[Bug 406397] Re: init: job stuck with expect fork/daemon when parent reaps child

[Peter Júnoš]

According to Mark Hurenkamp's comment, severity of this bug should be set to Critical.
Image your very important app got the same PID as non-existent process had.
Then Upstart:
- causes data corruption - imagine you are editing your photos and something kills your application during rewrite of a photo
- severely affects applications beyond the package responsible for the root cause - any application can be killed ("crashing") randomly

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https://bugs.launchpad.net/bugs/406397

Title:
  init: job stuck with expect fork/daemon when parent reaps child

Status in Upstart:
  Triaged
Status in “aiccu” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  Invalid
Status in PLD Linux Distribution:
  New

Bug description:
  Hi

  Wrong use of the expect fork stanza can create job with status
    job stop/killled, process nnn
  without any process nnn running on the system.

  As an example the following avahi.conf should have used
  "expect daemon", but will instead create a stuck job.

  stop on stopping dbus-system
  respawn
  expect fork
  exec avahi-daemon -D

  /Emil Renner Berthing

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