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Bug Check 0xC9: DRIVER_VERIFIER_IOMANAGER_VIOLATION

The DRIVER_VERIFIER_IOMANAGER_VIOLATION bug check has a value of 0x000000C9. This is the bug check code for all Driver Verifier I/O Verification violations.

Fontos

This article is for programmers. If you're a customer who has received a blue screen error code while using your computer, see Troubleshoot blue screen errors.

DRIVER_VERIFIER_IOMANAGER_VIOLATION Parameters

When Driver Verifier is active and I/O Verification is selected, various I/O violations will cause this bug check to be issued. Parameter 1 identifies the type of violation.

Parameter 1 Parameter 2 Parameter 3 Parameter 4 Cause of Error

0x01

Address of IRP being freed

0

0

The driver attempted to free an object whose type is not IO_TYPE_IRP.

0x02

Address of IRP being freed

0

0

The driver attempted to free an IRP that is still associated with a thread.

0x03

Address of IRP being sent

0

0

The driver passed IoCallDriver an IRP Type not equal to IRP_TYPE.

0x04

Address of device object

0

0

The driver passed IoCallDriver an invalid device object.

0x05

Address of device object associated with offending driver

IRQL before IoCallDriver

IRQL after IoCallDriver

The IRQL changed during a call to the driver dispatch routine.

0x06

IRP status

Address of IRP being completed

0

The driver called IoCompleteRequest with a status marked as pending (or equal to -1).

0x07

Address of cancel routine

Address of IRP being completed

0

The driver called IoCompleteRequest while its cancel routine was still set.

0x08

Address of device object

IRP major function code

Exception status code

The driver passed IoBuildAsynchronousFsdRequest an invalid buffer.

0x09

Address of device object

I/O control code

Exception status code

The driver passed IoBuildDeviceIoControlRequest an invalid buffer.

0x10

Current IRQL

Reserved

Reserved

IoCallDriver was called above DISPATCH_LEVEL.

0x11

Driver fast I/O dispatch routine address

IRQL before calling driver dispatch routine

Current IRQL

IoCallDriver was called above DISPATCH_LEVEL.

0x12

Driver dispatch routine address

IRQL before calling driver dispatch routine

Current IRQL

IoCallDriver was called above DISPATCH_LEVEL.

0x0A

Address of device object

0

0

The driver passed IoInitializeTimer a device object with an already-initialized timer.

0x0C

Address of I/O status block

0

0

The driver passed an I/O status block to an IRP, but this block is allocated on a stack which has already unwound past that point.

0x0D

Address of user event object

0

0

The driver passed a user event to an IRP, but this event is allocated on a stack which has already unwound past that point.

0x0E

Current IRQL

Address of IRP

0

The driver called IoCompleteRequest with IRQL > DISPATCH_LEVEL.

0x0F

Address of the device object to which the IRP is being sent

Pointer to the IRP

Pointer to file object

The driver sent a create request with a file object that has been closed, or that had its open canceled.

In addition to the errors mentioned in the previous table, there are a number of I/O Verification errors that will cause Driver Verifier to halt the system, but which are not actually bug checks.

These errors cause messages to be displayed on the blue screen, in a crash dump file, and in a kernel debugger. These messages will appear differently in each of these locations. When these errors occur, the hexadecimal bug check code 0xC9 and the bug check string DRIVER_VERIFIER_IOMANAGER_VIOLATION do not appear on the blue screen or in the debugger, although they will appear in a crash dump file.

On the blue screen, the following data will be displayed:

  • The message IO SYSTEM VERIFICATION ERROR.

  • The message WDM DRIVER ERROR XXX, where XXX is a hexadecimal code representing the specific error. (See the table below for a list of the I/O error codes and their meanings.)

  • The name of the driver which caused the error.

  • Typically, the address in the driver's code where the error was detected (Parameter 2).

If a kernel-mode crash dump has been enabled, the following information will appear in the crash dump file:

  • The message BugCheck 0xC9 (DRIVER_VERIFIER_IOMANAGER_VIOLATION).

  • The hexadecimal I/O error code. (See the table below for a list of the I/O error codes and their meanings.)

  • Typically, the address in the driver's code where the error was detected (Parameter 2).

If a kernel debugger is attached to the system which has caused this violation, the following information will be sent to the debugger:

  • The message WDM DRIVER ERROR, along with an assessment of the severity of the error.

  • The name of the driver which caused the error.

  • A descriptive string which explains the cause of this error. Often additional information is passed along, such as a pointer to the IRP or a pointer to the device object or IRQL information. (See the table below for a list of these descriptive strings and what additional information is specified.)

  • A query for further action. Possible responses are b (break), i (ignore), z (zap), r (remove), or d (disable). Instructing the operating system to continue allows you to see what would happen "down the line" if this error had not occurred. Of course, this often will lead to additional bug checks. The "zap" option will actually remove the breakpoint that caused this error to be discovered.

Note   No other bug checks can be ignored in this manner. Only this kind of I/O Verification errors can be ignored, and even these errors can only be ignored if a kernel debugger is attached.

The following table lists those I/O Verification errors that can appear.

I/O Error Code Severity Cause of Error

0x200

Unknown

This code covers all unknown I/O Verification errors.

0x201

Fatal error

A device is deleting itself while there is another device beneath it in the driver stack. This may be because the caller has forgotten to call IoDetachDevice first, or the lower driver may have incorrectly deleted itself.

Param 2 - The address in the driver's code where the error was detected.

0x202

Fatal error

A driver has attempted to detach from a device object that is not attached to anything. This may occur if detach was called twice on the same device object.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - Device object address.

0x203

Fatal error

A driver has called IoCallDriver without setting the cancel routine in the IRP to NULL.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x204

Fatal error

The caller has passed in NULL as a device object. This is fatal.

Param 2 - Reserved

Param 3 - Reserved

0x205

Fatal error

The caller is forwarding an IRP that is currently queued beneath it. The code handling IRPs returning STATUS_PENDING in this driver appears to be broken.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x206

Fatal error

The caller has incorrectly forwarded an IRP (control field not zeroed). The driver should use IoCopyCurrentIrpStackLocationToNext or IoSkipCurrentIrpStackLocation.

Param 2 - Reserved

Param 3 - Reserved

0x207

Fatal error

The caller has manually copied the stack and has inadvertently copied the upper layer's completion routine. The driver should use IoCopyCurrentIrpStackLocationToNext.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x208

Fatal error

This IRP is about to run out of stack locations. Someone may have forwarded this IRP from another stack.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x209

Fatal error

The caller is completing an IRP that is currently queued beneath it. The code handling IRPs returning STATUS_PENDING in this driver appears to be broken.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x20A

Fatal error

The caller of IoFreeIrp is freeing an IRP that is still in use.

Param 2 - Reserved

Param 3 - Reserved

0x20B

Fatal error

The caller of IoFreeIrp is freeing an IRP that is still in use.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x20C

Fatal error

The caller of IoFreeIrp is freeing an IRP that is still queued against a thread.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x20D

Fatal error

The caller of IoInitializeIrp has passed an IRP that was allocated with IoAllocateIrp. This is illegal and unnecessary, and has caused a quota leak. Check the documentation for IoReuseIrp if this IRP is being recycled.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x20E

Non-fatal error

A PNP IRP has an invalid status. (Any PNP IRP must have its status initialized to STATUS_NOT_SUPPORTED.)

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x20F

Non-fatal error

A Power IRP has an invalid status. (Any Power IRP must have its status initialized to STATUS_NOT_SUPPORTED.)

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x210

Non-fatal error

A WMI IRP has an invalid status. (Any WMI IRP must have its status initialized to STATUS_NOT_SUPPORTED.)

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x211

Non-fatal error

The caller has forwarded an IRP while skipping a device object in the stack. The caller is probably sending IRPs to the PDO instead of to the device returned by IoAttachDeviceToDeviceStack.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x212

Non-fatal error

The caller has trashed or has not properly copied the IRP's stack.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x213

Non-fatal error

The caller has changed the status field of an IRP it does not understand.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x214

Non-fatal error

The caller has changed the information field of an IRP it does not understand.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x215

Non-fatal error

A non-successful non-STATUS_NOT_SUPPORTED IRP status for IRP_MJ_PNP is being passed down stack. Failed PNP IRPs must be completed.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x216

Non-fatal error

The previously-set IRP_MJ_PNP status has been converted to STATUS_NOT_SUPPORTED. This failure status is reserved for use by the operating system. Drivers cannot fail a PnP IRP with this value.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x217

Non-fatal error

The driver has not handled a required IRP. The driver must update the status of the IRP to indicate whether or not it has been handled.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x218

Non-fatal error

The driver has responded to an IRP that is reserved for other device objects elsewhere in the stack.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x219

Non-fatal error

A non-successful non-STATUS_NOT_SUPPORTED IRP status for IRP_MJ_POWER is being passed down stack. Failed POWER IRPs must be completed.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x21A

Non-fatal error

The previously-set IRP_MJ_POWER status has been converted to STATUS_NOT_SUPPORTED.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x21B

Non-fatal error

A driver has returned a suspicious status. This is probably due to an uninitialized variable bug in the driver.

Param 3 - IRP address.

0x21C

Warning

The caller has copied the IRP stack but not set a completion routine. This is inefficient -- use IoSkipCurrentIrpStackLocation instead.

Param 2 - Reserved

Param 3 - Reserved

0x21D

Fatal error

An IRP dispatch handler has not properly detached from the stack below it upon receiving a remove IRP.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x21E

Fatal error

An IRP dispatch handler has not properly deleted its device object upon receiving a remove IRP.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x21F

Non-fatal error

A driver has not filled out a dispatch routine for a required IRP major function.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x220

Non-fatal error

IRP_MJ_SYSTEM_CONTROL has been completed by someone other than the ProviderId. This IRP should either have been completed earlier or should have been passed down.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - ProviderId.

0x221

Fatal error

An IRP dispatch handler for a PDO has deleted its device object, but the hardware has not been reported as missing in a bus relations query.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x222

Fatal error

A Bus Filter's IRP dispatch handler has detached upon receiving a remove IRP when the PDO is still alive. Bus Filters must clean up in FastIoDetach callbacks.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x223

Fatal error

An IRP dispatch handler for a bus filter has deleted its device object, but the PDO is still present. Bus filters must clean up in FastIoDetach callbacks.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x224

Fatal error

An IRP dispatch handler has returned a status that is inconsistent with the IRP's IoStatus.Status field.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Expected status code.

0x225

Non-fatal error

An IRP dispatch handler has returned a status that is illegal (0xFFFFFFFF). This is probably due to an uninitialized stack variable. To debug this error, use the ln (List Nearest Symbols) command with the specified address.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Status code.

0x226

Fatal error

An IRP dispatch handler has returned without passing down or completing this IRP, or someone forgot to return STATUS_PENDING.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x227

Fatal error

An IRP completion routine is in pageable code. (This is never permitted.)

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x228

Non-fatal error

A driver's completion routine has not marked the IRP pending if the PendingReturned field was set in the IRP passed to it. This may cause Windows to hang, especially if an error is returned by the stack.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x229

Fatal error

A cancel routine has been set for an IRP that is currently being processed by drivers lower in the stack, possibly stomping their cancel routine.

Param 2 - Reserved.

Param 3 - Reserved.

0x22A

Non-fatal error

The physical device object (PDO) has not responded to a required IRP.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x22B

Non-fatal error

The physical device object (PDO) has forgotten to fill out the device relation list with the PDO for the TargetDeviceRelation query.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x22C

Fatal error

The code implementing the TargetDeviceRelation query has not called ObReferenceObject on the PDO.

Param 2 - Reserved.

Param 3 - Reserved.

0x22D

Non-fatal error

The caller has completed a IRP_MJ_PNP it didn't understand instead of passing it down.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x22E

Non-fatal error

The caller has completed a successful IRP_MJ_PNP instead of passing it down.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x22F

Non-fatal error

The caller has completed an untouched IRP_MJ_PNP (instead of passing the IRP down), or non-PDO has failed the IRP using illegal value of STATUS_NOT_SUPPORTED.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x230

Non-fatal error

The caller has completed an IRP_MJ_POWER it didn't understand instead of passing it down.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x231

Fatal error

The caller has completed a successful IRP_MJ_POWER instead of passing it down.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x232

Non-fatal error

The caller has completed an untouched IRP_MJ_POWER (instead of passing the IRP down), or non-PDO has failed the IRP using illegal value of STATUS_NOT_SUPPORTED.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x233

Non-fatal error

The version field of the query capabilities structure in a query capabilities IRP was not properly initialized.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x234

Non-fatal error

The size field of the query capabilities structure in a query capabilities IRP was not properly initialized.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x235

Non-fatal error

The address field of the query capabilities structure in a query capabilities IRP was not properly initialized to -1.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x236

Non-fatal error

The UI Number field of the query capabilities structure in a query capabilities IRP was not properly initialized to -1.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x237

Fatal error

A driver has sent an IRP that is restricted for system use only.

Param 2 - Reserved.

Param 3 - Reserved.

0x238

Warning

The caller of IoInitializeIrp has passed an IRP that was allocated with IoAllocateIrp. This is illegal, unnecessary, and negatively impacts performance in normal use. If this IRP is being recycled, see IoReuseIrp in the Windows Driver Kit.

Param 2 - Reserved.

Param 3 - Reserved.

0x239

Warning

The caller of IoCompleteRequest is completing an IRP that has never been forwarded via a call to IoCallDriver or PoCallDriver. This may be a bug.

Param 2 - Reserved.

Param 3 - Reserved.

0x23A

Fatal error

A driver has forwarded an IRP at an IRQL that is illegal for this major code.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x23B

Non-fatal error

The caller has changed the status field of an IRP it does not understand.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

The following table lists additional I/O Verification errors that can appear. These errors appear when Enhanced I/O Verification is activated. For more information, see Enhanced I/O Verification.

I/O Error Code Severity Cause of Error

0x23C

Fatal error

A driver has completed an IRP without setting the cancel routine in the IRP to NULL.

Param 2 - Reserved.

Param 3 - Reserved.

0x23D

Non-fatal error

A driver has returned STATUS_PENDING but did not mark the IRP pending via a call to IoMarkIrpPending.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Status code.

0x23E

Non-fatal error

A driver has marked an IRP pending but didn't return STATUS_PENDING.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Status code.

0x23F

Fatal error

A driver has not inherited the DO_POWER_PAGABLE bit from the stack it has attached to.

Param 2 - Reserved.

Param 3 - Reserved.

0x240

Fatal error

A driver is attempting to delete a device object that has already been deleted via a prior call to IoDeleteDevice.

Param 2 - The address in the driver's code where the error was detected.

Param 2 - Reserved.

Param 3 - Reserved.

0x241

Fatal error

A driver has detached its device object during a surprise remove IRP.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x242

Fatal error

A driver has deleted its device object during a surprise remove IRP.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x243

Fatal error

A driver has failed to clear the DO_DEVICE_INITIALIZING flag at the end of AddDevice.

Param 2 - Reserved.

Param 3 - Reserved.

Param 4 -

0x244

Fatal error

A driver has not copied either the DO_BUFFERED_IO or the DO_DIRECT_IO flag from the device object it is attaching to.

Param 2 - Reserved.

Param 3 - Reserved.

0x245

Fatal error

A driver has set both the DO_BUFFERED_IO and the DO_DIRECT_IO flags. These flags are mutually exclusive.

Param 2 - Reserved.

Param 3 - Reserved.

0x246

Fatal error

A driver has failed to copy the DeviceType field from the device object it is attaching to.

Param 2 - Reserved.

Param 3 - Reserved.

0x247

Fatal error

Param 2 - Reserved.

Param 3 - Reserved.

A driver has failed an IRP that cannot legally be failed.

0x248

Fatal error

A driver has added a device object that is not a PDO to a device relations query.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x249

Non-fatal error

A driver has enumerated two child PDOs that returned identical Device IDs.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - First device object address.

Param 4 - Second device object address.

0x24A

Fatal error

A driver has mistakenly called a file I/O function with IRQL not equal to PASSIVE_LEVEL.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - Reserved.

Param 4 - Reserved.

0x24B

Fatal error

A driver has completed an IRP_MN_QUERY_DEVICE_RELATIONS request of type TargetDeviceRelation as successful, but did not properly fill out the request or forward the IRP to the underlying hardware stack.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - Device object address.

0x24C

Non-fatal error

A driver has returned STATUS_PENDING but did not mark the IRP pending by a call to IoMarkIrpPending.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Status code.

0x24D

Fatal error

A driver has passed an invalid device object to a function that requires a PDO.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Device object address.

0x300

Non-fatal error

A driver has returned a suspicious status. This is probably due to an uninitialized variable bug in the driver.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Suspicious status code.

0x301

Non-fatal error

A driver has forwarded an IRP at IRQL > DISPATCH_LEVEL.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Incorrect IRQL value

0x302

Non-fatal error

A driver has forwarded an IRP at IRQL > = APC_LEVEL.

The I/O Manager will need to queue an APC to complete this request. The APC will not be able to run because the caller is already at APC level, so the caller is likely to deadlock.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Param 4 - Incorrect IRQL value.

0x306

Non-fatal error

The driver is completing an IRP_MJ_PNP (major) and IRP_MN_REMOVE_DEVICE (minor) request with a failure status code.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x307

Non-fatal error

The driver issued an I/O request with an event that was already signaled and received a STATUS_PENDING response. This can result in unwinding before the I/O is complete.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x310

Non-fatal error

The driver is reinitializing an IRP that is still in use.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x311

Non-fatal error

The driver is reinitializing an IRP that was created with IoMakeAssociatedIrp, IoBuildAsynchronousFsdRequest, IoBuildSynchronousFsdRequest, IoBuildDeviceIoControlRequest.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

0x312

Non-fatal error

The caller provided the IRP Status Information field with a value that is greater than the output section of the system buffer.

Param 2 - The address in the driver's code where the error was detected.

Param 3 - IRP address.

Cause

See the description of each code in the Parameters section for a description of the cause.

Resolution

This bug check can only occur when Driver Verifier has been instructed to monitor one or more drivers. If you did not intend to use Driver Verifier, you should deactivate it. For more information, see "How to control Driver Verifier" in Driver Verifier. You might consider updating or removing the driver which caused this problem as well.

If you are the driver developer, use the information obtained through this bug check to fix the bugs in your code.

For full details on Driver Verifier, see Driver Verifier.