From: Cody P Schafer <jmes...@gmail.com>
Freeing pages to uninitialized zones is not handled by
__free_one_page(), and should never happen when the code is correct.
Ran into this while writing some code that dynamically onlines extra
zones.
Signed-off-by: Cody P Schafer <c...@linux.vnet.ibm.com>
---
mm/page_alloc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index df2022f..da5a5ec 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -532,6 +532,8 @@ static inline void __free_one_page(struct page *page,
unsigned long uninitialized_var(buddy_idx);
struct page *buddy;
+ VM_BUG_ON(!zone_is_initialized(zone));
+
if (unlikely(PageCompound(page)))
if (unlikely(destroy_compound_page(page, order)))
return;
--
1.8.0.3
--
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