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client-ip=165.204.84.17; helo=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.17) by SJ1PEPF000023CE.mail.protection.outlook.com (10.167.244.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.9052.8 via Frontend Transport; Fri, 22 Aug 2025 04:57:44 +0000 Received: from Satlexmb09.amd.com (10.181.42.218) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Thu, 21 Aug 2025 23:57:43 -0500 Received: from SATLEXMB04.amd.com (10.181.40.145) by satlexmb09.amd.com (10.181.42.218) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.1748.10; Thu, 21 Aug 2025 21:57:42 -0700 Received: from xhdharinit40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Thu, 21 Aug 2025 23:57:40 -0500 From: Harini T To: , CC: , , , Harini T Subject: [PATCH 2/3] mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop Date: Fri, 22 Aug 2025 10:27:31 +0530 Message-ID: <20250822045732.1068103-3-harini.t@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250822045732.1068103-1-harini.t@amd.com> References: <20250822045732.1068103-1-harini.t@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023CE:EE_|DM6PR12MB4073:EE_ X-MS-Office365-Filtering-Correlation-Id: 151183e5-5c87-4940-a919-08dde1386e9f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|82310400026|36860700013; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Aug 2025 04:57:44.3835 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 151183e5-5c87-4940-a919-08dde1386e9f X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023CE.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4073 Content-Type: text/plain; charset="utf-8" Fix mailbox cleanup loop that accesses array out-of-bounds by starting at num_boxes instead of numb_boxes-1 for 0-indexed arrays. Signed-off-by: Harini T --- drivers/mailbox/zynqmp-ipi-mailbox.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-= ipi-mailbox.c index bdcc6937ee30..3b806d1f89bb 100644 --- a/drivers/mailbox/zynqmp-ipi-mailbox.c +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c @@ -891,7 +891,7 @@ static void zynqmp_ipi_free_mboxes(struct zynqmp_ipi_pd= ata *pdata) xlnx_mbox_cleanup_sgi(pdata); =20 i =3D pdata->num_mboxes; - for (; i >=3D 0; i--) { + for (i--; i >=3D 0; i--) { ipi_mbox =3D &pdata->ipi_mboxes[i]; if (device_is_registered(&ipi_mbox->dev)) device_unregister(&ipi_mbox->dev); --=20 2.43.0