Messages in this thread | | | From | Jay Vosburgh <> | Subject | Re: localed stuck in recent 3.18 git in copy_net_ns? | Date | Fri, 24 Oct 2014 11:20:11 -0700 |
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Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:
>On Thu, Oct 23, 2014 at 09:48:34PM -0700, Jay Vosburgh wrote: >> Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote: [...] >> >Either way, my patch assumed that 39953dfd4007 (rcu: Avoid misordering in >> >__call_rcu_nocb_enqueue()) would work and that 1772947bd012 (rcu: Handle >> >NOCB callbacks from irq-disabled idle code) would fail. Is that the case? >> >If not, could you please bisect the commits between 11ed7f934cb8 (rcu: >> >Make nocb leader kthreads process pending callbacks after spawning) >> >and c847f14217d5 (rcu: Avoid misordering in nocb_leader_wait())? >> >> Just a note to add that I am also reliably inducing what appears >> to be this issue on a current -net tree, when configuring openvswitch >> via script. I am available to test patches or bisect tomorrow (Friday) >> US time if needed. > >Thank you, Jay! Could you please check to see if reverting this commit >fixes things for you? > >35ce7f29a44a rcu: Create rcuo kthreads only for onlined CPUs > >Reverting is not a long-term fix, as this commit is itself a bug fix, >but would be good to check to see if you are seeing the same thing that >Yanko is. ;-)
Just to confirm what Yanko found, reverting this commit makes the problem go away for me.
-J
--- -Jay Vosburgh, jay.vosburgh@canonical.com
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