[Vol-users] DPC procedure localization
Jaroslav.BRTAN at firstdata.sk
Mon Jun 3 15:24:53 CDT 2013
Thanks both of you for your help and advice. I will try to verify if the memory is allocated. I have to convert the memory image to the crash dmp.
The --base switch works very well. I overlooked it in the help.
Od: "Michael Hale Ligh" <michael.hale at gmail.com<mailto:michael.hale at gmail.com>>
Datum: po, 6. 3, 2013 16:48
Předmět: [Vol-users] DPC procedure localization
Komu: "George M. Garner Jr." <ggarner_online at gmgsystemsinc.com<mailto:ggarner_online at gmgsystemsinc.com>>
Kopie: "vol-users" <vol-users at volatilityfoundation.org<mailto:vol-users at volatilityfoundation.org>>
Thanks for the explanation George!
Jaroslav - to answer your other question "how can I dump this using the
offset 0x80013000?" you can use the moddump plugin with --base= 0x80013000.
On Mon, Jun 3, 2013 at 10:43 AM, George M. Garner Jr. <
ggarner_online at gmgsystemsinc.com<mailto:ggarner_online at gmgsystemsinc.com>> wrote:
> Kernel timers come and go at a very high rate which leads to a significant
> number of invalid or spurious timer artifacts which result from the fact
> that the memory dump was acquired from the system while it was running.
> Not that the last two timers are signaled and the periods are not
> coherent. It is possible that the last two "timer" objects reside in
> memory that once was a kernel timer object and has since been freed and
> that some of the timer fields (e.g. the routine address) have been
> overwritten with incoherent data. Try running the !pool command on the
> last two timer addresses (0x863ead10 and 0x85e451e8) and see if that memory
> is currently allocated. (I am assuming that you either have or can convert
> your memory dump to MS crashdump format.)
> On 6/3/2013 9:15 AM, BRTAN Jaroslav wrote:
>> Hi all,
>> I'd like to ask you for your help with analysis. The timers module shows
>> that there is a strange DPC at 0x8647e4e0.
>> Timers module output:
>> Offset(V) DueTime Period(ms) Signaled Routine
>> ---------- ------------------------ ---------- ---------- ----------
>> 0x873097d0 0x0000002f:0x2db9d0c3 0 - 0xa7386d8e
>> 0x85b9a2c8 0x8000002d:0x6d7d7c8e 0 - 0x80538a98
>> 0x8a332b20 0x0000002f:0x2ea5d991 0 - 0xb9ddef1a
>> 0x863ead10 0x00010014:0x863ead28 -205...072 Yes 0x8647e4e0
>> 0x85e451e8 0x00010014:0x85e45200 -205...072 Yes 0x8647e4e0
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