[Oops, almost overseen.] Leopold Palomo-Avellaneda wrote: > Hi, > > some days ago I was sending some messages about the examples of rtnet using > rtai. I compiled and installing rtnet with some problems but I think that is > working. > > I modified the init script for have a notdma option because it's the only > configuration that I need. I never couldn't run the examples of rtai or > generic till yesterday. I modified the examples, created a new examples, and > never worked. I have been more or less stopped in this some days. > > Yesterday, I run in a desperately moment the examples of rtai and generic and > wou!!! it worked!!! However I was I bit worried because I thought that I have > been losing my time and the rtnet list with my stupids questions. Also, I > modified the example to send 100 messages and it ran. > > Today I tried to run the examples and again it failed. I tried to make a > rtnet > stop and rtnet notdma again but it failed to unload the module rtipv4. So, I > needed to reboot the box. After reboot it, I could run again the examples, > but only one time. The next time it failed again, and now I check > the /var/log/kern messages and I found this: > > > May 3 10:45:03 ulises kernel: LXRT CHANGED MODE (SYSCALL), PID = 4304, > SYSCALL = 4. > May 3 10:48:30 ulises kernel: Assertion > failed! /root/rtnet-0.9.8/stack/ipv4/udp.c:rt_udp_recvmsg:398 skb != NULL > May 3 10:48:30 ulises kernel: LXRT releases PID 4304 (ID: simpleserver). > May 3 10:48:50 ulises kernel: Assertion > failed! /root/rtnet-0.9.8/stack/ipv4/udp.c:rt_udp_recvmsg:398 skb != NULL > May 3 10:48:50 ulises kernel: LXRT releases PID 4307 (ID: simpleserver).
Hmm. What RTAI version? I vaguely recall some bug in RTAI's RTDM layer (3.4?) that triggered similar messages. And it would also explain indeterministic behaviour your observed (internal event signalling was broken). > > Also, I cannot made a rtnet stop because the script is stopped removing the > rtipv4 module. > > So, this is normal? It's something that I have done wrong? how can I know > what > is happening? Core assertion failures are never normal and indicate bugs underneath. Unless you are running an older RTAI version, we would have to dig deeper. Jan
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