Messages in this thread | | | Date | Thu, 31 Aug 2017 14:19:37 +0200 | From | Artem Savkov <> | Subject | Re: possible circular locking dependency mmap_sem/cpu_hotplug_lock.rw_sem |
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On Thu, Aug 31, 2017 at 02:09:51PM +0200, Michal Hocko wrote: > On Thu 31-08-17 13:10:06, Artem Savkov wrote: > > Hi Michal, > > > > On Wed, Aug 30, 2017 at 05:43:15PM +0200, Michal Hocko wrote: > > > The previous patch is insufficient. drain_all_stock can still race with > > > the memory offline callback and the underlying memcg disappear. So we > > > need to be more careful and pin the css on the memcg. This patch > > > instead... > > > > Tried this on top of rc7 and it does fix the splat for me. > > Thanks for testing! Can I assume your Tested-by?
Didn't test much more than the case that was causing it, but yes.
Reported-and-tested-by: Artem Savkov <asavkov@redhat.com>
-- Regards, Artem
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