A Dijous 03 Maig 2007 22:04, Jan Kiszka va escriure: > Leopold Palomo Avellaneda wrote: > > A Dijous 03 Maig 2007 20:44, Jan Kiszka va escriure: > >> [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). > > > > rtai 3.4. ummmm ugly. Also I found that I can repeat it if the program > > fails, or I kill it without finish the rt commands.... > > Vanilla RTAI 3.4* is not usable with RTnet, see below. Pick something > more recent. > > >>> 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. > > > > Ok, next week I can prepare some test and example to send you. > > Bug hunting only makes sense if you update or patch your RTAI first. > Here is the related thread I recalled: > > http://thread.gmane.org/gmane.linux.real-time.rtnet.user/2105 >
well, following your recommendations I have downloaded the last stable version of rtai 3.5. Compiled and installed without any important problem. The problem persist. The idea is the sequent: I run a program that open a rt socket. For any reason, mainly because the programmer is a rocky (as me) the program crash, or simple killed by the user (crtl + c). Then I got a message: kernel: Assertion failed! /root/rtnet-0.9.8/stack/ipv4/udp.c:rt_udp_recvmsg:398 skb kernel: LXRT releases PID 12483 (ID: simpleserver). I can run the program, but I need to change the port, because, although the program thinks that can use the port, never received some data. Also, a problem is that I cannot unload the rtnet modules, because: RTcfg: unloaded removing loopback... RTnet: unregistered rtlo RTnet: unregistered rteth0 RTDM: RTDM: device still in use - waiting for release... so, is this a rtnet bug, a rtai but, or a simple a user bug that corrump the rtai/rtnet modules? Regards, Leo ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ RTnet-users mailing list RTnet-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rtnet-users
