Segfault when exiting interface

[daurer]

When closing the interface after l have listened and received signals via ZMQ (even if I stopped listening before closing), I got a segfault.

Closing [psnxserv01:05428] * Process received signal * [psnxserv01:05428] Signal: Segmentation fault (11) [psnxserv01:05428] Signal code: Address not mapped (1) [psnxserv01:05428] Failing at address: 0x40 [psnxserv01:05428] [ 0] /lib64/libpthread.so.0[0x32b960f710] [psnxserv01:05428] [ 1] /reg/g/psdm/sw/external/qt/4.8.5/x86_64-rhel6-gcc44-opt/lib/libQtCore.so.4(_ZNK7QObject6threadEv+0x4)[0x7fcff6b846e4] [psnxserv01:05428] [ 2] /reg/g/psdm/sw/releases/ana-current/arch/x86_64-rhel6-gcc44-opt/python/PyQt4/QtGui.so(+0x41e13e)[0x7fcff7fe213e] [psnxserv01:05428] [ 3] /reg/g/psdm/sw/releases/ana-current/arch/x86_64-rhel6-gcc44-opt/python/sip.so(+0x76be)[0x7fcff86446be] [psnxserv01:05428] [ 4] /reg/g/psdm/sw/releases/ana-current/arch/x86_64-rhel6-gcc44-opt/python/sip.so(+0x7709)[0x7fcff8644709] [psnxserv01:05428] [ 5] python[0x464c51] [psnxserv01:05428] [ 6] python[0x42068b] [psnxserv01:05428] [ 7] python(PyDict_Clear+0x142)[0x448b42] [psnxserv01:05428] [ 8] python[0x448b59] [psnxserv01:05428] [ 9] python[0x4d03c8] [psnxserv01:05428] [10] python(PyGC_Collect+0x24)[0x4d0994] [psnxserv01:05428] [11] python(Py_Finalize+0xf6)[0x4bcd76] [psnxserv01:05428] [12] python[0x4bc83c] [psnxserv01:05428] [13] python(PyErr_PrintEx+0x1a5)[0x4bca85] [psnxserv01:05428] [14] python(PyRun_SimpleFileExFlags+0x12a)[0x4bd6aa] [psnxserv01:05428] [15] python(Py_Main+0xa95)[0x414e65] [psnxserv01:05428] [16] /lib64/libc.so.6(__libc_start_main+0xfd)[0x32b8e1ed5d] [psnxserv01:05428] [17] python[0x413ff9] [psnxserv01:05428] * End of error message * Segmentation fault

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• Bitbucket: https://bitbucket.org/spinitiative/hummingbird.git/issue/5
• Originally reported by: Benedikt Daurer
• Originally created at: 2015-02-26T00:32:50.520

[daurer]

This is probably a pyqtgraph problem. Give it a try now to check if it still happens.

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Original comment by: Filipe Maia

[daurer]

I just would like to point out that the solution is not totally satisfactory. I had to do:

    # Force exit to prevent pyqtgraph from crashing
    os._exit(0)

inside the closeEvent() of the Interface class.

This might came to bite us again.

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Original comment by: Filipe Maia