +0000
(14:54 +0800)
committer
Alex Deucher
<alexander.deucher@amd.com>
Mon, 4 Oct 2021 19:23:02 +0000
(15:23 -0400)
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>
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
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diff --git
a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index
2d6b2d7
..
054c1a2
100644
(file)
--- 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;
}