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Wed, 13 Sep 2023 09:09:23 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 90l2M0N8AWUJOgAAMHmgww (envelope-from ); Wed, 13 Sep 2023 09:09:23 +0000 Date: Wed, 13 Sep 2023 11:10:10 +0200 From: Cyril Hrubis To: kernel test robot Cc: Edward AD , syzbot+b591856e0f0139f83023@syzkaller.appspotmail.com, lkp@intel.com, syzkaller-bugs@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, oe-lkp@lists.linux.dev, akpm@linux-foundation.org, ltp@lists.linux.it Subject: Re: [LTP] [PATCH] mm: as the same logic with queue_pages_range Message-ID: References: <20230906061902.591996-1-eadavis@sina.com> <202309121302.8864096c-oliver.sang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202309121302.8864096c-oliver.sang@intel.com> X-Rspamd-Queue-Id: 3481140003 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: jw7pemjpzxmgk1gwy14smpag9r3yi4uz X-HE-Tag: 1694596165-705670 X-HE-Meta: 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 zRuTWThJ /AHalndi0Y9kB1IY/wzNFDpfkoG7e7hk2RBgFO1MnUZuwwb68Uolo2vq7cvMsETne6qmR0IuK/h4z2LlhCTPj+y3lfgqB5xaNFp7Gn/0KbQOZdl6bc0cPqEEOkZ9WnlX3cQQSxmvRnZqS8Vjh/0ho/R2Vlpu61xGL5Ktv0roaG82y/N7anCyrKnQPY9kNMpwbzUS6xFN+q/HKiPqcZNWEfudZt99PLPqLeqq01E24Xd9knDC8biy4vQ4s0mf4NqUPuGHlgEII6J3sgKl4JXWQCchoqyLGZJjUBzsm0L2eWqV9cF57MeEFUx+BY0r0vQcz/zYABzah294IGkMNkim2W4Bv0Un9TSqp72UjxXe1hiR5OYQ= 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: Hi! > Running tests....... > <<>> > tag=vma02 stime=1694438526 > cmdline="vma02" > contacts="" > analysis=exit > <<>> > vma02 0 TINFO : pid = 3639 addr = 0x7f5202dd6000 > vma02 0 TINFO : start = 0x7f5202dd6000, end = 0x7f5202dd7000 > vma02 0 TINFO : start = 0x7f5202dd7000, end = 0x7f5202dd8000 > vma02 0 TINFO : start = 0x7f5202dd8000, end = 0x7f5202dd9000 > vma02 1 TFAIL : vma02.c:144: >1 unmerged VMAs. > incrementing stop So the test is reproducer for: commit 9d8cebd4bcd7c3878462fdfda34bbcdeb4df7ef4 Author: KOSAKI Motohiro Date: Fri Mar 5 13:41:57 2010 -0800 mm: fix mbind vma merge problem Strangely, current mbind() doesn't merge vma with neighbor vma although it's possible. Unfortunately, many vma can reduce performance... And what the test does is: - map 3 continous pages - popluate - mbind() first page - mbind() all three pages - checks that there is only single VMA for the pages after second mbind() -- Cyril Hrubis chrubis@suse.cz