From owner-svn-src-stable@freebsd.org Fri May 19 13:05:41 2017 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 93232D7326E; Fri, 19 May 2017 13:05:41 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 6E8011D4F; Fri, 19 May 2017 13:05:41 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v4JD5ehc022023; Fri, 19 May 2017 13:05:40 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v4JD5eCX022021; Fri, 19 May 2017 13:05:40 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201705191305.v4JD5eCX022021@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Fri, 19 May 2017 13:05:40 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r318541 - stable/9/sys/ofed/drivers/net/mlx4 X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 May 2017 13:05:41 -0000 Author: hselasky Date: Fri May 19 13:05:40 2017 New Revision: 318541 URL: https://svnweb.freebsd.org/changeset/base/318541 Log: MFC r317505: Don't free uninitialized sysctl contexts in the mlx4en driver. This can cause NULL pointer panics during failed device attach. Differential Revision: https://reviews.freebsd.org/D8876 Sponsored by: Mellanox Technologies Modified: stable/9/sys/ofed/drivers/net/mlx4/en_netdev.c stable/9/sys/ofed/drivers/net/mlx4/mlx4_en.h Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/ofed/drivers/net/mlx4/en_netdev.c ============================================================================== --- stable/9/sys/ofed/drivers/net/mlx4/en_netdev.c Fri May 19 13:04:09 2017 (r318540) +++ stable/9/sys/ofed/drivers/net/mlx4/en_netdev.c Fri May 19 13:05:40 2017 (r318541) @@ -1640,7 +1640,7 @@ void mlx4_en_free_resources(struct mlx4_ mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); } - if (priv->sysctl) + if (priv->stat_sysctl != NULL) sysctl_ctx_free(&priv->stat_ctx); } @@ -1755,7 +1755,7 @@ void mlx4_en_destroy_netdev(struct net_d mlx4_en_free_resources(priv); /* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */ - if (priv->sysctl) + if (priv->conf_sysctl != NULL) sysctl_ctx_free(&priv->conf_ctx); kfree(priv->tx_ring); @@ -2573,9 +2573,9 @@ static void mlx4_en_sysctl_conf(struct m pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev); sysctl_ctx_init(ctx); - priv->sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw), + priv->conf_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet"); - node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO, + node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO, "conf", CTLFLAG_RD, NULL, "Configuration"); node_list = SYSCTL_CHILDREN(node); @@ -2638,7 +2638,6 @@ static void mlx4_en_sysctl_conf(struct m static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv) { struct sysctl_ctx_list *ctx; - struct sysctl_oid *node; struct sysctl_oid_list *node_list; struct sysctl_oid *ring_node; struct sysctl_oid_list *ring_list; @@ -2649,9 +2648,9 @@ static void mlx4_en_sysctl_stat(struct m ctx = &priv->stat_ctx; sysctl_ctx_init(ctx); - node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO, + priv->stat_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO, "stat", CTLFLAG_RD, NULL, "Statistics"); - node_list = SYSCTL_CHILDREN(node); + node_list = SYSCTL_CHILDREN(priv->stat_sysctl); #ifdef MLX4_EN_PERF_STAT SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD, Modified: stable/9/sys/ofed/drivers/net/mlx4/mlx4_en.h ============================================================================== --- stable/9/sys/ofed/drivers/net/mlx4/mlx4_en.h Fri May 19 13:04:09 2017 (r318540) +++ stable/9/sys/ofed/drivers/net/mlx4/mlx4_en.h Fri May 19 13:05:40 2017 (r318541) @@ -586,7 +586,8 @@ struct mlx4_en_priv { struct callout watchdog_timer; struct ifmedia media; volatile int blocked; - struct sysctl_oid *sysctl; + struct sysctl_oid *conf_sysctl; + struct sysctl_oid *stat_sysctl; struct sysctl_ctx_list conf_ctx; struct sysctl_ctx_list stat_ctx; #define MLX4_EN_MAC_HASH_IDX 5