how to get to the src file given a caller address?

03-02-06, 05:46 PM

Kenny Liew

Hi,
I'm trying to trace a memory leak and managed to get the caller's address
(CallersAddress) for my driver. How do I pinpoint which src line it is?

cheers

03-03-06, 08:05 AM

Jeffrey Tan[MSFT]

Hi kendolew,

Thanks for your post!

I am not sure about your debugging context. Are you doing dump debugging,
local kernel mode debugging or remote kernel mode debugging?

Normally, we can use MAP file to get the source line code regarding certain
memory address. If you have got all the symbols loaded correct for your
binaries, you can enable the source line code in the debugger(by using
"l+l" command ) and use "ln(list nearest symbol)" command to display the
nestest symbol and source code information.

For more information, please refer to another discussion in this group:
http://groups.google.com/group/micro...thread/thread/
72f572555f16afec/cb011df0fc93bf90?lnk=st&q=windbg+nearest+symbol&rn um=1&hl=z
h-CN#cb011df0fc93bf90

Hope this helps!

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

03-06-06, 10:38 AM

Kenny Liew

Hi Jeffrey,
Thanks for the answer. I'm doing remote kernel mode debugging for my driver,
and it seems that driver verifier is crashing when a memory leak has been
detected. The problem was, the tag ("wdm") on the memory pool doesn't show
it's obviously mine, but I suspect it might be mine as there're string
allocation/initialization going on (presumably with default tags). All I was
given was the allocated byte size, and the caller's address. If I could trace
to the source line, then it'll solve my problem.
Any ideas?

cheers
Kenny

03-06-06, 03:08 PM

Skywing

The debugger should show this for you if you have the correct symbols loaded
for your driver.

"Kenny Liew" <kendolew> wrote in message
news:7cc4
[..]

03-07-06, 09:55 AM

Jeffrey Tan[MSFT]

Hi Kenny,

Thanks for your feedback

Have you tried the suggestion I provided in first reply? With these
technologies, can you identify the source code line correctly?

Thanks

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

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