IRP_URB_DOUBLE_SUBMIT problem

[Abhijit Mmirajkar]

Hi,

I am getting a crash in my driver in long hour tests. Every time the
bugcheck (0xFE) identifies the problem as IRP_URB_DOUBLE_SUBMIT.
The documentation of this says : The caller has submitted an irp that
is already pending in the USB bus driver.

However nowhere in my driver I am re-using an IRP ! Every time I
allocate an IRP and destroy it in the completion. I assume that
IoAllocateIrp will every time give me a fresh IRP and so same IRP will
never be submitted to USB subsystem. I am therefore perplexed why it
would happen so.
Is it that the bugcheck can also occur for some other case than irp
resubmitting?

I also observe that when I try to get the details of the IRP in
question, I get "Could not read device object or _DEVICE_OBJECT not
found" message for the device object associated with the IRP.

Any pointers will be great appreciated.

Thanks and Regards,
Abhijit

[Doron Holan [MSFT]]

this can also apply to the URB associated with the IRP. are you allocating
a URB for each IRP that you send? or are you using a URB embedded in your
device extension?

d

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"Abhijit Mmirajkar" <abhijit....@gmail.com> wrote in message
news:1e16aaca-b181-465b...@v67g2000hse.googlegroups.com...

[Vetzak]

On Feb 4, 12:57 pm, Abhijit Mmirajkar <abhijit.miraj...@gmail.com>
wrote:

I had the same a while ago. I allocated the IRP while I reused the
associated URB. The underlying USBD couldn't cope with this during
endurance testing. In the end, I reused the IRP as well and that
solved the problem.

[jehanzeb....@gmail.com]

How to allocate the IRP and reuse YRB, Can you please explian ?
Thanks