[Bug 1631302] Re: System becomes unresponsive when running code with deep-recursion under unprivileged user

[Paul White]

Reassigning bug against perl so someone with more knowledge that I can
look into it further.

I have no idea if this is a bug or not but I can confirm that an Ubuntu
16.10 test system locks up as described.

** Package changed: ubuntu => perl (Ubuntu)

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Title:
  System becomes unresponsive when running code with deep-recursion
  under unprivileged user

Status in perl package in Ubuntu:
  New

Bug description:
  In Ubuntu 16.04 if you run
  perl -e 'sub x { x() }; x()'
  (this commands does a deep recursion, eats all memory)

  under non-root user

  whole system becomes unresponsive, mouse, keyboard does not work.
  Screen does not update when you plug/unplug charger, for example. The
  only way to quit is to press power button and shut down machine.

  Expected bahaviour: Ctrl-C, Ctrl-Alt-Del, Ctrl-Alt-F1, mouse, at least
  something should work.

  Repsoduced on HP Pavilion 16, SSD with encryption, encrypted Swap.
  Reproduced by at least one another person with Ubuntu 16.04 with SSD.

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