[android-common:android17-6.18 1/1] mm/memory.c:96:2: sparse: sparse: Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "low confidence static check first_new_problem: mm/memory.c:96:2: sparse: sparse: Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid."
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: cros-kernel-buildreports@googlegroups.com

tree:   https://android.googlesource.com/kernel/common android17-6.18
head:   b835509d43ba8175031f800f12347f8e8206a471
commit: 9d29ba85d8a2c505b2d049568c3b1d29c4e0c2fd [1/1] ANDROID: mm: mglru: let MADV_WILLNEED pages take extra trip in active list
:::::: branch date: 12 hours ago
:::::: commit date: 4 weeks ago
config: x86_64-randconfig-r2300-20261106 (https://download.01.org/0day-ci/archive/20261106/202611060800.G6eVPKsw-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1-21-g84ec0658
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261106/202611060800.G6eVPKsw-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@intel.com>
| Closes: https://lore.kernel.org/r/202611060800.G6eVPKsw-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> mm/memory.c:96:2: sparse: sparse: Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.
   mm/memory.c:167:15: sparse: sparse: symbol 'zero_pfn' was not declared. Should it be static?
   mm/memory.c:300:9: sparse: sparse: incompatible types in conditional expression (different base types):
   mm/memory.c:300:9: sparse:    void
   mm/memory.c:300:9: sparse:    int

vim +96 mm/memory.c

42b7772812d15b8 Jan Beulich    2008-07-23  94  
af27d9403f5b806 Arnd Bergmann  2018-02-16  95  #if defined(LAST_CPUPID_NOT_IN_PAGE_FLAGS) && !defined(CONFIG_COMPILE_TEST)
90572890d202527 Peter Zijlstra 2013-10-07 @96  #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.
75980e97daccfc6 Peter Zijlstra 2013-02-22  97  #endif
75980e97daccfc6 Peter Zijlstra 2013-02-22  98  

:::::: The code at line 96 was first introduced by commit
:::::: 90572890d202527c366aa9489b32404e88a7c020 mm: numa: Change page last {nid,pid} into {cpu,pid}

:::::: TO: Peter Zijlstra <peterz@infradead.org>
:::::: CC: Ingo Molnar <mingo@kernel.org>

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