Commit 546486c5 authored Nov 29, 2018 by Christian König Committed by Greg Kroah-Hartman Dec 21, 2018

drm/ttm: fix LRU handling in ttm_buffer_object_transfer



[ Upstream commit d6e820fcd4cf08b11d291a1dd7bbd0636914647c ]

We need to set the NO_EVICT flag on the ghost object or otherwise we are
adding it to the LRU.

When it is added to the LRU we can run into a race between destroying
and evicting it again.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 01ba4fd9

drivers/gpu/drm/ttm/ttm_bo_util.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -492,8 +492,10 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
		if (!fbo)
		return -ENOMEM;

		ttm_bo_get(bo);
		fbo->base = *bo;
		fbo->base.mem.placement \|= TTM_PL_FLAG_NO_EVICT;

		ttm_bo_get(bo);
		fbo->bo = bo;

		/**