diff options
| author | Andrew Bresticker <abrestic@chromium.org> | 2016-02-15 09:19:49 +0100 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 10:58:53 +0200 |
| commit | 689c2c4b7aa0c9b67337fbb241a428ec81636b62 (patch) | |
| tree | a3c4b8425b9a5c2ac34412b0803bd26132e49247 /include | |
| parent | 61585a7a668ba8dd4bb01ae28c78887524eef70f (diff) | |
pstore/ram: Use memcpy_fromio() to save old buffer
commit d771fdf94180de2bd811ac90cba75f0f346abf8d upstream.
The ramoops buffer may be mapped as either I/O memory or uncached
memory. On ARM64, this results in a device-type (strongly-ordered)
mapping. Since unnaligned accesses to device-type memory will
generate an alignment fault (regardless of whether or not strict
alignment checking is enabled), it is not safe to use memcpy().
memcpy_fromio() is guaranteed to only use aligned accesses, so use
that instead.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Enric Balletbo Serra <enric.balletbo@collabora.com>
Reviewed-by: Puneet Kumar <puneetster@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions