From patchwork Mon Jul 12 06:09:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 476293 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A0DB5C07E9B for ; Mon, 12 Jul 2021 06:25:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88F6C61156 for ; Mon, 12 Jul 2021 06:25:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233572AbhGLG2b (ORCPT ); Mon, 12 Jul 2021 02:28:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:48092 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234984AbhGLG11 (ORCPT ); Mon, 12 Jul 2021 02:27:27 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D2D75611BF; Mon, 12 Jul 2021 06:23:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626071039; bh=RFD8NoNHhIm/+2813B5koE6lLfVwv8hKRgkGsrJSwqA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tutieJmEzGs6Wx+ickpgrJcrfLbmYkXAR1a+tl5J4vHg4AWzzM1xm1GsxPAs51AkM McndQl+UEcfuydhVZWcQ1FEbWlOkSewd4lqOEfNQSmQdTBEeYXAx8x+Hjs5NkJsQpf PISkFls5cPPmJEsNWUw8qkQP+6aRQZcmyznF8ZhA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Leon Romanovsky , Jason Gunthorpe , Sasha Levin Subject: [PATCH 5.4 211/348] RDMA/mlx5: Dont add slave port to unaffiliated list Date: Mon, 12 Jul 2021 08:09:55 +0200 Message-Id: <20210712060729.570314179@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060659.886176320@linuxfoundation.org> References: <20210712060659.886176320@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Leon Romanovsky [ Upstream commit 7ce6095e3bff8e20ce018b050960b527e298f7df ] The mlx5_ib_bind_slave_port() doesn't remove multiport device from the unaffiliated list, but mlx5_ib_unbind_slave_port() did it. This unbalanced flow caused to the situation where mlx5_ib_unaffiliated_port_list was changed during iteration. Fixes: 32f69e4be269 ("{net, IB}/mlx5: Manage port association for multiport RoCE") Link: https://lore.kernel.org/r/2726e6603b1e6ecfe76aa5a12a063af72173bcf7.1622477058.git.leonro@nvidia.com Reported-by: Dan Carpenter Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/mlx5/main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index a173737cb022..be624e613719 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -5871,8 +5871,6 @@ static void mlx5_ib_unbind_slave_port(struct mlx5_ib_dev *ibdev, port->mp.mpi = NULL; - list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list); - spin_unlock(&port->mp.mpi_lock); err = mlx5_nic_vport_unaffiliate_multiport(mpi->mdev); @@ -6026,6 +6024,8 @@ static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev) } else { mlx5_ib_dbg(dev, "unbinding port_num: %d\n", i + 1); mlx5_ib_unbind_slave_port(dev, dev->port[i].mp.mpi); + list_add_tail(&dev->port[i].mp.mpi->list, + &mlx5_ib_unaffiliated_port_list); } } }