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[2003:d8:2f09:3f00:d228:bd67:7baa:d604]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36e4c937bb9sm10678075f8f.34.2024.08.13.08.09.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Aug 2024 08:09:10 -0700 (PDT) Message-ID: Date: Tue, 13 Aug 2024 17:09:09 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 2/2] alloc_tag: mark pages reserved during CMA activation as not tagged To: Suren Baghdasaryan , akpm@linux-foundation.org Cc: kent.overstreet@linux.dev, vbabka@suse.cz, pasha.tatashin@soleen.com, souravpanda@google.com, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@vger.kernel.org References: <20240813150758.855881-1-surenb@google.com> <20240813150758.855881-2-surenb@google.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: <20240813150758.855881-2-surenb@google.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 0DD7B14001F X-Stat-Signature: hm7bpqqra1gjzcpf34rerqcgbwds6g14 X-Rspam-User: X-HE-Tag: 1723561754-629353 X-HE-Meta: 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 iGXblZHk 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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 13.08.24 17:07, Suren Baghdasaryan wrote: > During CMA activation, pages in CMA area are prepared and then freed > without being allocated. This triggers warnings when memory allocation > debug config (CONFIG_MEM_ALLOC_PROFILING_DEBUG) is enabled. Fix this > by marking these pages not tagged before freeing them. > > Fixes: d224eb0287fb ("codetag: debug: mark codetags for reserved pages as empty") > Signed-off-by: Suren Baghdasaryan > Cc: stable@vger.kernel.org # v6.10 > --- > Changes since v2 [1]: > - Add and use clear_page_tag_ref helper, per David Hildenbrand > > https://lore.kernel.org/all/20240812192428.151825-1-surenb@google.com/ > > mm/mm_init.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/mm/mm_init.c b/mm/mm_init.c > index 907c46b0773f..13c4060bb01a 100644 > --- a/mm/mm_init.c > +++ b/mm/mm_init.c > @@ -2245,6 +2245,8 @@ void __init init_cma_reserved_pageblock(struct page *page) > > set_pageblock_migratetype(page, MIGRATE_CMA); > set_page_refcounted(page); > + /* pages were reserved and not allocated */ > + clear_page_tag_ref(page); > __free_pages(page, pageblock_order); > > adjust_managed_page_count(page, pageblock_nr_pages); Acked-by: David Hildenbrand -- Cheers, David / dhildenb