Re: Re: [Xenomai-help] Error: cat: /proc/xenomai/stat: Cannot allocate

["M. Koehrer" <mathias_koehrer@domain.hid>]

Hi!

I have one kernel module for a special driver running.
If I do not load this kernel module, everything seems to work fine.
That means, this kernel module is probably causing the issue...
I have to look closer to it...
Sorry for any confusion!

Regards

Mathias 


> On Fri, 2007-02-02 at 10:33 +0100, Philippe Gerum wrote:
> > On Fri, 2007-02-02 at 09:43 +0100, M. Koehrer wrote:
> > > Hi everybody,
> > > 
> > > I have a strange issue frequently when reading /proc/xenomai/stat.
> > > I do a cat /proc/xenomai/stat and I get an "Cannot allocate memory"
> error.
> > > This happens typcially after I have started and terminated by
> application that uses a number of tasks.
> > > I am able to reproduce it deterministically...
> > > While the application is running, I can see the stat values perfectly.
> > > Here is the head output of all /proc/xenomai/* files:
> > 
> > At first sight looking at the code, there seems to be a memory leak
> > caused by an unfree kmalloc() block in the sched & stat sequence
> > routines. Will confirm and fix. Thanks,
> > 
> 
> Not confirmed for the leakage part regarding kmalloc(). We do have a
> seq_release_private() freeing the allocated block, so back to square #1.
> This said, some kernel memory is not released somewhere, as running
> vmstat tells me here.
> 
> Btw, is the rest of your system functional after the error occurs, or is
> a reboot needed afterwise?
> 
> -- 
> Philippe.
> 
> 
> 

-- 
Mathias Koehrer
mathias_koehrer@domain.hid


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