Win2000 client crash (Driver IRQL not less or equal)

Andrew van der Stock ajv "at" greebo.net
Thu, 07 Mar 2002 08:44:33 +0000


> *** STOP: 0x000000D1  (0x00000006,0x00000002,0x00000000,0x00000006)
> DRIVER_IRQL_NOT_LESS_OR_EQUAL

These are the rarest of all blue screens. Can you also supply a list of
all your devices, and the driver version you're using? Are many devices
sharing the same interrupt? Are you running the latest service pack and
hotfixes?

Looking at TechNet, the D1 stop is from tcpip.sys and other filters,
such as network cards with specialist needs, firewalls and virus
checkers. 

I last got this type of blue screen at a customer's site with a dodgy
network card that was trying to do bad things, whilst IRQ sharing on IRQ
11 with five other devices. I'm sure the card would be fine in a less
busy system, but on this system with that many devices, non-repeatable
horror story. Replaced the card with an Intel Ethernet Express Pro
10/100+ and re-service packed, no more problems. 

Try this:

* start hammering the network by doing many many file copies from the PC
to another one
* drag windows around with full window drag and click randomly in the UI
* set up a port scan from a remote computer and scan each port in order

The three together will probably cause the bug to surface. Finding out
which driver it is - will be hard if it's not already on screen. 

Andrew
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