Qt Creator, ptrace: Operation not permitted. What is the permanent solution?

Question

While debugging C++ code in Qt creator I get the following error

ptrace: Operation not permitted.

Could not attach to the process. Make sure no         


        

Answer 1

If running Ubuntu,

The recommended way to enable the needed ptrace kernel setting (hinted by qtcreator) is to edit /etc/sysctl.d/10-ptrace.conf

sudo vim  /etc/sysctl.d/10-ptrace.conf

Then change

kernel.yama.ptrace_scope = 1

to

kernel.yama.ptrace_scope = 0

Save,

then apply:

$ sudo sysctl --system -a -p|grep yama
kernel.yama.ptrace_scope = 0

run

man sysctl

for more info.