From patchwork Tue Jul 30 16:01:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 11066053 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3C7801399 for ; Tue, 30 Jul 2019 16:05:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2EA6528780 for ; Tue, 30 Jul 2019 16:05:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 233BF2883F; Tue, 30 Jul 2019 16:05:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CDFB328780 for ; Tue, 30 Jul 2019 16:05:17 +0000 (UTC) Received: from localhost ([::1]:34404 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hsUcn-0001qD-5v for patchwork-qemu-devel@patchwork.kernel.org; Tue, 30 Jul 2019 12:05:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49227) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hsUZd-0005Rs-RH for qemu-devel@nongnu.org; Tue, 30 Jul 2019 12:02:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hsUZb-0005Zm-Hz for qemu-devel@nongnu.org; Tue, 30 Jul 2019 12:02:01 -0400 Received: from relay.sw.ru ([185.231.240.75]:53310) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hsUZZ-0005Y8-Mj; Tue, 30 Jul 2019 12:01:59 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay.sw.ru with esmtp (Exim 4.92) (envelope-from ) id 1hsUZT-0001RG-68; Tue, 30 Jul 2019 19:01:51 +0300 From: Andrey Shinkevich To: qemu-devel@nongnu.org, qemu-block@nongnu.org Date: Tue, 30 Jul 2019 19:01:38 +0300 Message-Id: <1564502498-805893-4-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1564502498-805893-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1564502498-805893-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH 3/3] i386/kvm: initialize struct at full before ioctl call 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: vsementsov@virtuozzo.com, berto@igalia.com, ehabkost@redhat.com, kvm@vger.kernel.org, mtosatti@redhat.com, mdroth@linux.vnet.ibm.com, armbru@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org, pbonzini@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Not the whole structure is initialized before passing it to the KVM. Reduce the number of Valgrind reports. Signed-off-by: Andrey Shinkevich Reviewed-by: Philippe Mathieu-Daudé --- target/i386/kvm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index dbbb137..ed57e31 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -190,6 +190,7 @@ static int kvm_get_tsc(CPUState *cs) return 0; } + memset(&msr_data, 0, sizeof(msr_data)); msr_data.info.nmsrs = 1; msr_data.entries[0].index = MSR_IA32_TSC; env->tsc_valid = !runstate_is_running(); @@ -1706,6 +1707,7 @@ int kvm_arch_init_vcpu(CPUState *cs) if (has_xsave) { env->xsave_buf = qemu_memalign(4096, sizeof(struct kvm_xsave)); + memset(env->xsave_buf, 0, sizeof(struct kvm_xsave)); } max_nested_state_len = kvm_max_nested_state_length(); @@ -3477,6 +3479,7 @@ static int kvm_put_debugregs(X86CPU *cpu) return 0; } + memset(&dbgregs, 0, sizeof(dbgregs)); for (i = 0; i < 4; i++) { dbgregs.db[i] = env->dr[i]; }