[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
For the record, this error occurs when I tried to run the default C++ project. Ubuntu is shipping a development environment that is broken for a common use case. Is there some way to just disable ptrace so that I can build and run a project? Maybe that could be set as default. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
Following the discussion I am not sure if we as the distro can and will fix this issue. If you think it is a bug in the upstream code then please file a bug against the upstream project. Or please suggest a doable change in the Ubuntu release. ** Changed in: qtcreator (Ubuntu) Status: Confirmed = Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
Thanks for your suggestions, omkar, but both are not acceptable fixes for the end user. Option 1 means running QtCreator and the spawned application as root, which is frowned upon for good reasons. Debugging should work without sudo. Option 2 is already outlined in the link I posted in the original bug submission, so it's nothing new. But it disables the security feature for all application, which is also not desirable. Even if option 1 or 2 were acceptable, it's certainly not acceptable that the user has to change the system configuration by herself to get debugging to work. It should work out of the box. So it's definitaly a bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
I confirm this behaviour. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
The solution by Simon K stops the ptrace error, but I then I would get prompted that: The debugger could not load the debugging helper library. The debugging helper is used to nicely format the values of some Qt and Standard Library data types. It must be compiled for each used Qt version separately. In the Qt Creator Build and Run preferences page, select a Qt version, expand the Details section and click Build All. with options to open qt options, turn off helper usage, show details, and continue anyway. If I selected continue anyway, the project appears to begin debugging, but does not execute. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
The ptrace error is a result of running your app in an terminal. To be able to debug you could either deactivate the ptrace-restrictions or disable the terminal. To disable the terminal you click: 1. Projects (in the side menu between Debug and Packaging) 2. Run (in the second line from the top, it says: Desktop Build _Run_) 3. Empty the check box Run in terminal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: qtcreator (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
Found this bug recorded upstream: https://bugreports.qt- project.org/browse/QTCREATORBUG-3509 -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qtcreator in Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
** Changed in: qtcreator (Ubuntu) Status: Invalid = New -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qtcreator in Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
** Description changed: Debugging with Qt Creator does not work. Upon entering debug mode, the error message in the attached screenshot is presented (translation: ptrace: Operation not permitted). The associated console window stays open without any possibility of interaction. More info and a temporary fix for users can be found here: http://www.deder.at/wordpress/?p=307 + + More info on the error cause: + https://wiki.ubuntu.com/SecurityTeam/Roadmap/KernelHardening#ptrace How to reproduce: - In QtCreator, create a new Plain C or Plain C++ project. - Set a breakpoint in the generated main function - click the Debug-button in the lower left bar. Expected: Debug mode opens with the ability to set breakpoints, edit watches and step through the source code. What happens: See attached screenshot. Debugging doesn't work. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: qtcreator 2.7.0~beta-0ubuntu2 ProcVersionSignature: Ubuntu 3.8.0-11.20-generic 3.8.2 Uname: Linux 3.8.0-11-generic x86_64 ApportVersion: 2.9.1-0ubuntu1 Architecture: amd64 Date: Mon Mar 18 16:18:47 2013 InstallationDate: Installed on 2013-03-08 (9 days ago) InstallationMedia: Ubuntu 13.04 Raring Ringtail - Alpha amd64 (20130308) MarkForUpload: True SourcePackage: qtcreator UpgradeStatus: No upgrade log present (probably fresh install) -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qtcreator in Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
This is a security feature not a bug. The wiki page you linked has instructions on how to disable it if you wish to do so. Debugging works when you start the application from Qt Creator as opposed to attaching it to an already running process. ** Changed in: qtcreator (Ubuntu) Status: New = Invalid -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qtcreator in Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
[Bug 1156674] Re: QtCreator: ptrace: Operation not permitted. in Debug mode
No. As explained in my How to reproduce section, Debugging does *not* work when you start the application from Qt Creator. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1156674 Title: QtCreator: ptrace: Operation not permitted. in Debug mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1156674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
