From: lu zhipeng <luzhipeng@cestc.cn>
Date: Wed, 21 Sep 2022 14:45:15 +0000 (+0800)
Subject: qcow2: fix memory leak in qcow2_read_extensions
X-Git-Tag: qemu-xen-4.18.0-rc5~509^2~17
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=38f034e728e5a60c27c3ac43ed2bc4ae7a6659b0;p=qemu-xen.git

qcow2: fix memory leak in qcow2_read_extensions

Free feature_table if it is failed in bdrv_pread.

Signed-off-by: lu zhipeng <luzhipeng@cestc.cn>
Message-Id: <20220921144515.1166-1-luzhipeng@cestc.cn>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/block/qcow2.c b/block/qcow2.c
index c6c6692fb7..c8fc3a6160 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -275,6 +275,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
                 if (ret < 0) {
                     error_setg_errno(errp, -ret, "ERROR: ext_feature_table: "
                                      "Could not read table");
+                    g_free(feature_table);
                     return ret;
                 }