Re: [Vol-users] Incorrect addresses in linux_proc_maps

Interesting.... I think I'll build my own VM to match your specs so I can do more

You're using Ubuntu 12.04 x86 desktop? Do you think the following link

what most closely resembles your base build? http://releases.ubuntu.com/12.04.2/ubuntu-12.04.2-desktop-i386.iso Thanks! Michael On Tue, Apr 2, 2013 at 7:31 AM, Edwin Smulders <

wrote: > > This is the actual /proc/pid/maps of the process I just tested > > http://paste.ubuntu.com/5670138/ > > On 2 April 2013 13:26, Edwin Smulders &lt;edwin.smulders(a)gmail.com&gt;

> > http://paste.ubuntu.com/5670124/ > > > > Change is improvement, I guess :) > > > > On 2 April 2013 13:25, Michael Hale Ligh &lt;michael.hale(a)gmail.com&gt;

> >> Hey Edwin, > >> > >> OK, update to r3264 and I will keep my fingers crossed that this

> >> the > >> issue. > >> > >> Thanks for the quick reply! > >> Michael > >> > >> > >> On Tue, Apr 2, 2013 at 7:17 AM, Edwin Smulders > >> &lt;edwin.smulders(a)gmail.com&gt; > >> wrote: > >>> > >>> http://paste.ubuntu.com/5670109/ > >>> > >>> Cheers, > >>> Edwin > >>> > >>> On 2 April 2013 13:12, Michael Hale Ligh &lt;michael.hale(a)gmail.com&gt; > >>> wrote: > >>> > Hey Edwin, > >>> > > >>> > Hmm, yes, if you don't mind...there is one more thing. Could you > >>> > type > >>> > "make > >>> > clean" in the directory where vol.py exists and then re-run the > >>> > plugin? > >>> > This > >>> > will make sure all possibly stale .pyc (compiled python objects)

> >>> > removed. We basically hard-coded the vm start and end fields to

> >>> > unsigned, > >>> > so its really strange if they're still showing up negative. Also, > >>> > could > >>> > you > >>> > paste just the first few lines of the linux_proc_maps output, > >>> > something > >>> > else > >>> > may give us a clue if we see it. > >>> > > >>> > Thanks again, > >>> > Michael > >>> > > >>> > > >>> > On Tue, Apr 2, 2013 at 3:38 AM, Edwin Smulders > >>> > &lt;edwin.smulders(a)gmail.com&gt; > >>> > wrote: > >>> >> > >>> >> Finally, it's tuesday morning, I can test your solution. > >>> >> > >>> >> Sadly, it's still giving me the same output (revision 3263). > >>> >> > >>> >> Is there anything else I can do to help you find a solution? > >>> >> > >>> >> Cheers, > >>> >> Edwin > >>> >> > >>> >> On 2 April 2013 04:37, Michael Hale Ligh <

> >>> >> wrote: > >>> >> > Hey Edwin, > >>> >> > > >>> >> > Hope you had a nice weekend! Just wanted to check and see if

> >>> >> > had > >>> >> > a > >>> >> > chance to determine if the linux_proc_maps plugin is printing > >>> >> > output > >>> >> > in > >>> >> > a > >>> >> > more accurate way now? > >>> >> > > >>> >> > Thanks! > >>> >> > Michael > >>> >> > > >>> >> > > >>> >> > On Fri, Mar 29, 2013 at 8:13 PM, Michael Hale Ligh > >>> >> > &lt;michael.hale(a)gmail.com&gt; > >>> >> > wrote: > >>> >> >> > >>> >> >> Hi Edwin, > >>> >> >> > >>> >> >> Could you please svn update to revision 3220 or later and > >>> >> >> re-test > >>> >> >> the > >>> >> >> linux_proc_maps plugin? > >>> >> >> > >>> >> >> Thanks, > >>> >> >> Michael > >>> >> >> > >>> >> >> > >>> >> >> On Fri, Mar 29, 2013 at 11:19 AM, Edwin Smulders > >>> >> >> &lt;edwin.smulders(a)gmail.com&gt; wrote: > >>> >> >>> > >>> >> >>> Correct URL: http://packages.ubuntu.com/precise/dwarfdump > >>> >> >>> > >>> >> >>> On 29 March 2013 16:18, Edwin Smulders > >>> >> >>> &lt;edwin.smulders(a)gmail.com&gt; > >>> >> >>> wrote: > >>> >> >>> > On 29 March 2013 15:25, Michael Hale Ligh > >>> >> >>> > &lt;michael.hale(a)gmail.com&gt; > >>> >> >>> > wrote: > >>> >> >>> >> While we look into that, could you > >>> >> >>> >> tell me what version of dwarfdump you have installed? > >>> >> >>> > > >>> >> >>> > I would love to tell you, but I had to go home early and

> >>> >> >>> > to > >>> >> >>> > easter > >>> >> >>> > I can tell you on tuesday morning what the exact version

> >>> >> >>> > However, it was a fresh install of ubuntu 12.04 and as

> >>> >> >>> > I > >>> >> >>> > can > >>> >> >>> > tell there have been no updates to the package since > >>> >> >>> > december, so > >>> >> >>> > it > >>> >> >>> > must be this version: > >>> >> >>> > http://packages.ubuntu.com/precise/libdwarf-dev > >>> >> >>> > > >>> >> >>> >> On Fri, Mar 29, 2013 at 6:11 AM, Edwin Smulders > >>> >> >>> >> &lt;edwin.smulders(a)gmail.com&gt; > >>> >> >>> >> wrote: > >>> >> >>> >>> > >>> >> >>> >>> (Sending this a second time, first time i forgot to

> >>> >> >>> >>> the > >>> >> >>> >>> mailing-list) > >>> >> >>> >>> Here's the struct: > >>> >> >>> >>> http://paste.ubuntu.com/5657610/ > >>> >> >>> >>> I did not realise the first time that I could simply dt

> >>> >> >>> >>> like > >>> >> >>> >>> that. > >>> >> >>> >>> > >>> >> >>> >>> I've attached the profile, if it's not too big. > >>> >> >>> >>> > >>> >> >>> >>> Cheers, > >>> >> >>> >>> Edwin > >>> >> >>> >>> > >>> >> >>> >>> On 28 March 2013 18:49, Michael Hale Ligh > >>> >> >>> >>> &lt;michael.hale(a)gmail.com&gt; > >>> >> >>> >>> wrote: > >>> >> >>> >>> > Hey Edwin, > >>> >> >>> >>> > > >>> >> >>> >>> > On second thought, if you could send your profile > >>> >> >>> >>> > (LinuxUbuntu-12_04-3_5_0-25x86.zip), that would be

> >>> >> >>> >>> > better. > >>> >> >>> >>> > > >>> >> >>> >>> > Thanks! > >>> >> >>> >>> > Michael > >>> >> >>> >>> > > >>> >> >>> >>> > > >>> >> >>> >>> > On Thu, Mar 28, 2013 at 1:04 PM, Michael Hale Ligh > >>> >> >>> >>> > &lt;michael.hale(a)gmail.com&gt; > >>> >> >>> >>> > wrote: > >>> >> >>> >>> >> > >>> >> >>> >>> >> Hey Edwin, > >>> >> >>> >>> >> > >>> >> >>> >>> >> Sorry for the delay and thanks for the additional > >>> >> >>> >>> >> output. > >>> >> >>> >>> >> Could > >>> >> >>> >>> >> you run > >>> >> >>> >>> >> one more thing, please? Instead of doing

> >>> >> >>> >>> >> address) > >>> >> >>> >>> >> could > >>> >> >>> >>> >> you > >>> >> >>> >>> >> just do dt('mm_struct'). That will show the actual

> >>> >> >>> >>> >> rather > >>> >> >>> >>> >> than > >>> >> >>> >>> >> the > >>> >> >>> >>> >> values of a specific structure. For example: > >>> >> >>> >>> >> > >>> >> >>> >>> >> >>> dt('mm_struct') > >>> >> >>> >>> >> 'mm_struct' (436 bytes) > >>> >> >>> >>> >> 0x0 : mmap ['pointer', > >>> >> >>> >>> >> ['vm_area_struct']] > >>> >> >>> >>> >> 0x4 : mm_rb ['rb_root'] > >>> >> >>> >>> >> 0x8 : mmap_cache ['pointer', > >>> >> >>> >>> >> ['vm_area_struct']] > >>> >> >>> >>> >> 0xc : get_unmapped_area ['pointer', > >>> >> >>> >>> >> ['void']] > >>> >> >>> >>> >> 0x10 : get_unmapped_exec_area ['pointer', > >>> >> >>> >>> >> ['void']] > >>> >> >>> >>> >> 0x14 : unmap_area ['pointer', > >>> >> >>> >>> >> ['void']] > >>> >> >>> >>> >> 0x18 : mmap_base ['unsigned

> >>> >> >>> >>> >> 0x1c : task_size ['unsigned

> >>> >> >>> >>> >> ..... > >>> >> >>> >>> >> > >>> >> >>> >>> >> Can you paste the output of that command? > >>> >> >>> >>> >> > >>> >> >>> >>> >> Thanks for your patience, > >>> >> >>> >>> >> Michael > >>> >> >>> >>> >> > >>> >> >>> >>> >> > >>> >> >>> >>> >> On Thu, Mar 21, 2013 at 10:12 AM, Edwin Smulders > >>> >> >>> >>> >> &lt;edwin.smulders(a)gmail.com&gt; wrote: > >>> >> >>> >>> >>> > >>> >> >>> >>> >>> Yes, also it seems that I was wrong about > >>> >> >>> >>> >>> start_brk/brk, so > >>> >> >>> >>> >>> i > >>> >> >>> >>> >>> guess > >>> >> >>> >>> >>> they just overflowed. > >>> >> >>> >>> >>> http://paste.ubuntu.com/5634126/ > >>> >> >>> >>> >>> > >>> >> >>> >>> >>> On 21 March 2013 14:44, Michael Ligh > >>> >> >>> >>> >>> &lt;michael.hale(a)gmail.com&gt; > >>> >> >>> >>> >>> wrote: > >>> >> >>> >>> >>> > Hey Edwin, > >>> >> >>> >>> >>> > > >>> >> >>> >>> >>> > Can you use linux_volshell and dt() the task.mm > >>> >> >>> >>> >>> > struct? > >>> >> >>> >>> >>> > Do > >>> >> >>> >>> >>> > start_stack > >>> >> >>> >>> >>> > and arg_start show up as unsigned? > >>> >> >>> >>> >>> > > >>> >> >>> >>> >>> > MHL > >>> >> >>> >>> >>> > > >>> >> >>> >>> >>> > Sent from my iPhone > >>> >> >>> >>> >>> > > >>> >> >>> >>> >>> > On Mar 21, 2013, at 7:29 AM, Edwin Smulders > >>> >> >>> >>> >>> > &lt;edwin.smulders(a)gmail.com&gt; > >>> >> >>> >>> >>> > wrote: > >>> >> >>> >>> >>> > > >>> >> >>> >>> >>> >> I'd like to expand a bit more on this issue. I

> >>> >> >>> >>> >>> >> think > >>> >> >>> >>> >>> >> it's > >>> >> >>> >>> >>> >> just a > >>> >> >>> >>> >>> >> formatting issue, now that I'm actually using

> >>> >> >>> >>> >>> >> to > >>> >> >>> >>> >>> >> develop > >>> >> >>> >>> >>> >> my > >>> >> >>> >>> >>> >> own > >>> >> >>> >>> >>> >> plugin I noticed that the values I get from the > >>> >> >>> >>> >>> >> task.mm.start_stack, > >>> >> >>> >>> >>> >> task.mm.arg_start and several other values are > >>> >> >>> >>> >>> >> actually > >>> >> >>> >>> >>> >> negative > >>> >> >>> >>> >>> >> numbers. task.mm.start_brk/task.mm.brk seem to be > >>> >> >>> >>> >>> >> ok, > >>> >> >>> >>> >>> >> not > >>> >> >>> >>> >>> >> sure > >>> >> >>> >>> >>> >> why. > >>> >> >>> >>> >>> >> > >>> >> >>> >>> >>> >> On 4 March 2013 10:02, Edwin Smulders > >>> >> >>> >>> >>> >> &lt;edwin.smulders(a)gmail.com&gt; > >>> >> >>> >>> >>> >> wrote: > >>> >> >>> >>> >>> >>> Here's /proc/1264/maps > >>> >> >>> >>> >>> >>> > >>> >> >>> >>> >>> >>> http://paste.ubuntu.com/5584610/ > >>> >> >>> >>> >>> >>> > >>> >> >>> >>> >>> >>> On 1 March 2013 18:01, Edwin Smulders > >>> >> >>> >>> >>> >>> &lt;edwin.smulders(a)gmail.com&gt; > >>> >> >>> >>> >>> >>> wrote: > >>> >> >>> >>> >>> >>>> Thanks for the quick response. > >>> >> >>> >>> >>> >>>> Sadly, I can't access my VMs at home, so I'll

> >>> >> >>> >>> >>> >>>> the > >>> >> >>> >>> >>> >>>> /proc/<pid>/maps first thing in the morning on > >>> >> >>> >>> >>> >>>> monday. > >>> >> >>> >>> >>> >>>> > >>> >> >>> >>> >>> >>>> Cheers, > >>> >> >>> >>> >>> >>>> Edwin > >>> >> >>> >>> >>> >>>> > >>> >> >>> >>> >>> >>>> On 1 March 2013 17:29, Michael Hale Ligh > >>> >> >>> >>> >>> >>>> &lt;michael.hale(a)gmail.com&gt; > >>> >> >>> >>> >>> >>>> wrote: > >>> >> >>> >>> >>> >>>>> Ah, this has to do with the fact that a long

> >>> >> >>> >>> >>> >>>>> unsigned > >>> >> >>> >>> >>> >>>>> long > >>> >> >>> >>> >>> >>>>> on > >>> >> >>> >>> >>> >>>>> x86 Linux > >>> >> >>> >>> >>> >>>>> is actually 8 bytes (instead of 4 like on > >>> >> >>> >>> >>> >>>>> Windows). > >>> >> >>> >>> >>> >>>>> > >>> >> >>> >>> >>> >>>>> We'll take a look at changing the formatting > >>> >> >>> >>> >>> >>>>> specification > >>> >> >>> >>> >>> >>>>> to > >>> >> >>> >>> >>> >>>>> account for > >>> >> >>> >>> >>> >>>>> this difference in sizes, and if it can't be

> >>> >> >>> >>> >>> >>>>> easily > >>> >> >>> >>> >>> >>>>> before > >>> >> >>> >>> >>> >>>>> the > >>> >> >>> >>> >>> >>>>> 2.3 > >>> >> >>> >>> >>> >>>>> release, then we'll revert the patch in r3090

> >>> >> >>> >>> >>> >>>>> re-incorporate > >>> >> >>> >>> >>> >>>>> mask_number. > >>> >> >>> >>> >>> >>>>> > >>> >> >>> >>> >>> >>>>> Please still send the output of

> >>> >> >>> >>> >>> >>>>> just > >>> >> >>> >>> >>> >>>>> so > >>> >> >>> >>> >>> >>>>> we > >>> >> >>> >>> >>> >>>>> know > >>> >> >>> >>> >>> >>>>> how it > >>> >> >>> >>> >>> >>>>> looks for the future. > >>> >> >>> >>> >>> >>>>> MHL > >>> >> >>> >>> >>> >>>>> > >>> >> >>> >>> >>> >>>>> > >>> >> >>> >>> >>> >>>>> On Fri, Mar 1, 2013 at 10:53 AM, Michael Hale > >>> >> >>> >>> >>> >>>>> Ligh > >>> >> >>> >>> >>> >>>>> &lt;michael.hale(a)gmail.com&gt; > >>> >> >>> >>> >>> >>>>> wrote: > >>> >> >>> >>> >>> >>>>>> > >>> >> >>> >>> >>> >>>>>> Thanks for reporting. We just recently

> >>> >> >>> >>> >>> >>>>>> the > >>> >> >>> >>> >>> >>>>>> mask_number > >>> >> >>> >>> >>> >>>>>> function > >>> >> >>> >>> >>> >>>>>> > >>> >> >>> >>> >>> >>>>>> > >>> >> >>> >>> >>> >>>>>> > >>> >> >>> >>> >>> >>>>>> (

> >>> >> >>> >>> >>> >>>>>> 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 > >>> >> >>> >>> >>> >>>>>> &lt;atcuno(a)gmail.com&gt; > >>> >> >>> >>> >>> >>>>>> 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

> >>> >> >>> >>> >>> >>>>>>> &lt;edwin.smulders(a)gmail.com&gt; > >>> >> >>> >>> >>> >>>>>>> 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

> >>> >> >>> >>> >>> >>>>>>>> tracker > >>> >> >>> >>> >>> >>>>>>>> with > >>> >> >>> >>> >>> >>>>>>>> the > >>> >> >>> >>> >>> >>>>>>>> steps > >>> >> >>> >>> >>> >>>>>>>> I've followed to produce this. > >>> >> >>> >>> >>> >>>>>>>> > >>> >> >>> >>> >>> >>>>>>>> Cheers, > >>> >> >>> >>> >>> >>>>>>>> Edwin > >>> >> >>> >>> >>> >>>>>>>> > >>> >> >>> >>> >>> >>>>>>>>

> >>> >> >>> >>> >>> >>>>>>>> Vol-users mailing list > >>> >> >>> >>> >>> >>>>>>>> Vol-users(a)volatilityfoundation.org > >>> >> >>> >>> >>> >>>>>>>> > >>> >> >>> >>> >>> >>>>>>>> > >>> >> >>> >>> >>> >>>>>>>> > >>> >> >>> >>> >>> >>>>>>>> > >>> >> >>> >>> >>> >>>>>>>>

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