From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx196.postini.com [74.125.245.196]) by kanga.kvack.org (Postfix) with SMTP id DB57A6B004D for ; Fri, 13 Apr 2012 09:52:08 -0400 (EDT) Date: Fri, 13 Apr 2012 08:52:05 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH 2/2] mm: fix NULL ptr dereference in move_pages In-Reply-To: <1334321902-7143-2-git-send-email-levinsasha928@gmail.com> Message-ID: References: <1334321902-7143-1-git-send-email-levinsasha928@gmail.com> <1334321902-7143-2-git-send-email-levinsasha928@gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Sasha Levin Cc: akpm@linux-foundation.org, hughd@google.com, dave@linux.vnet.ibm.com, ebiederm@xmission.com, davej@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org On Fri, 13 Apr 2012, Sasha Levin wrote: > Commit 3268c63 ("mm: fix move/migrate_pages() race on task struct") has added > an odd construct where 'mm' is checked for being NULL, and if it is, it would > get dereferenced anyways by mput()ing it. Acked-by: Christoph Lameter -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org