From d8bb71b6227366c188595b91c24a58c9b06e46dd Mon Sep 17 00:00:00 2001
From: Zhang Haoyu <zhanghy@sangfor.com>
Date: Sat, 11 Oct 2014 16:35:43 +0800
Subject: [PATCH] qcow2: fix leak of Qcow2DiscardRegion in
 update_refcount_discard

When the Qcow2DiscardRegion is adjacent to another one referenced by "d",
free this Qcow2DiscardRegion metadata referenced by "p" after
it was removed from s->discards queue.

Signed-off-by: Zhang Haoyu <zhanghy@sangfor.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/qcow2-refcount.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index 2bcaaf9b98..c31d85a840 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -524,6 +524,7 @@ found:
         QTAILQ_REMOVE(&s->discards, p, next);
         d->offset = MIN(d->offset, p->offset);
         d->bytes += p->bytes;
+        g_free(p);
     }
 }