Re: Release 3.8.1 on ubuntu 18.04 qa_qtgui (Failed) with Segmentation fault

[Joe D]

Thanks Vasil for correcting my approach

below the relevant excerpt from the new valgrind log

Attached the full one

Regarding gdb , is there any additional steps to load the symbols or the instruction on https://wiki.gnuradio.org/index.php/TutorialsDebugging will suffice

==22123== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==22123==  Bad permissions for mapped region at address 0x104C66C0
==22123==    at 0x13B1D604: ref (qlist.h:121)
==22123==    by 0x13B1D604: QList (qlist.h:121)
==22123==    by 0x13B1D604: QPrinterInfoPrivate (qprinterinfo_p.h:71)
==22123==    by 0x13B1D604: __static_initialization_and_destruction_0 (qprinterinfo.cpp:35)
==22123==    by 0x13B1D604: _GLOBAL__sub_I_qprinterinfo.cpp (qprinterinfo.cpp:163)
==22123==    by 0x4010732: call_init (dl-init.c:72)
==22123==    by 0x4010732: _dl_init (dl-init.c:119)
==22123==    by 0x40151FE: dl_open_worker (dl-open.c:522)
==22123==    by 0x4FA32DE: _dl_catch_exception (dl-error-skeleton.c:196)
==22123==    by 0x40147C9: _dl_open (dl-open.c:605)
==22123==    by 0x544CF95: dlopen_doit (dlopen.c:66)
==22123==    by 0x4FA32DE: _dl_catch_exception (dl-error-skeleton.c:196)
==22123==    by 0x4FA336E: _dl_catch_error (dl-error-skeleton.c:215)
==22123==    by 0x544D734: _dlerror_run (dlerror.c:162)
==22123==    by 0x544D050: dlopen@@GLIBC_2.2.5 (dlopen.c:87)
==22123==    by 0x5F7DBC: _PyImport_FindSharedFuncptr (in /usr/bin/python3.6)
==22123==    by 0x5FB027: _PyImport_LoadDynamicModuleWithSpec (in /usr/bin/python3.6)
==22123==
==22123== HEAP SUMMARY:
==22123==     in use at exit: 5,615,552 bytes in 7,555 blocks
==22123==   total heap usage: 25,234 allocs, 17,679 frees, 48,677,061 bytes allocated
==22123==
==22123== LEAK SUMMARY:
==22123==    definitely lost: 157,672 bytes in 86 blocks
==22123==    indirectly lost: 0 bytes in 0 blocks
==22123==      possibly lost: 230,559 bytes in 220 blocks
==22123==    still reachable: 5,227,321 bytes in 7,249 blocks
==22123==                       of which reachable via heuristic:
==22123==                         newarray           : 1,536 bytes in 16 blocks
==22123==         suppressed: 0 bytes in 0 blocks
==22123== Rerun with --leak-check=full to see details of leaked memory
==22123==
==22123== For counts of detected and suppressed errors, rerun with: -v
==22123== Use --track-origins=yes to see where uninitialised values come from
==22123== ERROR SUMMARY: 11565 errors from 209 contexts (suppressed: 0 from 0)
Segmentation fault

On Sun, Apr 26, 2020 at 9:27 PM Vasil Velichkov <address@hidden> wrote:

Hi Joe,

On 26/04/2020 14.01, Joe D wrote:
> Attached a valgrind log

>> root@ubuntu-srv-10:/Applications/gnuradio/build/gr-qtgui/python/qtgui# valgrind -v ctest -V -R qa_qtgui

You can't run this test under valgrind like this. You need to open ./build/gr-qtgui/python/qtgui/qa_qtgui_test.sh and on the last line add valgrind in front of python3. Something like:

    valgrind /usr/bin/python3 -B /Applications/gnuradio/gr-qtgui/python/qtgui/qa_qtgui.py

Similarly you can run it under gdb in order to get a full backtrace of this segfault.

Regards,
Vasil

qa_qtgui_Failed_2.zip
Description: Zip archive