M. Koehrer wrote: > Hi Jan and Gilles, > > after a long debug-reboot-try-again-session I was able to reduce the problem > I had > to a very short application that leads to a complete system freeze on a > 2.6.19.1 kernel. > As with my PC I am not able to run the NMI stuff within Xenomai, I forward > the application to you > and the list. Perhaps somebody can try out the enclosed application with the > latest Xenomai version > on 2.6.19.1.
Thanks for the test case, I will give this a try ASAP. > Please adjust the IP settings in the C file and in the xenorun script to your > setup. > It is sufficient to send out UDP frames, if the remote device does not answer > this does not hurt. > However the remote device should listen on a specified port to avoid ICMP > complains about > no-opened UDP ports... > Using Ethereal I monitored the traffic. > Here is the summary of it: > ARP request/response (from the xenorun script) > ARP request/response (from the applicaion) > UDP message to port 18765 (no answer) > 2 seconds later: UDP message to port 18765 (no answer) > 2+5=7 seconds later: ARP request/response (from the application) > 2 seconds later: UDP message to port 18765 > Here the system freezes. I do not see the message "Step A". Could you set me the Ethereal dump for reference? Just in case the test does not kick immediately for me and I need to check the event flow. > > One important piece is the system() call out of the realtime application to > do a rtroute. > When I remove this call, there is no error... > > > I am using Xenomai SVN #1969 and the included 2.6.19.1 patch. Pentium 4 UP. Do you have a different (slower) execution platform at hand to check if the CPU speed as influence on the lock-up? I hope it is not the case - makes tracking easier. But it wouldn't be the first time. > > Any feedback on this is highly welcome! > You will get it. Thanks again, Jan
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