From 935299e1f769a91948a9f66be654024d6b1f204d Mon Sep 17 00:00:00 2001
From: Grazvydas Ignotas <notasas@gmail.com>
Date: Sun, 8 Feb 2015 04:05:06 +0200
Subject: [PATCH] mm: actually remap enough memory

For whatever reason, generic_access_phys() only remaps one page, but
actually allows to access arbitrary size. It's quite easy to trigger
large reads, like printing out large structure with gdb, which leads to
a crash. Fix it by remapping correct size.

Fixes: 28b2ee20c7cb ("access_process_vm device memory infrastructure")
Cc: stable@vger.kernel.org
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
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