[Qemu-devel] [PATCH] l2tpv3: fix possible double free

[zhanghailiang <zhang.zhanghailiang@huawei.com>]

freeaddrinfo(result) does not assign result = NULL, after frees it.
There will be a double free when it goes error case.
It is reported by covertiy.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
---
 net/l2tpv3.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/l2tpv3.c b/net/l2tpv3.c
index 528d95b..f9e0c98 100644
--- a/net/l2tpv3.c
+++ b/net/l2tpv3.c
@@ -661,6 +661,7 @@ int net_init_l2tpv3(const NetClientOptions *opts,
         fd = -errno;
         error_report("l2tpv3_open : socket creation failed, errno = %d", -fd);
         freeaddrinfo(result);
+        result = NULL;
         goto outerr;
     }
     if (bind(fd, (struct sockaddr *) result->ai_addr, result->ai_addrlen)) {
-- 
1.7.12.4