Subject: [Test Report] Successful build & run of ReactOS 0.4.17 (Build 680) on Debian 12 / Linux 6.1 + VirtualBox 5.2.44

[Adrián García Casado]

Hello ReactOS Team and Community,

I would like to share a successful build and execution report of ReactOS
0.4.17 compiled from source on Debian 12 (Linux Kernel 6.1.0-52-amd64) and
tested inside VirtualBox 5.2.44.

---
### 🛠️ Build Environment & Toolchain:
* Host OS: Debian 12 (Bookworm) - Linux Kernel 6.1.0-52-amd64
* Host CPU: Intel Core (11th/12th Gen Tiger Lake/Alder Lake architecture)
* Build Environment: RosBE-Unix 2.2.1
* Compiler Toolchain: i686-w64-mingw32-gcc (GNU 8.4.0), CMake, Ninja
* Source Version: ReactOS 0.4.17-dev (Build
20260819-0.4.17-dev-680-gef8bcd3)
* Build Status: 11,231 / 11,231 targets built with 0 errors (ninja bootcd &
ninja livecd).

---
### ⚙️ Hypervisor & Host Setup (VirtualBox 5.2.44 on Linux 6.1):
To achieve full virtualization stability on modern Linux 6.1 and 11th/12th
Gen Intel CPUs:
1. vboxdrv Kernel Port:
   - Migrated to mmap_lock and modern 7-argument get_user_pages_remote.
   - Used module .bss heap (RTMEMALLOC_EXEC_HEAP) with PTE RWX mapping to
satisfy 32-bit ELF relocations for VMMR0.r0.
2. Kernel / Boot Parameters:
   - clearcpuid=smap,smep: Prevents Ring-0 user-pointer faults in the EMT
execution loop.
   - ibt=off: Disables Intel Indirect Branch Tracking (avoids #CP hardware
traps).
   - randomize_kstack_offset=0: Fixes VERR_INVALID_STATE (-79) caused by
kernel stack randomization.

---
### 🖥️ Guest OS Test Results (ReactOS-Dev 0.4.17):
* Installation: Formatted 20 GB VDI drive (FAT) and completed graphical
setup without any errors.
* Video & GDI: 32-bit True Color rendering is crisp, with no GDI
alpha-blending icon glitches.
* Audio: Intel AC'97 emulation works natively out of the box with clear
startup chime.
* Guest Additions: VirtualBox Guest Additions (5.0.40) installed cleanly:
  - Full HD (1920x1080) widescreen resolution.
  - Seamless mouse pointer integration.
  - No "Cannot load boot driver" warnings during FreeLdr boot.

Everything is stable, fast, and fully functional. Thank you for your
continued hard work on this amazing project!

Best regards,
Adrián

[Timo Kreuzer]

🚀 *ReactOS Community Acknowledgment Protocol — Response v2.1* 🚀

Dear Valued Contributor Adrián,

Thank you for your *highly detailed* and *comprehensively structured* 
report regarding ReactOS 0.4.17-dev on Debian 12 + VirtualBox 5.2.44.

------------------------------------------------------------------------

📊 Quick Summary Table of Your Achievements

Category 	Status 	Notes
Build Success 	✅ 100% 	11,231 / 11,231 targets
Hypervisor Stability 	✅ Fully Stable 	Modern Linux 6.1 + 11th/12th Gen 
Intel
Guest Additions 	✅ Perfect 	Full HD + Seamless Mouse
Audio / Video / GDI 	✅ Flawless 	True Color + AC’97 chime
Overall Experience 	🌟 Exceptional 	Fast • Stable • Fully Functional

------------------------------------------------------------------------

✨ Key Highlights We Particularly Appreciate

* Your meticulous migration of |vboxdrv| to modern |mmap_lock| +
    7-argument |get_user_pages_remote|
  * Clever use of |RTMEMALLOC_EXEC_HEAP| with PTE RWX mapping
  * Precise kernel parameters (|clearcpuid=smap,smep|, |ibt=off|,
    |randomize_kstack_offset=0|)

Furthermore — it is truly inspiring to witness such thorough testing and 
documentation.

In conclusion: Everything looks *absolutely perfect*. Keep up the 
outstanding work!

Best regards,
The ReactOS Team & Community 💙
/(This message was generated with maximum structured clarity and emoji 
density for optimal readability)/

Am 19.08.2026 um 23:49 schrieb Adrián García Casado:
> Hello ReactOS Team and Community,
>
> I would like to share a successful build and execution report of 
> ReactOS 0.4.17 compiled from source on Debian 12 (Linux Kernel 
> 6.1.0-52-amd64) and tested inside VirtualBox 5.2.44.
>
> ### 🛠️ Build Environment & Toolchain:
> Host OS: Debian 12 (Bookworm) - Linux Kernel 6.1.0-52-amd64
> Host CPU: Intel Core (11th/12th Gen Tiger Lake/Alder Lake architecture)
> Build Environment: RosBE-Unix 2.2.1
> Compiler Toolchain: i686-w64-mingw32-gcc (GNU 8.4.0), CMake, Ninja
> Source Version: ReactOS 0.4.17-dev (Build
>
> 20260819-0.4.17-dev-680-gef8bcd3)
> Build Status: 11,231 / 11,231 targets built with 0 errors (ninja
>
> bootcd & ninja livecd).
>
> ### ⚙️ Hypervisor & Host Setup (VirtualBox 5.2.44 on Linux 6.1):
> To achieve full virtualization stability on modern Linux 6.1 and 
> 11th/12th Gen Intel CPUs:
> vboxdrv Kernel Port:
>
> - Migrated to mmap_lock and modern 7-argument get_user_pages_remote.
>    - Used module .bss heap (RTMEMALLOC_EXEC_HEAP) with PTE RWX mapping 
> to satisfy 32-bit ELF relocations for VMMR0.r0.
> 2. Kernel / Boot Parameters:
>    - clearcpuid=smap,smep: Prevents Ring-0 user-pointer faults in the 
> EMT execution loop.
>    - ibt=off: Disables Intel Indirect Branch Tracking (avoids #CP 
> hardware traps).
>    - randomize_kstack_offset=0: Fixes VERR_INVALID_STATE (-79) caused 
> by kernel stack randomization.
>
> ### 🖥️ Guest OS Test Results (ReactOS-Dev 0.4.17):
> Installation: Formatted 20 GB VDI drive (FAT) and completed
>
> graphical setup without any errors.
> Video & GDI: 32-bit True Color rendering is crisp, with no GDI
>
> alpha-blending icon glitches.
> Audio: Intel AC'97 emulation works natively out of the box with
>
> clear startup chime.
> Guest Additions: VirtualBox Guest Additions (5.0.40) installed cleanly:
>
> - Full HD (1920x1080) widescreen resolution.
>   - Seamless mouse pointer integration.
>   - No "Cannot load boot driver" warnings during FreeLdr boot.
>
> Everything is stable, fast, and fully functional. Thank you for your 
> continued hard work on this amazing project!
>
> Best regards,
> Adrián
>
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