From patchwork Tue Oct 6 18:31:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 271942 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=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 B161FC41604 for ; Tue, 6 Oct 2020 18:37:45 +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 344F920789 for ; Tue, 6 Oct 2020 18:37:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Y/m+yGIY" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 344F920789 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]:52112 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kPrqK-0001L1-29 for qemu-devel@archiver.kernel.org; Tue, 06 Oct 2020 14:37:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57572) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kPrks-00037W-9r for qemu-devel@nongnu.org; Tue, 06 Oct 2020 14:32:06 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:53459) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kPrkp-0006Rt-5h for qemu-devel@nongnu.org; Tue, 06 Oct 2020 14:32:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602009118; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type:in-reply-to:in-reply-to: references:references; bh=qQGr/uV1PD5lIMUXmn+4rxg1HAJlU+Yywd3806b1hgY=; b=Y/m+yGIYS5BwSYvfXJYCTVbHFzOd61dmxQCIyRWGuMgTLl5lBoK/kQmh5AV7MDD3ujyc8Q ghw0XjQJKOROjLUo6dMa5BWa4z59V//ZjEJ2Vuc5cABaUOlFZdWQ/yjltbYle6lAZuLKmn WpWxceohdN0vhvSUKxhiMBoTeFVCFbo= 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-377-yx7fk2SYMEG_J_Vsx8Tl1g-1; Tue, 06 Oct 2020 14:31:55 -0400 X-MC-Unique: yx7fk2SYMEG_J_Vsx8Tl1g-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 2C30A18A8226; Tue, 6 Oct 2020 18:31:53 +0000 (UTC) Received: from thuth.com (ovpn-113-60.ams2.redhat.com [10.36.113.60]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1A65E6EF46; Tue, 6 Oct 2020 18:31:50 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, Peter Maydell Subject: [PULL 09/16] pc-bios/s390-ccw: fix off-by-one error Date: Tue, 6 Oct 2020 20:31:15 +0200 Message-Id: <20201006183122.155609-10-thuth@redhat.com> In-Reply-To: <20201006183122.155609-1-thuth@redhat.com> References: <20201006183122.155609-1-thuth@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=thuth@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/06 00:55:20 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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=-0.733, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: Christian Borntraeger , qemu-s390x@nongnu.org, Cornelia Huck , Marc Hartmayer , Janosch Frank Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Marc Hartmayer This error takes effect when the magic value "zIPL" is located at the end of a block. For example if s2_cur_blk = 0x7fe18000 and the magic value "zIPL" is located at 0x7fe18ffc - 0x7fe18fff. Fixes: ba831b25262a ("s390-ccw: read stage2 boot loader data to find menu") Reviewed-by: Collin Walling Signed-off-by: Marc Hartmayer Message-Id: <20200924085926.21709-2-mhartmay@linux.ibm.com> Reviewed-by: Thomas Huth [thuth: Use "<= ... - 4" instead of "< ... - 3"] Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/bootmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c index 0ef6b851f3..767bb612db 100644 --- a/pc-bios/s390-ccw/bootmap.c +++ b/pc-bios/s390-ccw/bootmap.c @@ -163,7 +163,7 @@ static bool find_zipl_boot_menu_banner(int *offset) int i; /* Menu banner starts with "zIPL" */ - for (i = 0; i < virtio_get_block_size() - 4; i++) { + for (i = 0; i <= virtio_get_block_size() - 4; i++) { if (magic_match(s2_cur_blk + i, ZIPL_MAGIC_EBCDIC)) { *offset = i; return true;