NO_MORE_IRP_STACK_LOCATION

NTFSD
1

Hi,

I’m working on a filter driver on Win2000. Currently my dispatch
routines only print the IRPs and let them PassThrough. When I
load the driver, it doesn’t take too long for the system to
BugCheck with the error of “NO_MORE_IRP_STACK_LOCATION”. My understanding
is that the filter driver doesn’t have control over
the stack size. So what can I do to solve the problem?

Please help!

Raymond

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2

> is that the filter driver doesn’t have control over

the stack size. So what can I do to solve the problem?

It does. The stack size for the attached device must be larger by 1 than by
lower one.

Max

3

Try setting
HKLM\SYSTEM\CurrentControlSet\Services\LanManServer\Parameters\IrpStackSize
to a larger size. This controls the irp stack size that the server code
uses. When you add filters it requires more irp stack locations and
requests from the network use 1 more stack location than local requests.

-----Original Message-----
From: Maxim S. Shatskih [mailto:xxxxx@storagecraft.com]
Sent: Tuesday, February 29, 2000 11:02 AM
To: File Systems Developers Interest List
Subject: [ntfsd] Re: NO_MORE_IRP_STACK_LOCATION

is that the filter driver doesn’t have control over
the stack size. So what can I do to solve the problem?

It does. The stack size for the attached device must be larger by 1 than by
lower one.

Max

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4

In your driver, if you do not copy the stack location properly you will
observe this error.

You should be using IoCopyCurrentIrpStackLocationToNext; it sets up the next
stack location properly. Failing to set it up properly can cause this
problem.

Regards,

Tony

Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http://www.osr.com

-----Original Message-----
From: Raymond Lu [mailto:xxxxx@hotmail.com]
Sent: Tuesday, February 29, 2000 10:02 AM
To: File Systems Developers Interest List
Subject: [ntfsd] NO_MORE_IRP_STACK_LOCATION

Hi,

I’m working on a filter driver on Win2000. Currently my dispatch
routines only print the IRPs and let them PassThrough. When I
load the driver, it doesn’t take too long for the system to
BugCheck with the error of “NO_MORE_IRP_STACK_LOCATION”. My understanding
is that the filter driver doesn’t have control over
the stack size. So what can I do to solve the problem?

Please help!

Raymond

Get Your Private, Free Email at http://www.hotmail.com

You are currently subscribed to ntfsd as: xxxxx@osr.com
To unsubscribe send a blank email to $subst(‘Email.Unsub’)