[android-common:android16-6.12-2026-06 0/1] mm/kasan/kasan_test_c.c:48:6: sparse: sparse: symbol 'kasan_ptr_result' was not declared. Should it be static?

[android-common:android16-6.12-2026-06 0/1] mm/kasan/kasan_test_c.c:48:6: sparse: sparse: symbol 'kasan_ptr_result' was not declared. Should it be static?

[kernel test robot]

Hi Matthew,

First bad commit (maybe != root cause):

tree:   https://android.googlesource.com/kernel/common android16-6.12-2026-06
head:   8a69376da734aa00bb02cd1155489c74454e4487
commit: a2f11547052001bd448ccec81dd1e68409078fbb [0/1] kasan: rust: Add KASAN smoke test via UAF
config: x86_64-randconfig-123-20260704 (https://download.01.org/0day-ci/archive/20260704/202607041827.4Z0qYEh2-lkp@intel.com/config)
compiler: gcc-13 (Debian 13.3.0-16) 13.3.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260704/202607041827.4Z0qYEh2-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
| Fixes: a2f115470520 ("kasan: rust: Add KASAN smoke test via UAF")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607041827.4Z0qYEh2-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> mm/kasan/kasan_test_c.c:48:6: sparse: sparse: symbol 'kasan_ptr_result' was not declared. Should it be static?
>> mm/kasan/kasan_test_c.c:49:5: sparse: sparse: symbol 'kasan_int_result' was not declared. Should it be static?

vim +/kasan_ptr_result +48 mm/kasan/kasan_test_c.c

7ce0ea19d50e4e mm/kasan/kasan_test.c Andrey Konovalov 2022-09-27  43  
adb72ae1915db2 lib/test_kasan.c      Daniel Axtens    2020-06-03  44  /*
0fd379253691e7 lib/test_kasan.c      Andrey Konovalov 2021-02-24  45   * Some tests use these global variables to store return values from function
0fd379253691e7 lib/test_kasan.c      Andrey Konovalov 2021-02-24  46   * calls that could otherwise be eliminated by the compiler as dead code.
adb72ae1915db2 lib/test_kasan.c      Daniel Axtens    2020-06-03  47   */
adb72ae1915db2 lib/test_kasan.c      Daniel Axtens    2020-06-03 @48  void *kasan_ptr_result;
83c4e7a0363bdb lib/test_kasan.c      Patricia Alfonso 2020-10-13 @49  int kasan_int_result;
83c4e7a0363bdb lib/test_kasan.c      Patricia Alfonso 2020-10-13  50  

:::::: The code at line 48 was first introduced by commit
:::::: adb72ae1915db28f934e9e02c18bfcea2f3ed3b7 kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE

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

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