linux-kernel - Re: [PATCH 0/5] fs, xfs refcount conversions

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Date:   Thu, 20 Apr 2017 10:24:04 -0700
From:   "Darrick J. Wong" <darrick.wong@...cle.com>
To:     "Reshetova, Elena" <elena.reshetova@...el.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        David Windsor <dwindsor@...il.com>,
        Hans Liljestrand <ishkamiel@...il.com>
Subject: Re: [PATCH 0/5] fs, xfs refcount conversions

On Thu, Apr 20, 2017 at 08:11:41AM +0000, Reshetova, Elena wrote:
> 
>  
> > v3:
> >  * fixed header file inclusion
> 
> I don't think I have heard anything back on this v3 patch set. 
> Is there still smth here to fix or could you take the changes in?

Generally I think it looks ok; it's running through shakedown testing as
we speak.

--D

> 
> Best Regards,
> Elena.
> 
> > 
> > Now when new refcount_t type and API are finally merged
> > (see include/linux/refcount.h), the following
> > patches convert various refcounters in the xfs susystem from atomic_t
> > to refcount_t. By doing this we prevent intentional or accidental
> > underflows or overflows that can led to use-after-free vulnerabilities.
> > 
> > 
> > Elena Reshetova (5):
> >   fs, xfs: convert xfs_bui_log_item.bui_refcount from atomic_t to
> >     refcount_t
> >   fs, xfs: convert xfs_efi_log_item.efi_refcount from atomic_t to
> >     refcount_t
> >   fs, xfs: convert xlog_ticket.t_ref from atomic_t to refcount_t
> >   fs, xfs: convert xfs_cui_log_item.cui_refcount from atomic_t to
> >     refcount_t
> >   fs, xfs: convert xfs_rui_log_item.rui_refcount from atomic_t to
> >     refcount_t
> > 
> >  fs/xfs/xfs_bmap_item.c     |  4 ++--
> >  fs/xfs/xfs_bmap_item.h     |  2 +-
> >  fs/xfs/xfs_extfree_item.c  |  4 ++--
> >  fs/xfs/xfs_extfree_item.h  |  2 +-
> >  fs/xfs/xfs_linux.h         |  1 +
> >  fs/xfs/xfs_log.c           | 10 +++++-----
> >  fs/xfs/xfs_log_priv.h      |  2 +-
> >  fs/xfs/xfs_refcount_item.c |  4 ++--
> >  fs/xfs/xfs_refcount_item.h |  2 +-
> >  fs/xfs/xfs_rmap_item.c     |  4 ++--
> >  fs/xfs/xfs_rmap_item.h     |  2 +-
> >  11 files changed, 19 insertions(+), 18 deletions(-)
> > 
> > --
> > 2.7.4
> 
> --
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