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Revert "drm/amdgpu: fix a potential deadlock in amdgpu_bo_create_restricted()" 

This reverts commit 38fc4856ad, which
introduces a use-after-free.

The underlying bug should be properly fixed with "drm/ttm: never add BO
that failed to validate to the LRU list".

Cc: zhoucm1 <david1.zhou@amd.com>
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Tested-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicolai Hähnle 2017-02-14 09:47:36 +01:00 committed by Alex Deucher
parent c2c139cf43
commit b9d022c630
1 changed files with 1 additions and 4 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@ -411,11 +411,8 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
amdgpu_cs_report_moved_bytes(adev,
atomic64_read(&adev->num_bytes_moved) - initial_bytes_moved);
if (unlikely(r != 0)) {
if (!resv)
ww_mutex_unlock(&bo->tbo.resv->lock);
if (unlikely(r != 0))
return r;
}
bo->tbo.priority = ilog2(bo->tbo.num_pages);
if (kernel)