On 06/28/2010 09:26 AM, Matt W. Benjamin wrote:
> Hi,
>
> I've been trying out the kdb, kgdb integration on 2.6.35-rc3, and so far, kdb 
> is useable but kgdb not.
>
> I have a slightly messy configuration, with virtualbox vm, host pipes, and a 
> tcp pipe connector so that one vm monitors the other.  However, I seem to 
> have no trouble using kdb at 115200.  When I try to use kgdb (and I also 
> rebuilt the kernel with only kgdb enabled), gdb hangs, faults, etc.  The 
> initial reported error is "warning: unrecognized item "timeout" in 
> "qSupported" response."
>
> I'm guessing the problem could be the gdb--I'm using fedora 13's 7.1-26.  Can 
> anyone make suggestions?
>
> Matt
>
>   
Did you try the "set debug remote 1" prior to connecting to the target
to see which command is hanging?

It sounds a bit like the initial connection is not working.  Unless you
are using a connection proxy, you do have to disconnect from the console
(where you were running kdb) in order to successfully connect gdb.

Generally speaking you would not need kgdb if you can make use of the
virtualbox debugger backend, but in this case I'll assume you have some
reason you want to use this particular configuration. :-)

Cheers,
Jason.

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