From: Eric W. Biederman <ebiederm@xmission.com>
Date: Fri, 8 May 2015 21:36:50 +0000 (-0500)
Subject: mnt: Fix fs_fully_visible to verify the root directory is visible
X-Git-Tag: omap-for-v4.2/wakeirq-drivers-v2~10^2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e96c1b0e0f495c5a7450dc4aa7c9a24ba4305bd;p=pandora-kernel.git

mnt: Fix fs_fully_visible to verify the root directory is visible

This fixes a dumb bug in fs_fully_visible that allows proc or sys to
be mounted if there is a bind mount of part of /proc/ or /sys/ visible.

Cc: stable@vger.kernel.org
Reported-by: Eric Windisch <ewindisch@docker.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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