Re: [Xenomai-help] Kernel oops when reading /proc/xenomai/stats

[Jan Kiszka <jan.kiszka@domain.hid>]

Andreas Glatz wrote:
> Hi,
> 
> I consistently get a Kernel oops when I do a 'cat /proc/xenomai/stats' after killing the Xenomai user-space application which registers for several interrupts.
> 
> It's definitely Xenomai related as we are trying to allocate -784bytes of memory (~4GBytes) in nucleus/module.c:stat_seq_open() and we just hv 512MBytes :)
> 
> It seems that xnintr_count gets decremented twice when killing the application. The application itself doesn't delete the RT_INTR. We rely on the cleanup which
> is done by the xenomai library (?) before exiting the application.
> 
> Best regards,
> Andreas
> 
> 
> That's the kernel oops with additional debugging info (starts with 'HUHU' - see code below the oops):
> 
> HUHU count=1 xnintr_count=-12

That's not good. What is your Xenomai version?

Does everything work fine if you application terminates normally and
deletes the rt_intr objects explicitly?

Jan

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