Hi, I'm trying to find out if this is an MPC5200B related driver problem or RT-Preempt related one: Under some network (nmap, nc) load the network dies on my target. Target (PowerPC) runs 2.6.23-rc8 plus patch-2.6.23-rc8-rt1. Sometimes it survives the nmap, but mostly it dies immediately. Here it was successfull in the first nmap run, but dies on the second one: ------------------------------------------------------------------------------ jbe@octopus:~/bla$ nmap -v 192.168.23.226 Starting Nmap 4.20 ( http://insecure.org ) at 2007-09-28 11:58 CEST Initiating Parallel DNS resolution of 1 host. at 11:58 Completed Parallel DNS resolution of 1 host. at 11:58, 0.04s elapsed Initiating Connect() Scan at 11:58 Scanning 192.168.23.226 [1697 ports] Discovered open port 22/tcp on 192.168.23.226 Discovered open port 23/tcp on 192.168.23.226 Completed Connect() Scan at 11:58, 0.08s elapsed (1697 total ports) Host 192.168.23.226 appears to be up ... good. Interesting ports on 192.168.23.226: Not shown: 1695 closed ports PORT STATE SERVICE 22/tcp open ssh 23/tcp open telnet Nmap finished: 1 IP address (1 host up) scanned in 0.226 seconds jbe@octopus:~/bla$ nmap -v 192.168.23.226 Starting Nmap 4.20 ( http://insecure.org ) at 2007-09-28 11:58 CEST Initiating Parallel DNS resolution of 1 host. at 11:58 Completed Parallel DNS resolution of 1 host. at 11:58, 0.04s elapsed Initiating Connect() Scan at 11:58 Scanning 192.168.23.226 [1697 ports] Discovered open port 22/tcp on 192.168.23.226 Discovered open port 23/tcp on 192.168.23.226 >>>>>>>>>>>>>>> [hangs a while] <<<<<<<<<<<<<<<<<<<<<<< Completed Connect() Scan at 11:58, 11.90s elapsed (1697 total ports) Host 192.168.23.226 appears to be up ... good. Interesting ports on 192.168.23.226: Not shown: 1443 closed ports, 252 filtered ports PORT STATE SERVICE 22/tcp open ssh 23/tcp open telnet Nmap finished: 1 IP address (1 host up) scanned in 12.045 seconds jbe@octopus:~/bla$ nmap -v 192.168.23.226 Starting Nmap 4.20 ( http://insecure.org ) at 2007-09-28 12:10 CEST Note: Host seems down. If it is really up, but blocking our ping probes, try -P0 Nmap finished: 1 IP address (0 hosts up) scanned in 2.010 seconds ------------------------------------------------------------------------------ In this case an "ifconfig eth0 down; ifconfig eth0 up" on my target reactivates the network and I can restart the nmap test. And it fails again and again. Any idea? Juergen -- Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Vertretung Sued/Muenchen, Germany Phone: +49-8766-939 228 | Fax: +49-5121-206917-9 - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
