stress should handle SIGTERM/SIGINT properly

[Petar Maric]

Using Ubuntu 12.04.4 LTS, fully updated.

For this minimal working example:
"""
$ stress --cpu 2 --timeout 1h --quiet &
[1] 10329

$ ps aux | grep stress | grep -v grep
petar 10329 0.0 0.0 7236 420 pts/4 S 04:53 0:00 stress --cpu 2 --timeout 1h --quiet
petar 10330 101 0.0 7236 96 pts/4 R 04:53 0:13 stress --cpu 2 --timeout 1h --quiet
petar 10331 101 0.0 7236 96 pts/4 R 04:53 0:13 stress --cpu 2 --timeout 1h --quiet
"""

I expect the program to end all its processes on SIGTERM:
"""
$ kill -TERM 10329
"""
however, while the main program does exit, it does not end it's children processes:
"""
$ ps aux | grep stress | grep -v grep
petar 10330 99.8 0.0 7236 96 pts/4 R 04:53 3:33 stress --cpu 2 --timeout 1h --quiet
petar 10331 99.8 0.0 7236 96 pts/4 R 04:53 3:33 stress --cpu 2 --timeout 1h --quiet
"""

The same error occurs with SIGINT.

I've created a Docker image based on 'stress' - https://bitbucket.org/petar/docker.cpu_stress_test
This bug is preventing Docker from stopping the container properly (using SIGTERM), and instead killing the entire container after a timeout (using SIGKILL).

[Launchpad Janitor (janitor)]

This bug was fixed in the package stress - 1.0.6-1

---------------
stress (1.0.6-1) unstable; urgency=medium

  * New upstream version 1.0.6. (LP: #1335541)
  * debian/copyright:
      - Converted the last paragraph of the GPL-2 in a comment.
      - Updated packaging copyright years.
      - Updated upstream copyright data.

 -- Joao Eriberto Mota Filho <email address hidden> Tue, 17 Jan 2023 15:18:20 -0300