Messages in this thread Patch in this message | | | From | Miaohe Lin <> | Subject | [PATCH v2 2/6] mm, hwpoison: fix page refcnt leaking in unpoison_memory() | Date | Tue, 23 Aug 2022 11:23:42 +0800 |
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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 --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; } } -- 2.23.0
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