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 4E755C4338F for ; Mon, 2 Aug 2021 15:23:33 +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 DE75E610A0 for ; Mon, 2 Aug 2021 15:23:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org DE75E610A0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:54546 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mAZmt-0005OF-Rp for qemu-devel@archiver.kernel.org; Mon, 02 Aug 2021 11:23:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37234) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mAZmD-0004cI-2b for qemu-devel@nongnu.org; Mon, 02 Aug 2021 11:22:49 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:59452) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mAZmA-0001uD-0J for qemu-devel@nongnu.org; Mon, 02 Aug 2021 11:22:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1627917763; 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; bh=BQk+m3W780VbQSDp/q7xEyvYbt+KZlBf6mXhTyUD8n8=; b=cOYCkJ0dmrg6Dq3hgQQ/A3e46kFbH8p/1PbGcazAK2+cHevLHUF8OEd0b8V/WTbpfBcPsD xIwBV3lo51wQRmDELmUGbIglvTkKsQXV3Be62P0jucUpo8LV/XEB3zzMlxp0oF6G+N/RG/ 88HzYxzd9yalyrSFzych0rVE0Z259PE= 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-177-irn-g6eVOH2OwrfEd9nE7w-1; Mon, 02 Aug 2021 11:22:42 -0400 X-MC-Unique: irn-g6eVOH2OwrfEd9nE7w-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 850548AAC60 for ; Mon, 2 Aug 2021 15:22:40 +0000 (UTC) Received: from t480s.redhat.com (unknown [10.39.193.190]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4D9475C1C2; Mon, 2 Aug 2021 15:22:39 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v1] softmmu/physmem: fix wrong assertion in qemu_ram_alloc_internal() Date: Mon, 2 Aug 2021 17:22:38 +0200 Message-Id: <20210802152238.10783-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.701, 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_H3=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: Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Peter Xu , David Hildenbrand Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When adding RAM_NORESERVE, we forgot to remove the old assertion when adding the updated one, most probably when reworking the patches or rebasing. We can easily crash QEMU by adding -object memory-backend-ram,id=mem0,size=500G,reserve=off to the QEMU cmdline: qemu-system-x86_64: ../softmmu/physmem.c:2146: qemu_ram_alloc_internal: Assertion `(ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE | RAM_PREALLOC)) == 0' failed. Fix it by removing the old assertion. Fixes: 8dbe22c6868b ("memory: Introduce RAM_NORESERVE and wire it up in qemu_ram_mmap()") Cc: Paolo Bonzini Cc: Peter Xu Cc: Philippe Mathieu-Daudé Signed-off-by: David Hildenbrand --- softmmu/physmem.c | 1 - 1 file changed, 1 deletion(-) diff --git a/softmmu/physmem.c b/softmmu/physmem.c index 3c1912a1a0..2e18947598 100644 --- a/softmmu/physmem.c +++ b/softmmu/physmem.c @@ -2143,7 +2143,6 @@ RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size, RAMBlock *new_block; Error *local_err = NULL; - assert((ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE | RAM_PREALLOC)) == 0); assert((ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE | RAM_PREALLOC | RAM_NORESERVE)) == 0); assert(!host ^ (ram_flags & RAM_PREALLOC)); -- 2.31.1