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b=oUiXfXRGMzDrLRdd6T0Oich0vIauJ1IxXJ1dFn9HNlQS7VRbIEYQoO5icKIFbDYQr FIesjkf53ezMftVt9AD4US0AhPM55AOt/3/t0+EPXznJHtv46pzaI/tqJWeBBhawhp ah2Z+RrmBGaLz/vTFwdBuZRRAC5Yx6UswFArajHFusFtCw7BjkTb1Z9G5ygQztzj0X oZQ+pC6lBBtSH80vJoKzQmhxC4Xu7t4+iMh9oIXUuwMnMNQ53p4tBhIuK3Lh6et0NY 42k7EbDFannFvNeheyUQyuk+7awK7cJqVO7kQvbL6Ly+M4C2cMDqvLbMOR6aJBA5/j DOKbg8gShIJOQ== Message-ID: <12f80449-9d6c-4fb7-bcc4-e7d38e868da2@kernel.org> Date: Wed, 4 Nov 2026 15:35:16 +0100 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] tools/mm: add hwpoison-panic tool To: Breno Leitao , Andrew Morton , Miaohe Lin , Naoya Horiguchi , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: SJ Park , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, kernel-team@meta.com References: <20260813-memory_failure_rewrite_test-v3-1-f9fb6542cbff@debian.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20260813-memory_failure_rewrite_test-v3-1-f9fb6542cbff@debian.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: s3arbfxkobr3q4xxr6qcdaj453tf5wap X-Rspam-User: X-Spam-Status: No, score=-7.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=4.0.1 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 1A5B3A0004 X-HE-Tag: 1793802926-737196 X-HE-Meta: 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 MjRHTWqe N7I8wVVqlI95bq7l0gZRFw+c+/Iz9ySn21FGg8DNEN48i+DiBd/oHGZJkBstNakw3myifCDlYj5xoNQNWO8pErKNXPEgpTsNekhnKFRvpKikJ7mG3Hs9n7T1Cd1jsghnibH0of5kaGmNoHOvpMTIqefaTq6jMLp1K9IEZ9iTHCYI1eJvikl4F7uQEpTtL4tkh/h6bghU4lFcE8cdN5nm2GIcC+t+Yl8Y1VEkEEtjFg+9PO8LHgoXdGyaeQWpbxTtF6t73FV+yxeyTkF8dufIrWnFEsrPouT0WpgqZ89I0R+P2eLRCw6pWL7OSLT4GVwnPVrYaQ2zPAyKnlD4vY1pXZoQ13Q== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 8/13/26 13:45, Breno Leitao wrote: > Add a tool that enables the vm.panic_on_unrecoverable_memory_failure > sysctl, picks a kernel-owned PFN and writes its physical address to > hard_offline_page. Three page kinds are selectable with -k: rodata > (default), slab or pgtable. In all cases the host should panic. > > Example: > > # ./hwpoison-panic -k slab --yes-panic-my-kernel > injecting hwpoison at phys 0x100032000 (pfn 0x100032, kind=slab) > expecting kernel panic: 'Memory failure: : unrecoverable page' > > In dmesg, you will see: > > Memory failure: 0x100032: unhandlable page. > Memory failure: 0x100032: recovery action for reserved kernel page: Ignored > Kernel panic - not syncing: Memory failure: 0x100032: unrecoverable page > > This lives in tools/mm rather than selftests/mm because every successful > run crashes the machine, which is not something to run from CI. > > The --yes-panic-my-kernel argument is required so an accidental > invocation does not take the box down. This is not upstream yet, right? Anything missing or is this good to go in? -- Cheers, David