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? -- Michal Hocko SUSE Labs
