linux-kernel - Re: [PATCH 3.18 36/68] Handle mismatched open calls

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Message-ID: <20170722124630.GA6774@kroah.com>
Date:   Sat, 22 Jul 2017 14:46:30 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Pavel Shilovskiy <pshilov@...rosoft.com>
Cc:     Ben Hutchings <ben@...adent.org.uk>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sachin Prabhu <sprabhu@...hat.com>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH 3.18 36/68] Handle mismatched open calls

On Wed, Jul 19, 2017 at 06:39:13PM +0000, Pavel Shilovskiy wrote:
> 2017-07-14 9:43 Ben Hutchings <ben@...adent.org.uk>:
> > On Fri, 2017-05-05 at 11:32 -0700, Greg Kroah-Hartman wrote:
> > > 3.18-stable review patch.  If anyone has any objections, please let me know.
> > > 
> > > ------------------
> > > 
> > > From: Sachin Prabhu <sprabhu@...hat.com>
> > > 
> > > commit 38bd49064a1ecb67baad33598e3d824448ab11ec upstream.
> > [...]
> > > --- a/fs/cifs/smb2ops.c
> > > +++ b/fs/cifs/smb2ops.c
> > > @@ -1461,6 +1461,8 @@ struct smb_version_operations smb21_oper
> > >  	.clear_stats = smb2_clear_stats,
> > >  	.print_stats = smb2_print_stats,
> > >  	.is_oplock_break = smb2_is_valid_oplock_break,
> > > +	.handle_cancelled_mid = smb2_handle_cancelled_mid,
> > > +	.handle_cancelled_mid = smb2_handle_cancelled_mid,
> > >  	.downgrade_oplock = smb2_downgrade_oplock,
> > >  	.need_neg = smb2_need_neg,
> > >  	.negotiate = smb2_negotiate,
> > > @@ -1542,6 +1544,8 @@ struct smb_version_operations smb30_oper
> > >  	.print_stats = smb2_print_stats,
> > >  	.dump_share_caps = smb2_dump_share_caps,
> > >  	.is_oplock_break = smb2_is_valid_oplock_break,
> > > +	.handle_cancelled_mid = smb2_handle_cancelled_mid,
> > > +	.handle_cancelled_mid = smb2_handle_cancelled_mid,
> > >  	.downgrade_oplock = smb2_downgrade_oplock,
> > >  	.need_neg = smb2_need_neg,
> > >  	.negotiate = smb2_negotiate,
> > [...]
> > 
> > This doesn't look right.  handle_cancelled_mid should be initialised once in each of the 3 smb_version_operations structures, shouldn't it?
> >
> > Ben.
> 
> Yes, you are right. Thanks for pointing it out.
> 
> Greg, I provided the patch to fix the above bug (see the attachment).
> Could you please look at it and apply to the 3.18.x kernel if it is
> suitable?

Looks good, now queued up, thanks.

greg k-h