[Bug 1168526] Re: race condition causing lxc to not detect container init process exit

[Serge Hallyn]

It does seem like this must be a kernel bug in epoll+signalfd (or a hard
to spot misuse thereof in lxc).

When I instrument the signal_handler which is executed when epoll_wait
returns a signalfd event, I do get a sigchld for the very first task
which is spawned (a test to see if kernel supports pidns reboot), but do
not get one for the container init - which becomes <defunct> and
therefore clearly did in fact send a sigchld.

I'll send my tiny patch upstream, and test on other kernels for
comparison.

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to lxc in Ubuntu.
https://bugs.launchpad.net/bugs/1168526

Title:
  race condition causing lxc to not detect container init process exit

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1168526/+subscriptions