arch/x86/include/asm/timex.h:10:7: error: call to undeclared function 'DISABLED_MASK_BIT_SET'; ISO C99 and later do not support implicit function declarations

kernel test robot <[email protected]>
Newsgroups dev.linux.lists.oe-kbuild-all,org.kernel.vger.linux-kernel
Message-ID <[email protected]> 
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   cb8a75eec0877810b50aa1c5a833f929525cd2ee
commit: 3ed403bbc967a3138b8e37566510e9b062751372 treewide: Remove CLOCK_TICK_RATE
date:   5 weeks ago
config: um-randconfig-r053-20260820 (https://download.01.org/0day-ci/archive/20260821/[email protected]/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 935bfc708590c60147a79c7df145bb6e68b1d388)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260821/[email protected]/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: 3ed403bbc967 ("treewide: Remove CLOCK_TICK_RATE")
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

   In file included from arch/um/kernel/asm-offsets.c:6:
   In file included from include/linux/crypto.h:18:
   In file included from include/linux/slab.h:17:
   In file included from include/linux/gfp.h:7:
   In file included from include/linux/mmzone.h:22:
   In file included from include/linux/mm_types.h:16:
   In file included from include/linux/uprobes.h:18:
   In file included from include/linux/timer.h:6:
   In file included from include/linux/ktime.h:25:
   In file included from include/linux/jiffies.h:10:
   In file included from include/linux/time.h:60:
   In file included from include/linux/time32.h:13:
   In file included from include/linux/timex.h:67:
   In file included from arch/x86/include/asm/timex.h:6:
   arch/x86/include/asm/tsc.h:79:7: error: call to undeclared function 'DISABLED_MASK_BIT_SET'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      79 |         if (!cpu_feature_enabled(X86_FEATURE_TSC))
         |              ^
   arch/um/include/asm/cpufeature.h:52:32: note: expanded from macro 'cpu_feature_enabled'
      52 |         (__builtin_constant_p(bit) && DISABLED_MASK_BIT_SET(bit) ? 0 : static_cpu_has(bit))
         |                                       ^
   In file included from arch/um/kernel/asm-offsets.c:6:
   In file included from include/linux/crypto.h:18:
   In file included from include/linux/slab.h:17:
   In file included from include/linux/gfp.h:7:
   In file included from include/linux/mmzone.h:22:
   In file included from include/linux/mm_types.h:16:
   In file included from include/linux/uprobes.h:18:
   In file included from include/linux/timer.h:6:
   In file included from include/linux/ktime.h:25:
   In file included from include/linux/jiffies.h:10:
   In file included from include/linux/time.h:60:
   In file included from include/linux/time32.h:13:
   In file included from include/linux/timex.h:67:
>> arch/x86/include/asm/timex.h:10:7: error: call to undeclared function 'DISABLED_MASK_BIT_SET'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      10 |         if (!cpu_feature_enabled(X86_FEATURE_TSC))
         |              ^
   arch/um/include/asm/cpufeature.h:52:32: note: expanded from macro 'cpu_feature_enabled'
      52 |         (__builtin_constant_p(bit) && DISABLED_MASK_BIT_SET(bit) ? 0 : static_cpu_has(bit))
         |                                       ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
      98 |                 return (set->sig[3] | set->sig[2] |
         |                         ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
      98 |                 return (set->sig[3] | set->sig[2] |
         |                                       ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
      99 |                         set->sig[1] | set->sig[0]) == 0;
         |                         ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:101:11: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
     101 |                 return (set->sig[1] | set->sig[0]) == 0;
         |                         ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
     114 |                 return  (set1->sig[3] == set2->sig[3]) &&
         |                          ^         ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:114:27: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
     114 |                 return  (set1->sig[3] == set2->sig[3]) &&
         |                                          ^         ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:115:5: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
     115 |                         (set1->sig[2] == set2->sig[2]) &&
         |                          ^         ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:115:21: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
     115 |                         (set1->sig[2] == set2->sig[2]) &&
         |                                          ^         ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:116:5: warning: array index 1 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
     116 |                         (set1->sig[1] == set2->sig[1]) &&
         |                          ^         ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
      24 |         unsigned long sig[_NSIG_WORDS];
         |         ^
   In file included from arch/um/kernel/asm-offsets.c:8:
   In file included from include/linux/audit.h:13:
   In file included from include/linux/ptrace.h:7:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:116:21: warning: array index 1 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]


vim +/DISABLED_MASK_BIT_SET +10 arch/x86/include/asm/timex.h

2f0798a3b1c215 include/asm-x86/timex.h      Thomas Gleixner    2007-10-12   7  
3bd4abc07a267e arch/x86/include/asm/timex.h Jason A. Donenfeld 2022-04-08   8  static inline unsigned long random_get_entropy(void)
3bd4abc07a267e arch/x86/include/asm/timex.h Jason A. Donenfeld 2022-04-08   9  {
5c75b98aa9cd5b arch/x86/include/asm/timex.h Ingo Molnar        2026-04-27 @10  	if (!cpu_feature_enabled(X86_FEATURE_TSC))
3bd4abc07a267e arch/x86/include/asm/timex.h Jason A. Donenfeld 2022-04-08  11  		return random_get_entropy_fallback();
3bd4abc07a267e arch/x86/include/asm/timex.h Jason A. Donenfeld 2022-04-08  12  	return rdtsc();
3bd4abc07a267e arch/x86/include/asm/timex.h Jason A. Donenfeld 2022-04-08  13  }
3bd4abc07a267e arch/x86/include/asm/timex.h Jason A. Donenfeld 2022-04-08  14  #define random_get_entropy random_get_entropy
3bd4abc07a267e arch/x86/include/asm/timex.h Jason A. Donenfeld 2022-04-08  15  

:::::: The code at line 10 was first introduced by commit
:::::: 5c75b98aa9cd5b1725b76999d794dc72ebd7a54a x86/cpu: Remove unused !CONFIG_X86_TSC code

:::::: TO: Ingo Molnar <[email protected]>
:::::: CC: Ingo Molnar <[email protected]>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.