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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 CF1F7C43381 for ; Mon, 4 Mar 2019 08:30:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9F4F2208E4 for ; Mon, 4 Mar 2019 08:30:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551688252; bh=rae7IBApMra51kMwi+gjqMXUaiTupah0oHUHnsAEMDs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=mPFkY5Ax1j8foOd374iYEOcpbVkkq26MaacPoWHdqm53QcXZ+cgjhPof6Yoc2Q3rn V7XARWnSgjnbP7cF88wWvSXFFePb8B2H6gwy5lzNyI6zD7h+ZQq/h7aKEaGBN8EQpd qGWLK/huX2FKwuI9RrmuEz4yZwXxohYmDlm4oY2k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727791AbfCDIau (ORCPT ); Mon, 4 Mar 2019 03:30:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:59586 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726254AbfCDIas (ORCPT ); Mon, 4 Mar 2019 03:30:48 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.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 0C22A20823; Mon, 4 Mar 2019 08:30:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551688247; bh=rae7IBApMra51kMwi+gjqMXUaiTupah0oHUHnsAEMDs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=v2Bo++TryMCaYb3i2dyBhCfNSAzYTZXpqqE8hgWvZ0LrEwuygvM1kDcPqFgt9luyQ r+wErUoelRGADsdIgqbhYW1gOSe/qy2dk0dTWkAyFV8+0z+AdZf390s/PPAhT4ZXen 4vRowSPdhccitLUIl1lopYQHbDh+WY3izwYzJeUY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ben Gardon , Jim Mattson , Paolo Bonzini , Sasha Levin Subject: [PATCH 4.19 64/78] kvm: selftests: Fix region overlap check in kvm_util Date: Mon, 4 Mar 2019 09:22:47 +0100 Message-Id: <20190304081628.427365367@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190304081625.508788074@linuxfoundation.org> References: <20190304081625.508788074@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore 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 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 94a980c39c8e3f8abaff5d3b5bbcd4ccf1c02c4f ] Fix a call to userspace_mem_region_find to conform to its spec of taking an inclusive, inclusive range. It was previously being called with an inclusive, exclusive range. Also remove a redundant region bounds check in vm_userspace_mem_region_add. Region overlap checking is already performed by the call to userspace_mem_region_find. Tested: Compiled tools/testing/selftests/kvm with -static Ran all resulting test binaries on an Intel Haswell test machine All tests passed Signed-off-by: Ben Gardon Reviewed-by: Jim Mattson Signed-off-by: Paolo Bonzini Signed-off-by: Sasha Levin --- tools/testing/selftests/kvm/lib/kvm_util.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 6fd8c089cafcd..fb5d2d1e0c048 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -590,7 +590,7 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm, * already exist. */ region = (struct userspace_mem_region *) userspace_mem_region_find( - vm, guest_paddr, guest_paddr + npages * vm->page_size); + vm, guest_paddr, (guest_paddr + npages * vm->page_size) - 1); if (region != NULL) TEST_ASSERT(false, "overlapping userspace_mem_region already " "exists\n" @@ -606,15 +606,10 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm, region = region->next) { if (region->region.slot == slot) break; - if ((guest_paddr <= (region->region.guest_phys_addr - + region->region.memory_size)) - && ((guest_paddr + npages * vm->page_size) - >= region->region.guest_phys_addr)) - break; } if (region != NULL) TEST_ASSERT(false, "A mem region with the requested slot " - "or overlapping physical memory range already exists.\n" + "already exists.\n" " requested slot: %u paddr: 0x%lx npages: 0x%lx\n" " existing slot: %u paddr: 0x%lx size: 0x%lx", slot, guest_paddr, npages, -- 2.19.1