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[2003:cb:c73e:aa00:c9db:441d:a65e:6999]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-390cd8fc8adsm2889357f8f.98.2025.02.25.08.40.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 25 Feb 2025 08:40:17 -0800 (PST) Message-ID: <80482fc2-393c-431f-b982-acb11de1e037@redhat.com> Date: Tue, 25 Feb 2025 17:40:16 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/4] mm: page_table_check: use new iteration API To: Luiz Capitulino , linux-kernel@vger.kernel.org, linux-mm@kvack.org, yuzhao@google.com, pasha.tatashin@soleen.com Cc: akpm@linux-foundation.org, hannes@cmpxchg.org, muchun.song@linux.dev References: <30d246e83e73073451dc3d5fe189b733afbefd07.1740434344.git.luizcap@redhat.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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 B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <30d246e83e73073451dc3d5fe189b733afbefd07.1740434344.git.luizcap@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: fyqdTeL3XuDJeV9ODbNK4VasDUmigXMz192YxjjMLFo_1740501618 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: 1xznxb4bw785tmdnnoidu7wnzna6oo5k X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 391E3140002 X-HE-Tag: 1740501624-473382 X-HE-Meta: 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 ikxX9HoI 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 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 24.02.25 22:59, Luiz Capitulino wrote: > The page_ext_next() function assumes that page extension objects for a > page order allocation always reside in the same memory section, which > may not be true and could lead to crashes. Use the new page_ext > iteration API instead. > > Fixes: cf54f310d0d3 ("mm/hugetlb: use __GFP_COMP for gigantic folios") > Signed-off-by: Luiz Capitulino > --- Acked-by: David Hildenbrand -- Cheers, David / dhildenb