[GSD-14035] [BMG/B50] VRAM/RAM leak in the "clCreateFromD3D11Texture2DKHR + clReleaseMemObject" loop (Windows-only)

The reproducer is the attached repro.cpp, which loops clCreateFromD3D11Texture2DKHR and clReleaseMemObject on a 3840x2160 NV12 D3D11 texture; run ./repro.exe 100000 60 and watch VRAM and RAM in Task Manager. Done means memory returns to baseline after release without the process exiting, which the report says does not happen today. Tracing the driver-side allocation and release path for D3D11 shared surfaces needs deep knowledge of the runtime, so this is not a good first issue.

Pre-submission Checklist

• I am using the latest GPU driver version (download center)
• I have searched for similar issues and found none

GPU Hardware

Intel(R) Arc(TM) Pro B50 Graphics

GPU Detailed Information

PS C:\WINDOWS\system32> Get-WmiObject Win32_VideoController | Where-Object {$_.Name -like "*Intel*"} | Select-Object Name, DriverVersion, DriverDate, VideoProcessor, AdapterRAM, PNPDeviceID | Format-List


Name           : Intel(R) Arc(TM) Pro B50 Graphics
DriverVersion  : 32.0.101.9150
DriverDate     : 20261008000000.000000-000
VideoProcessor : Intel(R) Arc(TM) Pro B50 Graphics Family
AdapterRAM     : 4293918720
PNPDeviceID    : PCI\VEN_8086&DEV_E212&SUBSYS_25221EF7&REV_00\6&186825C4&0&00080009

Driver Installation Details

• Installation methon: Manual download from Intel Download Center
• Downloaded from: https://www.intel.com/content/www/us/en/download/785597/intel-arc-graphics-windows.html

Windows Build Information

PS C:\WINDOWS\system32> Get-ComputerInfo | Select-Object WindowsProductName, WindowsVersion, OsHardwareAbstractionLayer | Format-List


WindowsProductName         : Windows 10 Pro for Workstations
WindowsVersion             : 2009
OsHardwareAbstractionLayer : 10.0.19041.6456

Actual Behavior

VRAM/RAM leak in the clCreateFromD3D11Texture2DKHR + clReleaseMemObject loop.

Expected Behavior

No VRAM/RAM leak in the clCreateFromD3D11Texture2DKHR + clReleaseMemObject loop.

Reproduction Rate

Always reproduces - 100%

Steps to Reproduce

1. Install driver version 32.0.101.9150
2. Launch the command-line application ./repro.exe 100000 60
3. Observe the GPU VRAM and RAM usage in Task Manager or similar monitoring tools

Is this a regression?

• Yes, this is a regression - functionality that previously worked is now broken

Last Known Working Driver Version

No response

First Known Failing Driver Version

No response

API Call Logs

This issue is a memory leak; it does not involve a crash.

Windows Event Viewer Logs

This issue is a memory leak; it does not involve a crash.

Crash Dumps / Minidumps

This issue is a memory leak; it does not involve a crash.

Source Code / Reproducer

• Minimal reproducer exe binary: repro.zip
• Minimal reproducer cpp source code: repro.cpp.txt

Command Line / Application Details

./repro.exe 100000 60

========================================
D3D11 / OpenCL Interop Leak Reproducer
========================================
Iterations: 100000
Observation period: 60 seconds

D3D11 feature level: 0xb000
Created NV12 texture: 3840x2160
OpenCL device: Intel(R) Arc(TM) Pro B50 Graphics

Starting create/release test...
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========================================
Test finished: 100000 / 100000 iterations.
All create/release operations stopped.
OpenCL Context and D3D11 resources remain alive.
Observation period: 60 seconds.
Observe GPU memory usage now...
========================================
Remaining: 60 seconds
Remaining: 50 seconds
Remaining: 40 seconds
Remaining: 30 seconds
Remaining: 20 seconds
Remaining: 10 seconds

Observation finished. Releasing resources...
All resources released.
Exiting.

oneAPI Version (if applicable)

The issue is OpenCL only.

System Configuration

PS C:\WINDOWS\system32> Get-ComputerInfo | Select-Object CsProcessors, CsTotalPhysicalMemory, CsManufacturer, CsModel | Format-List


CsProcessors          : {AMD Ryzen 7 5700G with Radeon Graphics         }
CsTotalPhysicalMemory : 33686118400
CsManufacturer        : To Be Filled By O.E.M.
CsModel               : To Be Filled By O.E.M.

Screenshots / Video

Leaked VRAM/RAM after running ./repro.exe 100000 60:

Intel System Support Utility Report

igcit_ssu.txt

Additional Notes

I initially thought this was some kind of caching, but even with extended wait times after create/release loop, VRAM/RAM usage doesn't decrease automatically unless the repro.exe program exits.