UNEXPECTED_KERNEL_MODE_TRAP

NTDEV
1

Hi,

I am getting an Bug Check 0x7F:UNEXPECTED_KERNEL_MODE_TRAP. It says that
my kernel stack is less than 0x500 bytes. Any idea what could cause such
a problem? My device driver captures video for about 30+ itterations and
then I get this bug check. :frowning: I have read through the msdn and it says
that for p1=8 that there is most likely a hardware problem, but I fail
to believe that. I know it is something I am doing in my driver, just
not sure what it is. Any help would be greatly appreciated.

Thanks,
Miki

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2

What does your trap says ? Use kv to find out trap frame and !trap to find
out the registers status.

  • Vipul

-----Original Message-----
From: Mukul Goyal [mailto:xxxxx@smalcamera.com]
Sent: Monday, November 19, 2001 12:48 PM
To: NT Developers Interest List
Subject: [ntdev] UNEXPECTED_KERNEL_MODE_TRAP

Hi,

I am getting an Bug Check 0x7F:UNEXPECTED_KERNEL_MODE_TRAP. It says that
my kernel stack is less than 0x500 bytes. Any idea what could cause such
a problem? My device driver captures video for about 30+ itterations and
then I get this bug check. :frowning: I have read through the msdn and it says
that for p1=8 that there is most likely a hardware problem, but I fail
to believe that. I know it is something I am doing in my driver, just
not sure what it is. Any help would be greatly appreciated.

Thanks,
Miki

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3

Is it possible you are doing something recursive with a lot of local
variable space in each call?

“Mukul Goyal” @lists.osr.com on 11/19/2001 01:48:24
PM

Please respond to “NT Developers Interest List”

Sent by: xxxxx@lists.osr.com

To: “NT Developers Interest List”
cc:

Subject: [ntdev] UNEXPECTED_KERNEL_MODE_TRAP

Hi,

I am getting an Bug Check 0x7F:UNEXPECTED_KERNEL_MODE_TRAP. It says that
my kernel stack is less than 0x500 bytes. Any idea what could cause such
a problem? My device driver captures video for about 30+ itterations and
then I get this bug check. :frowning: I have read through the msdn and it says
that for p1=8 that there is most likely a hardware problem, but I fail
to believe that. I know it is something I am doing in my driver, just
not sure what it is. Any help would be greatly appreciated.

Thanks,
Miki

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