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'helper exited' + segfault #223

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tedder opened this issue Sep 24, 2017 · 13 comments
Closed

'helper exited' + segfault #223

tedder opened this issue Sep 24, 2017 · 13 comments

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@tedder
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tedder commented Sep 24, 2017

Pi Zero (non-W) with a Redbear IOT PHat. 'lescan' works, but bluepy doesn't. I used the example in Scanner and ran it with sudo. Here's the tail of the stack:

  File "/usr/local/lib/python3.5/dist-packages/bluepy/btle.py", line 272, in _mgmtCmd
    rsp = self._waitResp('mgmt')
  File "/usr/local/lib/python3.5/dist-packages/bluepy/btle.py", line 304, in _waitResp
    raise BTLEException(BTLEException.INTERNAL_ERROR, "Helper exited")
bluepy.btle.BTLEException: Helper exited

I wondered if bluepy-helper was to blame, so I tried running it directly:

$ sudo /usr/local/lib/python3.5/dist-packages/bluepy/bluepy-helper
Segmentation fault

I tried installations on python3 and python2. How can I help debug this?
@IanHarvey
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First question is where the bluepy-helper itself came from...

  • I'm assuming this is the latest release (1.1.2). If not, can you try reinstalling this?
  • Did you install it with pip install or by running a setup.py on the source?
  • Can you do a ls -l /usr/local/lib/python3.5/dist-packages/bluepy/bluepy-helper and file /usr/local/lib/python3.5/dist-packages/bluepy/bluepy-helper and post the results?

Thanks
Ian

@tedder
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tedder commented Sep 24, 2017 •
edited
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Thanks. I'm glad you replied so we can step through this.

  • Latest release.
  • Used pip install. I know it compiled the bluepy-helper because I had to install libboost and such as it failed the first time around.
  • below. I manually inserted line breaks in the file output.
$ ls -l /usr/local/lib/python3.5/dist-packages/bluepy/bluepy-helper
-rwxr-xr-x 1 root staff 648888 Sep 24 03:04 /usr/local/lib/python3.5/dist-packages/bluepy/bluepy-helper
$ file /usr/local/lib/python3.5/dist-packages/bluepy/bluepy-helper
/usr/local/lib/python3.5/dist-packages/bluepy/bluepy-helper: ELF 32-bit LSB executable,
ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3,
for GNU/Linux 3.2.0, BuildID[sha1]=9efb6c5c9af3ae8e284ffbc77bf3820a355d7d97,
not stripped

@IanHarvey
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Something weird is going on if you needed libboost - there's no C++ in bluepy-helper. I don't suppose you still have (or can reproduce) the log of the build failing without it? On a Pi I've been building things with the standard gcc 4.9.2 which comes with Raspbian Jessie - what are you using?

Something else to try is finding out whether the pre-built bluepy-helper works on your system. If you can, go to https://pypi.org/project/bluepy/#files and manually download bluepy-1.1.2-cp34-cp34m-linux_armv7l.whl. You can then unzip it - it's literally just a zipfile - and you should find bluepy-1.1.2.data/purelib/bluepy/bluepy-helper. It's a standalone executable so there's nothing Python 3.5-specific about it - if it runs you could just move it into place and it should be fine.

Thanks
Ian

@bjoernhoefer
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Hi,

I ran into the same error - and fixed it with the download of the bluepy-helper.

Additional Detail - I installed it on a raspberry pi 3 and a raspberry pi zero - and it only failed on the zero... maybe a coincidence

Thanks for the solution.

@ukBaz
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ukBaz commented Oct 1, 2017

It might not be a coincidence that it worked on the RPi3 and failed on the RPi Zero W.

As you can see from: https://en.wikipedia.org/wiki/Raspberry_Pi
Those two boards have different architectures on them (ARM8 vs ARM6) so will need different wheels

@IanHarvey
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So I've managed to reproduce this on a Zero W, using latest Raspbian Stretch.

It's well weird - pip install appears to want to build it from source, but the thing it builds and installs is corrupted in some way I haven't yet fathomed. Building it from GitHub source, on the same box, with setup.py build seems to make a working bluepy-helper.

Maybe there's some way in which "installing" it from the build directory to /usr/local/lib is borking the file? More research needed...

@ChristianKuehnel
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Hey guys,

I have a similar problem but on a amd64 machine:

  • I installed bluepy 1.1.2: sudo pip3 install bluepy
  • When I started bluepy-helper from the command line, I got this error saying the executable is broken:

bash: ./bluepy-helper.corrupted: Kann die Binärdatei nicht ausführen: Fehler im Format der
Programmdatei

  • After running sudo make in the installation directory manually, it worked fine.
  • When looking at readelf bluepy-helper it tells me that I'm running the version for ARM v7, which obviously does not work for my amd64 machine:

File Attributes
Tag_CPU_name: "7-A"
Tag_CPU_arch: v7

So I guess there is something wrong with the build/installation process and it tries to deploy the ARM v7 binary to all platforms...

I uploaded my 2 executables (broken and working):
executables..tar.gz

@jonsnow1357
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HI all,

I can confirm this bug, on a raspberry pi :(.
As suggested copying bluepy-handler from pypi.org seems to fix it.

I have uninstalled and reinstalled bluepy with '-v' and I have some additional information pasted below that I hope will be useful. Let me know if I can help with something else.

[pi@rpi04 17:26:51]
[~]$ sudo pip -v install bluepy
Converted retries value: Retry(total=5, connect=None, read=None, redirect=None) -> Retry(total=Retry(total=5, connect=None, read=None, redirect=None), connect=None, read=None, redirect=None)
Converted retries value: Retry(total=5, connect=None, read=None, redirect=None) -> Retry(total=Retry(total=5, connect=None, read=None, redirect=None), connect=None, read=None, redirect=None)
Collecting bluepy
  1 location(s) to search for versions of bluepy:
  * https://pypi.python.org/simple/bluepy/
  Getting page https://pypi.python.org/simple/bluepy/
  Looking up "https://pypi.python.org/simple/bluepy/" in the cache
  No cache entry available
  Starting new HTTPS connection (1): pypi.python.org
  https://pypi.python.org:443 "GET /simple/bluepy/ HTTP/1.1" 200 816
  Updating cache with response from "https://pypi.python.org/simple/bluepy/"
  Caching b/c date exists and max-age > 0
  Analyzing links from page https://pypi.python.org/simple/bluepy/
    Found link https://pypi.python.org/packages/13/4f/b2f99f8c5b14ea1d9b2ff311fe0d232affc5a60a2c204825daa51703a358/bluepy-1.1.1.tar.gz#md5=037215b3c60e2297b3037c9f6cabafe8 (from https://pypi.python.org/simple/bluepy/), version: 1.1.1
    Found link https://pypi.python.org/packages/2f/5e/b0f10966bf23b98029164d034d3fc474f1f957885e660e48d61fa462a292/bluepy-1.0.5.tar.gz#md5=34c749540cf7b889c1c3d1b040afcdc6 (from https://pypi.python.org/simple/bluepy/), version: 1.0.5
    Skipping link https://pypi.python.org/packages/33/bd/b4ee0fb003917e21b377ec7af53bfad977fcf89f8700868368b000fde13e/bluepy-1.1.2-cp27-cp27mu-linux_armv7l.whl#md5=68b3847da7d2212b1267a0f6ee13bd56 (from https://pypi.python.org/simple/bluepy/); it is not compatible with this Python
    Skipping link https://pypi.python.org/packages/75/59/e26c0ce5d184e6172e323c1db882bc5b5e28ed20e34d08f2be90341f75b7/bluepy-1.1.2-cp34-cp34m-linux_armv7l.whl#md5=834c23d93af7554ff2c00bb4add29e52 (from https://pypi.python.org/simple/bluepy/); it is not compatible with this Python
    Found link https://pypi.python.org/packages/a2/23/38f57b2f84f99d9aa56efd20fbd0189ceb202f7a48028f634644b8524356/bluepy-1.0.3.tar.gz#md5=59abc628b1d851e18db8d11dfd20d9d2 (from https://pypi.python.org/simple/bluepy/), version: 1.0.3
    Found link https://pypi.python.org/packages/b7/6f/99900cbffd7714e75e433ad1ea594f6d0f9cdf9c8bbaffdfef3c5cbf8500/bluepy-1.0.4.tar.gz#md5=6c089943b2bd23c1e12262b28a872c71 (from https://pypi.python.org/simple/bluepy/), version: 1.0.4
    Found link https://pypi.python.org/packages/ea/45/911b293581760e04212fa1c3d4412ded8faa4b6c4e8e39acc4e1f18ae286/bluepy-1.0.2.tar.gz#md5=be53d5848d697ede54dfcca271313695 (from https://pypi.python.org/simple/bluepy/), version: 1.0.2
    Found link https://pypi.python.org/packages/f1/fa/4830ec2ab95baa0201151bf18d5c031d94c520bd05ffdf692573a5261fe3/bluepy-1.1.2.tar.gz#md5=65ef76a2b8538be6fb909e668e9354af (from https://pypi.python.org/simple/bluepy/), version: 1.1.2
    Found link https://pypi.python.org/packages/fe/1c/73f960e8a1e378e390139d0a81f6d8388f70b7eea79bb711910841911d0e/bluepy-1.1.0.tar.gz#md5=c72f0adde853149f6c60b6106ae3a4f5 (from https://pypi.python.org/simple/bluepy/), version: 1.1.0
  Using version 1.1.2 (newest of versions: 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.1.0, 1.1.1, 1.1.2)
  Looking up "https://pypi.python.org/packages/f1/fa/4830ec2ab95baa0201151bf18d5c031d94c520bd05ffdf692573a5261fe3/bluepy-1.1.2.tar.gz" in the cache
  No cache entry available
  https://pypi.python.org:443 "GET /packages/f1/fa/4830ec2ab95baa0201151bf18d5c031d94c520bd05ffdf692573a5261fe3/bluepy-1.1.2.tar.gz HTTP/1.1" 200 497925
  Downloading bluepy-1.1.2.tar.gz (497kB)
  Downloading from URL https://pypi.python.org/packages/f1/fa/4830ec2ab95baa0201151bf18d5c031d94c520bd05ffdf692573a5261fe3/bluepy-1.1.2.tar.gz#md5=65ef76a2b8538be6fb909e668e9354af (from https://pypi.python.org/simple/bluepy/)
    98% |############################### | 491kB 479kB/s eta 0:00:01  Updating cache with response from "https://pypi.python.org/packages/f1/fa/4830ec2ab95baa0201151bf18d5c031d94c520bd05ffdf692573a5261fe3/bluepy-1.1.2.tar.gz"
  Caching due to etag
    100% |################################| 501kB 81kB/s
  Running setup.py (path:/tmp/pip-build-7JtwM6/bluepy/setup.py) egg_info for package bluepy
    Running command python setup.py egg_info
    running egg_info
    creating pip-egg-info/bluepy.egg-info
    writing pip-egg-info/bluepy.egg-info/PKG-INFO
    writing top-level names to pip-egg-info/bluepy.egg-info/top_level.txt
    writing dependency_links to pip-egg-info/bluepy.egg-info/dependency_links.txt
    writing entry points to pip-egg-info/bluepy.egg-info/entry_points.txt
    writing manifest file 'pip-egg-info/bluepy.egg-info/SOURCES.txt'
    reading manifest file 'pip-egg-info/bluepy.egg-info/SOURCES.txt'
    writing manifest file 'pip-egg-info/bluepy.egg-info/SOURCES.txt'
  Source in /tmp/pip-build-7JtwM6/bluepy has version 1.1.2, which satisfies requirement bluepy from https://pypi.python.org/packages/f1/fa/4830ec2ab95baa0201151bf18d5c031d94c520bd05ffdf692573a5261fe3/bluepy-1.1.2.tar.gz#md5=65ef76a2b8538be6fb909e668e9354af
Building wheels for collected packages: bluepy
  Running setup.py bdist_wheel for bluepy ...   Destination directory: /tmp/tmp7aMJqupip-wheel-
  Running command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-7JtwM6/bluepy/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmp7aMJqupip-wheel- --python-tag cp27
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.linux-armv6l-2.7
  creating build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/get_services.py -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/sensortag.py -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/scanner.py -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/thingy52.py -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/blescan.py -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/btle.py -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/__init__.py -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/bluepy-helper -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/uuids.json -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/bluez-src.tgz -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/bluepy-helper.c -> build/lib.linux-armv6l-2.7/bluepy
  copying bluepy/Makefile -> build/lib.linux-armv6l-2.7/bluepy
  installing to build/bdist.linux-armv6l/wheel
  running install
  Working dir is /tmp/pip-build-7JtwM6/bluepy
  execute make -C ./bluepy clean
  execute make -C bluepy -j1
  running install_lib
  creating build/bdist.linux-armv6l
  creating build/bdist.linux-armv6l/wheel
  creating build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data
  creating build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib
  creating build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/Makefile -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/get_services.py -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/sensortag.py -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/scanner.py -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/thingy52.py -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/bluez-src.tgz -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/bluepy-helper.c -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/blescan.py -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/btle.py -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/bluepy-helper -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/uuids.json -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  copying build/lib.linux-armv6l-2.7/bluepy/__init__.py -> build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy
  running install_egg_info
  running egg_info
  writing bluepy.egg-info/PKG-INFO
  writing top-level names to bluepy.egg-info/top_level.txt
  writing dependency_links to bluepy.egg-info/dependency_links.txt
  writing entry points to bluepy.egg-info/entry_points.txt
  reading manifest file 'bluepy.egg-info/SOURCES.txt'
  writing manifest file 'bluepy.egg-info/SOURCES.txt'
  Copying bluepy.egg-info to build/bdist.linux-armv6l/wheel/bluepy-1.1.2.data/purelib/bluepy-1.1.2.egg-info
  running install_scripts
  creating build/bdist.linux-armv6l/wheel/bluepy-1.1.2.dist-info/WHEEL
done
  Stored in directory: /root/.cache/pip/wheels/0b/c0/8a/af9c1567bee8b7ef3ce1136bb917f75e45e2d3b89f35328111
  Removing source in /tmp/pip-build-7JtwM6/bluepy
Successfully built bluepy
Installing collected packages: bluepy

  Creating /usr/local/bin
  changing mode of /usr/local/bin/blescan to 755
  changing mode of /usr/local/bin/thingy52 to 755
  changing mode of /usr/local/bin/sensortag to 755
Successfully installed bluepy-1.1.2
Cleaning up...
[pi@rpi04 17:31:02]
[~]$ sudo ls -l /usr/local/lib/python2.7/dist-packages/bluepy/
total 1128
-rw-r--r-- 1 root staff   1333 Oct 19 17:30 Makefile
-rw-r--r-- 1 root staff    150 Oct 19 17:30 __init__.py
-rw-r--r-- 1 root staff    400 Oct 19 17:31 __init__.pyc
-rw-r--r-- 1 root staff   4698 Oct 19 17:30 blescan.py
-rw-r--r-- 1 root staff   5155 Oct 19 17:31 blescan.pyc
-rwxr-xr-x 1 root staff 648888 Oct 19 17:30 bluepy-helper
-rw-r--r-- 1 root staff  49514 Oct 19 17:30 bluepy-helper.c
-rw-r--r-- 1 root staff 178249 Oct 19 17:30 bluez-src.tgz
-rw-r--r-- 1 root staff  26267 Oct 19 17:30 btle.py
-rw-r--r-- 1 root staff  31860 Oct 19 17:31 btle.pyc
-rw-r--r-- 1 root staff   5760 Oct 19 17:30 get_services.py
-rw-r--r-- 1 root staff   7916 Oct 19 17:31 get_services.pyc
-rw-r--r-- 1 root staff    514 Oct 19 17:30 scanner.py
-rw-r--r-- 1 root staff   1152 Oct 19 17:31 scanner.pyc
-rw-r--r-- 1 root staff  16504 Oct 19 17:30 sensortag.py
-rw-r--r-- 1 root staff  24968 Oct 19 17:31 sensortag.pyc
-rw-r--r-- 1 root staff  35775 Oct 19 17:30 thingy52.py
-rw-r--r-- 1 root staff  31147 Oct 19 17:31 thingy52.pyc
-rw-r--r-- 1 root staff  35010 Oct 19 17:30 uuids.json
[pi@rpi04 17:32:32]
[~]$ sudo file /usr/local/lib/python2.7/dist-packages/bluepy/bluepy-helper
/usr/local/lib/python2.7/dist-packages/bluepy/bluepy-helper: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 3.2.0, BuildID[sha1]=9efb6c5c9af3ae8e284ffbc77bf3820a355d7d97, not stripped
[pi@rpi04 17:32:51]
[~]$ sudo /usr/local/lib/python2.7/dist-packages/bluepy/bluepy-helper
Segmentation fault
[pi@rpi04 17:33:01]



[~/tmp]$ readelf -h bluepy-1.1.2.data/purelib/bluepy/bluepy-helper
ELF Header:
  Magic:   7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           ARM
  Version:                           0x1
  Entry point address:               0x11e98
  Start of program headers:          52 (bytes into file)
  Start of section headers:          609324 (bytes into file)
  Flags:                             0x5000402, Version5 EABI, hard-float ABI, 
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         8
  Size of section headers:           40 (bytes)
  Number of section headers:         39
  Section header string table index: 36
[pi@rpi04 17:37:42]
[~/tmp]$ sudo readelf -h /usr/local/lib/python2.7/dist-packages/bluepy/bluepy-helper
ELF Header:
  Magic:   7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           ARM
  Version:                           0x1
  Entry point address:               0x12049
  Start of program headers:          52 (bytes into file)
  Start of section headers:          647328 (bytes into file)
  Flags:                             0x5000400, Version5 EABI, hard-float ABI
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         9
  Size of section headers:           40 (bytes)
  Number of section headers:         39
  Section header string table index: 36

@IanHarvey IanHarvey mentioned this issue Oct 22, 2017
Closed
@IanHarvey
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I think the issue is ARM architecture-related. I've just tried the 'bad' executable built on my Pi Zero in a Pi 3, and it runs fine. The problem now is how to debug what's happening when pip install does its job - the only real variables are the versions of gcc and pkg-config which are running, or something weird in the environment.

@IanHarvey
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Aha. It seems that the "source" tarball for 1.1.2 actually contains the bluepy-helper executable in it, and for reasons I fail to understand, make -C ./bluepy clean is not removing it (or it has already been installed before make gets there...)

@IanHarvey
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I have made a new release (1.1.4) which (for me) fixes the problem.

More details are discussed in related issue #158.

Thanks
Ian

@IanHarvey IanHarvey mentioned this issue Nov 13, 2017
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@ChristianKuehnel ChristianKuehnel mentioned this issue Nov 13, 2017
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@tedder
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tedder commented Nov 13, 2017

replied on #158. Closing.

@tedder tedder closed this as completed Nov 13, 2017
@jonsnow1357
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just updated to 1.1.4 on my raspberry pi and it seems to work.

Thank you :)

@K3YOMI K3YOMI mentioned this issue Feb 17, 2024
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@tedder @bjoernhoefer @IanHarvey @jonsnow1357 @ukBaz @ChristianKuehnel