From a9868e6e7b807374c3511b42d2ef7b4b0dd8a7e8 Mon Sep 17 00:00:00 2001
From: Ilya Matveychikov <matvejchikov@gmail.com>
Date: Fri, 23 Jun 2017 15:08:49 -0700
Subject: [PATCH] lib/cmdline.c: fix get_options() overflow while parsing
 ranges

commit a91e0f680bcd9e10c253ae8b62462a38bd48f09f upstream.

When using get_options() it's possible to specify a range of numbers,
like 1-100500.  The problem is that it doesn't track array size while
calling internally to get_range() which iterates over the range and
fills the memory with numbers.

Link: http://lkml.kernel.org/r/2613C75C-B04D-4BFF-82A6-12F97BA0F620@gmail.com
Signed-off-by: Ilya V. Matveychikov <matvejchikov@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
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