[Mono-list] mono clr via pythonnet: invalid pointer

Daniel Krause madakr at web.de
Sun Jan 22 17:10:12 UTC 2017


Hello,

I installed the current mono-version 4.6.2.16-0xamarin1 and upgraded my
system with `sudo -H apt-get upgrade mono-complete`.
The examples for mono worked (I tested the console example and the winform
example), the clr import from python still gives me errors:

import clr
*** Error in `python3.5': free(): invalid pointer: 0x76011050 ***
Stacktrace:

  at <unknown> <0xffffffff>
  at (wrapper managed-to-native) Python.Runtime.Runtime.Py_Initialize ()
<0x00033>
  at Python.Runtime.Runtime.Initialize () <0x00027>
  at Python.Runtime.PythonEngine.Initialize () <0x0007f>
  at Python.Runtime.PythonEngine.InitExt () <0x0002f>
  at (wrapper runtime-invoke) <Module>.runtime_invoke_intptr
(object,intptr,intptr,intptr) <0x0006f>

Native stacktrace:


Debug info from gdb:

[New LWP 21070]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/
libthread_db.so.1".
__libc_do_syscall () at ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:46
46    ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S: No such file or
directory.
  Id   Target Id         Frame
* 1    Thread 0x76f1c300 (LWP 21069) "python3.5" __libc_do_syscall () at
../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:46
  2    Thread 0x761b1470 (LWP 21070) "Finalizer" __libc_do_syscall () at
../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:46

Thread 2 (Thread 0x761b1470 (LWP 21070)):
#0  __libc_do_syscall () at ../sysdeps/unix/sysv/linux/
arm/libc-do-syscall.S:46
#1  0x76eb2834 in futex_abstimed_wait_cancelable (private=0, abstime=0x0,
expected=1, futex_word=0x76843c78) at ../sysdeps/unix/sysv/linux/
futex-internal.h:205
#2  do_futex_wait (sem=sem at entry=0x76843c78, abstime=0x0) at
sem_waitcommon.c:115
#3  0x76eb2916 in __new_sem_wait_slow (sem=0x76843c78, abstime=0x0) at
sem_waitcommon.c:282
#4  0x76734cc4 in ?? () from /usr/lib/libmonoboehm-2.0.so.1
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 1 (Thread 0x76f1c300 (LWP 21069)):
#0  __libc_do_syscall () at ../sysdeps/unix/sysv/linux/
arm/libc-do-syscall.S:46
#1  0x76eb432a in __waitpid (pid=21071, stat_loc=0x7eb086e4, options=0) at
../sysdeps/unix/sysv/linux/waitpid.c:29
#2  0x76695d08 in ?? () from /usr/lib/libmonoboehm-2.0.so.1

Backtrace stopped: previous frame identical to this frame (corrupt stack?)

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted (core dumped)

2017-01-18 13:37 GMT+01:00 William Ivanski <william.ivanski at gmail.com>:

> Hey, Daniel,
>
> Sorry I didn't ask from which repo you installed mono on your system. I'm
> assuming you installed from Ubuntu repo, which provides mono 4.2 even on
> Ubuntu 16.10.
>
> If you want to try mono 4.6, you may be able to install it on your system
> from official mono repo: http://www.mono-project.
> com/docs/getting-started/install/linux/
>
> Please let me know if it works for you.
>
> Em qua, 18 de jan de 2017 às 10:31, Daniel Krause <madakr at web.de>
> escreveu:
>
>> Hi William,
>>
>> it is good to hear, that Ubuntu 16.10 is working.
>> Unfortunately there is no Ubuntu 16.10 for Raspberry available (or let's
>> say, I did not find it, and I would be happy with the LTS-version...).
>>
>> Pythonnet is compiled from github as on your machine. I am using the same
>> mono-version as the pythonnet project uses for its testing, but on my
>> machine something is not working.
>>
>> You are also using a newer version of mono.
>>
>> Maybe there is a way to upgrade the version of mono on my system to
>> version 4.6.2 to give that a test?
>>
>> Thanks
>> Daniel
>>
>>
>> 2017-01-18 11:56 GMT+01:00 William Ivanski <william.ivanski at gmail.com>:
>>
>> Hi, Andres, Daniel and others,
>>
>> It works, I'm using Kubuntu 16.10 and mono 4.6.2. To run:
>>
>> mono nPython.exe test.py
>>
>> I compiled Python for .NET myself from GitHub repo. You can always toss
>> away the EXE and the DLL, and compile them yourself.
>>
>> Em qua, 18 de jan de 2017 às 03:16, Andres <knocte at gmail.com> escreveu:
>>
>> Daniel, and others, I advice not to consume random binaries from random
>> people on the internet.
>>
>> On Wednesday, January 18, 2017 06:09 AM, William Ivanski wrote:
>> > Please see solution
>> > here: https://drive.google.com/file/d/0B6qR86JfcfthdDNwS2g4V2RFRmc
>> /view?usp=sharing
>> >
>> > It works, I'm using Kubuntu 16.10 and mono 4.6.2. I compiled Python for
>> > .NET myself from GitHub repo.
>> > To run:
>> >
>> > mono nPython.exe test.py
>> >
>> > Em ter, 17 de jan de 2017 às 18:57, Daniel Krause <madakr at web.de
>> > <mailto:madakr at web.de>> escreveu:
>> >
>> >     Hello,
>> >
>> >     I am trying to to use mono from python via pythonnet.
>> >
>> >     My system:
>> >
>> >     *Ubuntu*
>> >
>> >       * Release 16.04.1 LTS (Xenial Xerus) 32-bit
>> >       * Kernel Linux 4.1.19-v7+ armv7l
>> >       * MATE 1.12.1
>> >
>> >     *Hardware*
>> >
>> >       * Memory: 925,8 MiB
>> >       * Processor: ARMv7 Processor rev 4 (v7l) × 4
>> >
>> >     *Mono: *mono-complete (4.2.4.4-0wheezy1)
>> >
>> >     **More information on the system and installed dependencies for
>> >     pythonnet can be found in this thread:
>> >     https://github.com/pythonnet/pythonnet/issues/327
>> >
>> >     The following small test script fails at the first step (importing
>> >     the clr):
>> >     #!/usr/bin/env python3
>> >
>> >     print('import clr')
>> >     import clr
>> >     print('clr imported')
>> >
>> >     if __name__ == '__main__':
>> >         print('main')
>> >         exit(0)
>> >
>> >     It gives the following traceback:
>> >     import clr
>> >     *** Error in `python3.5': free(): invalid pointer: 0x75b92050 ***
>> >     Stacktrace:
>> >
>> >       at <unknown> <0xffffffff>
>> >       at (wrapper managed-to-native)
>> >     Python.Runtime.Runtime.Py_Initialize () <0xffffffff>
>> >       at Python.Runtime.Runtime.Initialize () <0x0002f>
>> >       at Python.Runtime.PythonEngine.Initialize () <0x00093>
>> >       at Python.Runtime.PythonEngine.InitExt () <0x0002f>
>> >       at (wrapper runtime-invoke) <Module>.runtime_invoke_intptr
>> >     (object,intptr,intptr,intptr) <0xffffffff>
>> >
>> >     Native stacktrace:
>> >
>> >
>> >     Debug info from gdb:
>> >
>> >     [New LWP 1901]
>> >     [Thread debugging using libthread_db enabled]
>> >     Using host libthread_db library
>> >     "/lib/arm-linux-gnueabihf/libthread_db.so.1".
>> >     0x76f23454 in __libc_do_syscall () from
>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>> >       Id   Target Id         Frame
>> >     * 1    Thread 0x76f8a300 (LWP 1900) "python3.5" 0x76f23454 in
>> >     __libc_do_syscall () from /lib/arm-linux-gnueabihf/libpthread.so.0
>> >       2    Thread 0x76250470 (LWP 1901) "Finalizer" 0x76f23454 in
>> >     __libc_do_syscall () from /lib/arm-linux-gnueabihf/libpthread.so.0
>> >
>> >     Thread 2 (Thread 0x76250470 (LWP 1901)):
>> >     #0  0x76f23454 in __libc_do_syscall () from
>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>> >     #1  0x76f20834 in do_futex_wait.constprop () from
>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>> >     #2  0x76f20916 in __new_sem_wait_slow.constprop.0 () from
>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>> >     #3  0x767dae84 in mono_sem_wait () from
>> /usr/lib/libmonoboehm-2.0.so.1
>> >     #4  0x767a89a0 in ?? () from /usr/lib/libmonoboehm-2.0.so.1
>> >     Backtrace stopped: previous frame identical to this frame (corrupt
>> >     stack?)
>> >
>> >     Thread 1 (Thread 0x76f8a300 (LWP 1900)):
>> >     #0  0x76f23454 in __libc_do_syscall () from
>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>> >     #1  0x76f2232a in waitpid () from
>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>> >     #2  0x767122bc in ?? () from /usr/lib/libmonoboehm-2.0.so.1
>> >     Backtrace stopped: previous frame identical to this frame (corrupt
>> >     stack?)
>> >
>> >     =================================================================
>> >     Got a SIGABRT while executing native code. This usually indicates
>> >     a fatal error in the mono runtime or one of the native libraries
>> >     used by your application.
>> >     =================================================================
>> >
>> >     Aborted (core dumped)
>> >
>> >     My debugging skills are very poor, anyway, I tried to use valgrind
>> >     to get perhaps a better idea. The output:
>> >     ==2813== Memcheck, a memory error detector
>> >     ==2813== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward
>> et al.
>> >     ==2813== Using Valgrind-3.11.0 and LibVEX; rerun with -h for
>> >     copyright info
>> >     ==2813== Command: python3.5 pythonnet_test.py
>> >     ==2813==
>> >     disInstr(arm): unhandled instruction: 0xF1010200
>> >                      cond=15(0xF) 27:20=16(0x10) 4:4=0 3:0=0(0x0)
>> >     ==2813== valgrind: Unrecognised instruction at address 0x48596f4.
>> >     ==2813==    at 0x48596F4: ??? (in
>> >     /usr/lib/arm-linux-gnueabihf/libarmmem.so)
>> >     ==2813== Your program just tried to execute an instruction that
>> Valgrind
>> >     ==2813== did not recognise.  There are two possible reasons for
>> this.
>> >     ==2813== 1. Your program has a bug and erroneously jumped to a
>> non-code
>> >     ==2813==    location.  If you are running Memcheck and you just saw
>> a
>> >     ==2813==    warning about a bad jump, it's probably your program's
>> >     fault.
>> >     ==2813== 2. The instruction is legitimate but Valgrind doesn't
>> >     handle it,
>> >     ==2813==    i.e. it's Valgrind's fault.  If you think this is the
>> >     case or
>> >     ==2813==    you are not sure, please let us know and we'll try to
>> >     fix it.
>> >     ==2813== Either way, Valgrind will now raise a SIGILL signal which
>> will
>> >     ==2813== probably kill your program.
>> >     ==2813==
>> >     ==2813== Process terminating with default action of signal 4
>> (SIGILL)
>> >     ==2813==  Illegal opcode at address 0x48596F4
>> >     ==2813==    at 0x48596F4: ??? (in
>> >     /usr/lib/arm-linux-gnueabihf/libarmmem.so)
>> >     ==2813==
>> >     ==2813== HEAP SUMMARY:
>> >     ==2813==     in use at exit: 1,088 bytes in 10 blocks
>> >     ==2813==   total heap usage: 62 allocs, 52 frees, 5,692 bytes
>> allocated
>> >     ==2813==
>> >     ==2813== LEAK SUMMARY:
>> >     ==2813==    definitely lost: 0 bytes in 0 blocks
>> >     ==2813==    indirectly lost: 0 bytes in 0 blocks
>> >     ==2813==      possibly lost: 0 bytes in 0 blocks
>> >     ==2813==    still reachable: 1,088 bytes in 10 blocks
>> >     ==2813==         suppressed: 0 bytes in 0 blocks
>> >     ==2813== Rerun with --leak-check=full to see details of leaked
>> memory
>> >     ==2813==
>> >     ==2813== For counts of detected and suppressed errors, rerun with:
>> -v
>> >     ==2813== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0
>> from 0)
>> >     Illegal instruction (core dumped)
>> >
>> >     Both the traceback from python and the output of valgrind are beyond
>> >     my comprehension.
>> >
>> >     Has anyone have an idea, what is wrong, and how to fix it?
>> >
>> >     Thanks
>> >     Daniel
>> >     _______________________________________________
>> >     Mono-list maillist  -  Mono-list at lists.dot.net
>> >     <mailto:Mono-list at lists.dot.net>
>> >     http://lists.dot.net/mailman/listinfo/mono-list
>> >
>> > --
>> >
>> > William Ivanski - Microsoft MVP
>> >
>> >
>> >
>> > _______________________________________________
>> > Mono-list maillist  -  Mono-list at lists.dot.net
>> > http://lists.dot.net/mailman/listinfo/mono-list
>> >
>>
>>
>> _______________________________________________
>> Mono-list maillist  -  Mono-list at lists.dot.net
>> http://lists.dot.net/mailman/listinfo/mono-list
>>
>> --
>>
>> William Ivanski - Microsoft MVP
>>
>> _______________________________________________
>> Mono-list maillist  -  Mono-list at lists.dot.net
>> http://lists.dot.net/mailman/listinfo/mono-list
>>
>>
>> --
>
> William Ivanski - Microsoft MVP
>

2017-01-22 18:07 GMT+01:00 Daniel Krause <madakr at web.de>:

> Hello,
>
> I installed the current mono-version 4.6.2.16-0xamarin1 and upgraded my
> system with `sudo -H apt-get upgrade mono-complete`.
> The examples for mono worked (I tested the console example and the winform
> example), the clr import from python still gives me errors:
>
> import clr
> *** Error in `python3.5': free(): invalid pointer: 0x76011050 ***
> Stacktrace:
>
>   at <unknown> <0xffffffff>
>   at (wrapper managed-to-native) Python.Runtime.Runtime.Py_Initialize ()
> <0x00033>
>   at Python.Runtime.Runtime.Initialize () <0x00027>
>   at Python.Runtime.PythonEngine.Initialize () <0x0007f>
>   at Python.Runtime.PythonEngine.InitExt () <0x0002f>
>   at (wrapper runtime-invoke) <Module>.runtime_invoke_intptr
> (object,intptr,intptr,intptr) <0x0006f>
>
> Native stacktrace:
>
>
> Debug info from gdb:
>
> [New LWP 21070]
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/arm-linux-gnueabihf/
> libthread_db.so.1".
> __libc_do_syscall () at ../sysdeps/unix/sysv/linux/
> arm/libc-do-syscall.S:46
> 46    ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S: No such file or
> directory.
>   Id   Target Id         Frame
> * 1    Thread 0x76f1c300 (LWP 21069) "python3.5" __libc_do_syscall () at
> ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:46
>   2    Thread 0x761b1470 (LWP 21070) "Finalizer" __libc_do_syscall () at
> ../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:46
>
> Thread 2 (Thread 0x761b1470 (LWP 21070)):
> #0  __libc_do_syscall () at ../sysdeps/unix/sysv/linux/
> arm/libc-do-syscall.S:46
> #1  0x76eb2834 in futex_abstimed_wait_cancelable (private=0, abstime=0x0,
> expected=1, futex_word=0x76843c78) at ../sysdeps/unix/sysv/linux/
> futex-internal.h:205
> #2  do_futex_wait (sem=sem at entry=0x76843c78, abstime=0x0) at
> sem_waitcommon.c:115
> #3  0x76eb2916 in __new_sem_wait_slow (sem=0x76843c78, abstime=0x0) at
> sem_waitcommon.c:282
> #4  0x76734cc4 in ?? () from /usr/lib/libmonoboehm-2.0.so.1
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
>
> Thread 1 (Thread 0x76f1c300 (LWP 21069)):
> #0  __libc_do_syscall () at ../sysdeps/unix/sysv/linux/
> arm/libc-do-syscall.S:46
> #1  0x76eb432a in __waitpid (pid=21071, stat_loc=0x7eb086e4, options=0) at
> ../sysdeps/unix/sysv/linux/waitpid.c:29
> #2  0x76695d08 in ?? () from /usr/lib/libmonoboehm-2.0.so.1
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
>
> =================================================================
> Got a SIGABRT while executing native code. This usually indicates
> a fatal error in the mono runtime or one of the native libraries
> used by your application.
> =================================================================
>
> Aborted (core dumped)
>
> 2017-01-18 13:37 GMT+01:00 William Ivanski <william.ivanski at gmail.com>:
>
>> Hey, Daniel,
>>
>> Sorry I didn't ask from which repo you installed mono on your system. I'm
>> assuming you installed from Ubuntu repo, which provides mono 4.2 even on
>> Ubuntu 16.10.
>>
>> If you want to try mono 4.6, you may be able to install it on your system
>> from official mono repo: http://www.mono-project.
>> com/docs/getting-started/install/linux/
>>
>> Please let me know if it works for you.
>>
>> Em qua, 18 de jan de 2017 às 10:31, Daniel Krause <madakr at web.de>
>> escreveu:
>>
>>> Hi William,
>>>
>>> it is good to hear, that Ubuntu 16.10 is working.
>>> Unfortunately there is no Ubuntu 16.10 for Raspberry available (or let's
>>> say, I did not find it, and I would be happy with the LTS-version...).
>>>
>>> Pythonnet is compiled from github as on your machine. I am using the
>>> same mono-version as the pythonnet project uses for its testing, but on my
>>> machine something is not working.
>>>
>>> You are also using a newer version of mono.
>>>
>>> Maybe there is a way to upgrade the version of mono on my system to
>>> version 4.6.2 to give that a test?
>>>
>>> Thanks
>>> Daniel
>>>
>>>
>>> 2017-01-18 11:56 GMT+01:00 William Ivanski <william.ivanski at gmail.com>:
>>>
>>> Hi, Andres, Daniel and others,
>>>
>>> It works, I'm using Kubuntu 16.10 and mono 4.6.2. To run:
>>>
>>> mono nPython.exe test.py
>>>
>>> I compiled Python for .NET myself from GitHub repo. You can always toss
>>> away the EXE and the DLL, and compile them yourself.
>>>
>>> Em qua, 18 de jan de 2017 às 03:16, Andres <knocte at gmail.com> escreveu:
>>>
>>> Daniel, and others, I advice not to consume random binaries from random
>>> people on the internet.
>>>
>>> On Wednesday, January 18, 2017 06:09 AM, William Ivanski wrote:
>>> > Please see solution
>>> > here: https://drive.google.com/file/d/0B6qR86JfcfthdDNwS2g4V2RFRmc
>>> /view?usp=sharing
>>> >
>>> > It works, I'm using Kubuntu 16.10 and mono 4.6.2. I compiled Python for
>>> > .NET myself from GitHub repo.
>>> > To run:
>>> >
>>> > mono nPython.exe test.py
>>> >
>>> > Em ter, 17 de jan de 2017 às 18:57, Daniel Krause <madakr at web.de
>>> > <mailto:madakr at web.de>> escreveu:
>>> >
>>> >     Hello,
>>> >
>>> >     I am trying to to use mono from python via pythonnet.
>>> >
>>> >     My system:
>>> >
>>> >     *Ubuntu*
>>> >
>>> >       * Release 16.04.1 LTS (Xenial Xerus) 32-bit
>>> >       * Kernel Linux 4.1.19-v7+ armv7l
>>> >       * MATE 1.12.1
>>> >
>>> >     *Hardware*
>>> >
>>> >       * Memory: 925,8 MiB
>>> >       * Processor: ARMv7 Processor rev 4 (v7l) × 4
>>> >
>>> >     *Mono: *mono-complete (4.2.4.4-0wheezy1)
>>> >
>>> >     **More information on the system and installed dependencies for
>>> >     pythonnet can be found in this thread:
>>> >     https://github.com/pythonnet/pythonnet/issues/327
>>> >
>>> >     The following small test script fails at the first step (importing
>>> >     the clr):
>>> >     #!/usr/bin/env python3
>>> >
>>> >     print('import clr')
>>> >     import clr
>>> >     print('clr imported')
>>> >
>>> >     if __name__ == '__main__':
>>> >         print('main')
>>> >         exit(0)
>>> >
>>> >     It gives the following traceback:
>>> >     import clr
>>> >     *** Error in `python3.5': free(): invalid pointer: 0x75b92050 ***
>>> >     Stacktrace:
>>> >
>>> >       at <unknown> <0xffffffff>
>>> >       at (wrapper managed-to-native)
>>> >     Python.Runtime.Runtime.Py_Initialize () <0xffffffff>
>>> >       at Python.Runtime.Runtime.Initialize () <0x0002f>
>>> >       at Python.Runtime.PythonEngine.Initialize () <0x00093>
>>> >       at Python.Runtime.PythonEngine.InitExt () <0x0002f>
>>> >       at (wrapper runtime-invoke) <Module>.runtime_invoke_intptr
>>> >     (object,intptr,intptr,intptr) <0xffffffff>
>>> >
>>> >     Native stacktrace:
>>> >
>>> >
>>> >     Debug info from gdb:
>>> >
>>> >     [New LWP 1901]
>>> >     [Thread debugging using libthread_db enabled]
>>> >     Using host libthread_db library
>>> >     "/lib/arm-linux-gnueabihf/libthread_db.so.1".
>>> >     0x76f23454 in __libc_do_syscall () from
>>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>>> >       Id   Target Id         Frame
>>> >     * 1    Thread 0x76f8a300 (LWP 1900) "python3.5" 0x76f23454 in
>>> >     __libc_do_syscall () from /lib/arm-linux-gnueabihf/libpthread.so.0
>>> >       2    Thread 0x76250470 (LWP 1901) "Finalizer" 0x76f23454 in
>>> >     __libc_do_syscall () from /lib/arm-linux-gnueabihf/libpthread.so.0
>>> >
>>> >     Thread 2 (Thread 0x76250470 (LWP 1901)):
>>> >     #0  0x76f23454 in __libc_do_syscall () from
>>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>>> >     #1  0x76f20834 in do_futex_wait.constprop () from
>>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>>> >     #2  0x76f20916 in __new_sem_wait_slow.constprop.0 () from
>>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>>> >     #3  0x767dae84 in mono_sem_wait () from
>>> /usr/lib/libmonoboehm-2.0.so.1
>>> >     #4  0x767a89a0 in ?? () from /usr/lib/libmonoboehm-2.0.so.1
>>> >     Backtrace stopped: previous frame identical to this frame (corrupt
>>> >     stack?)
>>> >
>>> >     Thread 1 (Thread 0x76f8a300 (LWP 1900)):
>>> >     #0  0x76f23454 in __libc_do_syscall () from
>>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>>> >     #1  0x76f2232a in waitpid () from
>>> >     /lib/arm-linux-gnueabihf/libpthread.so.0
>>> >     #2  0x767122bc in ?? () from /usr/lib/libmonoboehm-2.0.so.1
>>> >     Backtrace stopped: previous frame identical to this frame (corrupt
>>> >     stack?)
>>> >
>>> >     =================================================================
>>> >     Got a SIGABRT while executing native code. This usually indicates
>>> >     a fatal error in the mono runtime or one of the native libraries
>>> >     used by your application.
>>> >     =================================================================
>>> >
>>> >     Aborted (core dumped)
>>> >
>>> >     My debugging skills are very poor, anyway, I tried to use valgrind
>>> >     to get perhaps a better idea. The output:
>>> >     ==2813== Memcheck, a memory error detector
>>> >     ==2813== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward
>>> et al.
>>> >     ==2813== Using Valgrind-3.11.0 and LibVEX; rerun with -h for
>>> >     copyright info
>>> >     ==2813== Command: python3.5 pythonnet_test.py
>>> >     ==2813==
>>> >     disInstr(arm): unhandled instruction: 0xF1010200
>>> >                      cond=15(0xF) 27:20=16(0x10) 4:4=0 3:0=0(0x0)
>>> >     ==2813== valgrind: Unrecognised instruction at address 0x48596f4.
>>> >     ==2813==    at 0x48596F4: ??? (in
>>> >     /usr/lib/arm-linux-gnueabihf/libarmmem.so)
>>> >     ==2813== Your program just tried to execute an instruction that
>>> Valgrind
>>> >     ==2813== did not recognise.  There are two possible reasons for
>>> this.
>>> >     ==2813== 1. Your program has a bug and erroneously jumped to a
>>> non-code
>>> >     ==2813==    location.  If you are running Memcheck and you just
>>> saw a
>>> >     ==2813==    warning about a bad jump, it's probably your program's
>>> >     fault.
>>> >     ==2813== 2. The instruction is legitimate but Valgrind doesn't
>>> >     handle it,
>>> >     ==2813==    i.e. it's Valgrind's fault.  If you think this is the
>>> >     case or
>>> >     ==2813==    you are not sure, please let us know and we'll try to
>>> >     fix it.
>>> >     ==2813== Either way, Valgrind will now raise a SIGILL signal which
>>> will
>>> >     ==2813== probably kill your program.
>>> >     ==2813==
>>> >     ==2813== Process terminating with default action of signal 4
>>> (SIGILL)
>>> >     ==2813==  Illegal opcode at address 0x48596F4
>>> >     ==2813==    at 0x48596F4: ??? (in
>>> >     /usr/lib/arm-linux-gnueabihf/libarmmem.so)
>>> >     ==2813==
>>> >     ==2813== HEAP SUMMARY:
>>> >     ==2813==     in use at exit: 1,088 bytes in 10 blocks
>>> >     ==2813==   total heap usage: 62 allocs, 52 frees, 5,692 bytes
>>> allocated
>>> >     ==2813==
>>> >     ==2813== LEAK SUMMARY:
>>> >     ==2813==    definitely lost: 0 bytes in 0 blocks
>>> >     ==2813==    indirectly lost: 0 bytes in 0 blocks
>>> >     ==2813==      possibly lost: 0 bytes in 0 blocks
>>> >     ==2813==    still reachable: 1,088 bytes in 10 blocks
>>> >     ==2813==         suppressed: 0 bytes in 0 blocks
>>> >     ==2813== Rerun with --leak-check=full to see details of leaked
>>> memory
>>> >     ==2813==
>>> >     ==2813== For counts of detected and suppressed errors, rerun with:
>>> -v
>>> >     ==2813== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0
>>> from 0)
>>> >     Illegal instruction (core dumped)
>>> >
>>> >     Both the traceback from python and the output of valgrind are
>>> beyond
>>> >     my comprehension.
>>> >
>>> >     Has anyone have an idea, what is wrong, and how to fix it?
>>> >
>>> >     Thanks
>>> >     Daniel
>>> >     _______________________________________________
>>> >     Mono-list maillist  -  Mono-list at lists.dot.net
>>> >     <mailto:Mono-list at lists.dot.net>
>>> >     http://lists.dot.net/mailman/listinfo/mono-list
>>> >
>>> > --
>>> >
>>> > William Ivanski - Microsoft MVP
>>> >
>>> >
>>> >
>>> > _______________________________________________
>>> > Mono-list maillist  -  Mono-list at lists.dot.net
>>> > http://lists.dot.net/mailman/listinfo/mono-list
>>> >
>>>
>>>
>>> _______________________________________________
>>> Mono-list maillist  -  Mono-list at lists.dot.net
>>> http://lists.dot.net/mailman/listinfo/mono-list
>>>
>>> --
>>>
>>> William Ivanski - Microsoft MVP
>>>
>>> _______________________________________________
>>> Mono-list maillist  -  Mono-list at lists.dot.net
>>> http://lists.dot.net/mailman/listinfo/mono-list
>>>
>>>
>>> --
>>
>> William Ivanski - Microsoft MVP
>>
>
>
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