linux-kernel - Re: [PATCH v3] fuse: In fuse_flush only wait if someone wants the return code

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Message-ID: <Y6C4ni3wpkaYxmLw@tycho.pizza>
Date:   Mon, 19 Dec 2022 12:16:46 -0700
From:   Tycho Andersen <tycho@...ho.pizza>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     Eric Biederman <ebiederm@...ssion.com>,
        linux-kernel@...r.kernel.org, fuse-devel@...ts.sourceforge.net,
        "Serge E . Hallyn" <serge@...lyn.com>
Subject: Re: [PATCH v3] fuse: In fuse_flush only wait if someone wants the
 return code

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@...ho.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@...ho.pizza>
> 
> if you want to commit it.

Ping, thoughts on landing this?

Thanks,

Tycho