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b=UviKnrW8b38w66Xjwgy6NpjMrmWLlJnxvHlthoaf3uuOj38yJJRER5MT/dLsZEFjn a7BLRtHLcLwPp/zUwUexwwXoiiMcUOo+8MjRC2+GLmkHEynR267BAYdBRk6/O4ZSIo /6sRZaOmVCvpHkRnUnL5qt4eOqR6x0qdJo9Ia/8r9VD8RxYzJFH6vo7zldTc2nehep 4MeJG+4+TTCtQuCU5AZe1Xhk+pSODY8QoXbSvYKMo6CfCFzT69fCxycc3hiCNmYmGr 7DGEo/wPz/019+DDBqLZGeBj6epiY9yDFNJ7yD2ogDfkPHZpahMfqYDjSNdVHzcFpE MZ0shfUX2E8qQ== Message-ID: <237fa136-ff52-4e7c-830b-1ed8e985f2f1@kernel.org> Date: Thu, 12 Feb 2026 13:53:43 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [bug report] kernel BUG at mm/hugetlb.c:5868! triggered by blktests nvme/tcp nvme/029 To: Yi Zhang , Hannes Reinecke Cc: Jens Axboe , linux-block , "open list:NVM EXPRESS DRIVER" , Shinichiro Kawasaki , Daniel Wagner , Ming Lei , linux-mm@kvack.org, muchun.song@linux.dev, osalvador@suse.de References: <05281713-80b3-4199-8e76-672e84fcc33e@kernel.dk> 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: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: F22208000E X-Stat-Signature: 8y5zomm48xrfu6mq7bmthfou6dmaisnt X-Rspam-User: X-HE-Tag: 1770900831-577178 X-HE-Meta: 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 j6kyTXCb Xq7xZycCEDVHRo73mlI1aIEXITDqBWEY52uUCn5N+Uz9pqUwYrfkXyZ+bbcFzm0jGADjYN2N58Cl4xzoZ+FIr1GFkKSW2d3OMLrxJjngKm31skus+JGRCB6mdTbW8PeKAZc1gtMUiwIOyZWfXPlWL0/Kv9yKfNhS/3yIuDlR+Sp70/TUwIhsaFi45l177osMUIzT0u85LG9ba6rY0dJP74wY2vdeeAhJcWGjmnvCpYwlMZhNxZYxP7ONQ0MhRP3Mvf0wxgMnbQWiBnFqHvnezrXO9gWTDJ8kMJMmqDcckD93XUrb/6dXEKYjTaWuRP/jMHgxfBQC5FqwWVVp4Kn8hE511+piVvFJbf0U77IV+7GGDXAiOPYzrarVD9M8119RYLdVH X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 11/21/25 11:32, Yi Zhang wrote: > > > On Fri, Nov 21, 2025 at 3:44 PM Hannes Reinecke > wrote: > > On 11/20/25 16:18, Yi Zhang wrote: > > I did more testing today, and found that this issue cannot be > > reproduced if I don't set the nr_hugepages > > > > https://github.com/linux-blktests/blktests/blob/master/tests/ > nvme/029#L71 master/tests/nvme/029#L71> > > > > But is the inverse also true, namely _can_ you reproduce it when > nr_hugepages is set? > > Yes, it's now 100% reproduced in my environment. > CCed linux-mm@ Stumbling over this mail in linux-mm, do we have some more information about the problem we are running into? -- Cheers, David