On Mon 26-08-19 12:10:06, David Hildenbrand wrote: > Working on virtio-mem, I was able to trigger a kernel BUG (with debug > options enabled) when removing memory that was never onlined. I was able > to reproduce with DIMMs. As far as I can see the same can also happen > without debug configs enabled, if we're unlucky and the uninitialized > memmap contains selected garbage . Could you be more specific please? -- Michal Hocko SUSE Labs