Thanks for reporting. We just recently removed the mask_number function (http://code.google.com/p/volatility/source/detail?r=3090) because vm_start and vm_end are already unsigned (so you shouldn't see negative numbers in output). 

I'm guessing this may be a problem with our output formatting, but we'll look into it (the output of /proc/<pid>/maps like Andrew asked for would be useful).


On Fri, Mar 1, 2013 at 10:47 AM, Andrew Case <atcuno@gmail.com> wrote:
Can you send the output of /proc/<pid>/maps that corresponds to one of
the processes with the broken plugin output?

On Fri, Mar 1, 2013 at 6:52 AM, Edwin Smulders <edwin.smulders@gmail.com> wrote:
> Hi all,
>
> I've just created a profile for my Ubuntu 12.04 (3.5.0-25) and I've
> dumped the memory using virtualbox guestcoredump.
> Using the linux_proc_maps plugin I get the following output:
>
> http://paste.ubuntu.com/5576450/
>
> I was expecting similar output to "cat /proc/<pid>/maps". As you can
> see, these "-0x4...000" addresses are obviously wrong. Is this I am
> doing wrong myself, or is this a bug? It happens for other processes
> as well.
>
> If this is a bug I'll make a new issue in the tracker with the steps
> I've followed to produce this.
>
> Cheers,
> Edwin
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