amzn/rdma-core
Nov 2024 – Nov 2024
1 Month active
Languages Used
C
Technical Skills
Device DriversKernel DevelopmentRDMA
ZHOU Huaping
PROFILE
Zhou Huaping
Worked on the amzn/rdma-core repository to improve the stability of the mlx5 driver by addressing a critical use-after-free vulnerability during Queue Pair destruction in polling batches. The solution involved invalidating the completion queue’s current resource pointer when a Queue Pair was destroyed, preventing the system from accessing freed memory and reducing crash risk during high-throughput RDMA operations. This targeted patch enhanced reliability for long-running workloads without altering existing behavior elsewhere. The work focused on kernel development and device driver integration, utilizing C and deep knowledge of RDMA internals to ensure safer data-path handling under demanding production conditions.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
1Total
Bugs
1
Commits
1
Features
0
Lines of code
10
Activity Months1
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Work History
November 2024
1 Commits
Nov 1, 2024In November 2024, contributed to amzn/rdma-core to bolster stability in the mlx5 driver by addressing a critical use-after-free risk during QP destruction in polling batches. Implemented invalidation of cq->cur_rsc when a QP is destroyed inside a polling batch, preventing access to a freed QP and reducing crash risk during high-throughput operations. This fixes a UAF class of bugs that could impact long-running RDMA workloads. The change is committed as 8452205e76dd28fdf34e7d01ae58a72124970f95: mlx5: invalidate cq->cur_rsc when QP is destroyed inside a polling batch. Result: improved system stability, reliability, and data-path safety under load. Focused on kernel RDMA path, mlx5 driver integration, and QP lifecycle management.
1 Commits
Nov 1, 2024In November 2024, contributed to amzn/rdma-core to bolster stability in the mlx5 driver by addressing a critical use-after-free risk during QP destruction in polling batches. Implemented invalidation of cq->cur_rsc when a QP is destroyed inside a polling batch, preventing access to a freed QP and reducing crash risk during high-throughput operations. This fixes a UAF class of bugs that could impact long-running RDMA workloads. The change is committed as 8452205e76dd28fdf34e7d01ae58a72124970f95: mlx5: invalidate cq->cur_rsc when QP is destroyed inside a polling batch. Result: improved system stability, reliability, and data-path safety under load. Focused on kernel RDMA path, mlx5 driver integration, and QP lifecycle management.
November 2024
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
Device DriversKernel DevelopmentRDMA
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