Bug Check 0xD1: DRIVER_IRQL_NOT_LESS_OR_EQUAL
The DRIVER_IRQL_NOT_LESS_OR_EQUAL bug check has a value of 0x000000D1. This indicates that a kernel-mode driver attempted to access pageable memory at a process IRQL that was too high.
Important Info If You Have Received a STOP Code
If you received a blue screen error, or stop code, the computer has shut down abruptly to protect itself from data loss. A hardware device, its driver, or related software might have caused this error. If your copy of Windows came with your computer, call the manufacturer of your computer. If you purchased Windows separately from your computer, Microsoft provides support. To find contact info for Microsoft or your computer manufacturer, Contact Support.
If you have experience with computers and want to try to recover from this error, follow the steps provided in the Microsoft article Resolving STOP (Blue Screen) Errors in Windows.
These actions might prevent an error like this from happening again:
- Download and install updates and device drivers for your computer from Windows Update.
- Scan your computer for computer viruses.
- Check your hard disk for errors.
DRIVER_IRQL_NOT_LESS_OR_EQUAL Parameters
The following parameters are displayed on the blue screen.
| Parameter | Description |
|---|---|
|
1 |
Memory referenced |
|
2 |
IRQL at time of reference |
|
3 |
0: Read 1: Write 8: Execute |
|
4 |
Address that referenced memory |
Cause
A driver tried to access an address that is pageable (or that is completely invalid) while the IRQL was too high.
This bug check is usually caused by drivers that have used improper addresses.
If the first parameter has the same value as the fourth parameter, and the third parameter indicates an execute operation, this bug check was likely caused by a driver that was trying to execute code when the code itself was paged out. Possible causes for the page fault include the following:
-
The function was marked as pageable and was running at an elevated IRQL (which includes obtaining a lock).
-
The function call was made to a function in another driver, and that driver was unloaded.
-
The function was called by using a function pointer that was an invalid pointer.
Resolution
To begin debugging, use a kernel debugger to get a stack trace.
If the problem is caused by the driver that you are developing, make sure that the function that was executing at the time of the bug check is not marked as pageable or does not call any other inline functions that could be paged out.
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Build date: 4/9/2013
