From: Christian König <christian.koenig@xxxxxxx> [ Upstream commit a2848d08742c8e8494675892c02c0d22acbe3cf8 ] There is a small window where we have already incremented the pin count but not yet moved the bo from the lru to the pinned list. Signed-off-by: Christian König <christian.koenig@xxxxxxx> Reported-by: Pelloux-Prayer, Pierre-Eric <Pierre-eric.Pelloux-prayer@xxxxxxx> Tested-by: Pelloux-Prayer, Pierre-Eric <Pierre-eric.Pelloux-prayer@xxxxxxx> Acked-by: Alex Deucher <alexander.deucher@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Link: https://patchwork.freedesktop.org/patch/msgid/20230707120826.3701-1-christian.koenig@xxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/ttm/ttm_bo.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 9a05caec3c996..dca4dfdd332d3 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -672,6 +672,12 @@ static bool ttm_bo_evict_swapout_allowable(struct ttm_buffer_object *bo, { bool ret = false; + if (bo->pin_count) { + *locked = false; + *busy = false; + return false; + } + if (bo->base.resv == ctx->resv) { dma_resv_assert_held(bo->base.resv); if (ctx->flags & TTM_OPT_FLAG_ALLOW_RES_EVICT) -- 2.39.2
