lkml.org 
[lkml]   [2019]   [Sep]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v4 0/1] Add bounds check for Hotplugged memory
Date
From: Alastair D'Silva <alastair@d-silva.org>

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:
V4:
- Relocate call to __add_pages
- Add a warning when the addressable check fails
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 (1):
memory_hotplug: Add a bounds check to __add_pages

mm/memory_hotplug.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)

--
2.21.0

\
 
 \ /
  Last update: 2019-09-26 03:34    [W:0.102 / U:1.612 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site