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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Y7RA6pzP82mNWxOQ@tycho.pizza>
Date:   Tue, 3 Jan 2023 07:51:22 -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 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@...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?

Happy new year all. Any update here?

Thanks,

Tycho