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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Shuah Khan , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH net v2 2/2] selftests: net: add test for IPv4 route with loopback IPv6 nexthop Message-ID: <20260302083558.GB814377@shredder> References: <20260302051132.66314-1-jiayuan.chen@linux.dev> <20260302051132.66314-3-jiayuan.chen@linux.dev> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260302051132.66314-3-jiayuan.chen@linux.dev> X-ClientProxiedBy: TL2P290CA0004.ISRP290.PROD.OUTLOOK.COM (2603:1096:950:2::13) To DS0PR12MB7900.namprd12.prod.outlook.com (2603:10b6:8:14e::10) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS0PR12MB7900:EE_|MW4PR12MB7168:EE_ X-MS-Office365-Filtering-Correlation-Id: 11baca6e-e499-436e-9d47-08de7836c104 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|366016; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?ws/bJdayc4g+TiAaLU7zkAaawvIBYfKW0u3GphRo9bnq58ty6AbQa8ZtBu4j?= =?us-ascii?Q?M9ws79yJwAlLhFknmNQfaq5QTd5v3+/SSrFHoqOaQUr+jj5kSKFpcQ6ft6K6?= =?us-ascii?Q?tpYBAvLMr3a3vsJVFloIU2mVGZ6QmNa5lKQwi9QZCNO/OwolnD9miMx0mwoO?= =?us-ascii?Q?D+CvkFXSFXtEKZKry1Jy8QVEyQrBWmAlZs1mIkFw+JIxbhOB6F/7vjvnGcAk?= =?us-ascii?Q?2fVkV0HpbBaww6SvUP5fj0vQ44selYljZptw2YX/wlkt7Dfggvz787E/QI5o?= =?us-ascii?Q?kcplsMUQFc0Jw64XXHAuYhCcRKKS5Db8h7lV3ATOvau4IXepuTSytyBw3Y4y?= =?us-ascii?Q?WtHN9G3qrcSlKxdwOOUfptrP6mM2RAaaary7+Xm9+69qaaiHm1tmkxTg5XDz?= =?us-ascii?Q?lBttPyyxh3O1X7TdNWvMK3Xh0fnbjDOUe2xLvxVkJCu52KA/Z6rrhCmSMtt/?= =?us-ascii?Q?WSSQEK//+v8H7sc3YvaI2J7WIHmC0oh3pUQkOh3Dqmfp0tVSulz01lAAotTv?= =?us-ascii?Q?dav3oJKBZMGO/mqFfGBTlsLNQ3o107d3xsMVfVkjsx3eIaE898uI7LG/Komq?= =?us-ascii?Q?REq8eXU2+VxCC1GpgNQO8RxdSr8BC4OBqziwTjEidJ4OIqiBMa5n2YTWRSf8?= =?us-ascii?Q?zGzG1b1HeoC2Jf9PHaCfGghMLcL6hsUPLDQsE9ZMOsg3Wuv94PYI28DEoj1F?= =?us-ascii?Q?aLLaoJifZb7pOmdLeOzax2tlJQN03CkxubBh/O8z8c9n03B/EyQlbWK001C+?= =?us-ascii?Q?8C8h4fq4Css8xjyi0KUUVsLe0Etun7x1ZaPz9wHEQwYIPv03t39Hf8wrY9wn?= =?us-ascii?Q?AC0Td3Mu7h2eejsFzxTBbZdar+uZAsbXFKr74x+E+4RrwPTQcfw9OK0z1iqL?= =?us-ascii?Q?mJEbhxymOoEe99hrmZ/1oo8aF7dxH9kxKDuyVde0CuSd3TBlb4q0r3HxV8XY?= =?us-ascii?Q?gC+x7Thu/PZWk+VB8I9KiHUD4UBcXavl7JtK2FCJM6UDFP0wFIGuDJO0w3/x?= =?us-ascii?Q?iN3nfhmZ8a9DVwcfoThAOVDC6aj1XA95FlMfXoEFBjnLBi1vPyyqPRYACc56?= =?us-ascii?Q?brDs9R0jM9l9heL0qOXHBm6C57coQikbIjgLX+td9exkaQQKGZtsJTPiJ/Kw?= =?us-ascii?Q?4kfRllJBqzkk1rk1TyRbSiYYwWyN3uYAwkf4hYyA8BO3WCFSFQYlOJrDYnCV?= =?us-ascii?Q?vEWKeIumlTcwukQsc+vD3qEsiFQjfawmEu+Z56ekYZ1fXpoxiql6hBsNwtF2?= =?us-ascii?Q?mUmsimXkXnJHgObu0jiXNn6lYKKMLdDaITC8aDwZcDtAmdhu+k0gQxmH+1Yf?= =?us-ascii?Q?QJH3MV5W5AETE8Ajtk84b3jIVAwuOqnTiPZvaPzVypRc26djrch9XsMZI4UR?= =?us-ascii?Q?5uZ8BTP1agmnzOyTQ3FOCDUxk8GhMoxaMc5U1BlvYZz8aDX5Ps4LYFymEl2+?= =?us-ascii?Q?ICsnlIpRNL8dXlgpN+eyLXd1u/Ygnxvq1L9ZojHI1azEZKrt9m0cjmD6Jx0l?= =?us-ascii?Q?RbhBvTn79TnJEURUifno5pFhbkRIeM1fPDHORmcq61iIRYLIOAt8PcBsSXDo?= =?us-ascii?Q?l+eQpFvrBr4VlAYLW4jnc+36iwAJpUHksJy5LHvnKTsl8PFURy/9FOqmrd9x?= =?us-ascii?Q?lRvUrmVeyLcsmkG54l0JWorUgySHnFkljag5t4A5rgezDLbzoBbAVJyCdfYR?= =?us-ascii?Q?XxbiEXuCFS7cky3EYKj3zfcWfZlsHZ7mrPP5YWSHFRSnM9jPk0nVEO/pPojV?= =?us-ascii?Q?dGGDJl4WnA=3D=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 11baca6e-e499-436e-9d47-08de7836c104 X-MS-Exchange-CrossTenant-AuthSource: DS0PR12MB7900.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Mar 2026 08:36:09.6244 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ELf1YgEV91bw3BeyRvH+tM+7HU2PGjdfoNOkAjouvdMLQEWQQRVrtAB6fYfiZYetF07FL14LUMqoK2kfO2lEew== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB7168 On Mon, Mar 02, 2026 at 01:11:29PM +0800, Jiayuan Chen wrote: > From: Jiayuan Chen > > Add a regression test for a panic triggered when an IPv4 route > references a loopback IPv6 nexthop object. Without the fix, this > sequence causes a NULL pointer dereference in __mkroute_output() > because nhc_pcpu_rth_output is not allocated for the nexthop. > > ./fib_nexthops.sh > Tests passed: 249 > Tests failed: 0 > Tests skipped: 2 > > Signed-off-by: Jiayuan Chen Reviewed-by: Ido Schimmel