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-rw-r--r--src/mesa/drivers/dri/common/dri_bufmgr_fake.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/common/dri_bufmgr_fake.c b/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
index 5cd96f0821..f022552ed8 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
+++ b/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
@@ -665,6 +665,7 @@ dri_fake_bo_unreference(dri_bo *bo)
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
if (--bo_fake->refcount == 0) {
+ assert(bo_fake->map_count == 0);
/* No remaining references, so free it */
if (bo_fake->block)
free_block(bufmgr_fake, bo_fake->block);