On Fri 17-04-20 15:12:47, Andrew Morton wrote: > On Thu, 16 Apr 2020 09:34:17 +0200 David Hildenbrand <david@xxxxxxxxxx> wrote: > > > Without CONFIG_PREEMPT, it can happen that we get soft lockups detected, > > e.g., while booting up. > > > > ... > > > > --- a/mm/page_alloc.c > > +++ b/mm/page_alloc.c > > @@ -1607,6 +1607,7 @@ void set_zone_contiguous(struct zone *zone) > > if (!__pageblock_pfn_to_page(block_start_pfn, > > block_end_pfn, zone)) > > return; > > + cond_resched(); > > } > > > > /* We confirm that there is no hole */ > > I added cc:stable to this one. Please let me know if that wasn't a > good idea. Really large memory setups tend to run on distribution kernels so backporting to old kernels doesn't really harm. -- Michal Hocko SUSE Labs
