Fuzz Testing Module With Packet Analyzer For DUT Failure Handling
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Solution Overview
Problem
Conventional testing platforms face challenges in accurately identifying and managing fuzzed packets, reproducing test events, and efficiently handling device under test (DUT) failures during fuzz testing, leading to resource wastage and prolonged testing times.
Innovation Solution
A computing platform with a fuzz testing module generates test messages with fuzzed data and separate indication messages, includes a packet analyzer to identify fuzzed data, and distributes test portions across multiple resources to handle failures and enable efficient replay of test events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional testing platforms send fuzzed data to DUT without separate identification, then the testing process is simpler, but the ability to identify and analyze specific fuzzed packets is lost
Solution Approach 1:
The patent introduces an intermediary identification mechanism (indication message or identification field) that mediates between the fuzz testing module and the packet analyzer. This intermediary carries identification information that links fuzzed packets to their source, enabling precise tracking without fundamentally altering the core fuzzing functionality.
Solution Approach 2:
The patent segments the identification function from the data transmission function by using separate indication messages or dedicated identification fields. This segmentation allows the packet analyzer to independently identify and track fuzzed packets without processing the entire data stream, improving identification precision while maintaining manageable system complexity.
2Productivity
If fuzz testing continues after DUT failure, then testing productivity is improved, but system reliability may be compromised
Solution Approach 1:
The patent implements a feedback mechanism where the packet analyzer monitors DUT responses to fuzzed packets and provides feedback to the fuzz testing module. This feedback loop enables the system to detect DUT failures, reproduce specific test events, and determine whether to continue or restart testing, balancing productivity gains with reliability maintenance.
Solution Approach 2:
The patent performs preliminary actions by recording and storing test event information before DUT failures occur. This preliminary recording enables the system to reproduce specific test events after failures, ensuring that productivity improvements do not compromise the ability to accurately identify and analyze failure causes.
3Loss of time
If multiple resources are used for fuzz testing, then testing time is reduced, but resource management complexity increases
Solution Approach 1:
The patent segments the fuzz testing workload across multiple resources (test ports, processors) and introduces a resource management module that independently coordinates these segmented operations. This segmentation enables parallel testing to reduce overall testing duration while the centralized resource management module handles the coordination complexity.
Solution Approach 2:
The resource management module is designed with multi-functionality to handle various resource types (test ports, processors, memory) through unified management mechanisms. This universal approach reduces the complexity increase that would result from implementing separate management systems for each resource type.
Data Source
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AI summary
Methods, systems, and computer readable media for providing fuzz testing functionality are disclosed. According to one method, the method includes at a fuzz testing module (FTM), generating a plurality of test messages, including a test message including fuzzed data, generating fuzzed message identification information, and transmitting the test message and the fuzzed message identification information to a device under test (DUT). The method also includes at a packet analyzer located between the FTM and the DUT, receiving the plurality of test messages and the fuzzed message identification information, and identifying the test message including the fuzzed data using the fuzzed message identification information.