[PATCH v2 0/2] Add bounds check for Hotplugged memory

From: Alastair D'Silva
Date: Mon Sep 16 2019 - 02:07:43 EST


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:
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 | 8 ++++++++
3 files changed, 21 insertions(+), 1 deletion(-)

--
2.21.0