Re: Patch "nfsd: fix oops when reading pool_stats before server is started" has been added to the 6.9-stable tree

[Greg KH <greg@kroah.com>]

On Tue, Jun 25, 2024 at 08:55:44AM +1000, NeilBrown wrote:
> On Mon, 24 Jun 2024, stable@vger.kernel.org wrote:
> > This is a note to let you know that I've just added the patch titled
> > 
> >     nfsd: fix oops when reading pool_stats before server is started
> > 
> > to the 6.9-stable tree which can be found at:
> >     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> > 
> > The filename of the patch is:
> >      nfsd-fix-oops-when-reading-pool_stats-before-server-.patch
> > and it can be found in the queue-6.9 subdirectory.
> > 
> > If you, or anyone else, feels it should not be added to the stable tree,
> > please let <stable@vger.kernel.org> know about it.
> 
> I feel this should not be added to the stable tree.
> 
> It moves at test on a field protected by a mutex outside of the
> protection of that mutex, and so is obviously racey.
> 
> Depending on how the race goes, si->serv might be NULL when dereferenced
> in svc_pool_stats_start(), or svc_pool_stats_stop() might unlock a mutex
> that hadn't been locked.
> 
> I'll post a revert and a better fix for mainline.

Now dropped, thanks!

greg k-h