<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-IN" link="#0563C1" vlink="#954F72"> <div class="WordSection1"> Hi,<o:p></o:p> <o:p> </o:p> I am using mesa 12.0.1 from yocto project (<a href="http://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/meta/recipes-graphics/mesa/mesa_12.0.1.bb?h=morty">http://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/meta/recipes-graphics/mesa/mesa_12.0.1.bb?h=morty</a>). While building core-image-sato ( which is the graphical image ), I found that Qt5 examples for opengl are failing for x32. The target machine used is intel-corei7-64. This is for minnowmax board. The image uses mesa and below is the console log of one of the Qt5 example ran on the target:<o:p></o:p> <o:p> </o:p> Log:<o:p></o:p> <o:p> </o:p> Python Exception <class 'ImportError'> No module named 'imp': <o:p></o:p> gdb: warning: <o:p></o:p> Could not load the Python gdb module from `/usr/share/gdb/python'.<o:p></o:p> Limited Python support is available from the _gdb module.<o:p></o:p> Suggest passing --data-directory=/path/to/gdb/data-directory.<o:p></o:p> <o:p> </o:p> GNU gdb (GDB) 7.11.0.20160511-git<o:p></o:p> Copyright (C) 2016 Free Software Foundation, Inc.<o:p></o:p> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html><o:p></o:p> This is free software: you are free to change and redistribute it.<o:p></o:p> There is NO WARRANTY, to the extent permitted by law. Type "show copying"<o:p></o:p> and "show warranty" for details.<o:p></o:p> This GDB was configured as "x86_64-mel-linux-gnux32".<o:p></o:p> Type "show configuration" for configuration details.<o:p></o:p> For bug reporting instructions, please see:<o:p></o:p> <http://www.gnu.org/software/gdb/bugs/>.<o:p></o:p> Find the GDB manual and other documentation resources online at:<o:p></o:p> <http://www.gnu.org/software/gdb/documentation/>.<o:p></o:p> For help, type "help".<o:p></o:p> Type "apropos word" to search for commands related to "word"...<o:p></o:p> Reading symbols from ./opengl/hellowindow/hellowindow...Reading symbols from /usr/share/qt5/examples/opengl/hellowindow/.debug/hellowindow...done.<o:p></o:p> done.<o:p></o:p> (gdb) run<o:p></o:p> Starting program: /usr/share/qt5/examples/opengl/hellowindow/hellowindow <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.<o:p></o:p> Traceback (most recent call last):<o:p></o:p> File "/usr/share/gdb/auto-load/usr/libx32/libglib-2.0.so.0.4800.2-gdb.py", line 2, in <module><o:p></o:p> import gdb<o:p></o:p> File "/usr/share/gdb/python/gdb/__init__.py", line 23, in <module><o:p></o:p> from imp import reload<o:p></o:p> ImportError: No module named 'imp'<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> [New LWP 731]<o:p></o:p> [New LWP 732]<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> [New LWP 733]<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> [ 944.753665] NOHZ: local_softirq_pending 202<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <clas[ 945.196771] NOHZ: local_softirq_pending 02<o:p></o:p> s 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> <o:p> </o:p> Thread 1 "hellowindow" received signal SIGSEGV, Segmentation fault.<o:p></o:p> 0xf6772cab in glGetString () from /usr/libx32/libGLESv2.so.2<o:p></o:p> (gdb) bt<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> Python Exception <class 'ImportError'> No module named 'imp': <o:p></o:p> #0 0xf6772cab in glGetString () from /usr/libx32/libGLESv2.so.2<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> #1 0xebee492a in QEGLPlatformContext::updateFormatFromGL (this=<optimized out>) at /usr/src/debug/qtbase/5.6.2+gitAUTOINC+b4ada3f0d8-r0/git/src/platformsupport/eglconvenience/qeglplatformcontext.cpp:314<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> #2 0xf7177131 in QOpenGLContext::create (this=<optimized out>) at /usr/src/debug/qtbase/5.6.2+gitAUTOINC+b4ada3f0d8-r0/git/src/gui/kernel/qopenglcontext.cpp:609<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> #3 0x00404221 in Renderer::Renderer (this=<optimized out>, format=..., share=<optimized out>, screen=<optimized out>)<o:p></o:p> at /usr/src/debug/qtbase/5.6.2+gitAUTOINC+b4ada3f0d8-r0/git/examples/opengl/hellowindow/hellowindow.cpp:58<o:p></o:p> #4 0x00403367 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/qtbase/5.6.2+gitAUTOINC+b4ada3f0d8-r0/git/examples/opengl/hellowindow/main.cpp:71<o:p></o:p> Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p> (gdb) quit<o:p></o:p> A debugging session is active.<o:p></o:p> <o:p> </o:p> Inferior 1 [process 724] will be killed.<o:p></o:p> <o:p> </o:p> Quit anyway? (y or n) y <o:p></o:p> root@intel-corei7-64:/usr/share/qt5/examples#<o:p></o:p> <div style="mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;padding:0cm 0cm 1.0pt 0cm"> <o:p> </o:p> </div> I saw that glGetString was causing the issue from the backtrace in gdb.<o:p></o:p> <o:p> </o:p> To my surprise the mesa-demos are also failing with segmentation fault.<o:p></o:p> <o:p> </o:p> I have even tried to apply patch: <a href="https://cgit.freedesktop.org/mesa/mesa/commit/?id=89458366585c34879b70110758bb4fd3acb62ce0"> https://cgit.freedesktop.org/mesa/mesa/commit/?id=89458366585c34879b70110758bb4fd3acb62ce0</a> now the error changed to bus error:<o:p></o:p> <o:p> </o:p> <div style="mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;padding:0cm 0cm 1.0pt 0cm"> Below are the logs:<o:p></o:p> </div> <pre>root@intel-corei7-64:/usr/share/qt5/examples# ./opengl/hellowindow/hellowindow <o:p></o:p></pre> <pre>Bus error (core dumped)<o:p></o:p></pre> <pre>root@intel-corei7-64:/usr/share/qt5/examples# gdb ./opengl/hellowindow/hellowindow <o:p></o:p></pre> <pre>Python Exception <class 'ImportError'> No module named 'imp': <o:p></o:p></pre> <pre>gdb: warning: <o:p></o:p></pre> <pre>Could not load the Python gdb module from `/usr/share/gdb/python'.<o:p></o:p></pre> <pre>Limited Python support is available from the _gdb module.<o:p></o:p></pre> <pre>Suggest passing --data-directory=/path/to/gdb/data-directory.<o:p></o:p></pre> <pre><o:p> </o:p></pre> <pre>GNU gdb (GDB) 7.11.0.20160511-git<o:p></o:p></pre> <pre>Copyright (C) 2016 Free Software Foundation, Inc.<o:p></o:p></pre> <pre>License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html><o:p></o:p></pre> <pre>This is free software: you are free to change and redistribute it.<o:p></o:p></pre> <pre>There is NO WARRANTY, to the extent permitted by law. Type "show copying"<o:p></o:p></pre> <pre>and "show warranty" for details.<o:p></o:p></pre> <pre>This GDB was configured as "x86_64-mel-linux-gnux32".<o:p></o:p></pre> <pre>Type "show configuration" for configuration details.<o:p></o:p></pre> <pre>For bug reporting instructions, please see:<o:p></o:p></pre> <pre><http://www.gnu.org/software/gdb/bugs/>.<o:p></o:p></pre> <pre>Find the GDB manual and other documentation resources online at:<o:p></o:p></pre> <pre><http://www.gnu.org/software/gdb/documentation/>.<o:p></o:p></pre> <pre>For help, type "help".<o:p></o:p></pre> <pre>Type "apropos word" to search for commands related to "word"...<o:p></o:p></pre> <pre>Reading symbols from ./opengl/hellowindow/hellowindow...Reading symbols from /usr/share/qt5/examples/opengl/hellowindow/.debug/hellowindow...done.<o:p></o:p></pre> <pre>done.<o:p></o:p></pre> <pre>(gdb) run<o:p></o:p></pre> <pre>Starting program: /usr/share/qt5/examples/opengl/hellowindow/hellowindow <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.<o:p></o:p></pre> <pre>Traceback (most recent call last):<o:p></o:p></pre> <pre> File "/usr/share/gdb/auto-load/usr/libx32/libglib-2.0.so.0.4800.2-gdb.py", line 2, in <module><o:p></o:p></pre> <pre> import gdb<o:p></o:p></pre> <pre> File "/usr/share/gdb/python/gdb/__init__.py", line 23, in <module><o:p></o:p></pre> <pre> from imp import reload<o:p></o:p></pre> <pre>ImportError: No module named 'imp'<o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>[New LWP 771]<o:p></o:p></pre> <pre>[New LWP 772]<o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>[New LWP 773]<o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>[New LWP 774]<o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre><o:p> </o:p></pre> <pre>Thread 1 "hellowindow" received signal SIGBUS, Bus error.<o:p></o:p></pre> <pre>0xf7fb8030 in ?? ()<o:p></o:p></pre> <pre>(gdb) bt<o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <pre>Python Exception <class 'ImportError'> No module named 'imp': <o:p></o:p></pre> <pre>#0 0xf7fb8030 in ?? ()<o:p></o:p></pre> <pre>#1 0x00000000 in ?? ()<o:p></o:p></pre> <pre>Python Exception <class 'NameError'> Installation error: gdb.execute_unwinders function is missing: <o:p></o:p></pre> <div style="mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;padding:0cm 0cm 1.0pt 0cm"> <pre style="border:none;padding:0cm">(gdb)<o:p></o:p></pre> </div> <o:p> </o:p> Any helping hand would be much appreciated regarding the failure to run mesa-demos or Qt5 apps on the target. I am completely new with Mesa code base.<o:p></o:p> <o:p> </o:p> Thanks,<o:p></o:p> Sujith H<o:p></o:p> </div> </body> </html>