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=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 3356BC2D0DB for ; Tue, 28 Jan 2020 14:21:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EF3C324699 for ; Tue, 28 Jan 2020 14:21:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580221300; bh=/eUgO/y6630nvZMI+yXEuDwopxqJBiSlonyKV60DcfM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=EGm+/nEpB6rAOvX9dV6wPeGWo0oOwMN7rEFOTZw2Vo1zaU1YGmSDdBJVzAVM0nyxD ErPa1XVQuauvi6i21sULBl0EbcW77S1HPv1Zqb07iaRU2ZwxH3Bo0W2Q49JtB3BJJL Gjvm/mLhimOCPwUWR+Pokus49qvwPMAMtfe4OJ7Q= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731349AbgA1OVj (ORCPT ); Tue, 28 Jan 2020 09:21:39 -0500 Received: from mail.kernel.org ([198.145.29.99]:46982 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731311AbgA1OVg (ORCPT ); Tue, 28 Jan 2020 09:21:36 -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 BF57D24686; Tue, 28 Jan 2020 14:21:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580221296; bh=/eUgO/y6630nvZMI+yXEuDwopxqJBiSlonyKV60DcfM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ElmsI3eN3AUNGFr3xbnyyH7hY10oWZ3MsG3LGj7uedSz7egWnMMUJVRcTYDf7yiRX eYBfILh26RxPL1U/AVvJ3cHvFJ/LOlOGFCE8vQhx5u6ToMZPEJkLYe+g+wMrF9xkWE KE0qr5WC7lI/Aa4d/hy/unqXCX1F6WH0O/WNhfHQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Xi Wang , Jason Gunthorpe , Sasha Levin Subject: [PATCH 4.9 167/271] RDMA/hns: Fixs hw access invalid dma memory error Date: Tue, 28 Jan 2020 15:05:16 +0100 Message-Id: <20200128135905.012591415@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200128135852.449088278@linuxfoundation.org> References: <20200128135852.449088278@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: Xi Wang [ Upstream commit ec5bc2cc69b4fc494e04d10fc5226f6f9cf67c56 ] When smmu is enable, if execute the perftest command and then use 'kill -9' to exit, follow this operation repeatedly, the kernel will have a high probability to print the following smmu event: arm-smmu-v3 arm-smmu-v3.1.auto: event 0x10 received: arm-smmu-v3 arm-smmu-v3.1.auto: 0x00007d0000000010 arm-smmu-v3 arm-smmu-v3.1.auto: 0x0000020900000080 arm-smmu-v3 arm-smmu-v3.1.auto: 0x00000000f47cf000 arm-smmu-v3 arm-smmu-v3.1.auto: 0x00000000f47cf000 This is because the hw will periodically refresh the qpc cache until the next reset. This patch fixed it by removing the action that release qpc memory in the 'hns_roce_qp_free' function. Fixes: 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver") Signed-off-by: Xi Wang Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/hns/hns_roce_qp.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c index 33cf1035030b5..6f3c0ea99dd05 100644 --- a/drivers/infiniband/hw/hns/hns_roce_qp.c +++ b/drivers/infiniband/hw/hns/hns_roce_qp.c @@ -241,7 +241,6 @@ void hns_roce_qp_free(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp) if ((hr_qp->ibqp.qp_type) != IB_QPT_GSI) { hns_roce_table_put(hr_dev, &qp_table->irrl_table, hr_qp->qpn); - hns_roce_table_put(hr_dev, &qp_table->qp_table, hr_qp->qpn); } } -- 2.20.1