当我们只有核心文件时如何收集 information/debug

Question

我遇到过只有核心文件（没有可执行文件）的情况。我如何使用 gdb 或任何其他工具的核心文件来收集尽可能多的信息。

gdb core
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"/home/core": not in executable format: File format not recognized

Answer 1

I have came across a situation where we have only the core file (no executable).

你肯定有可执行文件某处？如果可以，请获取它的副本。

How can i use the core file with gdb or any other tool to gather as much information as possible.

除非您将主机配置为转储文件支持的共享映射（参见 coredump_filterdocumentation），否则您根本无法从核心中提取很多有意义的信息。

gdb core

不要那样做。改为这样做：gdb -c core。那么where，info registers，可能还有print $_siginfo可能会提供一些东西，但不会太多。

当我们只有核心文件时如何收集 information/debug

How to gather information/debug when we have only the core file

linux

gdb

core