* [dpdk-stable] [PATCH v5] net/mlx5: fix mutex unlock in txpp cleanup
@ 2021-09-29 3:20 Chengfeng Ye
0 siblings, 0 replies; 3+ messages in thread
From: Chengfeng Ye @ 2021-09-29 3:20 UTC (permalink / raw)
To: david.marchand, viacheslavo; +Cc: dev, Chengfeng Ye, stable
The lock sh->txpp.mutex was not correctly released on one path
of cleanup function return, potentially causing the deadlock.
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dpdk-stable] [PATCH v5] net/mlx5: fix mutex unlock in txpp cleanup
2021-10-12 10:02 Chengfeng Ye
@ 2021-11-02 7:55 ` Slava Ovsiienko
0 siblings, 0 replies; 3+ messages in thread
From: Slava Ovsiienko @ 2021-11-02 7:55 UTC (permalink / raw)
To: Chengfeng Ye, david.marchand, Shahaf Shuler, Matan Azrad; +Cc: dev, stable
> -----Original Message-----
> From: Chengfeng Ye <cyeaa@connect.ust.hk>
> Sent: Tuesday, October 12, 2021 13:02
> To: david.marchand@redhat.com; Slava Ovsiienko
> <viacheslavo@nvidia.com>; Shahaf Shuler <shahafs@nvidia.com>; Matan
> Azrad <matan@nvidia.com>
> Cc: dev@dpdk.org; Chengfeng Ye <cyeaa@connect.ust.hk>;
> stable@dpdk.org
> Subject: [PATCH v5] net/mlx5: fix mutex unlock in txpp cleanup
>
> The lock sh->txpp.mutex was not correctly released on one path of cleanup
> function return, potentially causing the deadlock.
>
> Fixes: d133f4cdb7 ("net/mlx5: create clock queue for packet pacing")
> Cc: stable@dpdk.org
>
> Signed-off-by: Chengfeng Ye <cyeaa@connect.ust.hk>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [dpdk-stable] [PATCH v5] net/mlx5: fix mutex unlock in txpp cleanup
@ 2021-10-12 10:02 Chengfeng Ye
2021-11-02 7:55 ` Slava Ovsiienko
0 siblings, 1 reply; 3+ messages in thread
From: Chengfeng Ye @ 2021-10-12 10:02 UTC (permalink / raw)
To: david.marchand, viacheslavo, shahafs, matan; +Cc: dev, Chengfeng Ye, stable
The lock sh->txpp.mutex was not correctly released on one path
of cleanup function return, potentially causing the deadlock.
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
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-11-02 7:55 ` Slava Ovsiienko
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