linux-kernel - Re: [PATCH 2/7] sched: Fix picking a task switching on other cpu (__ARCH_WANT_UNLOCKED

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: <20140920190347.GF3037@worktop.localdomain>
Date:	Sat, 20 Sep 2014 21:03:47 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Kirill Tkhai <tkhai@...dex.ru>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Kirill Tkhai <ktkhai@...allels.com>
Subject: Re: [PATCH 2/7] sched: Fix picking a task switching on other cpu
 (__ARCH_WANT_UNLOCKED_CTXSW)

On Sat, Sep 20, 2014 at 08:33:26PM +0200, Peter Zijlstra wrote:
> On Sat, Sep 20, 2014 at 08:51:22PM +0400, Kirill Tkhai wrote:
> > From: Kirill Tkhai <ktkhai@...allels.com>
> > 
> > We may pick a task which is in context_switch() on other cpu at the moment.
> > Parallel using of a single stack by two processes is not a good idea.
> 
> Please elaborate on who exactly that might happen. Its best to have
> comprehensive changelogs for issues that fix races.

typing hard, ugh. s/who/how/
--
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/