Double check that we allocated the right amount of scatterlist elements
for our obj->size.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Matthew Auld <matthew.william.auld@xxxxxxxxx>
---
drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 8e33a8bde78a..187444c37bbb 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -62,12 +62,14 @@ fake_get_pages(struct drm_i915_gem_object *obj)
for (sg = pages->sgl; sg; sg = sg_next(sg)) {
unsigned long len = min_t(typeof(rem), rem, BIT(31));
+ GEM_BUG_ON(!len);
sg_set_page(sg, pfn_to_page(PFN_BIAS), len, 0);
sg_dma_address(sg) = page_to_phys(sg_page(sg));
sg_dma_len(sg) = len;
rem -= len;
}
+ GEM_BUG_ON(rem);
obj->mm.madv = I915_MADV_DONTNEED;
return pages;
--
2.11.0
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