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([2a09:80c0:192:0:5dac:bf3d:c41:c3e7]) by smtp.gmail.com with ESMTPSA id z17-20020a1c4c11000000b0040a44179a88sm3518712wmf.42.2023.11.16.05.24.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Nov 2023 05:24:23 -0800 (PST) Message-ID: <3540fd3e-88dd-462b-88ce-df28b7b5b148@redhat.com> Date: Thu, 16 Nov 2023 14:24:22 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linus:master] [mm/ksm] 5e924ff54d: ltp.ksm01.fail To: kernel test robot , Stefan Roesch Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Andrew Morton , Johannes Weiner , Rik van Riel , linux-mm@kvack.org, ltp@lists.linux.it References: <202311161132.13d8ce5a-oliver.sang@intel.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: <202311161132.13d8ce5a-oliver.sang@intel.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-Stat-Signature: 5a7i5phswq5c3oxyo31qkxk1smetbho9 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 28DEE80022 X-Rspam-User: X-HE-Tag: 1700141067-503577 X-HE-Meta: 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 wyM+vUDC 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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 16.11.23 05:39, kernel test robot wrote: > > hi, Stefan Roesch, > > we reported > "[linux-next:master] [mm/ksm] 5e924ff54d: ltp.ksm01_1.fail" > in > https://lore.kernel.org/all/202311031548.66780ff5-oliver.sang@intel.com/ > when this commit is in linux-next/master. > > now we noticed this commit is merged in mainline, and we still observed > same issue. just FYI. > > > Hello, > > kernel test robot noticed "ltp.ksm01.fail" on: > > commit: 5e924ff54d088828794d9f1a4d5bf17808f7270e ("mm/ksm: add "smart" page scanning mode") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > [test failed on linus/master 3ca112b71f35dd5d99fc4571a56b5fc6f0c15814] > [test failed on linux-next/master 8728c14129df7a6e29188a2e737b4774fb200953] > > in testcase: ltp > version: ltp-x86_64-14c1f76-1_20230715 > with following parameters: > > disk: 1HDD > test: mm-00/ksm01 > > > > compiler: gcc-12 > test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (Kaby Lake) with 32G memory > > (please refer to attached dmesg/kmsg for entire log/backtrace) > > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot > | Closes: https://lore.kernel.org/oe-lkp/202311161132.13d8ce5a-oliver.sang@intel.com > > > > Running tests....... > <<>> > tag=ksm01 stime=1699563923 > cmdline="ksm01" > contacts="" > analysis=exit > <<>> > tst_kconfig.c:87: TINFO: Parsing kernel config '/proc/config.gz' > tst_test.c:1558: TINFO: Timeout per run is 0h 00m 30s > mem.c:422: TINFO: wait for all children to stop. > mem.c:388: TINFO: child 0 stops. > mem.c:388: TINFO: child 1 stops. > mem.c:388: TINFO: child 2 stops. > mem.c:495: TINFO: KSM merging... > mem.c:434: TINFO: resume all children. > mem.c:422: TINFO: wait for all children to stop. > mem.c:344: TINFO: child 1 continues... > mem.c:347: TINFO: child 1 allocates 128 MB filled with 'a' > mem.c:344: TINFO: child 2 continues... > mem.c:347: TINFO: child 2 allocates 128 MB filled with 'a' > mem.c:344: TINFO: child 0 continues... > mem.c:347: TINFO: child 0 allocates 128 MB filled with 'c' > mem.c:400: TINFO: child 1 stops. > mem.c:400: TINFO: child 0 stops. > mem.c:400: TINFO: child 2 stops. > ksm_helper.c:36: TINFO: ksm daemon takes 2s to run two full scans > mem.c:264: TINFO: check! > mem.c:255: TPASS: run is 1. > mem.c:255: TPASS: pages_shared is 2. > > .... > > mem.c:255: TPASS: pages_shared is 1. > mem.c:255: TPASS: pages_sharing is 98302. > mem.c:252: TFAIL: pages_volatile is not 0 but 1. <----- > mem.c:252: TFAIL: pages_unshared is not 1 but 0. <----- @Stefan, is this simply related to the new scanning optimization (skip and eventually not merge a pages within the "2 scans" windows, whereby previously, they would have gotten merged)? If so, we might just want to disable that optimization for that test case? Alternatively, maybe we have to wait for "more" scan cycles instead of only 2? -- Cheers, David / dhildenb