From 69d3e963e446be9c8d98638223589e8cdf44dd9e Mon Sep 17 00:00:00 2001 From: Timothy Redaelli Date: Fri, 9 Nov 2018 16:45:40 +0100 Subject: [PATCH] net/qede: fix crash when configure fails Currently, if configuration fails (for example if a 100G card is used with an odd number of RX/TX queues) QEDE crashes due to a null pointer dereference. This commit fixes it by checking that the pointer is not NULL before using it. Fixes: 7105b24f4bb8 ("net/qede: fix memory alloc for multiple port reconfig") Cc: stable@dpdk.org Signed-off-by: Timothy Redaelli Acked-by: Rasesh Mody --- drivers/net/qede/qede_rxtx.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c index 8a4772f463..2961891071 100644 --- a/drivers/net/qede/qede_rxtx.c +++ b/drivers/net/qede/qede_rxtx.c @@ -235,12 +235,13 @@ static void qede_rx_queue_release_mbufs(struct qede_rx_queue *rxq) void qede_rx_queue_release(void *rx_queue) { struct qede_rx_queue *rxq = rx_queue; - struct qede_dev *qdev = rxq->qdev; - struct ecore_dev *edev = QEDE_INIT_EDEV(qdev); - - PMD_INIT_FUNC_TRACE(edev); + struct qede_dev *qdev; + struct ecore_dev *edev; if (rxq) { + qdev = rxq->qdev; + edev = QEDE_INIT_EDEV(qdev); + PMD_INIT_FUNC_TRACE(edev); qede_rx_queue_release_mbufs(rxq); qdev->ops->common->chain_free(edev, &rxq->rx_bd_ring); qdev->ops->common->chain_free(edev, &rxq->rx_comp_ring); @@ -399,12 +400,13 @@ static void qede_tx_queue_release_mbufs(struct qede_tx_queue *txq) void qede_tx_queue_release(void *tx_queue) { struct qede_tx_queue *txq = tx_queue; - struct qede_dev *qdev = txq->qdev; - struct ecore_dev *edev = QEDE_INIT_EDEV(qdev); - - PMD_INIT_FUNC_TRACE(edev); + struct qede_dev *qdev; + struct ecore_dev *edev; if (txq) { + qdev = txq->qdev; + edev = QEDE_INIT_EDEV(qdev); + PMD_INIT_FUNC_TRACE(edev); qede_tx_queue_release_mbufs(txq); qdev->ops->common->chain_free(edev, &txq->tx_pbl); rte_free(txq->sw_tx_ring); -- 2.20.1