From df05e98db31755210d5c602e10226f55e002ba26 Mon Sep 17 00:00:00 2001 From: Miaohe Lin Date: Thu, 18 Aug 2022 21:00:12 +0800 Subject: [PATCH] mm, hwpoison: fix page refcnt leaking in unpoison_memory() 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. Link: https://lkml.kernel.org/r/20220818130016.45313-3-linmiaohe@huawei.com Fixes: debb6b9c3fdd ("mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage") Signed-off-by: Miaohe Lin Acked-by: Naoya Horiguchi Signed-off-by: Andrew Morton --- mm/memory-failure.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 22840cd5fe59..0c5ad7505b99 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; } } -- 2.50.1