linux-kernel - [PATCH 4.19 90/93] xen/netback: fix error path of xenvif_connect

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Message-Id: <20191027203317.530252227@linuxfoundation.org>
Date:   Sun, 27 Oct 2019 22:01:42 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Juergen Gross <jgross@...e.com>,
        Paul Durrant <paul@....org>, Wei Liu <wei.liu@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.19 90/93] xen/netback: fix error path of xenvif_connect_data()

From: Juergen Gross <jgross@...e.com>

commit 3d5c1a037d37392a6859afbde49be5ba6a70a6b3 upstream.

xenvif_connect_data() calls module_put() in case of error. This is
wrong as there is no related module_get().

Remove the superfluous module_put().

Fixes: 279f438e36c0a7 ("xen-netback: Don't destroy the netdev until the vif is shut down")
Cc: <stable@...r.kernel.org> # 3.12
Signed-off-by: Juergen Gross <jgross@...e.com>
Reviewed-by: Paul Durrant <paul@....org>
Reviewed-by: Wei Liu <wei.liu@...nel.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/xen-netback/interface.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -718,7 +718,6 @@ err_unmap:
 	xenvif_unmap_frontend_data_rings(queue);
 	netif_napi_del(&queue->napi);
 err:
-	module_put(THIS_MODULE);
 	return err;
 }