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[PULL,01/28] qcow2: fix leak of Qcow2DiscardRegion in update_refcount_discard

Message ID 1413812154-11153-2-git-send-email-kwolf@redhat.com
State New
Headers show

Commit Message

Kevin Wolf Oct. 20, 2014, 1:35 p.m. UTC 
From: Zhang Haoyu <zhanghy@sangfor.com>

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(+)
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Patch

diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index 2bcaaf9..c31d85a 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);
     }
 }