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Bug#570279: linux-image-2.6.30-2-amd64: dumpcap ethX causes a kernel panic



On Sat, 2010-02-27 at 11:06 +0100, Mark Poks wrote:
> On Sat, Feb 27, 2010 at 03:34, Ben Hutchings <ben@decadent.org.uk>
> wrote:
>         On Wed, 2010-02-17 at 21:07 +0100, Mark Poks wrote:
>         > Package: linux-image-2.6.30-2-amd64
>         > Version: 2.6.30-8squeeze1
>         > Severity: normal
>         >
>         > excause me if i am reporting this bug in wrong place.
>         dumpcap eth3
>         > crashes my system. kernel panic occurs. logs provided as
>         attachments
>         > (sorry it is picture, but in this situation it is hard to
>         get logs in
>         > usual way)
>         
>         [...]
>         
>         And what is the driver for eth3?  Is it vmnet?
>         [...]
>  
> hi,
> surely it's not vmnet. I have r8169 under eth3 - standard realtek
> ethernet card (lspci below).
> 
> 
> on my home computer (squeeze 64 bit), system freezes when trying to
> capture network packages, on my work computer (etch 32 bit)
> it reboots immediatelly. 

etch is no longer supported and nor is Linux 2.6.30, so let's
concentrate on lenny and squeeze.  Please test either the current kernel
version from unstable (2.6.32-9) or stable-security (2.6.26-21lenny3).

> previously i've had lenny 32 bit on my work computer and from time to
> time it did not crash while trying to capture packets, but even when
> did, only application (wireshark) crashed, not whole system.
> 
> 
> i also have tried to capture with vmnet module removed but it didn't
> help anyway.

A bug in a kernel module can cause a crash even after it is removed.
While investigating this bug, please ensure that vmnet is never loaded.

> if more informations are needed, don't hestiate to ask for.

The kernel will almost always log some messages when it crashes, but
these cannot be stored to a log file because the system stops.  Please
use a serial console to record the messages
<http://www.kernel.org/doc/Documentation/serial-console.txt>, or run the
capture program from a text console and photograph the on-screen
messages.

Ben.

-- 
Ben Hutchings
Horngren's Observation:
                   Among economists, the real world is often a special case.

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