USB Audio 2.0 Drivers - Windows drivers
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Driver Verifier – Windows drivers

Driver Verifier screens Home windows kernel-mode drivers and graphics drivers to detect unlawful perform calls or actions that may corrupt the system. Driver Verifier can topic Home windows drivers to a wide range of stresses and checks to seek out improper conduct. You may configure which checks to run, which lets you put a driver via heavy stress masses or via extra streamlined testing. It’s also possible to run Driver Verifier on a number of drivers concurrently, or on one driver at a time.

Warning

  • Working Driver Verifier might trigger the pc to crash.
  • You need to solely run Driver Verifier on computer systems that you’re utilizing for testing and debugging.
  • You have to be within the Directors group on the pc to make use of Driver Verifier.
  • Driver Verifier will not be included in Home windows 10 S, so we advocate testing driver conduct on Home windows 10 as a substitute.

The place can I obtain Driver Verifier?

You need not obtain Driver Verifier, as a result of it’s included with most variations of Home windows in %WinDirpercentsystem32 as Verifier.exe. (Driver Verifier will not be included with Home windows 10 S.) Driver Verifier will not be distributed individually as a obtain package deal.

For details about adjustments in Driver Verifier for Home windows 10 and former variations of Home windows, see Driver Verifier: What’s New.

When to make use of Driver Verifier

Run Driver Verifier all through improvement and testing of your driver. Extra particularly, use Driver Verifier for the next functions:

  • To search out issues early within the improvement cycle, when they’re simpler and less expensive to appropriate.

  • For troubleshooting and debugging check failures and laptop crashes.

  • To watch conduct while you deploy a driver for testing utilizing the WDK, Visible Studio, and the checks from the Home windows {Hardware} Lab Equipment (Home windows HLK) or Home windows {Hardware} Certification Equipment (for Home windows 8.1). For extra details about testing drivers, see Testing a Driver.

Find out how to begin Driver Verifier

You need to solely run Driver Verifier on check computer systems, or on computer systems that you’re testing and debugging. To get probably the most profit from Driver Verifier, it’s best to use a kernel debugger and hook up with the check laptop. For extra details about debugging instruments, see Debugging Instruments for Home windows (WinDbg, KD, CDB, NTSD).

  1. Begin a Command Immediate window by deciding on Run as administrator, and sort verifier to open Driver Verifier Supervisor.

  2. Choose Create normal settings (the default activity), and choose Subsequent.

    It’s also possible to select Create customized settings to pick from predefined settings, or to pick particular person choices. For extra info, see Driver Verifier choices and rule courses and Choosing Driver Verifier Choices.

  3. Below Choose what drivers to confirm, select one of many choice schemes described within the following desk.

    Choice Really helpful use
    Mechanically choose unsigned drivers

    Helpful for testing on computer systems which might be operating variations of Home windows that don’t require signed drivers.

    Mechanically choose drivers constructed for older variations of Home windows

    Helpful for testing driver compatibility with newer variations of Home windows.

    Mechanically choose all drivers put in on this laptop

    Offers most protection by way of the variety of drivers which might be examined on a system. This selection is helpful for check situations the place a driver can work together with different gadgets or drivers on a system.

    This selection can even exhaust the sources obtainable for Particular Pool and a few useful resource monitoring. Testing all drivers can even adversely have an effect on system efficiency.

    Choose driver names from a listing

    Typically, you’ll want to specify which drivers to check.

    Choosing all drivers in a tool stack permits the Enhanced I/O Verification possibility to trace objects and verify compliance as a result of an I/O request packet (IRP) is handed between every of the drivers within the stack, which permits for a better stage of element to be supplied when an error is detected.

    Choose a single driver if you’re operating a check situation that measures system or driver efficiency metrics, or if you wish to allocate the best variety of sources obtainable for detecting reminiscence corruption or useful resource monitoring points (comparable to deadlocks or mutexes). The Particular Pool and I/O Verification choices are more practical when used on one driver at a time.

  4. For those who selected Choose driver names from a listing, choose Subsequent, after which choose a number of particular drivers.

  5. Choose End, after which restart the pc.

Observe

It’s also possible to run Driver Verifier in a Command Immediate window with out beginning Driver Verifier Supervisor. For instance, to run Driver Verifier with the usual settings on a driver referred to as myDriver.sys, you’d use the next command:

verifier /normal /driver myDriver.sys

For extra details about command line choices, see Driver Verifier Command Syntax.

Find out how to management Driver Verifier

You should use both Driver Verifier Supervisor or a command line to regulate Driver Verifier. To begin Driver Verifier Supervisor, see Find out how to begin Driver Verifier, earlier on this matter.

For every of the next actions, you should use Driver Verifier Supervisor or enter a command line.

To cease or reset Driver Verifier

  1. In Driver Verifier Supervisor, choose Delete current settings, after which choose End.

    or

    Enter the next command at a command immediate:

    verifier /reset
    
  2. Restart the pc.

To view Driver Verifier statistics

  • In Driver Verifier Supervisor, choose Show details about the at present verified drivers, after which choose Subsequent. Persevering with to pick Subsequent shows further info.

    or

    Enter the next command at a command immediate:

    verifier /question
    

To view Driver Verifier settings

  • In Driver Verifier Supervisor, choose Show current settings, after which choose Subsequent.

    or

    Enter the next command at a command immediate:

    verifier /querysettings
    

Find out how to debug Driver Verifier violations

To get probably the most profit from Driver Verifier, it’s best to use a kernel debugger and join it to the check laptop. For an outline of debugging instruments for Home windows, see Debugging Instruments for Home windows (WinDbg, KD, CDB, NTSD).

If Driver Verifier detects a violation, it generates a bug verify to cease the pc. That is to offer you probably the most info potential for debugging the difficulty. When you could have a kernel debugger related to a check laptop that’s operating Driver Verifier, and Driver Verifier detects a violation, Home windows breaks into the debugger and shows a short description of the error.

All violations detected by Driver Verifier lead to bug checks. Frequent bug verify codes embody the next:

For extra info, see Dealing with a Bug Examine When Driver Verifier is Enabled. For recommendations on debugging Bug Examine 0xC4, see Debugging Bug Examine 0xC4: DRIVER_VERIFIER_DETECTED_VIOLATION.

If you begin a brand new debugging session, use the debugger extension command, !analyze. In kernel mode, the !analyze command shows details about the newest bug verify. To show further info, to assist determine the faulting driver, add possibility -v to the command on the kd> immediate:

kd> !analyze -v

Along with !analyze, you possibly can enter the next debugger extensions on the kd> immediate to view info that’s particular to Driver Verifier:

  • !verifier dumps captured Driver Verifier statistics. Use !verifier -? to show all the obtainable choices.

    kd> !verifier
    
  • !impasse shows info associated to locks or objects tracked by Driver Verifier’s impasse detection function. Use !impasse -? to show all the obtainable choices.

    kd> !impasse
    
  • !iovirp [address] shows info associated to an IRP tracked by I/O Verifier. For instance:

    kd> !iovirp 947cef68
    
  • !ruleinfo [RuleID] shows info associated to the DDI compliance checking rule that was violated. (RuleID is all the time the primary argument to the bug verify.) All rule IDs from DDI compliance checking are within the type 0x200nn. For instance:

    kd> !ruleinfo 0x20005
    

Driver Verifier: What’s New

Driver Verifier Choices

Driver Verifier Command Syntax

Utilizing Driver Verifier

Controlling Driver Verifier

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