【嵌入式Linux下通过IDA+gdb调试死机问题】

背景

经过去符号、混淆、重定位等保密操作的应用程序，崩溃时产生的core文件往往无法使用gdb调试来找到详细的错误信息（显示的都是in ??()）。但通过IDA逆向+GDB查看寄存器相配合，也是可以自己回溯出错误信息的。

环境及工具

IDA：自行百度下载
GDB：GNU gdb (Ubuntu 9.2-0ubuntu1~20.04.2) 9.2
板卡：rk3588

GDB调试core文件

rook@rk3588:~/crash# gdb ./Backend1 Backend_core-2024-10-12
GNU gdb (Ubuntu 9.2-0ubuntu1~20.04.2) 9.2
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Type "show copying" and "show warranty" for details.
This GDB was configured as "aarch64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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    <http://www.gnu.org/software/gdb/documentation/>.

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Reading symbols from ./Backend1...
(No debugging symbols found in ./Backend1)

warning: core file may not match specified executable file.
[New LWP 1592]
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