Problems with Python Layer: Protobuf Internal Error - Mutex Lock

[paridhisrivastava]

Hi,
I am trying to run a Caffe model which includes a python layer. Initially, when I tried to run the model prototxt file, I got an error asking me to update the version of Protocol Buffer to 3.4.0. So I did that by building from the source code. I have also upgraded the protobuf package in python to version 3.4.0. After doing this and rebuilding caffe, I'm getting the following error on running a prototxt file containing the python layer. [Please note that this error does not generate when I run another model without Python layer.]

*** Aborted at 1506013588 (unix time) try "date -d @1506013588" if you are using GNU date ***
PC: @ 0x7f7cb3719516 google::protobuf::internal::Mutex::Lock()
*** SIGSEGV (@0x0) received by PID 26314 (TID 0x7f7d9961e740) from PID 0; stack trace: ***
@ 0x7f7d961dc4b0 (unknown)
@ 0x7f7cb3719516 google::protobuf::internal::Mutex::Lock()
@ 0x7f7cb3719833 google::protobuf::internal::OnShutdown()
@ 0x7f7d994686ba (unknown)
@ 0x7f7d994687cb (unknown)
@ 0x7f7d9946d8e2 (unknown)
@ 0x7f7d99468564 (unknown)
@ 0x7f7d9946cda9 (unknown)
@ 0x7f7d8815ef09 (unknown)
@ 0x7f7d99468564 (unknown)
@ 0x7f7d8815f571 (unknown)
@ 0x7f7d8815efa1 dlopen
@ 0x7f7d969bda69 _PyImport_FindSharedFuncptr
@ 0x7f7d96976ea2 _PyImport_LoadDynamicModuleWithSpec
@ 0x7f7d9697a7e7 (unknown)
@ 0x7f7d96827199 PyCFunction_Call
@ 0x7f7d9694273e PyEval_EvalFrameEx
@ 0x7f7d969d1c0c (unknown)
@ 0x7f7d9693fe09 PyEval_EvalFrameEx
@ 0x7f7d96941509 PyEval_EvalFrameEx
@ 0x7f7d96941509 PyEval_EvalFrameEx
@ 0x7f7d96941509 PyEval_EvalFrameEx
@ 0x7f7d96941509 PyEval_EvalFrameEx
@ 0x7f7d969d1c0c (unknown)
@ 0x7f7d969d1ce3 PyEval_EvalCodeEx
@ 0x7f7d96859a98 (unknown)
@ 0x7f7d969008ee PyObject_Call
@ 0x7f7d968fbf0f _PyObject_CallMethodIdObjArgs
@ 0x7f7d96978824 PyImport_ImportModuleLevelObject
@ 0x7f7d96945588 (unknown)
@ 0x7f7d968271b9 PyCFunction_Call
@ 0x7f7d969008ee PyObject_Call

Also, I'm using Ubuntu 16.04.

Any help/pointers would be appreciated.
Thanks!

[AutoAuto]

Hi,

What is the status of this issue ? I have the same issue with protobuf and tensorflow.

[kodonnell]

This?

[anandolee]

Sorry, I can't tell anything from the stack trace... @amauryfa, do you have any idea?

[catskul]

seeing the same in gazebo:

#0  0x00007fff7a4f1516 in google::protobuf::internal::Mutex::Lock() () from /usr/lib/x86_64-linux-gnu/libprotobuf-lite.so.9
#1  0x00007fff7a4f1833 in google::protobuf::internal::OnShutdown(void (*)()) () from /usr/lib/x86_64-linux-gnu/libprotobuf-lite.so.9
#2  0x00007ffff7de76ba in call_init (l=<optimized out>, argc=argc@entry=1, argv=argv@entry=0x7fffffffcf48, env=env@entry=0x7fffffffcf58) at dl-init.c:72
#3  0x00007ffff7de77cb in call_init (env=0x7fffffffcf58, argv=0x7fffffffcf48, argc=1, l=<optimized out>) at dl-init.c:30
#4  _dl_init (main_map=main_map@entry=0x13ff390, argc=1, argv=0x7fffffffcf48, env=0x7fffffffcf58) at dl-init.c:120
#5  0x00007ffff7dec8e2 in dl_open_worker (a=a@entry=0x7fffffffc2f0) at dl-open.c:575
#6  0x00007ffff7de7564 in _dl_catch_error (objname=objname@entry=0x7fffffffc2e0, errstring=errstring@entry=0x7fffffffc2e8, mallocedp=mallocedp@entry=0x7fffffffc2df, 
    operate=operate@entry=0x7ffff7dec4d0 <dl_open_worker>, args=args@entry=0x7fffffffc2f0) at dl-error.c:187
#7  0x00007ffff7debda9 in _dl_open (file=0x13ff188 "/home/asomerville/work/knight/extinstall/plugins/platformthemes/libqgtk3.so", mode=-2147479551, caller_dlopen=0x7ffff6a5b73d, nsid=-2, argc=<optimized out>, 
    argv=<optimized out>, env=0x7fffffffcf58) at dl-open.c:660
#8  0x00007ffff296af09 in dlopen_doit (a=a@entry=0x7fffffffc520) at dlopen.c:66
#9  0x00007ffff7de7564 in _dl_catch_error (objname=0xc59cb0, errstring=0xc59cb8, mallocedp=0xc59ca8, operate=0x7ffff296aeb0 <dlopen_doit>, args=0x7fffffffc520) at dl-error.c:187
#10 0x00007ffff296b571 in _dlerror_run (operate=operate@entry=0x7ffff296aeb0 <dlopen_doit>, args=args@entry=0x7fffffffc520) at dlerror.c:163
#11 0x00007ffff296afa1 in __dlopen (file=<optimized out>, mode=<optimized out>) at dlopen.c:87
#12 0x00007ffff6a5b73d in ?? () from /home/asomerville/work/knight/extinstall/lib/libQt5Core.so.5
#13 0x00007ffff6a54785 in ?? () from /home/asomerville/work/knight/extinstall/lib/libQt5Core.so.5
#14 0x00007ffff6a4a9ce in QFactoryLoader::instance(int) const () from /home/asomerville/work/knight/extinstall/lib/libQt5Core.so.5
#15 0x00007ffff12142a1 in QPlatformThemeFactory::create(QString const&, QString const&) () from /home/asomerville/work/knight/extinstall/lib/libQt5Gui.so.5
#16 0x00007ffff121fb78 in QGuiApplicationPrivate::createPlatformIntegration() () from /home/asomerville/work/knight/extinstall/lib/libQt5Gui.so.5
#17 0x00007ffff122054d in QGuiApplicationPrivate::createEventDispatcher() () from /home/asomerville/work/knight/extinstall/lib/libQt5Gui.so.5
#18 0x00007ffff6a66c29 in QCoreApplicationPrivate::init() () from /home/asomerville/work/knight/extinstall/lib/libQt5Core.so.5
#19 0x00007ffff122229e in QGuiApplicationPrivate::init() () from /home/asomerville/work/knight/extinstall/lib/libQt5Gui.so.5
#20 0x00007ffff49357e9 in QApplicationPrivate::init() () from /home/asomerville/work/knight/extinstall/lib/libQt5Widgets.so.5
#21 0x00007ffff721beba in gazebo::gui::load() () from /home/asomerville/work/knight/extinstall/lib/libgazebo_gui.so.9
#22 0x00007ffff721c0e4 in gazebo::gui::run(int, char**) () from /home/asomerville/work/knight/extinstall/lib/libgazebo_gui.so.9
#23 0x000000000040295c in ?? ()
#24 0x00007ffff54e1830 in __libc_start_main (main=0x402930, argc=1, argv=0x7fffffffcf48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffcf38)
    at ../csu/libc-start.c:291
#25 0x0000000000402bf9 in _start ()

[anandolee]

3.4 is too old, wondering if it still an issue for our new version?

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