在Linux上从核心转储中查找崩溃的汇编指令

概述如果我将崩溃程序和核心转储加载到gdb中,它会向我显示堆栈跟踪和崩溃点,如下所示. Core was generated by `./cut --output-d=: -b1,1234567890- /dev/fd/63'.Program terminated with signal SIGSEGV, Segmentation fault.#0 is_printable_field (i=1 如果我将崩溃程序和核心转储加载到gdb中,它会向我显示堆栈跟踪和崩溃点,如下所示.

Core was generated by `./cut --output-d=: -b1,1234567890- /dev/fd/63'.Program terminated with signal SIGSEGV,Segmentation fault.#0  is_printable_fIEld (i=1234567890) at src/cut.c:266266   return (printable_fIEld[n] >> (i % CHAR_BIT)) & 1;(gdb) bt#0  is_printable_fIEld (i=1234567890) at src/cut.c:266#1  set_fIElds (fIEldstr=0x7ffccb0561c4 "") at src/cut.c:533#2  main (argc=4,argv=0x7ffccb055cf8) at src/cut.c:865

有没有办法知道导致段错误的确切汇编指令？

解决方法 一种可能性是设置：

(gdb)layout asm

当GDB停止时,指向相应的装配线.

例：

│0x7ffff7aa441d <strtok+45>      je     0x7ffff7aa44d6 <strtok+230>                                                                                       │   │0x7ffff7aa4423 <strtok+51>      mov    %rsi,%rax                                                                                                         │  >│0x7ffff7aa4426 <strtok+54>      mov    (%rax),%cl                                                                                                        │   │0x7ffff7aa4428 <strtok+56>      test   %cl,%cl                                                                                                           │   │0x7ffff7aa442a <strtok+58>      je     0x7ffff7aa4454 <strtok+100>Program received signal SIGSEGV,Segmentation fault.0x00007ffff7aa4426 in strtok () from /lib64/libc.so.6(gdb)

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