From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:39488 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753118AbdCXPMA (ORCPT ); Fri, 24 Mar 2017 11:12:00 -0400 Subject: Patch "gfs2: Avoid alignment hole in struct lm_lockname" has been added to the 4.10-stable tree To: agruenba@redhat.com, gregkh@linuxfoundation.org, rpeterso@redhat.com Cc: , From: Date: Fri, 24 Mar 2017 16:02:01 +0100 Message-ID: <149036772110485@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 gfs2: Avoid alignment hole in struct lm_lockname to the 4.10-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: gfs2-avoid-alignment-hole-in-struct-lm_lockname.patch and it can be found in the queue-4.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 28ea06c46fbcab63fd9a55531387b7928a18a590 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Mon, 6 Mar 2017 12:58:42 -0500 Subject: gfs2: Avoid alignment hole in struct lm_lockname From: Andreas Gruenbacher commit 28ea06c46fbcab63fd9a55531387b7928a18a590 upstream. Commit 88ffbf3e03 switches to using rhashtables for glocks, hashing over the entire struct lm_lockname instead of its individual fields. On some architectures, struct lm_lockname contains a hole of uninitialized memory due to alignment rules, which now leads to incorrect hash values. Get rid of that hole. Signed-off-by: Andreas Gruenbacher Signed-off-by: Bob Peterson Signed-off-by: Greg Kroah-Hartman --- fs/gfs2/incore.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -207,7 +207,7 @@ struct lm_lockname { struct gfs2_sbd *ln_sbd; u64 ln_number; unsigned int ln_type; -}; +} __packed __aligned(sizeof(int)); #define lm_name_equal(name1, name2) \ (((name1)->ln_number == (name2)->ln_number) && \ Patches currently in stable-queue which might be from agruenba@redhat.com are queue-4.10/gfs2-avoid-alignment-hole-in-struct-lm_lockname.patch