核心转储文件分析 [英] Core dump file analysis

问题描述

在分析核心转储文件时，我需要检查哪些内容？
请从头开始告诉我。

解决方案

您只需要一个二进制文件（带有调试符号）生成核心的那个。然后你可以运行 gdb path / to / the / binary path / to / the / core 来调试它。

当它启动时，您可以使用 bt （用于回溯）从崩溃时间获取堆栈跟踪。在回溯中，每个函数调用都被赋予一个数字。您可以使用 frame number （用堆栈跟踪中相应的数字替换 number ）来选择特定的堆栈帧。然后可以使用 list 查看该函数的代码，并使用 info locals 查看本地变量。您也可以使用 print name_of_variable （用变量名称替换name_of_variable）以查看其值。

在GDB中输入 help 会给你一个提示，让你看到更多的命令。

What are all the things I will need to check while analyzing core dump file? Please tell me from scratch.

解决方案

You just need a binary (with debugging symbols included) that is identical to the one that generated the core. Then you can run gdb path/to/the/binary path/to/the/core to debug it.

When it starts up, you can use bt (for backtrace) to get a stack trace from the time of the crash. In the backtrace, each function invocation is given a number. You can use frame number (replacing number with the corresponding number in the stack trace) to select a particular stack frame. You can then use list to see code around that function, and info locals to see the local variables. You can also use print name_of_variable (replacing "name_of_variable" with a variable name) to see its value.

Typing help within GDB will give you a prompt that will let you see additional commands.

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