As always, please send the output of !analyze -v. It might also help to post the code around where you are blowing up.
d
Sent from my phone with no t9, all spilling mistakes are not intentional.
From: Vered Zvi
Sent: Tuesday, October 28, 2008 8:36 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] IRQL_NOT_LESS_OR_EQUAL
Hello,
I wrote a WDF driver for a PCI card.
The driver contains writing a buffer using DMA. The DMA controller is implemented in the PCI card.
Upon end of DMA I get an interrupt. I use this interrupt to complete the write request to the driver.
It all works fine. I managed to write several buffers. But sometines I get blue screen with the message:
“IRQL_NOT_LESS_OR_EQUAL”.
The code for handling the DMA and the interrupt upon end of DMA is taken from the WDF samples supplied with the last version of KMDF.
What can cause this situation ?
Thanks.
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