HID: core: prevent out-of-bound readings
authorBenjamin Tissoires <benjamin.tissoires@redhat.com>
Tue, 19 Jan 2016 11:34:58 +0000 (12:34 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Thu, 23 Feb 2017 03:51:04 +0000 (03:51 +0000)
commit 50220dead1650609206efe91f0cc116132d59b3f upstream.

Plugging a Logitech DJ receiver with KASAN activated raises a bunch of
out-of-bound readings.

The fields are allocated up to MAX_USAGE, meaning that potentially, we do
not have enough fields to fit the incoming values.
Add checks and silence KASAN.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

No differences found