Congyu Liu

LWSN 2161

305 N. University Street

West Lafayette, IN 47906

I am a Ph.D. student at Department of Computer Science, Purdue University, advised by Pedro Fonseca since 2021. I received my B.S. in Computer Science from Huazhong University of Science and Technology. I was an intern at Microsft Research Asia and Microsoft Research Redmond.

My current research focues on system reliability and security.

Publications

Eurosys ’25

Pegasus: Transparent and Unified Kernel-Bypass Networking for Fast Local and Remote Communication

Dinglan Peng, Congyu Liu, Tapti Palit, Anjo Vahldiek-Oberwagner, Mona Vij, and Pedro Fonseca

In Proceedings of the Twentieth European Conference on Computer Systems, 2025

Bib

@inproceedings{pegasus,
  author = {Peng, Dinglan and Liu, Congyu and Palit, Tapti and Vahldiek-Oberwagner, Anjo and Vij, Mona and Fonseca, Pedro},
  title = {Pegasus: Transparent and Unified Kernel-Bypass Networking for Fast Local and Remote Communication},
  year = {2025},
  booktitle = {Proceedings of the Twentieth European Conference on Computer Systems},
  series = {EuroSys '25}
}

OOPSLA ’24

ParDiff: Practical Static Differential Analysis of Network Protocol Parsers

Mingwei Zheng, Qingkai Shi, Xuwei Liu, Xiangzhe Xu, Le Yu, Congyu Liu, Guannan Wei, and Xiangyu Zhang

Proceedings of the ACM on Programming Languages, 2024

Bib URL

@article{pardiff,
  author = {Zheng, Mingwei and Shi, Qingkai and Liu, Xuwei and Xu, Xiangzhe and Yu, Le and Liu, Congyu and Wei, Guannan and Zhang, Xiangyu},
  title = {ParDiff: Practical Static Differential Analysis of Network Protocol Parsers},
  year = {2024},
  issue_date = {April 2024},
  publisher = {Association for Computing Machinery},
  journal = {Proceedings of the ACM on Programming Languages},
  address = {New York, NY, USA},
  volume = {8},
  number = {OOPSLA1},
  url = {https://doi.org/10.1145/3649854},
  doi = {10.1145/3649854},
  articleno = {137},
  numpages = {27},
  keywords = {Network protocol, differential analysis, protocol format specification, static program analysis}
}

ASPLOS ’23

Veil: A Protected Services Framework for Confidential Virtual Machines

Adil Ahmad, Botong Ou, Congyu Liu, Xiaokuan Zhang, and Pedro Fonseca

In Proceedings of the 28th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, Volume 4, May 2023

Bib URL

@inproceedings{veil,
  author = {Ahmad, Adil and Ou, Botong and Liu, Congyu and Zhang, Xiaokuan and Fonseca, Pedro},
  booktitle = {Proceedings of the 28th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, Volume 4},
  title = {Veil: A Protected Services Framework for Confidential Virtual Machines},
  doi = {10.1145/3623278.3624763},
  url = {https://dl.acm.org/doi/abs/10.1145/3623278.3624763},
  month = may,
  year = {2023}
}

S&P ’23

uSWITCH: Fast Kernel Context Isolation with Implicit Context Switches

Dinglan Peng, Congyu Liu, Tapti Palit, Pedro Fonseca, Anjo Vahldiek-Oberwagner, and Mona Vij

In 2023 IEEE Symposium on Security and Privacy, May 2023

Bib URL PDF

@inproceedings{uswitch,
  author = {Peng, Dinglan and Liu, Congyu and Palit, Tapti and Fonseca, Pedro and Vahldiek-Oberwagner, Anjo and Vij, Mona},
  booktitle = {2023 IEEE Symposium on Security and Privacy},
  title = {uSWITCH: Fast Kernel Context Isolation with Implicit Context Switches},
  location = {San Francisco, CA},
  year = {2023},
  pages = {1506-1523},
  doi = {10.1109/SP46215.2023.00086},
  url = {https://doi.ieeecomputersociety.org/10.1109/SP46215.2023.00086},
  publisher = {IEEE Computer Society},
  address = {Los Alamitos, CA, USA},
  month = may
}

ASPLOS ’23 Atifact Available

KIT: Testing OS-Level Virtualization for Functional Interference Bugs

Congyu Liu, Sishuai Gong, and Pedro Fonseca

In Proceedings of the 28th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, Volume 2, May 2023

Bib URL PDF Lightning Talk Code Slides

@inproceedings{10.1145/3575693.3575731,
  author = {Liu, Congyu and Gong, Sishuai and Fonseca, Pedro},
  title = {KIT: Testing OS-Level Virtualization for Functional Interference Bugs},
  year = {2023},
  isbn = {9781450399166},
  publisher = {Association for Computing Machinery},
  address = {New York, NY, USA},
  url = {https://doi.org/10.1145/3575693.3575731},
  doi = {10.1145/3575693.3575731},
  booktitle = {Proceedings of the 28th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, Volume 2},
  pages = {427–441},
  numpages = {15},
  keywords = {OS-level virtualization, software testing},
  location = {Vancouver, BC, Canada},
  series = {ASPLOS 2023}
}