linux-kernel - Re: kernel BUG at /data/lemmy/linux.trees.git/fs/nfs/idmap.c:681!

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]

Message-ID: <502127EF.3030209@netapp.com>
Date:	Tue, 07 Aug 2012 10:36:31 -0400
From:	Bryan Schumaker <bjschuma@...app.com>
To:	Joerg Roedel <joro@...tes.org>
CC:	Joerg Roedel <joerg.roedel@....com>,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	wdauchy@...il.com
Subject: Re: kernel BUG at /data/lemmy/linux.trees.git/fs/nfs/idmap.c:681!

On 08/07/2012 10:27 AM, Joerg Roedel wrote:
> On Tue, Aug 07, 2012 at 10:17:33AM -0400, Bryan Schumaker wrote:
>> On 08/07/2012 10:15 AM, Joerg Roedel wrote:
>>> Yes, it reproduces pretty reliable here with Ubuntu 11.10 Server on an
>>> Intel box with an NFSv3 directory mounted at boot. This is the only box
>>> I have seen this so far, probably it depends on the config. I attach the
>>> config of the failing box.
>>
>> Interesting.  Are you mounting v4, too?  This code shouldn't be
>> running for v3... maybe that's why I haven't been able to hit it.
> 
> No, I am not using NFSv4 on the box where the BUG happens. I have
> another box mounting the same directory where the BUG does not trigger
> with v3.6-rc1. A difference I spotted between the kernels is, that on
> the failing box NFS is compiled as a module whereas it is compiled into
> the kernel on the box that works fine. Not sure if that has anything to
> do with the problem...
> 

Your stack trace is showing v4 calls on the failing box, those definitely shouldn't be happening if you're using v3.  Can you double check /etc/fstab and /proc/mounts on a working kernel to be sure?

My VM has nfs as a module, so I don't think that's the issue... I just started compiling your config to test on my own.

> 
> 	Joerg
> 
> 

--
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/