Bug Check 0xC2 with parameter 1 0x44 ??

NTDEV
1

Hi,
I m getting Bug Check 0xC2: BAD_POOL_CALLER with following parameters :
Param1 - 0x44
Param2 - 0
Param3 - 0x0000008
Param4 - 0

Can u please comment on this bug check code with these parameters ?
As the DDK doesn’t comment on this bug check code with parameter 1 =
0x44.
This bug check code is being generated on the Windows 2003 Server m/c.

Regards,
Arvind,

2

Don’t really know what 44 means, but I suspect you’ll have a pretty easy
task in finding what caused it, unless the caller that called KeFreePool
wasn’t in your driver, in which case you’re probably overwriting someone
elses data and causing a pool corruption that way.

Running your driver with Driver verifier may be a way to track down the
problem, as driver verifier has a number of extra checks that are done on
pool allocatios in general, and helps identify when the driver is doing
“stupid” things to memory blocks.

–
Mats

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xxxxx@lists.osr.com wrote on 02/04/2005 05:28:40 PM:

Hi,
I m getting Bug Check 0xC2: BAD_POOL_CALLER with following parameters
:
Param1 - 0x44
Param2 - 0
Param3 - 0x0000008
Param4 - 0

Can u please comment on this bug check code with these parameters ?
As the DDK doesn’t comment on this bug check code with parameter 1 =
0x44.
This bug check code is being generated on the Windows 2003 Server
m/c.

Regards,
Arvind,

Questions? First check the Kernel Driver FAQ at http://www.
osronline.com/article.cfm?id=256

You are currently subscribed to ntdev as: xxxxx@3dlabs.com
To unsubscribe send a blank email to xxxxx@lists.osr.com

ForwardSourceID:NT0000C2D6

3

What does !analyze -v tell you? !analyze is usually more up to date
then the docs are.

d

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Mats PETERSSON
Sent: Friday, February 04, 2005 9:27 AM
To: Windows System Software Devs Interest List
Subject: Re: [ntdev] Bug Check 0xC2 with parameter 1 0x44 ??

Don’t really know what 44 means, but I suspect you’ll have a pretty easy
task in finding what caused it, unless the caller that called KeFreePool
wasn’t in your driver, in which case you’re probably overwriting someone
elses data and causing a pool corruption that way.

Running your driver with Driver verifier may be a way to track down the
problem, as driver verifier has a number of extra checks that are done
on
pool allocatios in general, and helps identify when the driver is doing
“stupid” things to memory blocks.

–
Mats

-------- Notice --------
The information in this message is confidential and may be legally
privileged. It is intended solely for the addressee. Access to this
message by anyone else is unauthorized. If you are not the intended
recipient, any disclosure, copying or distribution of the message, or
any
action taken by you in reliance on it, is prohibited and may be
unlawful.
If you have received this message in error, please delete it and contact
the sender immediately. Thank you.

xxxxx@lists.osr.com wrote on 02/04/2005 05:28:40 PM:

Hi,
I m getting Bug Check 0xC2: BAD_POOL_CALLER with following
parameters
:
Param1 - 0x44
Param2 - 0
Param3 - 0x0000008
Param4 - 0

Can u please comment on this bug check code with these parameters
?
As the DDK doesn’t comment on this bug check code with parameter 1
=
0x44.
This bug check code is being generated on the Windows 2003 Server
m/c.

Regards,
Arvind,

Questions? First check the Kernel Driver FAQ at http://www.
osronline.com/article.cfm?id=256

You are currently subscribed to ntdev as: xxxxx@3dlabs.com
To unsubscribe send a blank email to xxxxx@lists.osr.com

ForwardSourceID:NT0000C2D6

Questions? First check the Kernel Driver FAQ at
http://www.osronline.com/article.cfm?id=256

You are currently subscribed to ntdev as: xxxxx@windows.microsoft.com
To unsubscribe send a blank email to xxxxx@lists.osr.com

4

Arvind wrote:

I m getting Bug Check 0xC2: BAD_POOL_CALLER with following parameters :
Param1 - 0x44
Param2 - 0
Param3 - 0x0000008
Param4 - 0

It would be a lot easier if you told us a BIT about what you were doing
when this bugcheck occurred, you know. Or if you were on an AMD-64, an
x86, or an Itanium.

I haven’t seen this bug check before in real life, but I believe it can
be caused by passing a bad pointer to ExFreePool or ExFreePoolWithTag.

Like the other BAD_POOL_CALLER BugChecks with codes in the 0x40s, the
Param2 argument would be the pointer to the starting address of the
segment you’re freeing. Zero? Hmmmm…

If that’s less helpful than you need, please give us a BIT more
information to go on.

Peter
OSR