From: "Antonino A. Daplas" <adaplas@gmail.com>
To: spock@gentoo.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-fbdev-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH resend] vt: fix potential race in VT_WAITACTIVE handler
Date: Mon, 02 Apr 2007 07:39:07 +0800 [thread overview]
Message-ID: <1175470747.7772.14.camel@daplas> (raw)
In-Reply-To: <20070401124323.GA4040@spock.one.pl>
On Sun, 2007-04-01 at 14:43 +0200, Michal Januszewski wrote:
> From: Michal Januszewski <spock@gentoo.org>
>
> On a multiprocessor machine the VT_WAITACTIVE ioctl call may return 0
> if fg_console has already been updated in redraw_screen() but the
> console switch itself hasn't been completed. Fix this by checking
> fg_console in vt_waitactive() with the console sem held.
>
> Signed-off-by: Michal Januszewski <spock@gentoo.org>
Acked-by: Antonino Daplas <adaplas@pol.net>
Andrew,
Drop the old version I sent to you.
Tony
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WARNING: multiple messages have this Message-ID (diff)
From: "Antonino A. Daplas" <adaplas@gmail.com>
To: spock@gentoo.org
Cc: linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
linux-fbdev-devel@lists.sourceforge.net
Subject: Re: [PATCH resend] vt: fix potential race in VT_WAITACTIVE handler
Date: Mon, 02 Apr 2007 07:39:07 +0800 [thread overview]
Message-ID: <1175470747.7772.14.camel@daplas> (raw)
In-Reply-To: <20070401124323.GA4040@spock.one.pl>
On Sun, 2007-04-01 at 14:43 +0200, Michal Januszewski wrote:
> From: Michal Januszewski <spock@gentoo.org>
>
> On a multiprocessor machine the VT_WAITACTIVE ioctl call may return 0
> if fg_console has already been updated in redraw_screen() but the
> console switch itself hasn't been completed. Fix this by checking
> fg_console in vt_waitactive() with the console sem held.
>
> Signed-off-by: Michal Januszewski <spock@gentoo.org>
Acked-by: Antonino Daplas <adaplas@pol.net>
Andrew,
Drop the old version I sent to you.
Tony
next prev parent reply other threads:[~2007-04-01 23:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-01 12:43 [PATCH resend] vt: fix potential race in VT_WAITACTIVE handler Michal Januszewski
2007-04-01 12:43 ` Michal Januszewski
2007-04-01 23:39 ` Antonino A. Daplas [this message]
2007-04-01 23:39 ` Antonino A. Daplas
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