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: 11066043 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 A14471399 for ; Tue, 30 Jul 2019 16:01:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9154328704 for ; Tue, 30 Jul 2019 16:01:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8569628783; Tue, 30 Jul 2019 16:01:59 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ACCF4287B1 for ; Tue, 30 Jul 2019 16:01:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730281AbfG3QB5 (ORCPT ); Tue, 30 Jul 2019 12:01:57 -0400 Received: from relay.sw.ru ([185.231.240.75]:41022 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729885AbfG3QB5 (ORCPT ); Tue, 30 Jul 2019 12:01:57 -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 Cc: kvm@vger.kernel.org, berto@igalia.com, mdroth@linux.vnet.ibm.com, armbru@redhat.com, ehabkost@redhat.com, rth@twiddle.net, mtosatti@redhat.com, pbonzini@redhat.com, den@openvz.org, vsementsov@virtuozzo.com, andrey.shinkevich@virtuozzo.com Subject: [PATCH 3/3] i386/kvm: initialize struct at full before ioctl call 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> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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]; }