Re: Access violation in call of TdiBuildInternalDeviceControlIrp() (in Tdi client)

NTDEV
1

For starters, this event exit may run at DISPATCH_LEVEL.
TdiBuildInternalDeviceControlIrp() must be called at PASSIVE_LEVEL.

Second, MmProbeAndLockPages() must be called at PASSIVE_LEVEL if the
concerned pages are pageable, which they would be. I know you didn’t get
that far, but that would have bitten, too.

–
If replying by e-mail, please remove “nospam.” from the address.

James Antognini
Windows DDK MVP

2

Thanks James, I will try to use IoAllocateIrp().