[Users] Kernel crash when removing vznetdev module

[Benjamin Henrion]

On Tue, Jan 22, 2013 at 2:57 PM, Vladimir Davydov
<VDavydov at parallels.com> wrote:
> On Jan 22, 2013, at 5:33 PM, Benjamin Henrion <bh at udev.org> wrote:
>
>> Hi,
>>
>> With a RH machine with the stable openvz kernel, I managed to crash
>> the machine with this:
>>
>> root at 203 /etc/vz/conf [26]# rmmod vznetdev
>> ERROR: Module vznetdev is in use
>> root at 203 /etc/vz/conf [27]# /etc/init.d/vz stop
>> Suspending CT 207
>> Suspending CT 207
>> Suspending CT 207
>> Shutting down CT 207
>> Bringing down interface venet0:                            [  OK  ]
>> Stopping OpenVZ:                                           [  OK  ]
>> root at 203 /etc/vz/conf [28]# rmmod vznetdev
>> ERROR: Module vznetdev does not exist in /proc/modules
>> root at 203 /etc/vz/conf [29]# /etc/init.d/vz start^C
>> root at 203 /etc/vz/conf [29]# vzctl set 207 --onboot no
>> WARNING: Settings were not saved to config (use --save flag)
>> root at 203 /etc/vz/conf [30]# vzctl set 207 --onboot no --save
>> CT configuration saved to /etc/vz/conf/207.conf
>> root at 203 /etc/vz/conf [31]# /etc/init.d/vz start
>> Starting OpenVZ:                                           [  OK  ]
>> Applying OOM adjustments:                                  [  OK  ]
>> Bringing up interface venet0:                              [  OK  ]
>> root at 203 /etc/vz/conf [32]# rmmod vznetdev
>> root at 203 /etc/vz/conf [33]# vzctl start 207
>> Starting container...
>> Container is mounted
>> Setting CPU units: 1000
>>
>> ->  Kernel panic
>
> Not very informative. Where is the kernel log?

Sorry, I was in SSH, will try to catch the kernel messages.

-- 
Benjamin Henrion <bhenrion at ffii.org>
FFII Brussels - +32-484-566109 - +32-2-3500762
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