From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id C6E88A0353 for ; Tue, 5 May 2020 21:47:50 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B820A1D641; Tue, 5 May 2020 21:47:50 +0200 (CEST) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by dpdk.org (Postfix) with ESMTP id 5E5241D641 for ; Tue, 5 May 2020 21:47:49 +0200 (CEST) Received: from Internal Mail-Server by MTLPINE1 (envelope-from akozyrev@mellanox.com) with ESMTPS (AES256-SHA encrypted); 5 May 2020 22:47:48 +0300 Received: from pegasus02.mtr.labs.mlnx. (pegasus02.mtr.labs.mlnx [10.210.16.122]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 045JlmOW020562; Tue, 5 May 2020 22:47:48 +0300 From: Alexander Kozyrev To: dev@dpdk.org Cc: stable@dpdk.org, rasland@mellanox.com, viacheslavo@mellanox.com Date: Tue, 5 May 2020 19:47:46 +0000 Message-Id: <1588708066-18165-1-git-send-email-akozyrev@mellanox.com> X-Mailer: git-send-email 1.8.3.1 Subject: [dpdk-stable] [PATCH] net/mlx5: fix debug log segfault on TxQ release X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" 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idx); The problem is txq is freed inside the mlx5_txq_release() function and no longer valid in the debug log right after this invocation.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 --- 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