[dpdk-stable] [PATCH 1/3] bus/vmbus: fix leak on device scan

[David Marchand]

Caught running ASAN.

The device name is leaked on scan.
rte_device name field being a const, use the private vmbus struct to
store the device name and point at it.

Fixes: 831dba47bd36 ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable at dpdk.org

Signed-off-by: David Marchand <david.marchand at redhat.com>
---
 drivers/bus/vmbus/linux/vmbus_bus.c | 5 ++++-
 drivers/bus/vmbus/rte_bus_vmbus.h   | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/vmbus/linux/vmbus_bus.c b/drivers/bus/vmbus/linux/vmbus_bus.c
index 3c924eee14..d8eb07d398 100644
--- a/drivers/bus/vmbus/linux/vmbus_bus.c
+++ b/drivers/bus/vmbus/linux/vmbus_bus.c
@@ -242,7 +242,7 @@ vmbus_scan_one(const char *name)
 		return -1;
 
 	dev->device.bus = &rte_vmbus_bus.bus;
-	dev->device.name = strdup(name);
+	dev->device.name = dev->name = strdup(name);
 	if (!dev->device.name)
 		goto error;
 
@@ -261,6 +261,7 @@ vmbus_scan_one(const char *name)
 
 	/* skip non-network devices */
 	if (rte_uuid_compare(dev->class_id, vmbus_nic_uuid) != 0) {
+		free(dev->name);
 		free(dev);
 		return 0;
 	}
@@ -312,6 +313,7 @@ vmbus_scan_one(const char *name)
 		} else { /* already registered */
 			VMBUS_LOG(NOTICE,
 				"%s already registered", name);
+			free(dev->name);
 			free(dev);
 		}
 		return 0;
@@ -322,6 +324,7 @@ vmbus_scan_one(const char *name)
 error:
 	VMBUS_LOG(DEBUG, "failed");
 
+	free(dev->name);
 	free(dev);
 	return -1;
 }
diff --git a/drivers/bus/vmbus/rte_bus_vmbus.h b/drivers/bus/vmbus/rte_bus_vmbus.h
index 4cf73ce815..438eb481fc 100644
--- a/drivers/bus/vmbus/rte_bus_vmbus.h
+++ b/drivers/bus/vmbus/rte_bus_vmbus.h
@@ -65,6 +65,7 @@ struct rte_vmbus_device {
 	TAILQ_ENTRY(rte_vmbus_device) next;    /**< Next probed VMBUS device */
 	const struct rte_vmbus_driver *driver; /**< Associated driver */
 	struct rte_device device;              /**< Inherit core device */
+	char *name;                            /**< Device name */
 	rte_uuid_t device_id;		       /**< VMBUS device id */
 	rte_uuid_t class_id;		       /**< VMBUS device type */
 	uint32_t relid;			       /**< id for primary */
-- 
2.23.0