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=-13.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 2642DC43387 for ; Fri, 11 Jan 2019 15:05:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E6B292084C for ; Fri, 11 Jan 2019 15:05:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547219112; bh=i4bQYueFMgPh6Esb3dFWr1vXNPchtbvxqKysqCqJNG4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2UHT17Y2iMlRZFzUiGK0DTswgzkNVtklG3z7WrzsMzcWWqWJ8g7tyWtj8yISo0XIB gFJtkLzVZvuwuiPgvuoWjuKnuI77CDYg4b7KQCgnXGj0p2e9xpeH1ICfKRngVaZBQC U3AkNvzikeF/6fBSA72AoDMqllv3Kty7I2Fr8a0A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387476AbfAKO37 (ORCPT ); Fri, 11 Jan 2019 09:29:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:49140 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733058AbfAKO34 (ORCPT ); Fri, 11 Jan 2019 09:29:56 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.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 4F0F12063F; Fri, 11 Jan 2019 14:29:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547216995; bh=i4bQYueFMgPh6Esb3dFWr1vXNPchtbvxqKysqCqJNG4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZDdUylxf7orJS+SmYFQSfToIOwRIJvYZ6FVfeOjn463O6AwoQGWfJQPR3LpXKcwwO tf999nA9wxnBxuUM6Kw4vfqDQHwuvriX+9aOpVrU8y5+D4YHpGLu9vtAzz5UnyvkAd ZX68B3PzDMjlw1h1He1xViNXfj5wfQ2TYK2Xt6s4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Trond Myklebust , Chuck Lever , Sasha Levin Subject: [PATCH 4.9 28/63] SUNRPC: Fix a race with XPRT_CONNECTING Date: Fri, 11 Jan 2019 15:14:31 +0100 Message-Id: <20190111131050.101036940@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190111131046.387528003@linuxfoundation.org> References: <20190111131046.387528003@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit cf76785d30712d90185455e752337acdb53d2a5d ] Ensure that we clear XPRT_CONNECTING before releasing the XPRT_LOCK so that we don't have races between the (asynchronous) socket setup code and tasks in xprt_connect(). Signed-off-by: Trond Myklebust Tested-by: Chuck Lever Signed-off-by: Sasha Levin --- net/sunrpc/xprtsock.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 1bf9153004cd..280fb3178708 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -2209,8 +2209,8 @@ static void xs_udp_setup_socket(struct work_struct *work) trace_rpc_socket_connect(xprt, sock, 0); status = 0; out: - xprt_unlock_connect(xprt, transport); xprt_clear_connecting(xprt); + xprt_unlock_connect(xprt, transport); xprt_wake_pending_tasks(xprt, status); } @@ -2395,8 +2395,8 @@ static void xs_tcp_setup_socket(struct work_struct *work) } status = -EAGAIN; out: - xprt_unlock_connect(xprt, transport); xprt_clear_connecting(xprt); + xprt_unlock_connect(xprt, transport); xprt_wake_pending_tasks(xprt, status); } -- 2.19.1