radareorg/radare2

Symbols in /usr/lib/debug aren't automatically loaded

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#8,666 建立於 2017年10月9日

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RBindebug-infogood first issuehigh-priority

描述

See https://github.com/radare/radare2/issues/4888 for context.

Several linux systems split debug symbols from executables and installs them under /usr/lib/debug/ e.g. /usr/path/to/bin/cmd has symbols at /usr/lib/debug/usr/path/to/bin/cmd. radare2 1.6.0 doesn't appear to load these symbols. The symbols for calls are missing, attemping to seek, s, to a function fails, etc. On the other hand, gdb automatically loads the symbols from these files.

貢獻者指南

技術棧
c
領域
clisecurity
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Understanding of ELF binary formatFamiliarity with radare2's source codeKnowledge of Linux debug symbol paths
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
Examine the issue #4888 referenced in the description for prior context. Review radare2's symbol loading code, likely in libr/bin or libr/core, to understand how debug symbols are currently searched. Compare with gdb's behavior to determine the expected file path pattern. Implement a function to automatically search for debug symbols in /usr/lib/debug/ based on the executable's path. Test with a Linux system that has split debug symbols.