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[2003:cb:c74b:2400:64b1:deb6:7ff8:8d67]) by smtp.gmail.com with ESMTPSA id az3-20020a05600c600300b0040d4954ac04sm575651wmb.43.2023.12.22.01.38.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 Dec 2023 01:38:34 -0800 (PST) Message-ID: <08c09914-b698-4c4a-b661-5dc855034a89@redhat.com> Date: Fri, 22 Dec 2023 10:38:34 +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 Cc: Andrew Morton , 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> <20231221135833.92b8b2a97b28ad0545977f6c@linux-foundation.org> <6a8f2110-fa91-4c10-9eae-88315309a6e3@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: 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: rspam09 X-Rspamd-Queue-Id: 71EBD4000D X-Stat-Signature: szpt1943afmdgnwfjjkzdgc8b8eb653y X-Rspam-User: X-HE-Tag: 1703237919-903401 X-HE-Meta: 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 cSVna5q3 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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 22.12.23 09:13, Oliver Sang wrote: > hi, David, > > On Thu, Dec 21, 2023 at 11:07:21PM +0100, David Hildenbrand wrote: >> On 21.12.23 22:58, Andrew Morton wrote: >>> On Thu, 21 Dec 2023 12:32:04 +0100 David Hildenbrand wrote: >>> >>>> 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. >>> >>> I think a full patch would be better, please. >>> > > we cannot reproduce the issue reported previously after applying below patch. Thanks for verifying and happy holidays! -- Cheers, David / dhildenb