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(parent: 6c65bb5) | patch
mtd: Disable slram and phram when locked down
authorBen Hutchings <ben@decadent.org.uk>
Thu, 2 Jun 2016 23:48:39 +0000 (00:48 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Fri, 22 Dec 2017 14:12:23 +0000 (14:12 +0000)
commit7b0ce2d0132a254dfdefd14ad25e21ddaff5aef7
tree60a7136d694bdb3f97b2499f67eb859a124d30a1tree | snapshot
parent6c65bb5d66c4db67b7b75df200cb6a6932635fe5commit | diff
mtd: Disable slram and phram when locked down

The slram and phram drivers both allow mapping regions of physical
address space such that they can then be read and written by userland
through the MTD interface.  This is probably usable to manipulate
hardware into overwriting kernel code on many systems.  Prevent that
if locked down.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Gbp-Pq: Topic features/all/lockdown
Gbp-Pq: Name mtd-disable-slram-and-phram-when-locked-down.patch
drivers/mtd/devices/phram.c diff | blob | history
drivers/mtd/devices/slram.c diff | blob | history
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