Leaked printer change notification handle detected |
Application Verifier break message
Leaked printer change notification handle detected.
Probable cause
A printer change notification handle that was not closed was detected when the application exited. Most likely the thread that opened the handle did not call FindClosePrinterChangeNotification() to close the handle before the thread exited.
Troubleshooting steps
To troubleshoot this stop:
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Determine the thread that opened the printer change notification handle.
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The second parameter of this stop provides the stack address.
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Use the dps command to dump the stack trace.
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The second parameter of this stop provides the stack address.
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Find the first non-winspool and non-vfPrint module name that called vfPrint!VfHookFindFirstPrinterChangeNotification. This is typically found in the 4th stack frame.
For example:
� | Copy Code |
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======================================= VERIFIER STOP 0000A001 : pid 0x13E4: Leaked printer change notification handle detected 00000040 : Printer change notification handle being leaked. 02946F50 : Initialization stack trace. Use dps to dump the stack trace if it is not NULL. 00001040 : Thread id of the last thread using it. 00000000 : Not used. ====================================== 0:000> dps 02946F50 02946f50 0243527a vfPrint!CItemTracker(void *)::Init+0x6a 02946f54 02434e30 vfPrint!CHandleTracker_t(void *)::Init+0x20 02946f58 02434649 vfPrint!VfHookFindFirstPrinterChangeNotification+0x69 02946f5c 7433e548 PRINTUI!VDataNotify::svNotifyStart+0x23 --------- this is the routine that is suspected of creating and not freeing a printer change notification handle |
Information displayed by Application Verifier
Parameter 1�-�Printer change notification handle being leaked.
Parameter 2�-�Initialization stack trace. Use dps to dump the stack trace if it is not NULL.
Parameter 3�-�Thread id of the last thread using it.
Parameter 4�-�Not used.
Additional information
Test Layer:�PrintAPI
Stop code:�0000A001
Severity:�Error
One-time error:�no
Error report:�Break
Log to file:�yes
Create backtrace:�yes