Re: [PATCH v6 03/10] mm/memory_hotplug: Don't access uninitialized memmaps in shrink_pgdat_span()

On 06.10.19 10:56, David Hildenbrand wrote: > We might use the nid of memmaps that were never initialized. For > example, if the memmap was poisoned, we will crash the kernel in > pfn_to_nid() right now. Let's use the calculated boundaries of the separate > zones instead. This now also avoids

[PATCH v6 03/10] mm/memory_hotplug: Don't access uninitialized memmaps in shrink_pgdat_span()

We might use the nid of memmaps that were never initialized. For example, if the memmap was poisoned, we will crash the kernel in pfn_to_nid() right now. Let's use the calculated boundaries of the separate zones instead. This now also avoids having to iterate over a whole bunch of subsections