From 8b0d77f13192678019f07cbc6b3338d6d91f1cf4 Mon Sep 17 00:00:00 2001
From: Cong Wang <amwang@redhat.com>
Date: Wed, 3 Jul 2013 15:01:12 -0700
Subject: [PATCH] block/compat_ioctl.c: do not leak info to user-space

There is a hole in struct hd_geometry, so we have to zero the struct on
stack before copying it to user-space.

Signed-off-by: Cong Wang <amwang@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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