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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id p7-20020adfe607000000b00336843ae919sm1661473wrm.49.2023.12.21.03.32.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 Dec 2023 03:32:05 -0800 (PST) Message-ID: Date: Thu, 21 Dec 2023 12:32:04 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linux-next:master] [mm] bbcbf2a3f0: kernel_BUG_at_mm/memory.c To: Oliver Sang , Andrew Morton Cc: Matthew Wilcox , oe-lkp@lists.linux.dev, lkp@intel.com, Linux Memory Management List , linux-kernel@vger.kernel.org References: <202312192319.fa8f5709-oliver.sang@intel.com> <20231220141135.cb4241442b657104f0aeae34@linux-foundation.org> 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: 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-Queue-Id: 6A73C100014 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: sf78ch4abs1tuczhqetdic4nu4bc54jn X-HE-Tag: 1703158329-503719 X-HE-Meta: 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 muG6dTCJ 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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 21.12.23 12:23, Oliver Sang wrote: > hi, Andrew Morton, > > On Wed, Dec 20, 2023 at 02:11:35PM -0800, Andrew Morton wrote: >> On Tue, 19 Dec 2023 23:46:50 +0800 kernel test robot wrote: >> >>> >>> >>> Hello, >>> >>> kernel test robot noticed "kernel_BUG_at_mm/memory.c" on: >>> >>> commit: bbcbf2a3f05f74f9d268eab57abbdce6a65a94ad ("mm: convert ksm_might_need_to_copy() to work on folios") >> >> I assume this is a bisection result, so it's quite repeatable? > > yes, we bisect to this commit, it's quite repeatable: > > ddd06bb63d9793ce bbcbf2a3f05f74f9d268eab57ab > ---------------- --------------------------- > fail:runs %reproduction fail:runs > | | | > :6 100% 6:6 dmesg.Kernel_panic-not_syncing:Fatal_exception > :6 100% 6:6 dmesg.RIP:do_swap_page > :6 100% 6:6 dmesg.invalid_opcode:#[##] > :6 100% 6:6 dmesg.kernel_BUG_at_mm/memory.c > > Can you try with the snipped I sent? Please let me know if you need a full patch for testing purposes. -- Cheers, David / dhildenb