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 52B93CA9EBC for ; Sun, 27 Oct 2019 21:03:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1B3D120B7C for ; Sun, 27 Oct 2019 21:03:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572210212; bh=XsUiFacgZc1EmsQMXFnWjIiZN8J08qKJUkr7XAuI3xc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=sMqCsAgD1ErkQ/vL23dgSWrA04Bu6ZhPuJM5ZrbqtS21JyRLmu+wWTrhwUJl2n6y+ 48kyut/C2qN7OV2QXe9X9IDRbty5hD9MyTg01OGSDPr+TIiOUZ4inyYi18MODOqLAw O8MutQuD4iqNIOsYm6S/WYqU1+oRk0ce11cWYapg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728344AbfJ0VDa (ORCPT ); Sun, 27 Oct 2019 17:03:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:48716 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728289AbfJ0VD0 (ORCPT ); Sun, 27 Oct 2019 17:03:26 -0400 Received: from localhost (100.50.158.77.rev.sfr.net [77.158.50.100]) (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 221C12064A; Sun, 27 Oct 2019 21:03:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572210205; bh=XsUiFacgZc1EmsQMXFnWjIiZN8J08qKJUkr7XAuI3xc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PbjfgKX7lRHI8b4aWp6Efr74KEWaoOtOyFJsCBUCB0c6Czn7IUzd6KS48IgIZBqtN AsUjbqweETj70uOrYCr6En2F9Xyu3ZmnEyA7bZMY6aEsuNYES5pbGIeAG7w9f5X+AD l4sLhE2zqYNi5IObrhFoMhmEAwz9PrFR1ZjCFTHw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Quinn Tran , Himanshu Madhani , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.4 03/41] scsi: qla2xxx: Fix unbound sleep in fcport delete path. Date: Sun, 27 Oct 2019 22:00:41 +0100 Message-Id: <20191027203102.118327803@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191027203056.220821342@linuxfoundation.org> References: <20191027203056.220821342@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: Quinn Tran [ Upstream commit c3b6a1d397420a0fdd97af2f06abfb78adc370df ] There are instances, though rare, where a LOGO request cannot be sent out and the thread in free session done can wait indefinitely. Fix this by putting an upper bound to sleep. Link: https://lore.kernel.org/r/20190912180918.6436-3-hmadhani@marvell.com Signed-off-by: Quinn Tran Signed-off-by: Himanshu Madhani Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/qla2xxx/qla_target.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 824e27eec7a1e..6c4f54aa60df6 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -437,6 +437,7 @@ static void qlt_free_session_done(struct work_struct *work) if (logout_started) { bool traced = false; + u16 cnt = 0; while (!ACCESS_ONCE(sess->logout_completed)) { if (!traced) { @@ -446,6 +447,9 @@ static void qlt_free_session_done(struct work_struct *work) traced = true; } msleep(100); + cnt++; + if (cnt > 200) + break; } ql_dbg(ql_dbg_tgt_mgt, vha, 0xf087, -- 2.20.1