linux-kernel - Re: nfsd, v4: oops in find_acceptable_alias, ppc32 Linux, post-2.6.27-rc1

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Message-ID: <87abfvm4cc.fsf@burly.wgtn.ondioline.org>
Date:	Sun, 03 Aug 2008 10:36:51 +1200
From:	Paul Collins <paul@...ly.ondioline.org>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	linux-kernel@...r.kernel.org, nfsv4@...ux-nfs.org,
	linuxppc-dev@...abs.org, Neil Brown <neilb@...e.de>
Subject: Re: nfsd, v4: oops in find_acceptable_alias, ppc32 Linux, post-2.6.27-rc1

"J. Bruce Fields" <bfields@...ldses.org> writes:

> On Sun, Aug 03, 2008 at 12:03:18AM +1200, Paul Collins wrote:
>> I just got the oops below on a ppc32 NFS4 server.  I was cross-compiling
>> Linux with an amd64 client at the time.  The server is running Linus's
>> tree as of 94ad374a0751f40d25e22e036c37f7263569d24c, the client is
>> running 2.6.26.
>> 
>> The server's kernel was cross-compiled with gcc 4.2.4-3 and binutils
>> 2.18.50.20080610-1, both built from the Debian sources following their
>> toolchain-building procedures.
>
> Without having really thought about this,
>
> 	496d6c32d4d057cb44272d9bd587ff97d023ee92 "nfsd: fix spurious
> 	EACCESS in reconnect_path()"
>
> is one suspect; it might be worth checking whether the problem's
> reproduceable with that reverted.  But I assume we're not so lucky as to
> have a 100% reproduceable problem here?

Unknown.  I've kicked off a fresh build.  Here's hoping!

> What do your export options look like?

  $ cat /etc/exports
  /srv/nfsv4            *(sec=krb5:krb5i:krb5p,rw,fsid=0,crossmnt,insecure,no_subtree_check)
  /srv/nfsv4/home/paul  *(sec=krb5:krb5i:krb5p,rw,insecure,no_subtree_check)
  $ mount | grep bind
  /home/paul on /srv/nfsv4/home/paul type none (rw,bind)

-- 
Paul Collins
Wellington, New Zealand

Dag vijandelijk luchtschip de huismeester is dood
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