Re: [uml-devel] unregister_netdevice: waiting for tap24 to become free

[Blaisorblade]

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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