termux/termux-packages

Target does not support core file generation

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#942 opened on Apr 19, 2017

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Description

I'm trying to attach a process and dump memory using gdb in root mode but gcore does not work on x86. gcore does work on my ARM-based phone but it is slow to handle these, emulator is much faster, and I just want to save battery and keep battery last longer.

Steps to reproduce:

  1. Install Memu Lollipop RC5
  2. Install Termux, and launch it
  3. apt update
  4. apt install gdb tsu
  5. su
  6. dumpsys meminfo and find pid of process to attach
  7. quit
  8. tsu
  9. gdb -pid (pid)
  10. gcore (path)

image

Contributor guide

Research direction
Investigate why gcore fails on x86 emulator (Memu Lollipop RC5) by checking kernel configuration, ptrace restrictions, and gdb version. Test on other emulators and real devices to isolate the issue.
Tech stack
c
Domain
toolingbackend
Issue type
Bug
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.
1-3 hours
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
AndroidTermuxgdb
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60