linux-kernel - Re: Memory corruption due to word sharing

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

Message-ID: <20120203201911.GL2382@linux.vnet.ibm.com>
Date:	Fri, 3 Feb 2012 12:19:11 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Andrew MacLeod <amacleod@...hat.com>,
	Torvald Riegel <triegel@...hat.com>, Jan Kara <jack@...e.cz>,
	LKML <linux-kernel@...r.kernel.org>, linux-ia64@...r.kernel.org,
	dsterba@...e.cz, ptesarik@...e.cz, rguenther@...e.de,
	gcc@....gnu.org
Subject: Re: Memory corruption due to word sharing

On Fri, Feb 03, 2012 at 12:00:03PM -0800, Linus Torvalds wrote:
> On Fri, Feb 3, 2012 at 11:16 AM, Andrew MacLeod <amacleod@...hat.com> wrote:

[ . . . ]

> Having access to __ATOMIC_ACQUIRE would actually be an improvement -
> it's just that the architectures that really care about things like
> that simply don't matter enough for us to really worry about them
> (ia64 being the prime example), and everybody else either doesn't need
> extra barriers at all (x86), or might as well use a full barrier (most
> everything else).

I believe that version 8 of the ARM architecture will provide load-acquire
and store-release instructions.

							Thanx, Paul

--
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/