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X-CSE-ConnectionGUID: Q0Rp2ejMQoWc2+Ldn2FG/A== X-CSE-MsgGUID: 07GKQidcQnCf0Yd/nUPlJQ== X-IronPort-AV: E=McAfee;i="6800,10657,11914"; a="91087216" X-IronPort-AV: E=Sophos;i="6.27,119,1787036400"; d="scan'208";a="91087216" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2026 20:55:53 -0700 X-CSE-ConnectionGUID: 6IppWfUsRoKkrEUti05hiA== X-CSE-MsgGUID: FU/g7o9gQVqhsp1vb3mJVg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,119,1787036400"; d="scan'208";a="273381451" Received: from ly-workstation.sh.intel.com (HELO ly-workstation) ([10.239.182.64]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2026 20:55:50 -0700 Date: Thu, 24 Sep 2026 11:55:47 +0800 From: kernel test robot To: "Harry Yoo (Meta)" Cc: oe-lkp@lists.linux.dev, lkp@intel.com, Hyunwoo Kim , linux-mm@kvack.org, Vlastimil Babka , Andrew Morton , Hao Li , Christoph Lameter , David Rientjes , Roman Gushchin , linux-kernel@vger.kernel.org, yi1.lai@intel.com Subject: Re: [PATCH v3] mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race Message-ID: <202609240534.9fe4984a-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260903-slab-fix-aba-v3-1-b44cb6badd54@kernel.org> X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: B7DEE160005 X-Stat-Signature: 5fpdj5i6uirwbnxpgazaqbdggs3bmypr X-HE-Tag: 1790222154-134402 X-HE-Meta: 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 CCfE7P3L 7R4g7M2meF9G8Wp1gL6hnBmwCTvztT5Wrg2xFYq9vRCfozEsfG+0Uy/e0PpNKWCHN6blSAEh06t6Ucmxbj0RfWf7I+Y9jCr76gpmYu5Pexq/f18sSlKRZc3wnxiaFO/s8ZqquY6qxWgmy6OnmylV5UH+Vvvt5t+J6nhgODGREdCc8NksuhoFgPWHViRiyxNCCsMRAxc5Qcm4Cd+L/kHkchQ/joZyh7/I5pZX4lp9hU5cpTVnhYFwel9QolW+aKpXtbkXYmrYFhFU95OTQEOuHbIRlI1Bv7kuYesdo9oL1oh27l3J6d1IYnvhiomM/SBnPrLgkD5AVUq20s3PMjdiC0i8sDChNnE1bNhJatQXzGIAY4h6YeaH47K1ncQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, kernel test robot noticed a 2.3% regression of stress-ng.pagemove.page_remaps_per_sec on: commit: 710555228bde64392410a9e8959d0324c1a0a598 ("[PATCH v3] mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race") url: https://github.com/intel-lab-lkp/linux/commits/Harry-Yoo-Meta/mm-slab-take-n-list_lock-in-__slab_try_return_freelist-to-avoid-race/20260903-153226 patch link: https://lore.kernel.org/all/20260903-slab-fix-aba-v3-1-b44cb6badd54@kernel.org/ patch subject: [PATCH v3] mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race testcase: stress-ng config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E CPU @ 2.4GHz (Sierra Forest) with 256G memory parameters: nr_threads: 100% testtime: 60s test: pagemove cpufreq_governor: performance 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/202609240534.9fe4984a-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260924/202609240534.9fe4984a-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: gcc-14/performance/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/igk-srf-2sp3/pagemove/stress-ng/60s commit: v7.3-rc1 710555228b ("[PATCH v3] mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race") v7.3-rc1 710555228bde64392410a9e8959 ---------------- --------------------------- %stddev %change %stddev \ | \ 74699042 -2.5% 72797565 stress-ng.pagemove.ops 1245981 -2.5% 1214288 stress-ng.pagemove.ops_per_sec 291125 -2.3% 284309 stress-ng.pagemove.page_remaps_per_sec Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki