it seem the openocd in esp_flash_probe () have some issue when run flasher_stub code. after programe esp32c3 without hard reset , the GDB can connect the openocd successful and get flash info ok.

GDB is the Gnu Debugger, a program that helps you debug programs written in C, C++ and other programming languages. This is the second of three tutorials. The topics of each tutorial are: Basic GDB ...