linux-kernel - Re: [PATCH v2 3/6] kvm: Sanitize KVM

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Message-ID: <4FEC4FAF.8030700@redhat.com>
Date:	Thu, 28 Jun 2012 15:35:59 +0300
From:	Avi Kivity <avi@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
CC:	Alex Williamson <alex.williamson@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, jan.kiszka@...mens.com
Subject: Re: [PATCH v2 3/6] kvm: Sanitize KVM_IRQFD flags

On 06/27/2012 12:21 PM, Michael S. Tsirkin wrote:
> On Tue, Jun 26, 2012 at 11:09:32PM -0600, Alex Williamson wrote:
>> We only know of one so far.
>> 
>> Signed-off-by: Alex Williamson <alex.williamson@...hat.com>
> 
> Ugh. So we have a bug: we should have sanitized the fields.
> If there's buggy userspace that only set the low bit
> it will break with this change.
> Is it too late now? Do we need KVM_IRQFD2 which
> sanitized fields properly? Avi?

We try and see.  Commit this, if somebody complain, revert after
apologizing profusely.  If no one notices, we can claim those bits.



-- 
error compiling committee.c: too many arguments to function


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