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

[Bryan Schumaker]

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
> 
> 

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