Crash in SpinLock?

NTDEV
1

I’m running my NDIS driver on debug build of XP and it the Verifier
bugchecks at my IRP cancel routine when I call KeAcquireSpinLock. If I
comment the Acquire/Release calls then it works fine. Any clue???
This is what I do in my cancel routine…

ioctlIrp is global struct;

{
KIRQL oldIrql;
KIRQL cancelIrql = Irp->CancelIrql;
//
// release the cancel spinlock now
//

IoReleaseCancelSpinLock(cancelIrql);

KeAcquireSpinLock(&ioctlIrp.irpLock,&oldIrql);
…

}

Thanks
Daniel

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2

> I’m running my NDIS driver on debug build of XP and it the Verifier

bugchecks at my IRP cancel routine when I call KeAcquireSpinLock. If I
comment the Acquire/Release calls then it works fine. Any clue???

I guess it would depend on what the crash is that you’re seeing. Did you
look up the bugcheck code in the DDK Docs?

Peter
OSR

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3

Take in account that when you acquire a spinlock IRQL is set
to DISPATCH_LEVEL. Maybe that is the problem!

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com]On Behalf Of Peter Viscarola
Sent: Thursday, May 31, 2001 10:44 PM
To: NT Developers Interest List
Subject: [ntdev] Re: Crash in SpinLock?

I’m running my NDIS driver on debug build of XP and it the Verifier
bugchecks at my IRP cancel routine when I call KeAcquireSpinLock. If I
comment the Acquire/Release calls then it works fine. Any clue???

I guess it would depend on what the crash is that you’re seeing. Did you
look up the bugcheck code in the DDK Docs?

Peter
OSR

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