[AMD Linux] No such file or directory: '/proc/3790/fd/3'

[chfw]

Platform

• Ubuntu 16.04.6 LTS
• 5.6.5
• pypy 2.7

Bug description

Failed to read link path. And you can reproduce it with the following unit test script:

https://github.com/pyexcel/pyexcel/blob/dev/tests/test_bug_fixes.py#L243

git clone https://github.com/pyexcel/pyexcel
cd pyexcel
pip install -r requirements.txt -r tests/requirements.txt
nosettests tests/test_bug_fixes.py

And 5.6.3 works without problem.

** Alternative way of bug reproduction **

You can choose to fork pyexcel and trigger the builds on your fork. and you can tweek psutil versions and test the builds.

traceback message (if any)

code to reproduce the problem (if any)
  File "/home/travis/virtualenv/pypy2.7-6.0.0/site-packages/psutil/__init__.py", line 1255, in open_files
572    return self._proc.open_files()
573  File "/home/travis/virtualenv/pypy2.7-6.0.0/site-packages/psutil/_pslinux.py", line 1517, in wrapper
574    return fun(self, *args, **kwargs)
575  File "/home/travis/virtualenv/pypy2.7-6.0.0/site-packages/psutil/_pslinux.py", line 2030, in open_files
576    path = readlink(file)
577  File "/home/travis/virtualenv/pypy2.7-6.0.0/site-packages/psutil/_pslinux.py", line 221, in readlink
578    path = os.readlink(path)
579OSError: [Errno 2] No such file or directory: '/proc/3790/fd/3'

Test results

I am sorry that I could help with unit tests
output of `python -c psutil.tests` (failures only, not full result)

{ you may want to do this in order to discover other issues affecting your platform }
{ if failures look unrelated with the issue at hand open another ticket }

More details on failed:
https://travis-ci.org/pyexcel/pyexcel/jobs/608999052

The same build passed with psutil version is 5.6.3:
https://travis-ci.org/pyexcel/pyexcel/jobs/600983900

[giampaolo]

Closing as duplicate of #1659.