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* [dpdk-stable] [PATCH] net/mlx5: fix TxQ release debug log timing
@ 2020-05-06 18:10 Alexander Kozyrev
  2020-05-11 13:58 ` Raslan Darawsheh
  0 siblings, 1 reply; 2+ messages in thread
From: Alexander Kozyrev @ 2020-05-06 18:10 UTC (permalink / raw)
  To: dev; +Cc: stable, rasland, viacheslavo, matan

Program received signal SIGSEGV, Segmentation fault.
0x00000000008ef7c4 in mlx5_tx_queue_release (dpdk_txq=0x17ce01680) at
drivers/net/mlx5/mlx5_txq.c:302
301 mlx5_txq_release(ETH_DEV(priv), i);
302 DRV_LOG(DEBUG, "port %u removing Tx queue %u from list",
303         PORT_ID(priv), txq->idx);
The problem is txq is freed inside the mlx5_txq_release() function
and no longer valid in the debug log right after this invocation.
Move the debug log before the mlx5_txq_release() function to fix this.

Fixes: a6d83b6a92 ("net/mlx5: standardize on negative errno values")
Cc: stable@dpdk.org

Signed-off-by: Alexander Kozyrev <akozyrev@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
---
 drivers/net/mlx5/mlx5_txq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
index 29e5cab..a211fa9 100644
--- a/drivers/net/mlx5/mlx5_txq.c
+++ b/drivers/net/mlx5/mlx5_txq.c
@@ -298,9 +298,9 @@
 	priv = txq_ctrl->priv;
 	for (i = 0; (i != priv->txqs_n); ++i)
 		if ((*priv->txqs)[i] == txq) {
-			mlx5_txq_release(ETH_DEV(priv), i);
 			DRV_LOG(DEBUG, "port %u removing Tx queue %u from list",
 				PORT_ID(priv), txq->idx);
+			mlx5_txq_release(ETH_DEV(priv), i);
 			break;
 		}
 }
-- 
1.8.3.1


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [dpdk-stable] [PATCH] net/mlx5: fix TxQ release debug log timing
  2020-05-06 18:10 [dpdk-stable] [PATCH] net/mlx5: fix TxQ release debug log timing Alexander Kozyrev
@ 2020-05-11 13:58 ` Raslan Darawsheh
  0 siblings, 0 replies; 2+ messages in thread
From: Raslan Darawsheh @ 2020-05-11 13:58 UTC (permalink / raw)
  To: Alexander Kozyrev, dev; +Cc: stable, Slava Ovsiienko, Matan Azrad

Hi,
> -----Original Message-----
> From: Alexander Kozyrev <akozyrev@mellanox.com>
> Sent: Wednesday, May 6, 2020 9:11 PM
> To: dev@dpdk.org
> Cc: stable@dpdk.org; Raslan Darawsheh <rasland@mellanox.com>; Slava
> Ovsiienko <viacheslavo@mellanox.com>; Matan Azrad
> <matan@mellanox.com>
> Subject: [PATCH] net/mlx5: fix TxQ release debug log timing
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000000008ef7c4 in mlx5_tx_queue_release (dpdk_txq=0x17ce01680) at
> drivers/net/mlx5/mlx5_txq.c:302
> 301 mlx5_txq_release(ETH_DEV(priv), i);
> 302 DRV_LOG(DEBUG, "port %u removing Tx queue %u from list",
> 303         PORT_ID(priv), txq->idx);
> The problem is txq is freed inside the mlx5_txq_release() function
> and no longer valid in the debug log right after this invocation.
> Move the debug log before the mlx5_txq_release() function to fix this.
> 
> Fixes: a6d83b6a92 ("net/mlx5: standardize on negative errno values")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Alexander Kozyrev <akozyrev@mellanox.com>
> Acked-by: Matan Azrad <matan@mellanox.com>
> ---
>  drivers/net/mlx5/mlx5_txq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
> index 29e5cab..a211fa9 100644
> --- a/drivers/net/mlx5/mlx5_txq.c
> +++ b/drivers/net/mlx5/mlx5_txq.c
> @@ -298,9 +298,9 @@
>  	priv = txq_ctrl->priv;
>  	for (i = 0; (i != priv->txqs_n); ++i)
>  		if ((*priv->txqs)[i] == txq) {
> -			mlx5_txq_release(ETH_DEV(priv), i);
>  			DRV_LOG(DEBUG, "port %u removing Tx queue %u
> from list",
>  				PORT_ID(priv), txq->idx);
> +			mlx5_txq_release(ETH_DEV(priv), i);
>  			break;
>  		}
>  }
> --
> 1.8.3.1

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh


^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2020-05-11 13:59 UTC | newest]

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2020-05-06 18:10 [dpdk-stable] [PATCH] net/mlx5: fix TxQ release debug log timing Alexander Kozyrev
2020-05-11 13:58 ` Raslan Darawsheh

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