From: Christian König Date: Thu, 29 Nov 2018 15:25:10 +0000 (+0100) Subject: drm/ttm: fix LRU handling in ttm_buffer_object_transfer X-Git-Tag: rel_imx_4.19.35_1.1.0~7728 X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=546486c5b196423d7a2109583ae4c516954b2932;p=linux.git 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 Acked-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 046a6dda690a..40904e84f883 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -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; /**