是。使用attach命令。查看此链接以获取更多信息。打字help attach在GDB控制台提供了以下：
(gdb) help attach
附加到GDB外部的进程或文件。该命令附加到另一个目标，该目标与上一个“ target”命令的类型相同（“ info files”将显示目标堆栈）。该命令可以将进程ID，进程名称（带有可选的进程ID作为后缀）或设备文件作为参数。对于进程ID，您必须具有向该进程发送信号的权限，并且该信号必须具有与调试器相同的有效uid。当attach对现有的进程使用“ ”时，调试器会查找该进程中正在运行的程序，首先在当前工作目录中查找，或者使用源文件搜索路径（如果在该目录中找不到）（请参阅“directory“命令）。您也可以使用“ file”命令指定程序，并加载其符号表。
注意：由于Linux内核中提高了安全性，因此可能难以附加到进程上，例如，从另一个shell附加到一个shell的子进程。
您可能需要/proc/sys/kernel/yama/ptrace_scope根据需要进行设置。现在，许多系统默认为1或更高。
The sysctl settings (writable only with CAP_SYS_PTRACE) are:
0 - classic ptrace permissions: a process can PTRACE_ATTACH to any other
process running under the same uid, as long as it is dumpable (i.e.
did not transition uids, start privileged, or have called
prctl(PR_SET_DUMPABLE...) already). Similarly, PTRACE_TRACEME is
unchanged.
1 - restricted ptrace: a process must have a predefined relationship
with the inferior it wants to call PTRACE_ATTACH on. By default,
this relationship is that of only its descendants when the above
classic criteria is also met. To change the relationship, an
inferior can call prctl(PR_SET_PTRACER, debugger, ...) to declare
an allowed debugger PID to call PTRACE_ATTACH on the inferior.
Using PTRACE_TRACEME is unchanged.
2 - admin-only attach: only processes with CAP_SYS_PTRACE may use ptrace
with PTRACE_ATTACH, or through children calling PTRACE_TRACEME.
3 - no attach: no processes may use ptrace with PTRACE_ATTACH nor via
PTRACE_TRACEME. Once set, this sysctl value cannot be changed.
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