Re: [xenvif PATCH 3/3] Enable KASAN build support

["Tu Dinh" <ngoc-tu.dinh@xxxxxxxxxx>]

On 17/11/2025 13:14, Tu Dinh wrote:
> On 17/11/2025 09:36, Owen Smith wrote:
>> KASAN (Kernel Address Sanitizer)
>> (see 
>> https://learn.microsoft.com/en-us/windows-hardware/drivers/devtest/kasan)
>> builds can be enabled when using the WDK 10.0.26100.2161 or later, and can be
>> used on specially prepared Windows 11 24H2 / Server 2025, or later, OSs.
>>
>> KASAN enabled drivers should not generally deployed, as the OS needs to be
>> enabled, but these drivers can help track down illegal memory accesses and
>> similar issues.
>>
>> Signed-off-by: david ambu <david.preetham@xxxxxxxxx>
> 
> Installing Xenvif + Xennet in KASAN + Verifier mode causes Windows
> Server 2025 26100.7171 to hang upon a BSOD (e.g. when triggered by
> NotMyFault) instead of successfully rebooting, although minidump is
> still generated. I haven't verified this behavior without
> KASAN/Verifier. Other drivers (including Xenvbd) worked fine.
> 

Never mind, I think it was KDNET interfering.

>> ---
>>    build.ps1   |  6 ++++--
>>    msbuild.ps1 | 11 ++++++++---
>>    2 files changed, 12 insertions(+), 5 deletions(-)
>>
>> diff --git a/build.ps1 b/build.ps1
>> index 42bbdde..1ec30ee 100644
>> --- a/build.ps1
>> +++ b/build.ps1
>> @@ -9,7 +9,8 @@ param(
>>      [string]$SignMode = "TestSign",
>>      [switch]$CodeQL,
>>      [switch]$Sdv,
>> -    [switch]$CodeAnalysis
>> +    [switch]$CodeAnalysis,
>> +    [switch]$Kasan
>>    )
>>    
>>    #
>> @@ -32,7 +33,8 @@ Function Build {
>>              Arch = $Arch;
>>              Type = $Type;
>>              SignMode = $SignMode;
>> -            CodeAnalysis = $CodeAnalysis
>> +            CodeAnalysis = $CodeAnalysis;
>> +            Kasan = $Kasan
>>              }
>>      & ".\msbuild.ps1" @params
>>      if ($LASTEXITCODE -ne 0) {
>> diff --git a/msbuild.ps1 b/msbuild.ps1
>> index 21548a0..707ec05 100644
>> --- a/msbuild.ps1
>> +++ b/msbuild.ps1
>> @@ -9,7 +9,8 @@ param(
>>      [Parameter(Mandatory = $true)]
>>      [string]$Type,
>>      [string]$SignMode = "TestSign",
>> -    [switch]$CodeAnalysis
>> +    [switch]$CodeAnalysis,
>> +    [switch]$Kasan
>>    )
>>    
>>    #
>> @@ -30,7 +31,8 @@ Function Run-MSBuild {
>>              [string]$Platform,
>>              [string]$Target = "Build",
>>              [string]$Inputs = "",
>> -            [switch]$CodeAnalysis
>> +            [switch]$CodeAnalysis,
>> +            [switch]$Kasan
>>      )
>>    
>>      $c = "msbuild.exe"
>> @@ -46,6 +48,9 @@ Function Run-MSBuild {
>>              $c += "/p:RunCodeAnalysis=true "
>>              $c += "/p:EnablePREFast=true "
>>      }
>> +    if ($Kasan) {
>> +            $c += "/p:EnableKASAN=true "
>> +    }
>>    
>>      $c += Join-Path -Path $SolutionPath -ChildPath $Name
>>    
>> @@ -186,7 +191,7 @@ if (-Not (Test-Path -Path $archivepath)) {
>>    }
>>    
>>    if (($Type -eq "free") -or ($Type -eq "checked")) {
>> -    Run-MSBuild $solutionpath $SolutionName $configuration[$Type] 
>> $platform[$Arch] -CodeAnalysis:$CodeAnalysis
>> +    Run-MSBuild $solutionpath $SolutionName $configuration[$Type] 
>> $platform[$Arch] -CodeAnalysis:$CodeAnalysis -Kasan:$Kasan
>>    }
>>    
>>    if ($Type -eq "codeql") {
> 
> 
> 
> --
> Ngoc Tu Dinh | Vates XCP-ng Developer
> 
> XCP-ng & Xen Orchestra - Vates solutions
> 
> web: https://vates.tech
> 
> 



--
Ngoc Tu Dinh | Vates XCP-ng Developer

XCP-ng & Xen Orchestra - Vates solutions

web: https://vates.tech