From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 82950C432C3 for ; Fri, 22 Nov 2019 10:42:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 55F6620707 for ; Fri, 22 Nov 2019 10:42:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574419366; bh=/iiWpYIah33RZaJSah7hoPv2+EwlM7QCexritnX69Z8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Uj60LEmUv9f/n4irRWZuLAufMx6E/sJA3AVJZiAkNz2Xl08DaMNiaDU/H/NFVYFjT AtDOqtoziCH1/fY6stWqh34Kyb8CgBCI5o2P8rGyoOaeoU9AeqGC6a6cPwr6vfAT6v MR3KCu/6ddrN3IKXF4q/a+WHtkxauqjxDTew7uWw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729147AbfKVKmp (ORCPT ); Fri, 22 Nov 2019 05:42:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:47914 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728529AbfKVKmk (ORCPT ); Fri, 22 Nov 2019 05:42:40 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2A91B20707; Fri, 22 Nov 2019 10:42:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574419359; bh=/iiWpYIah33RZaJSah7hoPv2+EwlM7QCexritnX69Z8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nXbz5uQt8xAergb0A0D0omWlMWO8FYbXerWc60z2YvMzeZRpjrHU+0JHI7Vl4BndO WOsicMK8yxLXtTU93HHW6sC17VRHJDjhX+STlC+xsn06F5vS1hEdEptSrbxxXnPoW1 270Cjsnbj4VjAIaLHcEx5vLb+p7WRKyBj8fj67oY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?H=C3=A5kon=20Bugge?= , Jason Gunthorpe , Sasha Levin Subject: [PATCH 4.9 086/222] RDMA/i40iw: Fix incorrect iterator type Date: Fri, 22 Nov 2019 11:27:06 +0100 Message-Id: <20191122100909.781384355@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191122100830.874290814@linuxfoundation.org> References: <20191122100830.874290814@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Håkon Bugge [ Upstream commit 802fa45cd320de319e86c93bca72abec028ba059 ] Commit f27b4746f378 ("i40iw: add connection management code") uses an incorrect rcu iterator, whilst holding the rtnl_lock. Since the critical region invokes i40iw_manage_qhash(), which is a sleeping function, the rcu locking and traversal cannot be used. Signed-off-by: Håkon Bugge Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/i40iw/i40iw_cm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c index 85637696f6e96..282a726351c81 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_cm.c +++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c @@ -1652,7 +1652,7 @@ static enum i40iw_status_code i40iw_add_mqh_6(struct i40iw_device *iwdev, unsigned long flags; rtnl_lock(); - for_each_netdev_rcu(&init_net, ip_dev) { + for_each_netdev(&init_net, ip_dev) { if ((((rdma_vlan_dev_vlan_id(ip_dev) < I40IW_NO_VLAN) && (rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) || (ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) { -- 2.20.1