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Message-ID: <20240307124841.2838010-1-liushixin2@huawei.com>
Date: Thu, 7 Mar 2024 20:48:41 +0800
From: Liu Shixin <liushixin2@...wei.com>
To: Matthew Wilcox <willy@...radead.org>, Andrew Morton
<akpm@...ux-foundation.org>, Sasha Levin <sashal@...nel.org>, Dan Williams
<dan.j.williams@...el.com>, Naoya Horiguchi <n-horiguchi@...jp.nec.com>
CC: <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
<stable@...r.kernel.org>, Liu Shixin <liushixin2@...wei.com>
Subject: [PATCH stable-5.10] mm/memory-failure: fix an incorrect use of tail pages
When backport commit c79c5a0a00a9 to 5.10-stable, there is a mistake change.
The head page instead of tail page should be passed to try_to_unmap(),
otherwise unmap will failed as follows.
Memory failure: 0x121c10: failed to unmap page (mapcount=1)
Memory failure: 0x121c10: recovery action for unmapping failed page: Ignored
Fixes: 70168fdc743b ("mm/memory-failure: check the mapcount of the precise page")
Signed-off-by: Liu Shixin <liushixin2@...wei.com>
---
mm/memory-failure.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index f320ff02cc19..dba2936292cf 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1075,7 +1075,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
unmap_success = false;
}
} else {
- unmap_success = try_to_unmap(p, ttu);
+ unmap_success = try_to_unmap(hpage, ttu);
}
}
if (!unmap_success)
--
2.25.1
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