linux-kernel - Re: [PATCH v0 2/2] mm: swap: Forced swap entries release under memory pressure

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Message-ID: <202509101302.pptHT8X8-lkp@intel.com>
Date: Wed, 10 Sep 2025 13:36:34 +0800
From: kernel test robot <lkp@...el.com>
To: Lei Liu <liulei.rjpt@...o.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kemeng Shi <shikemeng@...weicloud.com>,
	Kairui Song <kasong@...cent.com>, Nhat Pham <nphamcs@...il.com>,
	Baoquan He <bhe@...hat.com>, Barry Song <baohua@...nel.org>,
	Chris Li <chrisl@...nel.org>, Vlastimil Babka <vbabka@...e.cz>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Michal Hocko <mhocko@...e.com>,
	Brendan Jackman <jackmanb@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>, Zi Yan <ziy@...dia.com>,
	open list <linux-kernel@...r.kernel.org>
Cc: oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	Lei Liu <liulei.rjpt@...o.com>
Subject: Re: [PATCH v0 2/2] mm: swap: Forced swap entries release under
 memory pressure

Hi Lei,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Lei-Liu/mm-swap-Gather-swap-entries-and-batch-async-release-core/20250909-145620
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250909065349.574894-3-liulei.rjpt%40vivo.com
patch subject: [PATCH v0 2/2] mm: swap: Forced swap entries release under memory pressure
config: sparc-randconfig-002-20250910 (https://download.01.org/0day-ci/archive/20250910/202509101302.pptHT8X8-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250910/202509101302.pptHT8X8-lkp@intel.com/reproduce)

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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509101302.pptHT8X8-lkp@intel.com/

All errors (new ones prefixed by >>):

   sparc64-linux-ld: kernel/exit.o: in function `do_exit':
   exit.c:(.text+0x19f0): undefined reference to `exiting_task_count'
   sparc64-linux-ld: exit.c:(.text+0x1a14): undefined reference to `exiting_task_count'
   sparc64-linux-ld: exit.c:(.text+0x2124): undefined reference to `exiting_task_count'
   sparc64-linux-ld: mm/memory.o: in function `unmap_page_range':
   memory.c:(.text+0x46a4): undefined reference to `add_to_swap_gather_cache'
   sparc64-linux-ld: mm/page_alloc.o: in function `__alloc_pages_slowpath.constprop.124':
>> page_alloc.c:(.text+0xb44c): undefined reference to `flush_cache_if_needed'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki