[Python-modules-team] Bug#886456: python-pip: segfault when running 'pip install --upgrade ...'

[Felix Schulthess]

Package: python-pip
Version: 9.0.1-2
Severity: important

Dear Maintainer,

I was trying to upgrade ansible (which I initially installed with pip).
The result was, that the program segfaulted. I tried this with --user and
without, but it makes no difference.

There is a log and a strace here:

https://en.pastebin.ca/3956033
https://filebin.ca/3nFJW76lWAKu/pip_fail.strace.gz

Sorry, if I am making some mistakes, this is my first bug report.

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.13.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python-pip depends on:
ii  ca-certificates  20170717
ii  python           2.7.14-4
ii  python-pip-whl   9.0.1-2

Versions of packages python-pip recommends:
ii  build-essential    12.4
ii  python-all-dev     2.7.14-4
ii  python-setuptools  38.2.4-2
ii  python-wheel       0.30.0-0.1

python-pip suggests no packages.

-- no debconf information