linux-kernel - RE: [PATCH 1/1] Ddrivers: hv: Turn off write permission on the hypercall page

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Message-ID: <DM5PR03MB2490CAE35B6B93D234D60C97A0440@DM5PR03MB2490.namprd03.prod.outlook.com>
Date:   Fri, 10 Feb 2017 15:15:27 +0000
From:   KY Srinivasan <kys@...rosoft.com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        "olaf@...fle.de" <olaf@...fle.de>,
        "apw@...onical.com" <apw@...onical.com>,
        "vkuznets@...hat.com" <vkuznets@...hat.com>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        "leann.ogasawara@...onical.com" <leann.ogasawara@...onical.com>,
        "keescook@...gle.com" <keescook@...gle.com>,
        "stephen@...workplumber.org" <stephen@...workplumber.org>,
        "sds@...ho.nsa.gov" <sds@...ho.nsa.gov>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: RE: [PATCH 1/1] Ddrivers: hv: Turn off write permission on the
 hypercall page



> -----Original Message-----
> From: Greg KH [mailto:gregkh@...uxfoundation.org]
> Sent: Friday, February 10, 2017 6:48 AM
> To: KY Srinivasan <kys@...rosoft.com>
> Cc: linux-kernel@...r.kernel.org; devel@...uxdriverproject.org;
> olaf@...fle.de; apw@...onical.com; vkuznets@...hat.com;
> jasowang@...hat.com; leann.ogasawara@...onical.com;
> keescook@...gle.com; stephen@...workplumber.org; sds@...ho.nsa.gov;
> stable@...r.kernel.org
> Subject: Re: [PATCH 1/1] Ddrivers: hv: Turn off write permission on the
> hypercall page
> 
> On Wed, Feb 08, 2017 at 06:30:56PM -0700, kys@...hange.microsoft.com
> wrote:
> > From: K. Y. Srinivasan <kys@...rosoft.com>
> >
> > The hypercall page only needs to be executable but currently it is setup to
> > be writable as well. Fix the issue.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> 
> I had to hand-edit the subject: line, please be more careful :(

Thanks; will do.

K. Y