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

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Tue, 05 Aug 2008 08:51:23 +1200
From:	Paul Collins <paul@...ly.ondioline.org>
To:	michael@...erman.id.au
Cc:	Neil Brown <neilb@...e.de>,
	"J. Bruce Fields" <bfields@...ldses.org>, linuxppc-dev@...abs.org,
	nfsv4@...ux-nfs.org, linux-kernel@...r.kernel.org
Subject: Re: nfsd, v4: oops in find_acceptable_alias, ppc32 Linux, post-2.6.27-rc1

Michael Ellerman <michael@...erman.id.au> writes:

> On Mon, 2008-08-04 at 22:00 +1200, Paul Collins wrote:
>> Paul Collins <paul@...ly.ondioline.org> writes:
>> 
>> > Neil Brown <neilb@...e.de> writes:
>> >> Could you try removing the 'static' declaration for nfsd_acceptable
>> >> and recompile?
>> >> Or maybe try a different compiler?
>> >
>> > I will give these a try this evening.
>> 
>> I built myself a nice new cross compiler:
>> 
>>         powerpc-linux-gnu-gcc-4.1 (GCC) 4.1.3 20080623 (prerelease) (Debian 4.1.2-23)
>> 
>> and rebuilt 94ad374a0751f40d25e22e036c37f7263569d24c.  Running that on
>> the server and 2.6.26 on the client, I got yet another Oops.  This one
>> locked the machine up pretty good, so all I have is a picture:
>> 
>> http://ondioline.org/~paul/DSCN1608.JPG
>
> Wow.
>
> Can you try building a kernel on the server? ie. not over NFS.

Built kernels on the server with native gcc 4.2.4 and 4.3.1 and repeated
the build test.  Both of them threw an Oops with traces like the ones
we've seen before.  Also, because now's about time to start shooting in
the dark, I tried a cross-built kernel with CC_OPTIMIZE_FOR_SIZE
disabled.  That one Oopses too.  Also I reseated the server's memory.

Although I've been able to build kernels over NFS with 2.6.26 on the
server, I've just realized I haven't tried to stress it much.  I'll try
a build loop when the server's running 2.6.26 this evening.

-- 
Paul Collins
Wellington, New Zealand

Dag vijandelijk luchtschip de huismeester is dood
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/