Re: [B.A.T.M.A.N.] Kernel crashes with batgat installed

[Sven Eckelmann <sven.eckelmann@gmx.de>]

[-- Attachment #1: Type: text/plain, Size: 1870 bytes --]

Hi,
thanks for your report. I am currently running some stress tests on x86 and 
mips and couldn't reproduce any such problems. So I have some questions 
regarding your configuration.

On Tuesday 19 May 2009 16:27:25 Nathan Wharton wrote:
> I am using batman 1256 on a very recent openwrt (linux version
> 2.6.28.10) as well as a bit older one (linux version 2.6.26.8).
What is your target architecture in openwrt?  Have you tried to reproduce that 
problem on another architecture?

> With batgat installed, I have problems with the kernel crashing when
> turning the gateway on and off.  I start batman with -r 2.  If I
> detect an uplink, I issue -c -g 11000.  If I lose the link, I issue -c
> -r 2.  It is this final -c -r 2 that causes the kernel to either crash
> with a bad page on the next process that is created, have a null
> pointer error, or have a recursion error.
Can you create a readable kernel backtrace with ksymoops?

> If I run batman without batgat, I don't get any crashes.
>
> Everything works fine otherwise.  Except one thing that just came to
> mind, I had to remove -DDEBUG_MALLOC -DMEMORY_USAGE because batman
> wouldn't do anything without crashing because of magic number
> problems.  Could this be because I am on Big Endian hardware?
I am running it also on big endian hardware and it seems to work. Does it 
happen right after the start or were extra interaction needed? What was the 
error output?

> Could anyone else see if they have the same problem?  All you have to
> do is have batman running with batgat installed, start issuing batmand
> -c -g 11000 ; batmand -c -r 2 multiple times and see if their system
> stays stable.
I am running it in a while true loop since an hour on x86 and mips on isolated 
and non isolated (single partner) nodes and didn't get such problems.

Regards,
	Sven

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 835 bytes --]