On Monday 11 July 2005 21:12, Peter wrote:-
Hi. I am hitting a bug that manifests in an unregister_netdevice error
message. After the problem is triggered processes like ifconfig, tunctl
and route refuse to exit, even with killed.
Even from the "D" state below, it's clear that there was a deadlock on some semaphore, related to tap24... Could you search your kernel logs for traces of an Oops?
And the only solution I have found to regaining control of the server is issuing a reboot.
The server is running a number of tap devices. (It is a UML host server
running the skas patches http://www.user-mode-linux.org/~blaisorblade/).
Regards, Peter
# uname -r
2.6.11.7-skas3-v8
unregister_netdevice: waiting for tap24 to become free. Usage count = 1
unregister_netdevice: waiting for tap24 to become free. Usage count = 1
unregister_netdevice: waiting for tap24 to become free. Usage count = 1
unregister_netdevice: waiting for tap24 to become free. Usage count = 1
unregister_netdevice: waiting for tap24 to become free. Usage count = 1
unregister_netdevice: waiting for tap24 to become free. Usage count = 1
unregister_netdevice: waiting for tap24 to become free. Usage count = 1
30684 ? DW 0:45 \_ [tunctl]
31974 ? S 0:00 /bin/bash ./monitorbw.sh
31976 ? S 0:00 \_ /bin/bash ./monitorbw.sh
31978 ? D 0:00 \_ /sbin/ifconfig
31979 ? S 0:00 \_ grep \(tap\)\|\(RX bytes\)
32052 ? S 0:00 /bin/bash /opt/uml/umlcontrol.sh start --user
gildersleeve.de
32112 ? S 0:00 \_ /bin/bash /opt/uml/umlrun.sh --user
gildersleeve.de
32152 ? S 0:00 \_ /bin/bash ./umlnetworksetup.sh
--check --user gildersleeve.de
32176 ? D 0:00 \_ tunctl -u gildersleeve.de -t tap24