From: Yongseok Koh <yskoh@mellanox.com>
To: <ferruh.yigit@intel.com>
Cc: <dev@dpdk.org>, <adrien.mazarguil@6wind.com>,
<nelio.laranjeiro@6wind.com>, Yongseok Koh <yskoh@mellanox.com>,
<stable@dpdk.org>
Subject: [dpdk-dev] [PATCH] net/mlx5: fix wrong exception handling
Date: Mon, 29 May 2017 18:02:59 -0700 [thread overview]
Message-ID: <20170530010259.48823-1-yskoh@mellanox.com> (raw)
A sanity check is required in priv_fdir_disable(). If resizing Rx queue
fails, this can cause a crash by referencing a NULL pointer.
Cc: stable@dpdk.org
Fixes: 76f5c99e6840 ("mlx5: support flow director")
Fixes: 0cdddf4d0626 ("net/mlx5: split Rx queue structure")
Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
---
drivers/net/mlx5/mlx5_fdir.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_fdir.c b/drivers/net/mlx5/mlx5_fdir.c
index f80c58b4d..1cff41bab 100644
--- a/drivers/net/mlx5/mlx5_fdir.c
+++ b/drivers/net/mlx5/mlx5_fdir.c
@@ -733,9 +733,11 @@ priv_fdir_disable(struct priv *priv)
/* Destroy flow director context in each RX queue. */
for (i = 0; (i != priv->rxqs_n); i++) {
- struct rxq_ctrl *rxq_ctrl =
- container_of((*priv->rxqs)[i], struct rxq_ctrl, rxq);
+ struct rxq_ctrl *rxq_ctrl;
+ if (!(*priv->rxqs)[i])
+ continue;
+ rxq_ctrl = container_of((*priv->rxqs)[i], struct rxq_ctrl, rxq);
if (!rxq_ctrl->fdir_queue)
continue;
priv_fdir_queue_destroy(priv, rxq_ctrl->fdir_queue);
--
2.11.0
next reply other threads:[~2017-05-30 1:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-30 1:02 Yongseok Koh [this message]
2017-05-30 7:48 ` Adrien Mazarguil
2017-06-01 10:24 ` Ferruh Yigit
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