[PATCH 6/8] Drivers: hv: utils: Remove util transport handler from list if registration fails

[K. Y. Srinivasan]

From: Alex Ng <alexng at microsoft.com>

If util transport fails to initialize for any reason, the list of transport
handlers may become corrupted due to freeing the transport handler without
removing it from the list. Fix this by cleaning it up from the list.

Signed-off-by: Alex Ng <alexng at microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys at microsoft.com>
---
 drivers/hv/hv_utils_transport.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/hv/hv_utils_transport.c b/drivers/hv/hv_utils_transport.c
index 4f42c0e..9a9983f 100644
--- a/drivers/hv/hv_utils_transport.c
+++ b/drivers/hv/hv_utils_transport.c
@@ -310,6 +310,9 @@ struct hvutil_transport *hvutil_transport_init(const char *name,
 	return hvt;
 
 err_free_hvt:
+	spin_lock(&hvt_list_lock);
+	list_del(&hvt->list);
+	spin_unlock(&hvt_list_lock);
 	kfree(hvt);
 	return NULL;
 }
-- 
1.7.4.1