Re: [bisect] NFS regression breaks X

[Andrew Morton <akpm@linux-foundation.org>]

On Wed, 09 May 2007 18:03:26 -0400
Trond Myklebust <Trond.Myklebust@netapp.com> wrote:

> On Wed, 2007-05-09 at 17:30 -0400, Jeff Garzik wrote:
> > Original bug report, with hardware and software info:
> > http://lkml.org/lkml/2007/5/8/667
> > 
> > I love bisect :)  bisect has identified the following commit as the one 
> > that causes my GNOME login to die, within 10 seconds of logging in:
> > 
> > 	commit 2bea90d43a050bbc4021d44e59beb34f384438db
> > 	Author: Chuck Lever <chuck.lever@oracle.com>
> > 	Date:   Thu Mar 29 16:47:53 2007 -0400
> > 
> > 	SUNRPC: RPC buffer size estimates are too large
> > 
> > 100% reproducible, verified regression.  My home directory is an NFSv4 
> > mount, and the problem appears on my client workstation, so this makes 
> > some sense:
> > > sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
> > > pretzel:/ on /g type nfs4 (rw,noatime,proto=tcp,addr=10.10.10.1)
> 
> Known issue.

It's a bit rough that Jeff spent a large amount of time hunting down an
already-known bug.  That's normally my job :(

This five-week-old diff only ever appeared in 2.6.21-mm1, which was
released four days ago.  It was then whizzed into mainline.  We thus lost
five weeks public testing which would probably have saved Jeff his pain.

What went wrong?