Verifying windows 7 drivers

This information can be useful for understanding scenarios in which a thread is unexpectedly running in a critical region or is trying to leave a critical region that it has left already. In earlier Windows versions, the log contained just one stack trace for each IRP that Driver Verifier forced to be pending. This was the stack trace from the time when IoCompleteRequest was called for the first time for the forced pending IRP. Windows 7 has at least two log entries, possibly more than two, for each forced pending IRP:.

This log is displayed by using! In Windows 7, Driver Verifier tries to capture these stack traces:. In Windows 7, the meaningful information about these driver defects is saved by Driver Verifier in memory. Driver Verifier is a tool for monitoring Windows kernel-mode drivers and graphics drivers. Microsoft strongly encourages hardware manufacturers to test their drivers with Driver Verifier to ensure that drivers are not making illegal function calls or causing system corruption.

New Verifier command line options The verifier. Although it also has some limitations, which means that after booting the PC in normal mode, all installed drivers without signature will be discarded.

The other methods may not work on all computers. Its performance depends on the edition of the operating system and the updates installed. Therefore, you may have to try several options before you get the expected results. We are glad that we have been able to help you with your problem.

Describe what has not worked for you. Our specialists will try to respond as quickly as possible. Press ESC to close. Type a number in decimal or hexadecimal. The default value is 7 minutes.

Use the 0x flag to select Systematic low resources simulation option. This number can be entered in decimal or in hexadecimal with an 0x prefix format. Any combination of the following values is allowed. Special Pool. Low Resources Simulation.

Pool Tracking. Deadlock Detection. DMA Verification. Security Checks. IRP Logging. Miscellaneous Checks. DDI compliance checking Starting with Windows 8. Systematic low resources simulation Starting with Windows 8.

DDI compliance checking additional Starting with Windows 8. Kernel synchronization delay fuzzing Starting with Windows 8. VM switch verification Starting with Windows 8. You cannot use this method to activate the Storport Verification options. For information, see Storport Verification. Each positive decimal integer represents a verification class. You can configure which tests to run, which allows you to put a driver through heavy stress loads or through more streamlined testing.

You can also run Driver Verifier on multiple drivers simultaneously, or on one driver at a time. Driver Verifier is not included with Windows 10 S, so we recommend testing driver behavior on Windows 10 instead.

Driver Verifier is not distributed separately as a download package. Run Driver Verifier throughout development and testing of your driver. More specifically, use Driver Verifier for the following purposes:. To find problems early in the development cycle, when they are easier and less costly to correct.

For more information about testing drivers, see Testing a Driver. You should only run Driver Verifier on test computers, or on computers that you are testing and debugging. To get the most benefit from Driver Verifier, you should use a kernel debugger and connect to the test computer.

Select Create standard settings the default task , and select Next. You can also choose Create custom settings to select from predefined settings, or to select individual options. Under Select what drivers to verify , choose one of the selection schemes described in the following table. Useful for testing on computers that are running versions of Windows that do not require signed drivers.