From: Chengfeng Ye <cyeaa@connect.ust.hk>
To: asomalap@amd.com, viacheslavo@nvidia.com
Cc: dev@dpdk.org, Chengfeng Ye <cyeaa@connect.ust.hk>, stable@dpdk.org
Subject: [dpdk-dev] [PATCH v3] net/mlx5: fix mutex unlock in txpp cleanup
Date: Mon, 30 Aug 2021 05:59:55 -0700 [thread overview]
Message-ID: <20210830125955.4887-1-cyeaa@connect.ust.hk> (raw)
The lock sh->txpp.mutex was not correctly released if the function
returned in these two branches, which may led to deadlock if the
function was acquired again.
Fixes: d133f4cdb7 ("net/mlx5: create clock queue for packet pacing")
Cc: stable@dpdk.org
Signed-off-by: Chengfeng Ye <cyeaa@connect.ust.hk>
---
drivers/net/mlx5/mlx5_txpp.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/mlx5/mlx5_txpp.c b/drivers/net/mlx5/mlx5_txpp.c
index 4f6da9f2d1..0ece788a84 100644
--- a/drivers/net/mlx5/mlx5_txpp.c
+++ b/drivers/net/mlx5/mlx5_txpp.c
@@ -961,8 +961,12 @@ mlx5_txpp_stop(struct rte_eth_dev *dev)
MLX5_ASSERT(!ret);
RTE_SET_USED(ret);
MLX5_ASSERT(sh->txpp.refcnt);
- if (!sh->txpp.refcnt || --sh->txpp.refcnt)
+ if (!sh->txpp.refcnt || --sh->txpp.refcnt) {
+ ret = pthread_mutex_unlock(&sh->txpp.mutex);
+ MLX5_ASSERT(!ret);
+ RTE_SET_USED(ret);
return;
+ }
/* No references any more, do actual destroy. */
mlx5_txpp_destroy(sh);
ret = pthread_mutex_unlock(&sh->txpp.mutex);
--
2.17.1
reply other threads:[~2021-08-30 17:23 UTC|newest]
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