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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 CE13EC433DF for ; Mon, 29 Jun 2020 20:28:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB45520656 for ; Mon, 29 Jun 2020 20:28:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593462499; bh=R3dj5uUY5vdBNrTm10zkbKXSsvf6RtxEZaYpFxh5YlY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=d1I78iBE3eaHv3pbKTbUUJkQGqsz/WxLzF9DGs9nny3qZEf/DabQnXurh5tZ+tHt4 IEDhiJbnLhP210CXl+Ia8hs66uINvHQr79of1mKYA1tY/bvwFN3x4VyElPy59Uuegd EmPEArep02w3yol5xH3SeRO5XFhZfnMLLT59sGn4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732655AbgF2U2R (ORCPT ); Mon, 29 Jun 2020 16:28:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:37024 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732507AbgF2TZY (ORCPT ); Mon, 29 Jun 2020 15:25:24 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6D5C425379; Mon, 29 Jun 2020 15:40:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593445241; bh=R3dj5uUY5vdBNrTm10zkbKXSsvf6RtxEZaYpFxh5YlY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TWPIihU+2OLCqUOt8sXrtIHnxfbk8xEjBO5kI5RSpmLDi8kj5UobWK/LBt2stkqeu tuGknzaWTIjiITvSoGRQbr0Z4+WaeVsChr5etINGBS/5wgOxbd5gNC03hwyatnXh+m rDtJTI+EuxSmxlOK7T37mcQWl7L/6DlMrw3yqX9o= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tyrel Datwyler , "Martin K . Petersen" , Sasha Levin Subject: [PATCH 4.9 025/191] scsi: ibmvscsi: Don't send host info in adapter info MAD after LPM Date: Mon, 29 Jun 2020 11:37:21 -0400 Message-Id: <20200629154007.2495120-26-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200629154007.2495120-1-sashal@kernel.org> References: <20200629154007.2495120-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.229-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-4.9.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 4.9.229-rc1 X-KernelTest-Deadline: 2020-07-01T15:39+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tyrel Datwyler [ Upstream commit 4919b33b63c8b69d8dcf2b867431d0e3b6dc6d28 ] The adapter info MAD is used to send the client info and receive the host info as a response. A persistent buffer is used and as such the client info is overwritten after the response. During the course of a normal adapter reset the client info is refreshed in the buffer in preparation for sending the adapter info MAD. However, in the special case of LPM where we reenable the CRQ instead of a full CRQ teardown and reset we fail to refresh the client info in the adapter info buffer. As a result, after Live Partition Migration (LPM) we erroneously report the host's info as our own. [mkp: typos] Link: https://lore.kernel.org/r/20200603203632.18426-1-tyreld@linux.ibm.com Signed-off-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ibmvscsi/ibmvscsi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c index e1730227b4481..f299839698a34 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.c +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c @@ -425,6 +425,8 @@ static int ibmvscsi_reenable_crq_queue(struct crq_queue *queue, int rc = 0; struct vio_dev *vdev = to_vio_dev(hostdata->dev); + set_adapter_info(hostdata); + /* Re-enable the CRQ */ do { if (rc) -- 2.25.1