[PATCH v3 0/2] Add bounds check for Hotplugged memory

["Alastair D'Silva" <alastair@xxxxxxxxxxx>]

From: Alastair D'Silva <alastair@xxxxxxxxxxx>

This series adds bounds checks for hotplugged memory, ensuring that
it is within the physically addressable range (for platforms that
define MAX_(POSSIBLE_)PHYSMEM_BITS.

This allows for early failure, rather than attempting to access
bogus section numbers.

Changelog:
 V3:
   - Perform the addressable check before we take the hotplug lock
 V2:
   - Don't use MAX_POSSIBLE_PHYSMEM_BITS as it's wider that what
     may be available

Alastair D'Silva (2):
  memory_hotplug: Add a bounds check to check_hotplug_memory_range()
  mm: Add a bounds check in devm_memremap_pages()

 include/linux/memory_hotplug.h |  1 +
 mm/memory_hotplug.c            | 13 ++++++++++++-
 mm/memremap.c                  |  5 +++++
 3 files changed, 18 insertions(+), 1 deletion(-)

-- 
2.21.0