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mm:kasan: fix sparse warnings: Should it be static?
Yes, when making the global variables kasan_ptr_result and kasan_int_result as static volatile, the warnings are removed and the variable and assignments are retained, but when just static is used I understand that it might be optimized. Add a fix making the global varaibles - static volatile, removing the warnings: mm/kasan/kasan_test.c:36:6: warning: symbol 'kasan_ptr_result' was not declared. Should it be static? mm/kasan/kasan_test.c:37:5: warning: symbol 'kasan_int_result' was not declared. Should it be static? Link: https://lkml.kernel.org/r/20241011114537.35664-1-niharchaithanya@gmail.com Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202312261010.o0lRiI9b-lkp@intel.com/ Signed-off-by: Nihar Chaithanya <niharchaithanya@gmail.com> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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1 changed files with 2 additions and 2 deletions
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@ -47,8 +47,8 @@ static struct {
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* Some tests use these global variables to store return values from function
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* Some tests use these global variables to store return values from function
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* calls that could otherwise be eliminated by the compiler as dead code.
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* calls that could otherwise be eliminated by the compiler as dead code.
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*/
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*/
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void *kasan_ptr_result;
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static volatile void *kasan_ptr_result;
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int kasan_int_result;
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static volatile int kasan_int_result;
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/* Probe for console output: obtains test_status lines of interest. */
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/* Probe for console output: obtains test_status lines of interest. */
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static void probe_console(void *ignore, const char *buf, size_t len)
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static void probe_console(void *ignore, const char *buf, size_t len)
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