segmentation fault when linemod training

[Wesley-Lin]

Hi Sir,

I follow the web site to enable object-recognition-kitchen.
I can setup the database successfully, and I also can see mesh via web_ui.

However, when I training it, the segmentation fault will happen,

I check the source I built, there is no error neither, thus, I have no idea about that

Can anyone give me some tips ? Thanks a lot.

[Wesley-Lin]

Hi
I reinstall again and the error still existed. In additional, I also follows another issue to use GLUT to build, but it seems no useful.
The platform I use is Tegra TK1.
BTW, I run the program with gdb, and I post it as blew

gdb --args python ./training -c rospack find object_recognition_linemod/conf/training.ork --visualize
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
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and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabihf".
Type "show configuration" for configuration details.
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For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from python...(no debugging symbols found)...done.
(gdb) r
Starting program: /usr/bin/python ./training -c /home/ubuntu/catkin_ws/src/ork/linemod/conf/training.ork --visualize
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
[New Thread 0xadd21460 (LWP 3417)]
Training 1 objects.
computing object_id: f3f45b3ae96a87c3508e19cf6d000405
[New Thread 0xad4a1460 (LWP 3419)]
[Thread 0xad4a1460 (LWP 3419) exited]

Program received signal SIGSEGV, Segmentation fault.
_Constructcv::Ptr<cv::linemod::Modality, cv::Ptrcv::linemod::Modality > (__value=..., __p=0x774b9008)
at /usr/include/c++/4.8/bits/stl_construct.h:83
83 ::new(static_cast<void*>(__p)) _T1(__value);
(gdb)

Please help me solve the issue.
Thanks so much

[Wesley-Lin]

Hi
I had solved the issue, but I encountered another issue.
Now I can training at first, but it would stop during loading image, the error log is "NVMAP_IOC_FREE failed: Bad file descriptor".
Any pointer to that will be highly appreciated.

rosrun object_recognition_core training -c rospack find object_recognition_linemod/conf/training.ork
Training 1 objects.
computing object_id: 128237c882f7be7bc32ed45c8a000aec
Info, T0: Load /tmp/fileUE6JdD.stl
Info, T0: Found a matching importer for this file format
Info, T0: Import root directory is '/tmp/'
Info, T0: Entering post processing pipeline
Info, T0: Points: 0, Lines: 0, Triangles: 1, Polygons: 0 (Meshes, X = removed)
Error, T0: FindInvalidDataProcess fails on mesh normals: Found zero-length vector
Info, T0: FindInvalidDataProcess finished. Found issues ...
Info, T0: GenVertexNormalsProcess finished. Vertex normals have been calculated
Error, T0: Failed to compute tangents; need UV data in channel0
Info, T0: JoinVerticesProcess finished | Verts in: 1536 out: 258 | ~83.2%
Info, T0: Cache relevant are 1 meshes (512 faces). Average output ACMR is 0.669922
Info, T0: Leaving post processing pipeline
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor
NVMAP_IOC_FREE failed: Bad file descriptor