Non-root cannot gdb attach restrictions

Could not attach to process. If your UID matches the UID of the target
Process, check the setting of/proc/sys/kernel/yama/ptrace_scope, or try
Again as the root user. For more details, see/etc/sysctl.d/10-ptrace.conf

Starting with ubuntu10.10, process A cannot debug process B unless process B is a child process of process A, or process A is run as root. This increases the security of the process. This security limit is the default, but you can debug the purpose of process B by modifying the configuration file to achieve any process a.

Before modification (/etc/sysctl.d/10-ptrace.conf):
Kernel.yama.ptrace_scope = 1
After modification:
Kernel.yama.ptrace_scope = 0

Note : You need to restart the machine after the modification to take effect, personally tested Oh

Non-root cannot gdb attach restrictions