This is the follow-up of:
[PATCH v1] mm: Fix access of uninitialized memmaps in fs/proc/page.c
We have multiple places where we might access uninitialized memmaps and
trigger kernel BUGs. Make sure to only access initialized memmaps.
Some of these places got easier to trigger with:
[PATCH v6 00/10] mm/memory_hotplug: Shrink zones before removing memory
As memmaps are now also poisoned when memory is offlined, before it is
actually removed.
v1 -> v2:
- Drop ZONE_DEVICE support from the /proc/k... files as requested by Michal
- Further simplify the code
- Split up into two patches
David Hildenbrand (2):
mm: Don't access uninitialized memmaps in fs/proc/page.c
mm/memory-failure.c: Don't access uninitialized memmaps in
memory_failure()
fs/proc/page.c | 28 ++++++++++++++++------------
mm/memory-failure.c | 14 ++++++++------
2 files changed, 24 insertions(+), 18 deletions(-)
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2.21.0
