From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx130.postini.com [74.125.245.130]) by kanga.kvack.org (Postfix) with SMTP id 62E2A6B0082 for ; Sun, 27 May 2012 16:45:50 -0400 (EDT) Received: by obbwd18 with SMTP id wd18so6196171obb.14 for ; Sun, 27 May 2012 13:45:49 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: <1337884054.3292.22.camel@lappy> <20120524120727.6eab2f97.akpm@linux-foundation.org> From: Sasha Levin Date: Sun, 27 May 2012 22:45:28 +0200 Message-ID: Subject: Re: mm: kernel BUG at mm/memory.c:1230 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Hugh Dickins Cc: Andrew Morton , viro , oleg@redhat.com, "a.p.zijlstra" , mingo , Dave Jones , "linux-kernel@vger.kernel.org" , linux-mm , Andrea Arcangeli On Sat, May 26, 2012 at 10:26 PM, Hugh Dickins wrote: > I'm keeping off the linux-next for the moment; I'll worry about this > more if it shows up when we try 3.5-rc1. =A0Your fuzzing tells that my > logic above is wrong, but maybe it's just a passing defect in next. I have a theory about this, which might explain it. After a couple of days of not being able to reproduce it, I've decided to revert Mel Gorman's patch related to memory corruption in mbind(). Once I've reverted it, I wasn't able to reproduce this exact case, but did observe several other interesting things: - The original mbind() memory corruption. - Corruption in eventfd related structures (same dump as the mbind one, but about eventfd structure). - Same as above, but with flock. - Hit a different BUG() in mm/mempolicy.c (The one at the end of slab_node= ()). Is it possible that this issue could be explained by a corruption related to the mbind() issue? -- 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