Hello Christian König,
This is a semi-automatic email about new static checker warnings.
The patch a1f091f8ef2b: "drm/ttm: switch to per device LRU lock" from
Oct 6, 2020, leads to the following Smatch complaint:
drivers/gpu/drm/ttm/ttm_bo.c:665 ttm_mem_evict_first()
error: we previously assumed 'bo' could be null (see line 662)
drivers/gpu/drm/ttm/ttm_bo.c
661
662 if (!bo) {
^^
"bo" is NULL
663 if (busy_bo && !ttm_bo_get_unless_zero(busy_bo))
664 busy_bo = NULL;
665 spin_unlock(&bo->bdev->lru_lock);
^^^^^^^^^^^^^^^^^^
Dereference
666 ret = ttm_mem_evict_wait_busy(busy_bo, ctx, ticket);
667 if (busy_bo)
regards,
dan carpenter
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