[Bug 1156674] Re: QtCreator: "ptrace: Operation not permitted." in Debug mode

[omkar ashok kulkarni]

First of all it's not bug. It's for security purposes.

Some things about PTRACE:
1)The PTRACE system is used for debugging.  
2)With it, a single user process  can attach to any other dumpable process owned by the same user. A PTRACE scope of "0" is the more permissive mode. A scope of "1" limits PTRACE only to direct child processes.

This is the stuff from "/etc/sysctl.d/10-ptrace.conf" file.

So for successful debugging with "Qt Creator" you have two options:
Option 1:
1. Open "Qt Creator" with superuser privileges. For this open terminal type command "sudo  -s" , then enter password.
2.Then enter command "qtcreator". 


Option 2:
1.Open terminal type "sudo -s", then enter password.
2.Then go to directory "/proc/sys/kernel/yama/" by using "cd" command.
3.In this directory open "ptrace_scope" file by using "gedit ptrace_scope" command. (You can use any editor to edit file I've used here gedit).
4.In this file default value is "1" , so change this value to "0".
5.Save this file and then close it.

Now you can surely do debugging in "Qt Creator".

That's it.

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Title:
  QtCreator: "ptrace: Operation not permitted." in Debug mode

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