6.6-stable review patch. If anyone has any objections, please let me know.
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From: Lang Yu lang.yu@amd.com
[ Upstream commit 46186667f98fb7158c98f4ff5da62c427761ffcd ]
Free sg table when dma_map_sgtable() failed to avoid memory leak.
Signed-off-by: Lang Yu lang.yu@amd.com Reviewed-by: Alex Deucher alexander.deucher@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_ttm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 8c3fb1562ffef..6f06183e82b2b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -794,7 +794,7 @@ static int amdgpu_ttm_tt_pin_userptr(struct ttm_device *bdev, /* Map SG to device */ r = dma_map_sgtable(adev->dev, ttm->sg, direction, 0); if (r) - goto release_sg; + goto release_sg_table;
/* convert SG to linear array of pages and dma addresses */ drm_prime_sg_to_dma_addr_array(ttm->sg, gtt->ttm.dma_address, @@ -802,6 +802,8 @@ static int amdgpu_ttm_tt_pin_userptr(struct ttm_device *bdev,
return 0;
+release_sg_table: + sg_free_table(ttm->sg); release_sg: kfree(ttm->sg); ttm->sg = NULL;