Hi all, It's probably only me, but I can't connect to a kgdb host because of bouncing ICMP unreachables. I'll be glad if you could take a look to see if it's a bug or not. Details: - running a cloned version of kgdb_2.6.23 branch of Jason's git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb.git - "modprobe kgdboe kgdboe='@10.0.0.28/,@10.0.0.11/'" works fine, and var/log/messages get filled with six kgdboe network configuration messages (local port 6443, local ip 10.0.0.28, interface eth0, remote port 6442, remote ip 10.0.0.11, remote mac ff:ff:ff:ff:ff:ff). - "netstat -aun" does not show an open 6643 UDP port (should it ?) - When trying to connect via remote gdb, I get a connection refused: (gdb) target remote udp:10.0.0.28:6433 warning: The remote protocol may be unreliable over UDP. Some events may be lost, rendering further debugging impossible. Remote debugging using udp:10.0.0.28:6433 Remote communication error: Connection refused. - tcpdump ouput shows two UDP messages traveling to the kgdb host only to immediately invoke ICMP unreachables: 19:30:53.424248 IP 10.0.0.11.32785 > 10.0.0.28.6433: UDP, length 5 19:30:53.424323 IP 10.0.0.11.32785 > 10.0.0.28.6433: UDP, length 14 19:30:53.426292 IP 10.0.0.28 > 10.0.0.11: ICMP 10.0.0.28 udp port 6433 unreachable, length 41 19:30:53.427542 IP 10.0.0.28 > 10.0.0.11: ICMP 10.0.0.28 udp port 6433 unreachable, length 50 - Network between 10.0.0.28 and 10.0.0.11 is just fine; I successfully work on NFS mounts (with 10.0.0.28 as a client) - the kgdb host has selinux=0 and iptables with accept-all policies - i386 (running inside a bridged qemu/vmplayer host) - config attached If you have any idea how to further debug this problem, or maybe if you know if I did something wrong, please share ! Thanks, naziir.
Attachment:
.config.gz
Description: GNU Zip compressed data
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