The BTP command takes a process ID as an argument and does a stack traceback for that particular process.
btp命令将进程标识作为参数，并对这个特定进程进行堆栈回溯。
If the CONFIG_FRAME_POINTER option was set during kernel compilation, the frame pointer register is used to maintain stacks and, hence, the stack traceback can be performed correctly.
如果内核编译期间设置了CONFIG_FRAME _ POINTER选项，那么就用帧指针寄存器来维护堆栈，从而就可以正确地执行堆栈回溯。
The preceding part of the error message shows the context where the exception happened, in the form of a stack traceback.
错误信息的前半部分以堆栈的形式列出异常发生的位置。
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