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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 8D807C433ED for ; Wed, 14 Apr 2021 08:55:59 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E4B6761074 for ; Wed, 14 Apr 2021 08:55:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E4B6761074 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52532 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lWbJV-0006yr-O0 for qemu-devel@archiver.kernel.org; Wed, 14 Apr 2021 04:55:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59574) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lWbGo-0005Ff-W4 for qemu-devel@nongnu.org; Wed, 14 Apr 2021 04:53:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:50621) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lWbGk-0007eF-AC for qemu-devel@nongnu.org; Wed, 14 Apr 2021 04:53:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618390385; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VnVKYosWEgdh5dx670bfzV8sFG4nUgPl5T/x7tkaI5k=; b=INnSRVZ44xrf3Gou2Gn95Rl60LxOzpuqMuN6ISPod2bX2yNfZx0T1/vSChgPfelWqWcXaR s65XQkEfa4wQdp24UtfzxzKScgLR//bCpr0o+FKyhiA7344uS8jaX+VEJux6x4yFYd6oRS 4EQctTyDYa6bHQtZqEsXWrYN39nIvkQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-399-M78Xv9MnM6GVT-m0y-BAwQ-1; Wed, 14 Apr 2021 04:53:03 -0400 X-MC-Unique: M78Xv9MnM6GVT-m0y-BAwQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7EC2684B9A3; Wed, 14 Apr 2021 08:53:02 +0000 (UTC) Received: from localhost (unknown [10.40.208.10]) by smtp.corp.redhat.com (Postfix) with ESMTP id A75FE6F991; Wed, 14 Apr 2021 08:52:57 +0000 (UTC) Date: Wed, 14 Apr 2021 10:52:55 +0200 From: Igor Mammedov To: qemu-devel@nongnu.org Subject: Re: [PATCH for-6.0 v2] x86: acpi: use offset instead of pointer when using build_header() Message-ID: <20210414105255.0a2998c0@redhat.com> In-Reply-To: <20210414084356.3792113-1-imammedo@redhat.com> References: <20210414084356.3792113-1-imammedo@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=imammedo@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-stable@nongnu.org, mst@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Wed, 14 Apr 2021 04:43:56 -0400 Igor Mammedov wrote: > Do the same as in commit > (4d027afeb3a97 Virt: ACPI: fix qemu assert due to re-assigned table data address) > for remaining tables that happen to use saved at > the beginning pointer to build header to avoid assert > when table_data is relocated due to implicit re-size. > > In this case user is trying to start Windows 10 and getting assert at > hw/acpi/bios-linker-loader.c:239: > bios_linker_loader_add_checksum: Assertion `start_offset < file->blob->len' failed. > > Fixes: https://bugs.launchpad.net/bugs/1923497 > Signed-off-by: Igor Mammedov forgot to CC stable, doing it now > --- > v2: > - amend commit message (Michael) > PS: > I have build_header() refactoring patch that requires offset > instead of pointer, to make it harder to misuse but it's > a bit intrusive for last minute fixes. So here goes simplified > variant, and I'll post refactoring patch for 6.1. later. > > hw/acpi/aml-build.c | 15 +++++++++------ > hw/i386/acpi-build.c | 8 ++++++-- > 2 files changed, 15 insertions(+), 8 deletions(-) > > diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c > index d33ce8954a..f0035d2b4a 100644 > --- a/hw/acpi/aml-build.c > +++ b/hw/acpi/aml-build.c > @@ -1830,6 +1830,7 @@ build_rsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets, > int i; > unsigned rsdt_entries_offset; > AcpiRsdtDescriptorRev1 *rsdt; > + int rsdt_start = table_data->len; > const unsigned table_data_len = (sizeof(uint32_t) * table_offsets->len); > const unsigned rsdt_entry_size = sizeof(rsdt->table_offset_entry[0]); > const size_t rsdt_len = sizeof(*rsdt) + table_data_len; > @@ -1846,7 +1847,8 @@ build_rsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets, > ACPI_BUILD_TABLE_FILE, ref_tbl_offset); > } > build_header(linker, table_data, > - (void *)rsdt, "RSDT", rsdt_len, 1, oem_id, oem_table_id); > + (void *)(table_data->data + rsdt_start), > + "RSDT", rsdt_len, 1, oem_id, oem_table_id); > } > > /* Build xsdt table */ > @@ -1857,6 +1859,7 @@ build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets, > int i; > unsigned xsdt_entries_offset; > AcpiXsdtDescriptorRev2 *xsdt; > + int xsdt_start = table_data->len; > const unsigned table_data_len = (sizeof(uint64_t) * table_offsets->len); > const unsigned xsdt_entry_size = sizeof(xsdt->table_offset_entry[0]); > const size_t xsdt_len = sizeof(*xsdt) + table_data_len; > @@ -1873,7 +1876,8 @@ build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets, > ACPI_BUILD_TABLE_FILE, ref_tbl_offset); > } > build_header(linker, table_data, > - (void *)xsdt, "XSDT", xsdt_len, 1, oem_id, oem_table_id); > + (void *)(table_data->data + xsdt_start), > + "XSDT", xsdt_len, 1, oem_id, oem_table_id); > } > > void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base, > @@ -2053,10 +2057,9 @@ void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog, > uint64_t control_area_start_address; > TPMIf *tpmif = tpm_find(); > uint32_t start_method; > - void *tpm2_ptr; > > tpm2_start = table_data->len; > - tpm2_ptr = acpi_data_push(table_data, sizeof(AcpiTableHeader)); > + acpi_data_push(table_data, sizeof(AcpiTableHeader)); > > /* Platform Class */ > build_append_int_noprefix(table_data, TPM2_ACPI_CLASS_CLIENT, 2); > @@ -2095,8 +2098,8 @@ void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog, > log_addr_offset, 8, > ACPI_BUILD_TPMLOG_FILE, 0); > build_header(linker, table_data, > - tpm2_ptr, "TPM2", table_data->len - tpm2_start, 4, oem_id, > - oem_table_id); > + (void *)(table_data->data + tpm2_start), > + "TPM2", table_data->len - tpm2_start, 4, oem_id, oem_table_id); > } > > Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set, uint32_t io_offset, > diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c > index de98750aef..daaf8f473e 100644 > --- a/hw/i386/acpi-build.c > +++ b/hw/i386/acpi-build.c > @@ -1816,6 +1816,7 @@ build_hpet(GArray *table_data, BIOSLinker *linker, const char *oem_id, > const char *oem_table_id) > { > Acpi20Hpet *hpet; > + int hpet_start = table_data->len; > > hpet = acpi_data_push(table_data, sizeof(*hpet)); > /* Note timer_block_id value must be kept in sync with value advertised by > @@ -1824,13 +1825,15 @@ build_hpet(GArray *table_data, BIOSLinker *linker, const char *oem_id, > hpet->timer_block_id = cpu_to_le32(0x8086a201); > hpet->addr.address = cpu_to_le64(HPET_BASE); > build_header(linker, table_data, > - (void *)hpet, "HPET", sizeof(*hpet), 1, oem_id, oem_table_id); > + (void *)(table_data->data + hpet_start), > + "HPET", sizeof(*hpet), 1, oem_id, oem_table_id); > } > > static void > build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog, > const char *oem_id, const char *oem_table_id) > { > + int tcpa_start = table_data->len; > Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa); > unsigned log_addr_size = sizeof(tcpa->log_area_start_address); > unsigned log_addr_offset = > @@ -1849,7 +1852,8 @@ build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog, > ACPI_BUILD_TPMLOG_FILE, 0); > > build_header(linker, table_data, > - (void *)tcpa, "TCPA", sizeof(*tcpa), 2, oem_id, oem_table_id); > + (void *)(table_data->data + tcpa_start), > + "TCPA", sizeof(*tcpa), 2, oem_id, oem_table_id); > } > > #define HOLE_640K_START (640 * KiB)