[merged mm-stable] mm-hwpoison-fix-page-refcnt-leaking-in-unpoison_memory.patch removed from -mm tree

[merged mm-stable] mm-hwpoison-fix-page-refcnt-leaking-in-unpoison_memory.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm, hwpoison: fix page refcnt leaking in unpoison_memory()
has been removed from the -mm tree.  Its filename was
     mm-hwpoison-fix-page-refcnt-leaking-in-unpoison_memory.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm, hwpoison: fix page refcnt leaking in unpoison_memory()
Date: Thu, 18 Aug 2022 21:00:12 +0800

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 <linmiaohe@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory-failure.c |    1 +
 1 file changed, 1 insertion(+)

--- a/mm/memory-failure.c~mm-hwpoison-fix-page-refcnt-leaking-in-unpoison_memory
+++ a/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;
 			}
 		}
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-hwpoison-use-clearpagehwpoison-in-memory_failure.patch
mm-hwpoison-use-__pagemovable-to-detect-non-lru-movable-pages.patch
mm-hwpoison-use-num_poisoned_pages_sub-to-decrease-num_poisoned_pages.patch
mm-hwpoison-avoid-unneeded-page_mapped_in_vma-overhead-in-collect_procs_anon.patch
mm-hwpoison-check-pagetable-explicitly-in-hwpoison_user_mappings.patch
mm-hwpoison-cleanup-some-obsolete-comments.patch
writeback-remove-unused-macro-dirty_full_scope.patch