Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Feedback-ID: i21f147d5:Fastmail
Date:   Tue, 3 Jan 2023 07:51:22 -0700
From:   Tycho Andersen <tycho@tycho.pizza>
To:     Miklos Szeredi <miklos@szeredi.hu>
Cc:     Eric Biederman <ebiederm@xmission.com>,
        linux-kernel@vger.kernel.org, fuse-devel@lists.sourceforge.net,
        "Serge E . Hallyn" <serge@hallyn.com>
Subject: Re: [PATCH v3] fuse: In fuse_flush only wait if someone wants the
 return code
Message-ID: <Y7RA6pzP82mNWxOQ@tycho.pizza>
References: <CAJfpegvrd2nsydG26stcmeEkdO1JLyeu69KrZs4dvVxXtoz42Q@mail.gmail.com>
 <20221114160209.1229849-1-tycho@tycho.pizza>
 <Y4TNI8+QVHFuzeZC@tycho.pizza>
 <CAJfpegtckCReg7V6ET4a8EW_X-WfmANQdc4hP26bV9zoRrk7Wg@mail.gmail.com>
 <Y5IjpyLHIF8PgQ6l@tycho.pizza>
 <Y6C4ni3wpkaYxmLw@tycho.pizza>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <Y6C4ni3wpkaYxmLw@tycho.pizza>
Precedence: bulk

On Mon, Dec 19, 2022 at 12:16:50PM -0700, Tycho Andersen wrote:
> On Thu, Dec 08, 2022 at 10:49:30AM -0700, Tycho Andersen wrote:
> > On Thu, Dec 08, 2022 at 03:26:19PM +0100, Miklos Szeredi wrote:
> > > On Mon, 28 Nov 2022 at 16:01, Tycho Andersen <tycho@tycho.pizza> wrote:
> > > >
> > > > Hi Milkos,
> > > >
> > > > On Mon, Nov 14, 2022 at 09:02:09AM -0700, Tycho Andersen wrote:
> > > > > v3: use schedule_work() to avoid other sleeps in inode_write_now() and
> > > > >     fuse_sync_writes(). Fix a UAF of the stack-based inarg.
> > > >
> > > > Thoughts on this version?
> > > 
> > > Skipping attr invalidation on success is wrong.
> > 
> > Agreed, that looks like my mistake.
> > 
> > > How about the attached (untested) patch?
> > 
> > It passes my reproducer with no warnings or anything. Feel free to
> > add:
> > 
> > Tested-by: Tycho Andersen <tycho@tycho.pizza>
> > 
> > if you want to commit it.
> 
> Ping, thoughts on landing this?

Happy new year all. Any update here?

Thanks,

Tycho