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    SubjectRe: [uml-devel] unregister_netdevice: waiting for tap24 to become free
    Date
    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
    >
    >
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    --
    Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
    Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
    http://www.user-mode-linux.org/~blaisorblade


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