From: Timothy Redaelli <tredaelli@redhat.com>
To: Rasesh Mody <rasesh.mody@cavium.com>,
Harish Patil <harish.patil@cavium.com>,
Shahed Shaikh <shahed.shaikh@cavium.com>
Cc: dev@dpdk.org, stable@dpdk.org
Subject: [PATCH] net/qede: fix crash when configure fails
Date: Fri, 9 Nov 2018 16:45:40 +0100 [thread overview]
Message-ID: <37a7ac2b3c1522fd72e86bf11660f6c65880a8d6.1541777958.git.tredaelli@redhat.com> (raw)
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 <tredaelli@redhat.com>
---
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 8a4772f46..296189107 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);
--
2.19.1
next reply other threads:[~2018-11-09 15:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-09 15:45 Timothy Redaelli [this message]
2018-11-10 0:39 ` [PATCH] net/qede: fix crash when configure fails Mody, Rasesh
2018-11-12 12:09 ` [dpdk-stable] " Ferruh Yigit
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