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=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 AFDC2C33CAF for ; Thu, 16 Jan 2020 18:48:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 87AB424679 for ; Thu, 16 Jan 2020 18:48:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579200534; bh=Tsv2cFwSXKX5+sUOE41BpHJBx1IMbHjouscXos+JqRc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nSFaaM1S72dlBK3LC3084WT9MHdIGSnmids96W/qy392s5zTi8Iu2j+aAcaapeaDs GnGna5XRWrvgvuCc3+0T2NTeyN7a6vV4gveG/TEKR5ortXIS5OdLYuhaqaoS9aHBM4 z+g0A5QSnufdKPtKfOlskVlO8zUTk1wiUXtyD0+Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437006AbgAPSsw (ORCPT ); Thu, 16 Jan 2020 13:48:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:45976 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389720AbgAPRJj (ORCPT ); Thu, 16 Jan 2020 12:09:39 -0500 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 B6C8C24689; Thu, 16 Jan 2020 17:09:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579194578; bh=Tsv2cFwSXKX5+sUOE41BpHJBx1IMbHjouscXos+JqRc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ifsG+hEsHT8cL7IP/oKqIkvUvt8fkNq29uMWZCjd7FLKv7GE6DlL5eyGwLHpjIMI3 wt/TUtv4zmT8WUZOjBIqvsWInkn36zUIj2YTbU1d6UK/s7jKQ9fi7YN58vpbxWXOqI APa+o61fs0wXrXVy6+OGdeSLzato3TIOlXxIlB7Q= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Xi Wang , Jason Gunthorpe , Sasha Levin , linux-rdma@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 453/671] RDMA/hns: Fixs hw access invalid dma memory error Date: Thu, 16 Jan 2020 12:01:31 -0500 Message-Id: <20200116170509.12787-190-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116170509.12787-1-sashal@kernel.org> References: <20200116170509.12787-1-sashal@kernel.org> MIME-Version: 1.0 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: 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 af24698ff226..3012d7eb4ccb 100644 --- a/drivers/infiniband/hw/hns/hns_roce_qp.c +++ b/drivers/infiniband/hw/hns/hns_roce_qp.c @@ -262,7 +262,6 @@ void hns_roce_qp_free(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp) hns_roce_table_put(hr_dev, &qp_table->trrl_table, hr_qp->qpn); 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); } } EXPORT_SYMBOL_GPL(hns_roce_qp_free); -- 2.20.1