Debian Bug report logs - #968703
python3 and python crashes if a specific .inputrc exists

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: J Arun Mani <j.arunmani@protonmail.com>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: python3 and python crashes if a specific .inputrc exists

Date: Thu, 20 Aug 2020 17:15:15 +0530

Package: python3
Version: 3.8.2-3
Severity: important
X-Debbugs-Cc: j.arunmani@protonmail.com

Dear Maintainer,

Content of .inputrc :
  ```
  # Based on Brendan Miller's initial bash .inputrc
  # INSTALL
  # to install, rename this file to just ".inputrc"
  # place this file in your home dir. e.g. ~/.inputrc
  # restart your terminal. Then, bash's keybinding for editing
  # should be like ErgoEmacs.
  # If no key works, try replace all \e to \M-. That's means change Esc to Meta
key.

  set editing-mode emacs
  "\M-j": backward-char
  "\M-l": forward-char
  "\M-u": backward-word
  "\C-M-b": backward-word
  "\M-o": forward-word
  "\C-M-f": forward-word
  "\M-g": kill-line
  "\<S-delete>": kill-line
  "\M-e": backward-kill-word
  "\M-r": kill-word
  "\M-f": delete-char
  "\C-z": undo
  "\<S-delete>": kill-region
  "\M-c": copy-region-as-kill
  "\<S-insertchar>": yank
  "\C-v": yank
  "\C-f": forward-search-history
  "\M-:": reverse-search-history

  ```

With .inputrc of above content in HOME, both python and python3 crash by
segmentation fault on interactive session.
The same happens if any python script takes input from user.
This was thought to be an Ergoemacs issue and a bug report was filed in their
repository. But the repository maintainers suggested reporting it to readline
or / and python package maintainers.

Clearing the contents of .inputrc or renaming the file to some trivial name,
fixes the issue.

Affected usage :
  1. Interactive sessions of python and python3
  2. Scripts that take input from user. (`python3 myScript.py`)
  3. Scripts that process a file and drop to interactive shell. (`python3 -i
myScript.py`)

Example observation :
  ```
  j_arun_mani@mysys:~$ python3
  Python 3.8.5 (default, Aug  2 2020, 15:09:07)
  [GCC 10.2.0] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  >>> <Press Enter>

  Segmentation fault
  ```

Please inform me if any other additional details are required.
Thanks ^_^



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

Kernel: Linux 5.7.0-2-amd64 (SMP w/2 CPU threads)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=en_IN, LC_CTYPE=en_IN (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3 depends on:
ii  libpython3-stdlib  3.8.2-3
ii  python3-minimal    3.8.2-3
ii  python3.8          3.8.5-2

python3 recommends no packages.

Versions of packages python3 suggests:
pn  python3-doc   <none>
pn  python3-tk    <none>
ii  python3-venv  3.8.2-3

-- no debconf information

Message #10 received at 968703-done@bugs.debian.org (full text, mbox, reply):

From: Stefano Rivera <stefanor@debian.org>

To: J Arun Mani <j.arunmani@protonmail.com>, 968703-done@bugs.debian.org

Subject: Re: Bug#968703: python3 and python crashes if a specific .inputrc exists

Date: Sat, 28 Jan 2023 16:24:30 -0400

Hi J (2020.08.20_07:45:15_-0400)

I can't reproduce this with Python 3.11.

If this is still an issue, please file it upstream with Python:
https://github.com/python/cpython/
Unless it's an issue specifically with Python in Debian.

SR

-- 
Stefano Rivera

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