linux-kernel - Re: [PATCH] [BUGFIX] update mm->owner even if no next owner.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <alpine.LSU.2.00.1106130655530.28913@sister.anvils>
Date:	Mon, 13 Jun 2011 07:03:03 -0700 (PDT)
From:	Hugh Dickins <hughd@...gle.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
cc:	Johannes Weiner <hannes@...xchg.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Ying Han <yinghan@...gle.com>, Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] [BUGFIX] update mm->owner even if no next owner.

On Mon, 13 Jun 2011, KAMEZAWA Hiroyuki wrote:
> On Sun, 12 Jun 2011 18:41:58 -0700 (PDT)
> Hugh Dickins <hughd@...gle.com> wrote:
> > 
> > The version I've signed off and am actually testing is below;
> > but I've not had enough time to spare on the machine which reproduced
> > it before, and another I thought I'd delegate it to last night,
> > failed to reproduce without the patch.  Try again tonight.
> > 
> > Thought I'd better respond despite inadequate testing, given the flaw
> > in the posted patch.  Hope the one below is flawless.
> > 
> 
> Thank you, I'll do test, too.

I confirm it fixes the bug: ran ten hours last night, when a couple
of tries just before without the patch each failed in ten minutes.

(But the load was not testing whether it keeps ownership when it should,
I hope you know a quick check on that: our earlier fixes should fail that.)

Hugh
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/