[PATCH v2] hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer

[Hyunwoo Kim <v4bel@xxxxxxxxx>]

When hvs is released, there is a possibility that vsk->trans may not
be initialized to NULL, which could lead to a dangling pointer.
This issue is resolved by initializing vsk->trans to NULL.

Fixes: ae0078fcf0a5 ("hv_sock: implements Hyper-V transport for Virtual Sockets (AF_VSOCK)")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Hyunwoo Kim <v4bel@xxxxxxxxx>
---
v1 -> v2: Add fixes and cc tags
---
 net/vmw_vsock/hyperv_transport.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transport.c
index e2157e387217..56c232cf5b0f 100644
--- a/net/vmw_vsock/hyperv_transport.c
+++ b/net/vmw_vsock/hyperv_transport.c
@@ -549,6 +549,7 @@ static void hvs_destruct(struct vsock_sock *vsk)
 		vmbus_hvsock_device_unregister(chan);
 
 	kfree(hvs);
+	vsk->trans = NULL;
 }
 
 static int hvs_dgram_bind(struct vsock_sock *vsk, struct sockaddr_vm *addr)
-- 
2.34.1