On Thu 23-08-18 07:16:34, Mikulas Patocka wrote: > > > On Thu, 23 Aug 2018, Michal Hocko wrote: > > > On Thu 23-08-18 07:02:37, Mikulas Patocka wrote: > > [...] > > > This crash is not from -ENOENT. It crashes because page->compound_head is > > > 0xffffffffffffffff (see below). > > > > > > If I enable CONFIG_DEBUG_VM, I also get VM_BUG. > > > > This smells like the struct page is not initialized properly. How is > > this memory range added? I mean is it brought up by the memory hotplug > > or during the boot? > > During the boot. There's not hotplug. Do you have any trail where the memory range is registered from? -- Michal Hocko SUSE Labs
