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GET /api/patches/2195179/?format=api
{ "id": 2195179, "url": "http://patchwork.ozlabs.org/api/patches/2195179/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20260210140245.191424-2-massimiliano.pellizzer@canonical.com/", "project": { "id": 15, "url": "http://patchwork.ozlabs.org/api/projects/15/?format=api", "name": "Ubuntu Kernel", "link_name": "ubuntu-kernel", "list_id": "kernel-team.lists.ubuntu.com", "list_email": "kernel-team@lists.ubuntu.com", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260210140245.191424-2-massimiliano.pellizzer@canonical.com>", "list_archive_url": null, "date": "2026-02-10T14:02:44", "name": "[SRU,J,v2,1/2] KVM: arm64: vgic: Add a non-locking primitive for kvm_vgic_vcpu_destroy()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f8d101aa887ab84bf86f978cca84142a46bc4a00", "submitter": { "id": 89057, "url": "http://patchwork.ozlabs.org/api/people/89057/?format=api", "name": "Massimiliano Pellizzer", "email": "massimiliano.pellizzer@canonical.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20260210140245.191424-2-massimiliano.pellizzer@canonical.com/mbox/", "series": [ { "id": 491682, "url": "http://patchwork.ozlabs.org/api/series/491682/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/list/?series=491682", "date": "2026-02-10T14:02:43", "name": "CVE-2025-37849", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/491682/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2195179/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2195179/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<kernel-team-bounces@lists.ubuntu.com>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (4096-bit key;\n unprotected) header.d=canonical.com header.i=@canonical.com\n header.a=rsa-sha256 header.s=20251003 header.b=aIwoZNGM;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com\n (client-ip=185.125.189.65; helo=lists.ubuntu.com;\n envelope-from=kernel-team-bounces@lists.ubuntu.com;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.ubuntu.com (lists.ubuntu.com [185.125.189.65])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4f9NZS412Gz1xtV\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 11 Feb 2026 01:03:28 +1100 (AEDT)", "from localhost ([127.0.0.1] helo=lists.ubuntu.com)\n\tby lists.ubuntu.com with esmtp (Exim 4.86_2)\n\t(envelope-from <kernel-team-bounces@lists.ubuntu.com>)\n\tid 1vpoKl-0000lo-PX; Tue, 10 Feb 2026 14:03:19 +0000", "from smtp-relay-internal-1.internal ([10.131.114.114]\n helo=smtp-relay-internal-1.canonical.com)\n by lists.ubuntu.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.86_2) (envelope-from <massimiliano.pellizzer@canonical.com>)\n id 1vpoKk-0000lR-Iz\n for kernel-team@lists.ubuntu.com; Tue, 10 Feb 2026 14:03:18 +0000", "from mail-wm1-f69.google.com (mail-wm1-f69.google.com\n [209.85.128.69])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by smtp-relay-internal-1.canonical.com (Postfix) with ESMTPS id 6DD333F2BA\n for <kernel-team@lists.ubuntu.com>; Tue, 10 Feb 2026 14:03:18 +0000 (UTC)", "by mail-wm1-f69.google.com with SMTP id\n 5b1f17b1804b1-47ee432070aso39622175e9.1\n for <kernel-team@lists.ubuntu.com>; Tue, 10 Feb 2026 06:03:18 -0800 (PST)", "from framework (net-93-66-82-32.cust.vodafonedsl.it. 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charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Errors-To": "kernel-team-bounces@lists.ubuntu.com", "Sender": "\"kernel-team\" <kernel-team-bounces@lists.ubuntu.com>" }, "content": "From: Marc Zyngier <maz@kernel.org>\n\nAs we are going to need to call into kvm_vgic_vcpu_destroy() without\nprior holding of the slots_lock, introduce __kvm_vgic_vcpu_destroy()\nas a non-locking primitive of kvm_vgic_vcpu_destroy().\n\nCc: stable@vger.kernel.org\nSigned-off-by: Marc Zyngier <maz@kernel.org>\nLink: https://lore.kernel.org/r/20231207151201.3028710-3-maz@kernel.org\nSigned-off-by: Oliver Upton <oliver.upton@linux.dev>\n(backported from commit d26b9cb33c2d1ba68d1f26bb06c40300f16a3799)\n[mpellizzer: backported considering\n * The change in locking mechanism introduced by f00327731131d\n (“KVM: arm64: Use config_lock to protect vgic state”)\n * The refactoring introduced by 01ad29d224ff\n (“KVM: arm64: vgic: Simplify kvm_vgic_destroy()”)]\nCVE-2025-37849\nSigned-off-by: Massimiliano Pellizzer <massimiliano.pellizzer@canonical.com>\n---\n arch/arm64/kvm/vgic/vgic-init.c | 13 +++++++++++--\n 1 file changed, 11 insertions(+), 2 deletions(-)", "diff": "diff --git a/arch/arm64/kvm/vgic/vgic-init.c b/arch/arm64/kvm/vgic/vgic-init.c\nindex 1ccbb19fad77a..bb00bf31636a5 100644\n--- a/arch/arm64/kvm/vgic/vgic-init.c\n+++ b/arch/arm64/kvm/vgic/vgic-init.c\n@@ -352,7 +352,7 @@ static void kvm_vgic_dist_destroy(struct kvm *kvm)\n \t\tvgic_v4_teardown(kvm);\n }\n \n-void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu)\n+static void __kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu)\n {\n \tstruct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;\n \n@@ -369,6 +369,15 @@ void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu)\n \t}\n }\n \n+void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu)\n+{\n+\tstruct kvm *kvm = vcpu->kvm;\n+\n+\tmutex_lock(&kvm->lock);\n+\t__kvm_vgic_vcpu_destroy(vcpu);\n+\tmutex_unlock(&kvm->lock);\n+}\n+\n /* To be called with kvm->lock held */\n static void __kvm_vgic_destroy(struct kvm *kvm)\n {\n@@ -378,7 +387,7 @@ static void __kvm_vgic_destroy(struct kvm *kvm)\n \tvgic_debug_destroy(kvm);\n \n \tkvm_for_each_vcpu(i, vcpu, kvm)\n-\t\tkvm_vgic_vcpu_destroy(vcpu);\n+\t\t__kvm_vgic_vcpu_destroy(vcpu);\n \n \tkvm_vgic_dist_destroy(kvm);\n }\n", "prefixes": [ "SRU", "J", "v2", "1/2" ] }