linux-kernel - RE: [PATCH 1/1] Drivers: hv: vmbus: Fix a bug in the handling of channel offers

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Date:	Mon, 26 Aug 2013 23:21:04 +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>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: RE: [PATCH 1/1] Drivers: hv: vmbus: Fix a bug in the handling of
 channel offers



> -----Original Message-----
> From: Greg KH [mailto:gregkh@...uxfoundation.org]
> Sent: Monday, August 26, 2013 4:14 PM
> To: KY Srinivasan
> Cc: linux-kernel@...r.kernel.org; devel@...uxdriverproject.org; olaf@...fle.de;
> apw@...onical.com; jasowang@...hat.com; stable@...r.kernel.org
> Subject: Re: [PATCH 1/1] Drivers: hv: vmbus: Fix a bug in the handling of channel
> offers
> 
> On Mon, Aug 26, 2013 at 10:48:16PM +0000, KY Srinivasan wrote:
> >
> >
> > > -----Original Message-----
> > > From: Greg KH [mailto:gregkh@...uxfoundation.org]
> > > Sent: Monday, August 26, 2013 2:57 PM
> > > To: KY Srinivasan
> > > Cc: linux-kernel@...r.kernel.org; devel@...uxdriverproject.org;
> olaf@...fle.de;
> > > apw@...onical.com; jasowang@...hat.com; stable@...r.kernel.org
> > > Subject: Re: [PATCH 1/1] Drivers: hv: vmbus: Fix a bug in the handling of
> channel
> > > offers
> > >
> > > On Mon, Aug 26, 2013 at 02:08:58PM -0700, K. Y. Srinivasan wrote:
> > > > The channel state should be correctly set before registering the device. In
> the
> > > current
> > > > code the driver probe would fail for channels that have been rescinded and
> > > subsequently
> > > > re-offered. Fix the bug.
> > > >
> > > > Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> > > > Cc: <stable@...r.kernel.org>
> > >
> > > What older kernel versions have this bug?  When did it show up?
> >
> > The patch that introduced the bug is:
> >
> > commit e68d2971d26577b932a16333ce165af98a96e068
> > Author: K. Y. Srinivasan <kys@...rosoft.com>
> > Date:   Thu May 23 12:02:32 2013 -0700
> >
> >     Drivers: hv: vmbus: Implement multi-channel support
> >
> > I think 3.10 shipped with this bug.
> 
> Why do you think that, it's not what git shows:
> 	$ git describe --contains e68d2971d26577b932a16333ce165af98a96e068
> 	v3.11-rc1~157^2~64
> 
> So this is a 3.11-only thing, right?

My mistake; I was looking at some version of linux-3.10 code that had this problem and so I assumed it must have shipped
in 3.10.

Regards,

K. Y
> 
> thanks,
> 
> greg k-h
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