Patch "mm/memory-failure: fix an incorrect use of tail pages" has been added to the 5.10-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    mm/memory-failure: fix an incorrect use of tail pages

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mm-memory-failure-fix-an-incorrect-use-of-tail-pages.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From liushixin2@huawei.com  Sat Mar 30 10:10:31 2024
From: Liu Shixin <liushixin2@huawei.com>
Date: Thu, 7 Mar 2024 20:48:41 +0800
Subject: mm/memory-failure: fix an incorrect use of tail pages
To: Matthew Wilcox <willy@infradead.org>, Andrew Morton <akpm@linux-foundation.org>, Sasha Levin <sashal@kernel.org>, Dan Williams <dan.j.williams@intel.com>, Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>, <stable@vger.kernel.org>, Liu Shixin <liushixin2@huawei.com>
Message-ID: <20240307124841.2838010-1-liushixin2@huawei.com>

From: Liu Shixin <liushixin2@huawei.com>

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@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 mm/memory-failure.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1075,7 +1075,7 @@ static bool hwpoison_user_mappings(struc
 				unmap_success = false;
 			}
 		} else {
-			unmap_success = try_to_unmap(p, ttu);
+			unmap_success = try_to_unmap(hpage, ttu);
 		}
 	}
 	if (!unmap_success)


Patches currently in stable-queue which might be from liushixin2@huawei.com are

queue-5.10/mm-memory-failure-fix-an-incorrect-use-of-tail-pages.patch