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Sun, 11 Jan 2026 09:17:07 -0800 From: Gal Pressman To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , CC: Shuah Khan , Willem de Bruijn , "Petr Machata" , Coco Li , , Gal Pressman , Nimrod Oren Subject: [PATCH net-next 2/2] selftests: drv-net: fix RPS mask handling for high CPU numbers Date: Sun, 11 Jan 2026 19:16:58 +0200 Message-ID: <20260111171658.179286-3-gal@nvidia.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20260111171658.179286-1-gal@nvidia.com> References: <20260111171658.179286-1-gal@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9D6:EE_|SA3PR12MB9160:EE_ X-MS-Office365-Filtering-Correlation-Id: 3f9933ec-7c79-43ce-374f-08de5135476a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|82310400026|36860700013|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?gEYENVVPRBvAL5/RNHirTN/BMRV2XAMH9wc47QIYPJlCfeDCbee1MUXrEq1H?= =?us-ascii?Q?5rZca6CK6ldCM9oLR5gAwK9UIU4j7Hz5iQMiR5pW3cJRZ1z6YCEXuVpGSTP2?= =?us-ascii?Q?0g8TV5E4/kCwnYPF7vkyny1fgjb6oYa8YEtsDAZAlZSNKHFdHCAOa06KY6bj?= =?us-ascii?Q?wJ814r0B7F56SjVpZTpt8wvVvj7RZWmGEJFQZwoFAximNXyUElEqiVfRZEw/?= =?us-ascii?Q?Wzif5mnZ7tMj+l00/mpnfk88C8cmhuMsc7atZJbFd6/TY/4XXKbLifoO0vB2?= =?us-ascii?Q?ut3cMHwaJeIB2Qgkn495Cg5bZi+yePOjr3XjO6NJQL8zKGc9czun/sZylenI?= =?us-ascii?Q?2XomkiTQWaGFjjEb54L3ue1z1KfY9hDXXUQNaJQxLjeWbA2gM1nPbWRjMqd3?= =?us-ascii?Q?VqJm1alwr+QNqsmKt6ql1yg8GODHkXizZjF3jZsLZXoeKxpV6IOiQFN0g+iS?= =?us-ascii?Q?ZY/pFSzFs4u/YdHGSQ5Wl8ccYdUtxhTswKehMBx8r4KGV/V6S5mt+NVuKTeM?= =?us-ascii?Q?Yv9MC1BZ08l5v8FUByyql2ryXFZlkCOP+LJ5lfVqV+BILudxjuM3CzL5XQd4?= =?us-ascii?Q?u074i+WDPkybZlP7pFbphF2Q4lYZqfA1giCoJSRCsktTSEjRiNZOqrjjboN5?= =?us-ascii?Q?nD+QD21GFQu1RtM4JJlSr5EKF5Ay4wOBQwx0YN2wy5ElN/QEIa84EwpaaB6n?= =?us-ascii?Q?JwctSdgsQgd75ppDPM6emRdH1AFtFh2feXAtKmQd+ts7DnqN0cHPORmM2vrl?= =?us-ascii?Q?zrpE8EYnH0LTGLgm3h+9XPG6JzOBpkg6xkovlrNC/6X2P11WjEZpvxFYob1M?= =?us-ascii?Q?VEI2wETR/nfh0otJ6KYBFz432JRv4XpK6jENmkmDfhzwDusqJtvh2YjZY6SG?= =?us-ascii?Q?5p2EvwuIFDMMyKGzsFowVVBAFsE7yKpfTzPEWQtG4rAnmgYMq71+yPiLW805?= =?us-ascii?Q?O16Hre2hPQMTGwj9RR/vu4O0NEUj7NCNTIVj1paJjDx7VjiINhPDrSjKZ3BK?= =?us-ascii?Q?JpXqvKYJfisq2//sA15+GOMCEIPYZa9mtcaDtNTZZzG3xkLDdefI0STbBpBf?= =?us-ascii?Q?Ew4KBUT6X9XbCMkVIpfPr3P/65P2zHAm03v/TYctD8AYZC4cy19he/77HqHt?= =?us-ascii?Q?XDfxOD9iiiq4gJ+T50tEef6LSjZHsbkm54A0OBOkhQcbjGzLllZx/vW8j178?= =?us-ascii?Q?oNR/sNfRDLSKIZFsxoEk3wdvzpcfs6gWoEt/cTV0fec3U/CiGkCBPrrkpBRI?= =?us-ascii?Q?x2RzDqQLb25bzWSGpqt59fhQHdEtAiQfUgBtxr6doygdEvD/rhdIrNzXE8XU?= =?us-ascii?Q?iLSEvpWVlBCMPWvnEy4UYIPdqPr1bEzHLLUJEQy+ahto4PbsWgA6ySPKg60N?= =?us-ascii?Q?eoCIVOJR74yne3YL+yppJ3QZ5QO/xW5Ha+06o7QdutKJFNgU/7UVV+0Gb8I1?= =?us-ascii?Q?qB7soOCTEWdw8uvwmSxEtZPmFnnSo3UQCqWxA4iXnl4/2ZAUPX49dgdjwC/x?= =?us-ascii?Q?EJawdQvmyVNx/DeK10MOSmvZLM1Z1GcXVF33TmbZxNFVLHXdk0z6xWPDUGwW?= =?us-ascii?Q?43vHnLy2F92p9psxkNo=3D?= X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230040)(7416014)(376014)(82310400026)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jan 2026 17:17:20.5516 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3f9933ec-7c79-43ce-374f-08de5135476a X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9D6.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB9160 The RPS bitmask bounds check uses ~(RPS_MAX_CPUS - 1) which equals ~15 = 0xfff0, only allowing CPUs 0-3. Change the mask to ~((1UL << RPS_MAX_CPUS) - 1) = ~0xffff to allow CPUs 0-15. Fixes: 5ebfb4cc3048 ("selftests/net: toeplitz test") Reviewed-by: Nimrod Oren Signed-off-by: Gal Pressman --- tools/testing/selftests/drivers/net/hw/toeplitz.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/toeplitz.c b/tools/testing/selftests/drivers/net/hw/toeplitz.c index d23b3b0c20a3..285bb17df9c2 100644 --- a/tools/testing/selftests/drivers/net/hw/toeplitz.c +++ b/tools/testing/selftests/drivers/net/hw/toeplitz.c @@ -485,8 +485,8 @@ static void parse_rps_bitmap(const char *arg) bitmap = strtoul(arg, NULL, 0); - if (bitmap & ~(RPS_MAX_CPUS - 1)) - error(1, 0, "rps bitmap 0x%lx out of bounds 0..%lu", + if (bitmap & ~((1UL << RPS_MAX_CPUS) - 1)) + error(1, 0, "rps bitmap 0x%lx out of bounds, max cpu %lu", bitmap, RPS_MAX_CPUS - 1); for (i = 0; i < RPS_MAX_CPUS; i++) -- 2.40.1