Re: [Xen-devel] [PATCH 00/12] libxl: fork: SIGCHLD flexibility

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Jim Fehlig writes ("Re: [Xen-devel] [PATCH 00/12] libxl: fork: SIGCHLD 
flexibility"):
> I let this run over the weekend and today noticed libvirtd was deadlocked

I have just retested xl with:
  * my 3-patch 4.4 fixes series
  * v2 of my fork series
  * the extra mutex patch "libxl: fork: Fixup SIGCHLD sharing"
  * "13/12" and "14/12" just posted
and it WFM.

Of course I don't have the same setup as Jim.

Jim: if it's not too much trouble, I'd appreciate it if you could try
that combination.

For your convenience you can find a git branch of it at
  
http://xenbits.xen.org/gitweb/?p=people/iwj/xen.git;a=shortlog;h=refs/tags/wip.enumerate-pids-v2.1
aka
  git://xenbits.xen.org/people/iwj/xen.git#wip.enumerate-pids-v2.1

A useful stress test would be to occasionally run something like
   while true; do kill -CHLD <pid of libvirt process>; done
while it's busy.

Ian.

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