From 0040e606e35a0db80fc3fac04ccc7c7176a8e2b1 Mon Sep 17 00:00:00 2001
From: Christoph Jaeger <christophjaeger@linux.com>
Date: Sat, 12 Apr 2014 13:33:13 +0200
Subject: [PATCH] btrfs: fix use-after-free in mount_subvol()

Pointer 'newargs' is used after the memory that it points to has already
been freed.

Picked up by Coverity - CID 1201425.

Fixes: 0723a0473f ("btrfs: allow mounting btrfs subvolumes with
different ro/rw options")
Signed-off-by: Christoph Jaeger <christophjaeger@linux.com>
Signed-off-by: Chris Mason <clm@fb.com>
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