google/syzkaller
Jan 2025 – Jun 2025
5 Months active
Languages Used
CAssemblyGo
Technical Skills
ARM ArchitectureARM64 ArchitectureEmulationFuzzingKVMKernel Development
Marios Pomonis
PROFILE
Marios Pomonis
Over five months, Pomonis enhanced the google/syzkaller repository by building and extending cross-architecture fuzzing and virtualization support. He implemented ARM64 subsystem improvements, expanded KVM and QEMU-based testing, and introduced CPUID instruction emulation for AMD64, enabling more accurate kernel bug detection. His work included integrating SEV/SEV-SNP memory encryption testing, refactoring architecture-specific code for maintainability, and updating kernel API constants to align with upstream changes. Using C, Go, and ARM64 assembly, Pomonis focused on low-level system programming, kernel development, and virtualization, delivering robust, extensible features that improved test coverage, platform support, and the reliability of automated fuzzing workflows.
Overall Statistics
Feature vs Bugs
86%Features
Repository Contributions
11Total
Bugs
1
Commits
11
Features
6
Lines of code
3,575
Activity Months5
Your Network
4220 people
Work History
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for google/syzkaller. Delivered integration work enabling KVM SEV/SEV-SNP memory encryption testing within syzkaller by adding KVM_MEMORY_ENCRYPT_OP support to Linux syscalls. The change introduces new resources, ioctls, and data structures to enable automated testing and fuzzing of AMD SEV/SEV-SNP memory encryption in KVM.
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for google/syzkaller. Delivered integration work enabling KVM SEV/SEV-SNP memory encryption testing within syzkaller by adding KVM_MEMORY_ENCRYPT_OP support to Linux syscalls. The change introduces new resources, ioctls, and data structures to enable automated testing and fuzzing of AMD SEV/SEV-SNP memory encryption in KVM.
June 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for google/syzkaller focusing on CPUID support in SYZOS for AMD64. Delivered CPUID instruction support in the SYZOS environment, including a new CPUID API, a guest function to handle CPUID, and automated tests. The work strengthens AMD64 fuzzing fidelity and improves kernel bug detection by enabling accurate CPU feature emulation within the SYZOS/KVM path.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for google/syzkaller focusing on CPUID support in SYZOS for AMD64. Delivered CPUID instruction support in the SYZOS environment, including a new CPUID API, a guest function to handle CPUID, and automated tests. The work strengthens AMD64 fuzzing fidelity and improves kernel bug detection by enabling accurate CPU feature emulation within the SYZOS/KVM path.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for google/syzkaller: Delivered expanded fuzzing capabilities and kernel-API hygiene that enhance coverage and maintainability. Key features include SYZOS fuzzer integration for x86-64 with a KVM-based VM workflow, including VCPU setup and guest code execution, along with ARM64 fuzzer updates and initial i386 support. Also performed kernel-API maintenance by removing deprecated constants and updating related interface values. These changes broaden platform coverage, improve fuzzing throughput, and reduce maintenance risk.
2 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for google/syzkaller: Delivered expanded fuzzing capabilities and kernel-API hygiene that enhance coverage and maintainability. Key features include SYZOS fuzzer integration for x86-64 with a KVM-based VM workflow, including VCPU setup and guest code execution, along with ARM64 fuzzer updates and initial i386 support. Also performed kernel-API maintenance by removing deprecated constants and updating related interface values. These changes broaden platform coverage, improve fuzzing throughput, and reduce maintenance risk.
April 2025
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025: Delivered foundational KVM and architecture groundwork for google/syzkaller, focusing on x86/x64 support and maintainability. Implemented a critical sign-extension bug fix in KVM setup, refactored KVM bit manipulation into a generic header, and reorganized architecture-specific ioctl descriptions and files. Established X86-64 SYZOS groundwork and updated ARM64 checks to align with the new structure. These changes lay a solid, extensible base for cross-architecture fuzzing and faster onboarding of future architectures.
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025: Delivered foundational KVM and architecture groundwork for google/syzkaller, focusing on x86/x64 support and maintainability. Implemented a critical sign-extension bug fix in KVM setup, refactored KVM bit manipulation into a generic header, and reorganized architecture-specific ioctl descriptions and files. Established X86-64 SYZOS groundwork and updated ARM64 checks to align with the new structure. These changes lay a solid, extensible base for cross-architecture fuzzing and faster onboarding of future architectures.
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025: Delivered ARM64 subsystem enhancements and expanded virtualization test coverage in google/syzkaller, strengthening hardware-accurate fuzzing and regression detection for ARM64 platforms.
4 Commits • 2 Features
Jan 1, 2025January 2025: Delivered ARM64 subsystem enhancements and expanded virtualization test coverage in google/syzkaller, strengthening hardware-accurate fuzzing and regression detection for ARM64 platforms.
January 2025
Activity
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Quality Metrics
Correctness96.4%
Maintainability94.6%
Architecture95.4%
Performance87.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyCGo
Technical Skills
ARM ArchitectureARM64 ArchitectureAssemblyCCode RefactoringConstant ManagementCross-Architecture DevelopmentEmulationFuzzingGoKVMKernel DevelopmentLow-Level ProgrammingOperating System DevelopmentSecurity
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