From: Andrew Rybchenko <arybchenko@solarflare.com>
To: Gaetan Rivet <gaetan.rivet@6wind.com>
Cc: <dev@dpdk.org>, Igor Romanov <igor.romanov@oktetlabs.ru>,
<stable@dpdk.org>
Subject: [dpdk-dev] [PATCH] net/failsafe: fix crash on slave queue release
Date: Fri, 31 Aug 2018 17:16:32 +0100 [thread overview]
Message-ID: <1535732192-3058-1-git-send-email-arybchenko@solarflare.com> (raw)
From: Igor Romanov <igor.romanov@oktetlabs.ru>
Releasing a queue that is already released by slave may cause a
segmentation fault. For example, after a successfull device
configuration a queue is set up. Afterwards the device is reconfigured
with an invalid argument, forcing slaves to release the queues
(e.g. rte_eth_dev.data.tx_queues). Finally the failsafe's queues
are released. The queue release functions also try to release slaves'
queues using ETH(sdev)->data->tx_queues which is NULL at the time.
Add checks for NULL slaves' Tx and Rx queues before releasing them.
Fixes: a46f8d584eb8 ("net/failsafe: add fail-safe PMD")
Cc: stable@dpdk.org
Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
drivers/net/failsafe/failsafe_ops.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/net/failsafe/failsafe_ops.c b/drivers/net/failsafe/failsafe_ops.c
index 24e91c931..94b9769e7 100644
--- a/drivers/net/failsafe/failsafe_ops.c
+++ b/drivers/net/failsafe/failsafe_ops.c
@@ -309,9 +309,13 @@ fs_rx_queue_release(void *queue)
fs_lock(dev, 0);
if (rxq->event_fd > 0)
close(rxq->event_fd);
- FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE)
- SUBOPS(sdev, rx_queue_release)
- (ETH(sdev)->data->rx_queues[rxq->qid]);
+ FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
+ if (ETH(sdev)->data->rx_queues != NULL &&
+ ETH(sdev)->data->rx_queues[rxq->qid] != NULL) {
+ SUBOPS(sdev, rx_queue_release)
+ (ETH(sdev)->data->rx_queues[rxq->qid]);
+ }
+ }
dev->data->rx_queues[rxq->qid] = NULL;
rte_free(rxq);
fs_unlock(dev, 0);
@@ -477,9 +481,13 @@ fs_tx_queue_release(void *queue)
txq = queue;
dev = txq->priv->dev;
fs_lock(dev, 0);
- FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE)
- SUBOPS(sdev, tx_queue_release)
- (ETH(sdev)->data->tx_queues[txq->qid]);
+ FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
+ if (ETH(sdev)->data->tx_queues != NULL &&
+ ETH(sdev)->data->tx_queues[txq->qid] != NULL) {
+ SUBOPS(sdev, tx_queue_release)
+ (ETH(sdev)->data->tx_queues[txq->qid]);
+ }
+ }
dev->data->tx_queues[txq->qid] = NULL;
rte_free(txq);
fs_unlock(dev, 0);
--
2.17.1
next reply other threads:[~2018-08-31 16:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-31 16:16 Andrew Rybchenko [this message]
2018-09-19 15:14 ` Gaëtan Rivet
2018-09-21 0:05 ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
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