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valgrind in qtcreator crashed

  • I tried to use valgrind tools to analyze my application. But it can't work. So I created a plain QWidgets project and it still can't work. The Qt version is 5.12.2, QtCreator 4.9 and I run it in vmware Linux. The log is as followed.

    ==5882== Callgrind, a call-graph generating cache profiler
    ==5882== Copyright (C) 2002-2017, and GNU GPL'd, by Josef Weidendorfer et al.
    ==5882== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
    ==5882== Command: /home/guyan/QtProjects/build-memcheck-Desktop_Qt_5_12_2_GCC_64bit-Debug/memcheck
    ==5882== For interactive control, run 'callgrind_control -h'.
    ==5882== Process terminating with default action of signal 11 (SIGSEGV)
    ==5882==  General Protection Fault
    ==5882==    at 0x276C7162: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==5882==    by 0x276D4505: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==5882==    by 0x276D49B6: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==5882==    by 0x26F609F2: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==5882==    by 0x27472E50: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==5882==    by 0x2733B811: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==5882==    by 0x273368DA: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==5882==    by 0x25C4F476: ??? (in /usr/lib/x86_64-linux-gnu/
    ==5882==    by 0x25C22E1D: ??? (in /usr/lib/x86_64-linux-gnu/
    ==5882==    by 0x25C1E543: ??? (in /usr/lib/x86_64-linux-gnu/
    ==5882==    by 0x25C1EF2C: ??? (in /usr/lib/x86_64-linux-gnu/
    ==5882==    by 0x257C5841: QXcbGlxWindow::createVisual() (qxcbglxwindow.cpp:66)
    ==5882== Events    : Ir
    ==5882== Collected : 0
    ==5882== I   refs:      0

    It seems that the faults are caused by vmware player. So is there any way to solve it?

  • Lifetime Qt Champion

    Did you install the wmware tools also ?
    also this seems a bit odd

    Does openGl generally work in your virtual machine ?

  • This post is deleted!

  • @mrjj Yes, I have installed the vmware tools. And I tried a simple programme with OpenGL Library. It do works.
    About, I really don't know what it is. So what can I do?

  • Lifetime Qt Champion

    Really not sure what else could be wrong then.
    valgrind really dont use openGL so its a bit odd to start with.
    Does valgrind work if you start it from commandline ?

    btw: what linux distro do you use ?

  • @mrjj The problem is the same when I run it from commandline. I wonder if the openGL is used by the Qt application.
    And I use the Ubuntu 18.04LTS.

  • Lifetime Qt Champion

    well if you didnt use any openGL Qt features in your app, it should not.

    Give it a day. Maybe others have run into same issue.

  • @mrjj OK, thanks. If it still can't work. I may install the Linux directly.

  • Lifetime Qt Champion

    ok. good plan.
    even it should also work virtually.

  • i encounter exatly the same problem under ubuntu 18.04lts under vmware trying to use valgrind on my qwidgets app

    Command: /home/jk/QtProjetcs/FOSVoith/build-trunkQT-Desktop_Qt_5_12_3_GCC_64bit2-Profile/trunkQT
    ==7915== For interactive control, run 'callgrind_control -h'.
    ==7915== Process terminating with default action of signal 11 (SIGSEGV)
    ==7915== General Protection Fault
    ==7915== at 0x2EE64162: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==7915== by 0x2EE71505: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==7915== by 0x2EE719B6: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==7915== by 0x2E6FD9F2: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==7915== by 0x2EC0FE50: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==7915== by 0x2EAD8811: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==7915== by 0x2EAD38DA: ??? (in /usr/lib/x86_64-linux-gnu/dri/
    ==7915== by 0x2D3E8184: ??? (in /usr/lib/x86_64-linux-gnu/
    ==7915== by 0x2D3BFE33: ??? (in /usr/lib/x86_64-linux-gnu/
    ==7915== by 0x2D3BB543: ??? (in /usr/lib/x86_64-linux-gnu/
    ==7915== by 0x2D3BBF2C: ??? (in /usr/lib/x86_64-linux-gnu/
    ==7915== by 0x2CF7D841: QXcbGlxWindow::createVisual() (qxcbglxwindow.cpp:66)
    ==7915== Events : Ir
    ==7915== Collected : 380114336
    ==7915== I refs: 380,114,336

    did smd find a solution?

  • It works after doing this: export LIBGL_ALWAYS_SOFTWARE=1
    Huge thanks to ppl in slack/qt for the solution

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