Re: [Xenomai-help] fata: removing non-linked element...

[Philippe Gerum <rpm@xenomai.org>]

On Tue, 2007-02-13 at 15:07 +0100, Jan Kiszka wrote:
> Stephan Zimmermann wrote:
> > I wasn't able to isolate the section of my code that causes the crash by
> > now. The only thing I figured out by now is that the particular crash
> > does not happen with 2.3.x rev 2077.
> > So I guess some change from 2077 to the 2139 revision did break something.
> 
> Could you track the issue a bit more down? There are not to many
> "interesting" changes to 2.3.x. A few milestones I found in the ChangeLog:
> 
> - 2092: Allow sleeping scheduler locks
> - 2108: Before RPI rework
> 
> Anything after 2108 only makes sense to dissect when you switch on

s,on,off,

> XENO_OPT_RPIDISABLE (RPI was buggy until 2139).
> 
> > I'll go on trying to make it reproducible in a small demo program.
> > 
> > By the way, I see a Pentium M crash reliable when I do the following,
> > don't know if it's related:
> > 
> > - load nucleus and native module
> > - start / stop my app
> > - reload the modules
> > - start my app --> crash
> > 
> > I attached 'screenshots' of a total freeze with backtrace and some
> > messages I extracted  from syslog (both on Pentium M).
> 
> Looks like some memory corruption. Your application is not messing
> around on raw (kernel) memory and/or hardware? Keep in mind that changes
> to the kernel code also moves offsets, potentially unrevealing a
> pre-existing corruption that so far just hit harmless regions.
> 
> Jan
> 
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-- 
Philippe.