linux-kernel - Re: [PATCH V2] mm/migrate: Fix NULL movable_ops if CONFIG

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Message-ID: <202508170118.0VFEAq7Q-lkp@intel.com>
Date: Sun, 17 Aug 2025 01:42:33 +0800
From: kernel test robot <lkp@...el.com>
To: Huacai Chen <chenhuacai@...ngson.cn>,
	Huacai Chen <chenhuacai@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	David Hildenbrand <david@...hat.com>, Zi Yan <ziy@...dia.com>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Harry Yoo <harry.yoo@...cle.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] mm/migrate: Fix NULL movable_ops if CONFIG_ZSMALLOC=m

Hi Huacai,

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/Huacai-Chen/mm-migrate-Fix-NULL-movable_ops-if-CONFIG_ZSMALLOC-m/20250816-152326
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250816072149.1952348-1-chenhuacai%40loongson.cn
patch subject: [PATCH V2] mm/migrate: Fix NULL movable_ops if CONFIG_ZSMALLOC=m
config: arm-randconfig-003-20250817 (https://download.01.org/0day-ci/archive/20250817/202508170118.0VFEAq7Q-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 93d24b6b7b148c47a2fa228a4ef31524fa1d9f3f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250817/202508170118.0VFEAq7Q-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/202508170118.0VFEAq7Q-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/migrate.c:58:42: error: too few arguments provided to function-like macro invocation
      58 | EXPORT_SYMBOL_GPL_FOR_MODULES(movable_ops);
         |                                          ^
   include/linux/export.h:94:9: note: macro 'EXPORT_SYMBOL_GPL_FOR_MODULES' defined here
      94 | #define EXPORT_SYMBOL_GPL_FOR_MODULES(sym, mods) __EXPORT_SYMBOL(sym, "GPL", "module:" mods)
         |         ^
>> mm/migrate.c:58:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
      58 | EXPORT_SYMBOL_GPL_FOR_MODULES(movable_ops);
         | ^
         | int
   2 errors generated.


vim +58 mm/migrate.c

    57	
  > 58	EXPORT_SYMBOL_GPL_FOR_MODULES(movable_ops);
    59	

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