tree 323ffab0cc23aaf5f28da7d45db43d5b38bc45e1
parent 9a3baed9103bc413a5e98e13e31cd8ae7c0b5563
author Marc Kleine-Budde <mkl@pengutronix.de> 1480934663 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1481820562 -0800

can: raw: raw_setsockopt: limit number of can_filter that can be set

commit 332b05ca7a438f857c61a3c21a88489a21532364 upstream.

This patch adds a check to limit the number of can_filters that can be
set via setsockopt on CAN_RAW sockets. Otherwise allocations > MAX_ORDER
are not prevented resulting in a warning.

Reference: https://lkml.org/lkml/2016/12/2/230

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>