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 91F43C33CB6 for ; Thu, 16 Jan 2020 18:03:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 674BC2464B for ; Thu, 16 Jan 2020 18:03:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579197825; bh=1L+Uh7jj68z+yjjo5rQZ/oiCiuQZRMJEugTJpqgN8wc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=12B0bxYpZ8eWrWXLQFFLlfdjCQRU5yPk08j0J8y42xATQP8zLr8/udGiq3StLXQLm cBXyLeZ6g0reMs6smTcNBW5VC4FT9UTYyvluBMIbdnR+v3fxBxlw1HzjpRatRT75X+ LebNXXrAa+ZvLEAr56Mwai8BZV7JBQOIzxQ3rHdU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393682AbgAPRkr (ORCPT ); Thu, 16 Jan 2020 12:40:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:56334 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393519AbgAPRjo (ORCPT ); Thu, 16 Jan 2020 12:39:44 -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 50D812470D; Thu, 16 Jan 2020 17:39:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579196384; bh=1L+Uh7jj68z+yjjo5rQZ/oiCiuQZRMJEugTJpqgN8wc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EuDO5KvHfsdMP2hEmBHrcrnJWClJIFMoxgGoAcsXgCmJ+cxEhIngioPL0VDKyYE3T MuHWzNr1CbI9K5+1nieZFaTjg7NQY315A2TALarX+lpeLSMk9i2LdGnsmP+328nb4a fyu84xA/GSlc5wRFcdvNGSogCaJfrVgsuacV23kQ= 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 4.9 166/251] RDMA/hns: Fixs hw access invalid dma memory error Date: Thu, 16 Jan 2020 12:35:15 -0500 Message-Id: <20200116173641.22137-126-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116173641.22137-1-sashal@kernel.org> References: <20200116173641.22137-1-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 33cf1035030b..6f3c0ea99dd0 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