From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:56062 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752052AbbHSP4j (ORCPT ); Wed, 19 Aug 2015 11:56:39 -0400 Subject: Patch "mm/hwpoison: fix page refcount of unknown non LRU page" has been added to the 4.1-stable tree To: wanpeng.li@hotmail.com, akpm@linux-foundation.org, gregkh@linuxfoundation.org, n-horiguchi@ah.jp.nec.com, torvalds@linux-foundation.org Cc: , From: Date: Wed, 19 Aug 2015 08:56:38 -0700 Message-ID: <143999979811932@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled mm/hwpoison: fix page refcount of unknown non LRU page to the 4.1-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-hwpoison-fix-page-refcount-of-unknown-non-lru-page.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 4f32be677b124a49459e2603321c7a5605ceb9f8 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Fri, 14 Aug 2015 15:34:56 -0700 Subject: mm/hwpoison: fix page refcount of unknown non LRU page From: Wanpeng Li commit 4f32be677b124a49459e2603321c7a5605ceb9f8 upstream. After trying to drain pages from pagevec/pageset, we try to get reference count of the page again, however, the reference count of the page is not reduced if the page is still not on LRU list. Fix it by adding the put_page() to drop the page reference which is from __get_any_page(). Signed-off-by: Wanpeng Li Acked-by: Naoya Horiguchi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- mm/memory-failure.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1558,6 +1558,8 @@ static int get_any_page(struct page *pag */ ret = __get_any_page(page, pfn, 0); if (!PageLRU(page)) { + /* Drop page reference which is from __get_any_page() */ + put_page(page); pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n", pfn, page->flags); return -EIO; Patches currently in stable-queue which might be from wanpeng.li@hotmail.com are queue-4.1/mm-hwpoison-fix-fail-isolate-hugetlbfs-page-w-refcount-held.patch queue-4.1/mm-hwpoison-fix-page-refcount-of-unknown-non-lru-page.patch