MEX-file segmentation violation is detected during running demo

[martinkersner]

Hi!

I am trying to run_demo.m, but while executing MEX-file segmentation violation is detected (whole error message is displayed lower). The error appears during execution of command caffe('init', config.Path.CNN.model_proto, config.Path.CNN.model_data) from cache_FCN8s_results.m. Both variables config.Path.CNN.model_proto and config.Path.CNN.model_data contain correct path to model and its definition.

I have successfully installed (using Matlab R2012a, Ubuntu 14.04) modified version of caffe without any complications.

make all
make test
make runtest
make matcaffe

I have also set environmental variables in .bashrc and run . ~/.bashrc before executing run_demo.m.

export CAFFE_ROOT=/home/martin/DeconvNet/caffe
export CAFFE_PYTHON_PATH=/home/martin/DeconvNet/caffe/python
export PYTHONPATH=/home/martin/DeconvNet/caffe/python:$PYTHONPATH
export LD_LIBRARY_PATH=/home/martin/DeconvNet/caffe/build/lib:$LD_LIBRARY_PATH

I know that the code was tested only with Matlab 2014b, but since the compilation using older version of Matlab was successful I don't think that would be a reason for segmentation violation.

I tried to load model and its definition using python interface, but the modified version of caffe from @HyeonwooNoh seems to be a bit older, so it would need to be modified according to current master branch of caffe and in this I still haven't succeed.

Questions:

• Does anybody know what could cause segmentation violation?
• How to easily adapt code in order to be able to use python interface?

Thank you!

Martin

---

------------------------------------------------------------------------
       Segmentation violation detected at Wed Dec  2 17:13:01 2015
------------------------------------------------------------------------

Configuration:
  Crash Decoding  : Disabled
  Current Visual  : None
  Default Encoding: UTF-8
  GNU C Library   : 2.19 stable
  MATLAB Root     : /usr/local/MATLAB/R2012a
  MATLAB Version  : 7.14.0.739 (R2012a)
  Operating System: Linux 3.13.0-63-generic #103-Ubuntu SMP Fri Aug 14 21:42:59 UTC 2015 x86_64
  Processor ID    : x86 Family 6 Model 62 Stepping 4, GenuineIntel
  Virtual Machine : Java 1.6.0_17-b04 with Sun Microsystems Inc. Java HotSpot(TM) 64-Bit Server VM mixed mode
  Window System   : No active display

Fault Count: 1


Abnormal termination:
Segmentation violation

Register State (from fault):
  RAX = 0000000000000000  RBX = 0000000000000000
  RCX = 0000000000000065  RDX = 0000000000000000
  RSP = 00007f040adf8d60  RBP = 00007f034581c140
  RSI = 0000000000000000  RDI = 00007f03458d5780

   R8 = 0000000000000000   R9 = 00007f0375901740
  R10 = 00000000b2088fbc  R11 = 00000000104e428e
  R12 = 0000000000000065  R13 = 0000000100010008
  R14 = 00007f03fc8c7ee0  R15 = 00007f040adf90a0

  RIP = 00007f0363929242  EFL = 0000000000010246

   CS = 0033   FS = 0000   GS = 0000

Stack Trace (from fault):
[  0] 0x00007f041fc3092e    /usr/local/MATLAB/R2012a/bin/glnxa64/libmwfl.so+00370990 _ZN2fl4diag15stacktrace_base7captureERKNS0_14thread_contextEm+000158
[  1] 0x00007f041fc337d0    /usr/local/MATLAB/R2012a/bin/glnxa64/libmwfl.so+00382928
[  2] 0x00007f041fc33b3b    /usr/local/MATLAB/R2012a/bin/glnxa64/libmwfl.so+00383803 _ZN2fl4diag13terminate_logEPKcRKNS0_14thread_contextE+000171
[  3] 0x00007f041eb17203   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01253891 _ZN2fl4diag13terminate_logEPKcPK8ucontext+000067
[  4] 0x00007f041eb140fd   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01241341
[  5] 0x00007f041eb1579d   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01247133
[  6] 0x00007f041eb15925   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01247525
[  7] 0x00007f041eb15f01   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01249025
[  8] 0x00007f041eb163f5   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01250293
[  9] 0x00007f041d166340              /lib/x86_64-linux-gnu/libpthread.so.0+00066368
[ 10] 0x00007f0363929242             /usr/local/cuda/lib64/libcurand.so.7.5+00148034 curandCreateGenerator+000658
[ 11] 0x00007f036f22068c /home/martin/ml/DeconvNet/inference/caffe/matlab/caffe/caffe.mexa64+00931468
[ 12] 0x00007f036f1d8b25 /home/martin/ml/DeconvNet/inference/caffe/matlab/caffe/caffe.mexa64+00637733
[ 13] 0x00007f036f2ecb0f /home/martin/ml/DeconvNet/inference/caffe/matlab/caffe/caffe.mexa64+01768207
[ 14] 0x00007f036f2f52df /home/martin/ml/DeconvNet/inference/caffe/matlab/caffe/caffe.mexa64+01802975
[ 15] 0x00007f036f2f80cc /home/martin/ml/DeconvNet/inference/caffe/matlab/caffe/caffe.mexa64+01814732
[ 16] 0x00007f036f16cfa4 /home/martin/ml/DeconvNet/inference/caffe/matlab/caffe/caffe.mexa64+00196516
[ 17] 0x00007f036f16d391 /home/martin/ml/DeconvNet/inference/caffe/matlab/caffe/caffe.mexa64+00197521 mexFunction+000384
[ 18] 0x00007f04178a9cca     /usr/local/MATLAB/R2012a/bin/glnxa64/libmex.so+00109770 mexRunMexFile+000090
[ 19] 0x00007f04178a5f79     /usr/local/MATLAB/R2012a/bin/glnxa64/libmex.so+00094073
[ 20] 0x00007f04178a6de1     /usr/local/MATLAB/R2012a/bin/glnxa64/libmex.so+00097761
[ 21] 0x00007f041e7bf063 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_dispatcher.so+00479331 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000515
[ 22] 0x00007f041e085476 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01987702
[ 23] 0x00007f041e036426 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01664038
[ 24] 0x00007f041e03abe4 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01682404
[ 25] 0x00007f041e037333 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01667891
[ 26] 0x00007f041e038037 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01671223
[ 27] 0x00007f041e0a1690 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+02102928
[ 28] 0x00007f041e7bf063 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_dispatcher.so+00479331 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000515
[ 29] 0x00007f041e085476 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01987702
[ 30] 0x00007f041e012d24 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01518884
[ 31] 0x00007f041e03a37e /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01680254
[ 32] 0x00007f041e037333 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01667891
[ 33] 0x00007f041e038037 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01671223
[ 34] 0x00007f041e0a1690 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+02102928
[ 35] 0x00007f041e7bf063 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_dispatcher.so+00479331 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000515
[ 36] 0x00007f041e085476 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01987702
[ 37] 0x00007f041e012d24 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01518884
[ 38] 0x00007f041e03a37e /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01680254
[ 39] 0x00007f041e037333 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01667891
[ 40] 0x00007f041e038037 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01671223
[ 41] 0x00007f041e0a1690 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+02102928
[ 42] 0x00007f041e7bf063 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_dispatcher.so+00479331 _ZN8Mfh_file11dispatch_fhEiPP11mxArray_tagiS2_+000515
[ 43] 0x00007f041e07253b /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01910075
[ 44] 0x00007f041e03081c /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01640476
[ 45] 0x00007f041e02d49f /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01627295
[ 46] 0x00007f041e02dbb5 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwm_interpreter.so+01629109
[ 47] 0x00007f041ed87ade /usr/local/MATLAB/R2012a/bin/glnxa64/libmwbridge.so+00146142
[ 48] 0x00007f041ed8897e /usr/local/MATLAB/R2012a/bin/glnxa64/libmwbridge.so+00149886 mnParser+000622
[ 49] 0x00007f041eafbde2   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01142242 _ZN11mcrInstance30mnParser_on_interpreter_threadEv+000034
[ 50] 0x00007f041eade51a   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01021210
[ 51] 0x00007f041eade598   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01021336
[ 52] 0x00007f041f310053 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwservices.so+00823379
[ 53] 0x00007f041f310315 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwservices.so+00824085
[ 54] 0x00007f041f30ebc1 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwservices.so+00818113
[ 55] 0x00007f0413fd7605   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwuix.so+00505349
[ 56] 0x00007f041f3949a1 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwservices.so+01366433 _ZSt8for_eachIN9__gnu_cxx17__normal_iteratorIPN5boost8weak_ptrIN4sysq10ws_ppeHookEEESt6vectorIS6_SaIS6_EEEENS4_8during_FIS6_NS2_10shared_ptrIS5_EEEEET0_T_SH_SG_+000081
[ 57] 0x00007f041f395aab /usr/local/MATLAB/R2012a/bin/glnxa64/libmwservices.so+01370795
[ 58] 0x00007f041f3935f9 /usr/local/MATLAB/R2012a/bin/glnxa64/libmwservices.so+01361401 _Z25svWS_ProcessPendingEventsiib+000665
[ 59] 0x00007f041eadd76f   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01017711
[ 60] 0x00007f041eaddc3b   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01018939
[ 61] 0x00007f041eaddd97   /usr/local/MATLAB/R2012a/bin/glnxa64/libmwmcr.so+01019287
[ 62] 0x00007f041d15e182              /lib/x86_64-linux-gnu/libpthread.so.0+00033154
[ 63] 0x00007f041ce8b47d                    /lib/x86_64-linux-gnu/libc.so.6+01025149 clone+000109


This error was detected while a MEX-file was running. If the MEX-file
is not an official MathWorks function, please examine its source code
for errors. Please consult the External Interfaces Guide for information
on debugging MEX-files.