DynamoRIO/drmemory

Add in-place fuzzing mutation

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#1,801 opened on Oct 26, 2015

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Component-DrFuzzType-Featurehelp wanted

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Description

For some cases, the fuzzing mutation input might large, and thus repeatedly copy is expensive. If we know the input buffer will not be changed, we should be able to perform in-place mutation to avoid un-necessary copy and have better performance.

For in-place mutation, we should be able to revert the previous mutation, and then apply the current mutation.

Contributor guide

Research direction
Implement in place mutation by reusing a buffer and reverting to original state between mutations.
Tech stack
c
Domain
performancesecurity
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
C
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50