linux-kernel - Re: [PATCH] stop_machine: fix race with return value (fixes Bug #11989)

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Message-ID: <20081117094618.GA4296@osiris.boeblingen.de.ibm.com>
Date:	Mon, 17 Nov 2008 10:46:18 +0100
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [PATCH] stop_machine: fix race with return value (fixes Bug
	#11989)

On Mon, Nov 17, 2008 at 08:22:18AM +1030, Rusty Russell wrote:
> Bug #11989: Suspend failure on NForce4-based boards due to chanes in stop_machine
> 
> We should not access active.fnret outside the lock; in theory the next
> stop_machine could overwrite it.
> 
> Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
> Tested-by: "Rafael J. Wysocki" <rjw@...k.pl>
> ---
>  kernel/stop_machine.c |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

Thank you, Rusty, for finding and fixing this one as well!
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