From nobody Sun Feb 8 08:19:51 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1647952374200804.4116930953487; Tue, 22 Mar 2022 05:32:54 -0700 (PDT) Received: from localhost ([::1]:45830 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nWdgx-0001WS-KR for importer@patchew.org; Tue, 22 Mar 2022 08:32:53 -0400 Received: from eggs.gnu.org ([209.51.188.92]:33942) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nWdGR-0002Yg-KG for qemu-devel@nongnu.org; Tue, 22 Mar 2022 08:05:27 -0400 Received: from [2a00:1450:4864:20::336] (port=51772 helo=mail-wm1-x336.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nWdGQ-0007zm-0j for qemu-devel@nongnu.org; Tue, 22 Mar 2022 08:05:27 -0400 Received: by mail-wm1-x336.google.com with SMTP id q20so10649539wmq.1 for ; Tue, 22 Mar 2022 05:05:25 -0700 (PDT) Received: from localhost.localdomain (198.red-83-50-65.dynamicip.rima-tde.net. [83.50.65.198]) by smtp.gmail.com with ESMTPSA id r13-20020adfbb0d000000b00203e0efdd3bsm15376668wrg.107.2022.03.22.05.05.23 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 22 Mar 2022 05:05:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LsogzIW20PFbxNVUsODKUNH/SwjRh3rmWCB3ikdFeq8=; b=LNuU/fRaR5WkXZ8+KarznGMNy6S5Sn0lf0qOij6gVQfMzGs6HWGARVSb4Fa3rpv/Ef wUDqxkDuoTiY7YhLRFbll+aGhgyzIZfja8j4tpidxMyHwxI4I+SH4Kh0p+J/UjxE6zbo sKzd5ay5ymu0E7JLzDcYT5JX6rOZYJWrSK87IsDqB6Bpx4+nl8EGc9IaJBh6O+xR+y49 FcErGEus8P91TWOkmU5VG4RL2ZkNujDHhlcwSrfEreqte70svS9qlOaVXC6EKdMVrzcK S+8MwTpSnK9iTlyjNYK5xrEW2PNAxxoReIYvh1QT/0f1ngGsxaCV6An9R+1uq15pEO7T Zmmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LsogzIW20PFbxNVUsODKUNH/SwjRh3rmWCB3ikdFeq8=; b=qRVMiQHjIXcSqVei/wS6iY9c8b0Olz4awrJLGh2hZ1zzK3Ppy5VDroevHpxHlVlV51 gGlybxnVtFDvZeSBUYDLFHfRAoyFgxkrRa7SB1I6iw10mqPv5c2mmkmB0qpYNgD1MP5N vngv1a6C4d/yA4OMyZHDTckVWF1RP0HVhkOuDiGOk3QPYsUXFYX22qpkWRkuH3rzjyZs AUeyfBDvrN9kaDMd39tpVxSiFgPjOlRUbSkVJeL5eSfb0xpNdiHIW0kOJ86XWHmsEoLy HbAxpOY+6SsU2Cm81F2Qh0uoWfp7HV4oMIpXiuB8w+J3wN/r4KXaGKyVCmbdO9/It+bz nPrQ== X-Gm-Message-State: AOAM5336Vpvvvfc/rYn46BBdWQXVEzZ6oAmPeVb+5Gp5jSafLVyZFou5 +UWDJ2x7flJBGafpX+xrMxsvy0fdj4g= X-Google-Smtp-Source: ABdhPJwpGb8MYLFgQMP5JIu70aj+GrxjBxenjonIHryZ3l2jiFc0vhUI6qyrJHXnBszicHTyorRoUg== X-Received: by 2002:a7b:c14d:0:b0:38c:801a:a8b3 with SMTP id z13-20020a7bc14d000000b0038c801aa8b3mr3352236wmi.40.1647950724424; Tue, 22 Mar 2022 05:05:24 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [RFC PATCH-for-7.0 v4] target/i386/kvm: Free xsave_buf when destroying vCPU Date: Tue, 22 Mar 2022 13:05:22 +0100 Message-Id: <20220322120522.26200-1-philippe.mathieu.daude@gmail.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::336 (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::336; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x336.google.com X-Spam_score_int: 23 X-Spam_score: 2.3 X-Spam_bar: ++ X-Spam_report: (2.3 / 5.0 requ) AC_FROM_MANY_DOTS=2.996, BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Marcelo Tosatti , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , kvm@vger.kernel.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1647952377738100001 From: Philippe Mathieu-Daud=C3=A9 Fix vCPU hot-unplug related leak reported by Valgrind: =3D=3D132362=3D=3D 4,096 bytes in 1 blocks are definitely lost in loss re= cord 8,440 of 8,549 =3D=3D132362=3D=3D at 0x4C3B15F: memalign (vg_replace_malloc.c:1265) =3D=3D132362=3D=3D by 0x4C3B288: posix_memalign (vg_replace_malloc.c:1= 429) =3D=3D132362=3D=3D by 0xB41195: qemu_try_memalign (memalign.c:53) =3D=3D132362=3D=3D by 0xB41204: qemu_memalign (memalign.c:73) =3D=3D132362=3D=3D by 0x7131CB: kvm_init_xsave (kvm.c:1601) =3D=3D132362=3D=3D by 0x7148ED: kvm_arch_init_vcpu (kvm.c:2031) =3D=3D132362=3D=3D by 0x91D224: kvm_init_vcpu (kvm-all.c:516) =3D=3D132362=3D=3D by 0x9242C9: kvm_vcpu_thread_fn (kvm-accel-ops.c:40) =3D=3D132362=3D=3D by 0xB2EB26: qemu_thread_start (qemu-thread-posix.c= :556) =3D=3D132362=3D=3D by 0x7EB2159: start_thread (in /usr/lib64/libpthrea= d-2.28.so) =3D=3D132362=3D=3D by 0x9D45DD2: clone (in /usr/lib64/libc-2.28.so) Reported-by: Mark Kanda Signed-off-by: Philippe Mathieu-Daud=C3=A9 Tested-by: Mark Kanda --- Based on a series from Mark: https://lore.kernel.org/qemu-devel/20220321141409.3112932-1-mark.kanda@orac= le.com/ RFC because currently no time to test --- target/i386/kvm/kvm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index ef2c68a6f4..e93440e774 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -2072,6 +2072,8 @@ int kvm_arch_destroy_vcpu(CPUState *cs) X86CPU *cpu =3D X86_CPU(cs); CPUX86State *env =3D &cpu->env; =20 + g_free(env->xsave_buf); + if (cpu->kvm_msr_buf) { g_free(cpu->kvm_msr_buf); cpu->kvm_msr_buf =3D NULL; --=20 2.35.1