linux-kernel - mm/kasan/kasan_test.c:36:6: sparse: sparse: symbol 'kasan_ptr_result' was not declared. Should it be static?

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Date: Tue, 26 Dec 2023 10:16:34 +0800
From: kernel test robot <lkp@...el.com>
To: Andrey Konovalov <andreyknvl@...gle.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	Marco Elver <elver@...gle.com>
Subject: mm/kasan/kasan_test.c:36:6: sparse: sparse: symbol
 'kasan_ptr_result' was not declared. Should it be static?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   fbafc3e621c3f4ded43720fdb1d6ce1728ec664e
commit: f7e01ab828fd4bf6d25b1f143a3994241e8572bf kasan: move tests to mm/kasan/
date:   1 year, 3 months ago
config: x86_64-randconfig-122-20231101 (https://download.01.org/0day-ci/archive/20231226/202312261010.o0lRiI9b-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231226/202312261010.o0lRiI9b-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/202312261010.o0lRiI9b-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> mm/kasan/kasan_test.c:36:6: sparse: sparse: symbol 'kasan_ptr_result' was not declared. Should it be static?
>> mm/kasan/kasan_test.c:37:5: sparse: sparse: symbol 'kasan_int_result' was not declared. Should it be static?

vim +/kasan_ptr_result +36 mm/kasan/kasan_test.c

f33a01492a24a2 lib/test_kasan.c Walter Wu        2020-08-06  31  
adb72ae1915db2 lib/test_kasan.c Daniel Axtens    2020-06-03  32  /*
0fd379253691e7 lib/test_kasan.c Andrey Konovalov 2021-02-24  33   * Some tests use these global variables to store return values from function
0fd379253691e7 lib/test_kasan.c Andrey Konovalov 2021-02-24  34   * calls that could otherwise be eliminated by the compiler as dead code.
adb72ae1915db2 lib/test_kasan.c Daniel Axtens    2020-06-03  35   */
adb72ae1915db2 lib/test_kasan.c Daniel Axtens    2020-06-03 @36  void *kasan_ptr_result;
83c4e7a0363bdb lib/test_kasan.c Patricia Alfonso 2020-10-13 @37  int kasan_int_result;
83c4e7a0363bdb lib/test_kasan.c Patricia Alfonso 2020-10-13  38  

:::::: The code at line 36 was first introduced by commit
:::::: adb72ae1915db28f934e9e02c18bfcea2f3ed3b7 kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE

:::::: TO: Daniel Axtens <dja@...ens.net>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

-- 
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https://github.com/intel/lkp-tests/wiki