From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 64C7749890A; Wed, 9 Sep 2026 14:02:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788962548; cv=none; b=fPmmNZAlniLECNw9LMDXOBEslU4/H9LdyjF5NYW2MtA05rsZ6ASaqs0sg+A5KY8v6QAPiz+MBimdmlaIZW099foUc8JydllTtphSdzEj4rhdSNYLNAif0h8RUavC2jWx3s43SskevyvWlDWIN2p60td+9rdsvjYbtdIqE9ikJik= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788962548; c=relaxed/simple; bh=nu6b9LVYsW56XlqqmN7fk8KZj07bH/CZ63NRtypHCdM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gsHBf7Oy2lrbBlnxDRirLOtuRQYAYJG8GiQmkG/k/GVcG4RIdybKs3KqZv9XtKgUrdq9R/O3vUVF9djA5hwd0LV1S8mQ8bMxKneUtJQ00qaX5HimmE1bMTUmIuTbR2NUNvw7ooY6p9tkoVCroHepnACJtjATl+PYMIhBB1mb790= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=lhwyDbmW; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="lhwyDbmW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB99E1F00A3A; Wed, 9 Sep 2026 14:02:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788962547; bh=RcLjM8lIzhnXrnB6gWiTYycyhjHoSrWKW8Ple81dTGo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=lhwyDbmWh/oIt6Usy/TyMtqDHTRDxu2PIKHdT8mZdeOU+F57IkxYCa4PhzoIw2hAD ynL/f1YZASeLAvRe71NFM2mHQWPJZ0bhZddQ1Si9/3CLuh5Tzg2q1+aqK5kGPZCCVa gP5zeet5Mo790edelgNeGzQfPtah5KJUw78QEd/4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Bibo Mao , Huacai Chen Subject: [PATCH 7.2 327/556] LoongArch: KVM: Fix uninitialized stack variable issue with dmsintc Date: Wed, 9 Sep 2026 15:40:07 +0200 Message-ID: <20260909134242.160092160@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260909134230.441546314@linuxfoundation.org> References: <20260909134230.441546314@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bibo Mao commit 81aa3a58b542ed88819115c80a17acd86eacb89d upstream. Variable vector[] is declared on stack in function dmsintc_inject_irq() and sometimes it is used without initialized. Here fix this issue. Cc: stable@vger.kernel.org Fixes: 03de5eecb0f0 ("LoongArch: KVM: Add DMSINTC inject msi to vCPU") Signed-off-by: Bibo Mao Signed-off-by: Huacai Chen Signed-off-by: Greg Kroah-Hartman --- arch/loongarch/kvm/intc/dmsintc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/arch/loongarch/kvm/intc/dmsintc.c +++ b/arch/loongarch/kvm/intc/dmsintc.c @@ -19,8 +19,7 @@ void dmsintc_inject_irq(struct kvm_vcpu for (i = 0; i < 4; i++) { old = atomic64_read(&(ds->vector_map[i])); - if (old) - vector[i] = atomic64_xchg(&(ds->vector_map[i]), 0); + vector[i] = old ? atomic64_xchg(&(ds->vector_map[i]), 0) : 0; } if (vector[0]) {