DynamoRIO/drmemory

add a light mode feature to be agnostic of syscall #'s

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#1,849 opened on Jan 20, 2016

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Component-LightModeHotlist-ReleaseMaintainabilityType-Featurehelp wanted

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Description

The goal is to operate on new Windows versions that have different syscalls but DR still works (after https://github.com/DynamoRIO/dynamorio/issues/1598). We would add a feature that turns off syscall parameter checking and tries to only care about the bare minimum syscalls needed to track memory allocation: and since those are all in ntoskrnl and are exported, we should be able to read them dynamically from the wrappers (modulo hooks).

Xref #1848, #1826.

Contributor guide

Research direction
Investigate how to dynamically read syscall numbers from ntoskrnl exports and identify which syscalls are essential for memory allocation tracking, then design a light mode that skips parameter checking.
Tech stack
c
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 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
CWindows internalssyscall knowledge
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20