From 0b72af8d1ca59f6ffe8db4a8bcf8b56d3d7e24fe Mon Sep 17 00:00:00 2001
From: Ian Jackson <ian.jackson@eu.citrix.com>
Date: Fri, 4 Sep 2009 16:12:28 +0100
Subject: [PATCH] fix qemu memory leak in block interface

the qemu block interface leaks memory every time a read or write request
is issued, this patch fixes it.
This is also the bug that is causing stubdomains to crash under high
disk IO.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
(cherry picked from commit 9c58cf9321f746b223bdd778c49c31ff756b6b1b)
---
 block.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block.c b/block.c
index 36f5eb91..6ce453c7 100644
--- a/block.c
+++ b/block.c
@@ -1378,6 +1378,7 @@ static void bdrv_aio_rw_vector_cb(void *opaque, int ret)
     qemu_vfree(s->bounce);
     s->this_aiocb->cb(s->this_aiocb->opaque, ret);
     qemu_aio_release(s->this_aiocb);
+    qemu_free(s);
 }
 
 static BlockDriverAIOCB *bdrv_aio_rw_vector(BlockDriverState *bs,
-- 
2.39.5