linux-kernel - Re: cifs mount regression in 4.8 and 4.4 stable

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Date:   Thu, 17 Nov 2016 10:47:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Seth Forshee <seth.forshee@...onical.com>
Cc:     Sachin Prabhu <sprabhu@...hat.com>,
        Steve French <sfrench@...ba.org>,
        Aurelien Aptel <aaptel@...e.com>, linux-cifs@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: cifs mount regression in 4.8 and 4.4 stable

On Fri, Sep 23, 2016 at 07:01:45AM -0500, Seth Forshee wrote:
> On Thu, Sep 22, 2016 at 10:27:56AM -0500, Seth Forshee wrote:
> > On Thu, Sep 22, 2016 at 04:17:09PM +0100, Sachin Prabhu wrote:
> > > On Thu, 2016-09-22 at 10:09 -0500, Seth Forshee wrote:
> > > > We've received reports from users of a cifs mount regression in our
> > > > 4.4-based kernel, e.g. [1]. It is fixed by reverting the follwing
> > > > commit
> > > > from 4.8 which was applied to 4.4 stable:
> > > > 
> > > >  a6b5058 fs/cifs: make share unaccessible at root level mountable
> > > > 
> > > > Testing against 4.8-rc7 shows that the problem is present there as
> > > > well.
> > > > 
> > > > Thanks,
> > > > Seth
> > > > 
> > > > [1] http://bugs.launchpad.net/bugs/1626112
> > > 
> > > Hello Seth, 
> > > 
> > > We have identified some regressions introduced by the mentioned patch
> > > These include
> > 
> > I saw those, but none of the ones already in Linus's tree fix the
> > problem.
> > 
> > > a) mounting of DFS shares breaks. The fix is included in Steve's tree
> > > at
> > > https://git.samba.org/?p=sfrench/cifs-2.6.git;a=commit;h=de5233745cd59c
> > > f5853d963ad216067788a87594
> > 
> > However this one isn't in Linus's tree yet.
> > 
> > I'm not certain what circumstances cause the failure, but based on what
> > I see in dmesg it looks likely that this one is the fix. I'll get some
> > testing with this applied.
> 
> Looks like this is is the fix we need. Thanks for your help.

What ever happened with this?  Did the patch end up in Linus's tree?  If
so, what was the git commit id?

thanks,

greg k-h