diff mbox series

[v2,2/6] mm, hwpoison: fix page refcnt leaking in unpoison_memory()

Message ID 20220823032346.4260-3-linmiaohe@huawei.com (mailing list archive)
State New
Headers show
Series A few fixup patches for memory-failure | expand

Commit Message

Miaohe Lin Aug. 23, 2022, 3:23 a.m. UTC 
When free_raw_hwp_pages() fails its work, the refcnt of the hugetlb page
would have been incremented if ret > 0. Using put_page() to fix refcnt
leaking in this case.

Fixes: debb6b9c3fdd ("mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
---
 mm/memory-failure.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 9d1ebfef04ee..ecd42d717c6f 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -2378,6 +2378,7 @@  int unpoison_memory(unsigned long pfn)
 			count = free_raw_hwp_pages(page, false);
 			if (count == 0) {
 				ret = -EBUSY;
+				put_page(page);
 				goto unlock_mutex;
 			}
 		}