Paul E. McKenney <[email protected]> wrote:
>On Thu, Oct 23, 2014 at 09:48:34PM -0700, Jay Vosburgh wrote:
>> Paul E. McKenney <[email protected]> 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, [email protected]
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