Ubuntu
autopkgtest package

LXC runner hang forever with leaked processes

Bug #1488359 reported by Martin Pitt
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
autopkgtest (Ubuntu)
Fix Released
High
Martin Pitt

Bug Description

$ adt-run deja-dup --- lxc -s --eatmydata adt-wily

This hangs forever after finishing the package build. In the container there are a lot of leaked dbus-daemon processes; when killing them, the test continues.

Related branches

lp:debian/autopkgtest
Martin Pitt (pitti)
Changed in autopkgtest (Ubuntu):
status: New → In Progress
importance: Undecided → High
assignee: nobody → Martin Pitt (pitti)
Revision history for this message
Martin Pitt (pitti) wrote :

This also happens with the schroot runner. In that case we get a hanging

root 31156 0.0 0.0 0 0 pts/24 Z+ 09:19 0:00 [schroot] <defunct>

while it is "sudo" for LXC (i. e. the auxverb wrapper).

summary: - LXC runner hangs forever with leaked processes
+ LXC/schroot runner hang forever with leaked processes
Revision history for this message
Martin Pitt (pitti) wrote : Re: LXC/schroot runner hang forever with leaked processes

Test cases: http://paste.ubuntu.com/12191033/

Revision history for this message
Martin Pitt (pitti) wrote :

Posted this problem on SO:

http://stackoverflow.com/questions/32345029/shell-clean-up-leaked-background-processes-which-hang-due-to-shared-stdout-stde

Revision history for this message
Martin Pitt (pitti) wrote :

http://anonscm.debian.org/cgit/autopkgtest/autopkgtest.git/commit/?id=6905b11dba provides the same hackish fix for LXC as I previously applied to ssh. This should now be generalized and moved out of the runners into adt-run, so that we avoid making the virt-subprocess and auxverbs unnecessarily complicated and also avoid copy-pasta.

Revision history for this message
Martin Pitt (pitti) wrote :

There is no practical solution for fixing this for schroot -- just fix your test, if you care. :-/ So I'm declaring this as fixed as we have the workaround for LXC now.

summary: - LXC/schroot runner hang forever with leaked processes
+ LXC runner hang forever with leaked processes
Changed in autopkgtest (Ubuntu):
status: In Progress → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package autopkgtest - 3.17.1

---------------
autopkgtest (3.17.1) unstable; urgency=medium

  * Add new private python modules to Makefile, to actually ship them.
  * tests/adt-run: Fix test regression when $ADT_TEST* are not set.

 -- Martin Pitt <email address hidden> Tue, 15 Sep 2015 08:38:54 +0200

Changed in autopkgtest (Ubuntu):
status: Fix Committed → Fix Released
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