Re: [Xenomai-help] Total system lockup doing anything real-time

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

Nolan Waite wrote:
> Hello,
> 
> Thanks for the help so far.
> 
> On 2011-04-08, at 7:19 PM, Gilles Chanteperdrix wrote:
> 
>> The question being, do you get the text of a kernel oops when the
>> bug happens? Because if this is what happens, what we would like is
>> the kernel oops text, and the serial console is the best way to get
>> it. If you do not get any message after launching the latency test,
>> then forget about the serial console, please try enabling the nmi
>> watchdog as explained in Documentation/nmi_watchdog.txt in the
>> Linux kernel sources.
> 
> Enabling the nmi watchdog (had to add nmi_watchdog=2 to the boot
> command line, not nmi_watchdog=1 like I had expected) got me some
> panic text (in attached zip as panic.log) which I got via the
> netconsole. Nothing else appeared on the screen after the panic log.

That is an improvement.

In the kernel configuration. Could you try changing the following
configuration options:
CONFIG_FTRACE to n
CONFIG_SECURITY to n
CONFIG_DEBUG_RODATA to n
CONFIG_KGDB to n
CONFIG_AUDIT to n
Could you to try a 64 bits kernel (with the 32 bits compatibility layer,
it should work with a 32 bits rootfs)?

If you still get a oops, please send us a disassembly of the EIP where
the NMI watchdog triggers.2

-- 
                                                                Gilles.