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=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 7DA25C64EB5 for ; Tue, 2 Oct 2018 13:36:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4E2662064D for ; Tue, 2 Oct 2018 13:36:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4E2662064D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387435AbeJBUUM (ORCPT ); Tue, 2 Oct 2018 16:20:12 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:36424 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731764AbeJBUUL (ORCPT ); Tue, 2 Oct 2018 16:20:11 -0400 Received: from localhost (24-104-73-23-ip-static.hfc.comcastbusiness.net [24.104.73.23]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id AF7B69D9; Tue, 2 Oct 2018 13:36:46 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bart Van Assche , Jason Gunthorpe Subject: [PATCH 4.9 73/94] IB/srp: Avoid that sg_reset -d ${srp_device} triggers an infinite loop Date: Tue, 2 Oct 2018 06:25:27 -0700 Message-Id: <20181002132505.580035386@linuxfoundation.org> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181002132500.494838053@linuxfoundation.org> References: <20181002132500.494838053@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review 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 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bart Van Assche commit ee92efe41cf358f4b99e73509f2bfd4733609f26 upstream. Use different loop variables for the inner and outer loop. This avoids that an infinite loop occurs if there are more RDMA channels than target->req_ring_size. Fixes: d92c0da71a35 ("IB/srp: Add multichannel support") Cc: Signed-off-by: Bart Van Assche Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/ulp/srp/ib_srp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -2639,7 +2639,7 @@ static int srp_reset_device(struct scsi_ { struct srp_target_port *target = host_to_target(scmnd->device->host); struct srp_rdma_ch *ch; - int i; + int i, j; u8 status; shost_printk(KERN_ERR, target->scsi_host, "SRP reset_device called\n"); @@ -2653,8 +2653,8 @@ static int srp_reset_device(struct scsi_ for (i = 0; i < target->ch_count; i++) { ch = &target->ch[i]; - for (i = 0; i < target->req_ring_size; ++i) { - struct srp_request *req = &ch->req_ring[i]; + for (j = 0; j < target->req_ring_size; ++j) { + struct srp_request *req = &ch->req_ring[j]; srp_finish_req(ch, req, scmnd->device, DID_RESET << 16); }