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Miller" , Eric Dumazet , Jakub Kicinski , netdev@vger.kernel.org, Paolo Abeni , Alex Lazar , Cosmin Ratiu , Dragos Tatulea , Gal Pressman , Kees Cook , Leon Romanovsky , open list , linux-rdma@vger.kernel.org, Mark Bloch , Richard Cochran , Saeed Mahameed , Shahar Shitrit References: <20261015080218.1102172-1-tariqt@nvidia.com> <179205178078.408196.12399315538524843906@kernel.org> Content-Language: en-US From: Carolina Jubran In-Reply-To: <179205178078.408196.12399315538524843906@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: TL2P290CA0027.ISRP290.PROD.OUTLOOK.COM (2603:1096:950:3::11) To DM4PR12MB9734.namprd12.prod.outlook.com (2603:10b6:8:225::23) Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM4PR12MB9734:EE_|SN7PR12MB7936:EE_ X-MS-Office365-Filtering-Correlation-Id: a73115e3-4094-4af0-6ff1-08df2a9ffd00 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|1800799024|7416014|366016|376014|261009223027099003|10067099003|11063799006|4143699003|6133799003|56012099006|18002099003|22082099003; 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This series looks like a fix, but its > commit messages seem to be missing some information: > > - How the issue was discovered, e.g. hit in production, hit during > development, syzbot report, manual code inspection, LLM or static > analysis tool scan. > > - Whether the issue was actually triggered, or is only theoretical > (e.g. found by code inspection). If it was triggered please include > the symptoms, like the stack trace or error messages. > > Please do not repost the series just to address the above. Instead, > reply to this email with the missing information, so that reviewers > can take it into account. If the series needs another revision for > other reasons, please include the information in the commit messages > then. > > The evaluation is done by an LLM so it may be wrong, if you think > that is the case please reply and explain. Hi, The issue was observed during our internal regression testing. The kernel reported: BUG: unable to handle page fault for address: 0000000000002ea8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 1a9bfc067 P4D 1a9bfc067 PUD 1a9bfd067 PMD 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           OE RIP: 0010:mlx5e_skb_cb_hwtstamp_handler+0x10c/0x140 [mlx5_core] RAX: 0000000000000000 CR2: 0000000000002ea8 Call Trace:   mlx5e_ptp_poll_ts_cq+0x228/0x5b0 [mlx5_core]   mlx5e_ptp_napi_poll+0xad/0x380 [mlx5_core]   ? mlx5e_napi_poll+0x750/0x7e0 [mlx5_core]   __napi_poll+0x30/0x200   net_rx_action+0x181/0x2e0   handle_softirqs+0xdb/0x340   __irq_exit_rcu+0xd9/0x100   irq_exit_rcu+0xe/0x20   common_interrupt+0xa4/0xb0 So far, the issue has only been observed during our regression testing, and I am still working on reproducing it reliably. Thanks, Carolina