On 10/1/19 1:49 PM, Alexander Duyck wrote: > So it looks like v12 still has issues. I'm pretty sure you should be using > spin_lock_irq(), not spin_lock() in page_reporting.c to avoid the > possibility of an IRQ firing and causing lock recursion on the zone lock. Lockdep should make all of this a lot easier to find. Is it being used?