Linus Torvalds a08ebda97e memblock: fix crash when reserved memory is not added to memory
When CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, the initialization of
 reserved pages may cause access of NODE_DATA() with invalid nid and crash.
 
 Add a fall back to early_pfn_to_nid() in memmap_init_reserved_pages() to
 ensure a valid node id is always passed to init_reserved_page().
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Merge tag 'fixes-2024-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock

Pull memblock fix from Mike Rapoport:
 "Fix crash when reserved memory is not added to memory.

  When CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, the initialization
  of reserved pages may cause access of NODE_DATA() with invalid nid and
  crash.

  Add a fall back to early_pfn_to_nid() in memmap_init_reserved_pages()
  to ensure a valid node id is always passed to init_reserved_page()"

* tag 'fixes-2024-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  memblock: fix crash when reserved memory is not added to memory
2024-01-28 09:41:39 -08:00
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