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[Qemu-devel] [PATCH v2 1/3] net/colo: fix memory double free error

From: zhanghailiang
Subject: [Qemu-devel] [PATCH v2 1/3] net/colo: fix memory double free error
Date: Wed, 22 Feb 2017 11:46:36 +0800

The 'primary_list' and 'secondary_list' members of struct Connection
is not allocated through dynamically g_queue_new(), but we free it by using
g_queue_free(), which will lead to a double-free bug.

Signed-off-by: zhanghailiang <address@hidden>
 net/colo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/colo.c b/net/colo.c
index 6a6eacd..8cc166b 100644
--- a/net/colo.c
+++ b/net/colo.c
@@ -147,9 +147,9 @@ void connection_destroy(void *opaque)
     Connection *conn = opaque;
     g_queue_foreach(&conn->primary_list, packet_destroy, NULL);
-    g_queue_free(&conn->primary_list);
+    g_queue_clear(&conn->primary_list);
     g_queue_foreach(&conn->secondary_list, packet_destroy, NULL);
-    g_queue_free(&conn->secondary_list);
+    g_queue_clear(&conn->secondary_list);
     g_slice_free(Connection, conn);

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