Continuing. [Attaching after Thread 0x7ffff7d88740 (LWP 3524) vfork to child process 3525] [New inferior 2 (process 3525)] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Detaching vfork parent process 3524 after child exec] [Inferior 1 (process 3524) detached] process 3525 is executing new program: /usr/bin/dash Error in re-setting breakpoint 1: No symbol table is loaded. Use the "file" command. Error in re-setting breakpoint 1: No symbol "main" in current context. Error in re-setting breakpoint 1: No symbol "main" in current context. [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Error in re-setting breakpoint 1: No symbol "main" in current context. I do well at getting the flag [Inferior 2 (process 3525) exited normally] one chance for flag 왜 이런 오류가 발생할까요.. local환경에서 그냥 프로그램 실행하거나 exploit code로 실행할 시에는 잘 됩니다. gdb에서 디버깅하는 과정에서만 오류가 납니다. 도와주세요ㅠ