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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 1A5C6C55179 for ; Tue, 27 Oct 2020 16:21:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B6C0021556 for ; Tue, 27 Oct 2020 16:21:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603815683; bh=Y36RkweFJ4q8GKMDFEBjLwQz1r5HdSwplcRlWjclvwc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kfOXbOkYtEBQ8lFpSCLegA69ZzjhgCN0YVIY39QTvJF2kZ3dTHTiLpHi42xFxrE+I genLZ+XD/5DjBr8s1H/OYpQUr+difp3WRy+BvDX9vtUNs6QUBln7DxC0JqVwkqBmB1 l7J2WZ+jdu+jYz7jDspO/lQHtCqjg8EsKrlZvn0o= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1805122AbgJ0QAd (ORCPT ); Tue, 27 Oct 2020 12:00:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:59252 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1801319AbgJ0Pjs (ORCPT ); Tue, 27 Oct 2020 11:39:48 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 BC04122283; Tue, 27 Oct 2020 15:39:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603813186; bh=Y36RkweFJ4q8GKMDFEBjLwQz1r5HdSwplcRlWjclvwc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hR8JygSkQGgk9tduB6rIXmSXA4Sl2/48pSPmKaBrk64S8b2/NFaI+a88vSTWrn8Va EGNFhdgLBHLtDiQJcUyuMDd2dLSmdpqu501sAdgNHYgrL6Adkv7yXcds6IUhsAuwKh cpZunPDKbdYWKPMwQMTgAmHn6Ti5M/mc5JJ1Gv8M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jiaran Zhang , Weihang Li , Jason Gunthorpe , Sasha Levin Subject: [PATCH 5.9 466/757] RDMA/hns: Solve the overflow of the calc_pg_sz() Date: Tue, 27 Oct 2020 14:51:56 +0100 Message-Id: <20201027135512.379823885@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135450.497324313@linuxfoundation.org> References: <20201027135450.497324313@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiaran Zhang [ Upstream commit 768202a0825d447de785e87ff1ea1d3c86a71727 ] calc_pg_sz() may gets a data calculation overflow if the PAGE_SIZE is 64 KB and hop_num is 2. It is because that all variables involved in calculation are defined in type of int. So change the type of bt_chunk_size, buf_chunk_size and obj_per_chunk_default to u64. Fixes: ba6bb7e97421 ("RDMA/hns: Add interfaces to get pf capabilities from firmware") Link: https://lore.kernel.org/r/1600509802-44382-6-git-send-email-liweihang@huawei.com Signed-off-by: Jiaran Zhang Signed-off-by: Weihang Li Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 59087d5811ba3..547f8c7dcf561 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -1770,9 +1770,9 @@ static void calc_pg_sz(int obj_num, int obj_size, int hop_num, int ctx_bt_num, int *buf_page_size, int *bt_page_size, u32 hem_type) { u64 obj_per_chunk; - int bt_chunk_size = 1 << PAGE_SHIFT; - int buf_chunk_size = 1 << PAGE_SHIFT; - int obj_per_chunk_default = buf_chunk_size / obj_size; + u64 bt_chunk_size = PAGE_SIZE; + u64 buf_chunk_size = PAGE_SIZE; + u64 obj_per_chunk_default = buf_chunk_size / obj_size; *buf_page_size = 0; *bt_page_size = 0; -- 2.25.1