google/syzkaller
Jan 2025 – Jun 2025
5 Months active
Languages Used
CAssemblyGo
Technical Skills
ARM ArchitectureARM64 ArchitectureEmulationFuzzingKVMKernel Development
Marios Pomonis
PROFILE
Marios Pomonis
Worked on the google/syzkaller repository to expand cross-architecture fuzzing and virtualization support, focusing on low-level system programming in C, Go, and Assembly. Delivered features such as ARM64 system register access, CPUID instruction emulation for AMD64, and KVM SEV/SEV-SNP memory encryption testing, enabling more accurate hardware and kernel validation. Refactored architecture-specific code for maintainability, introduced automated tests, and updated kernel interface constants to align with upstream changes. Integrated new APIs and resources for KVM and virtualization workflows, improving fuzzing coverage and regression detection across ARM64, x86-64, and i386 platforms while maintaining a strong emphasis on security and reliability.
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
4783 peopleSame Organization
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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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