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(parent: c0efd98) | 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>
Wed, 19 Jun 2019 22:16:58 +0000 (23:16 +0100)
commitb25318837584e70c34046093ed2d323e1d12c74b
tree4e27612eebdad3ff0cffb6ef878d88d2d5506132tree | snapshot
parentc0efd983d4ef26e1f0d0dcbb08829597e3cd98cdcommit | 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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