Re: [PATCH] selftests/futex: Create test for robust list

[kernel test robot <lkp@intel.com>]

Hi André,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/locking/core]
[also build test ERROR on linus/master v6.11-rc5 next-20240830]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Andr-Almeida/selftests-futex-Create-test-for-robust-list/20240830-023631
base:   tip/locking/core
patch link:    https://lore.kernel.org/r/20240829183509.446934-1-andrealmeid%40igalia.com
patch subject: [PATCH] selftests/futex: Create test for robust list
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240831/202408311654.Me6a2xuF-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@intel.com>
| Closes: https://lore.kernel.org/r/202408311654.Me6a2xuF-lkp@intel.com/

All errors (new ones prefixed by >>):

>> robust_list.c:53:17: error: use of undeclared identifier 'SYS_futex_wait'; did you mean 'futex_wait'?
      53 |         return syscall(SYS_futex_wait, futex, val, ~0U, FUTEX2_SIZE_U32, timo, CLOCK_MONOTONIC);
         |                        ^~~~~~~~~~~~~~
         |                        futex_wait
   ../include/futextest.h:78:1: note: 'futex_wait' declared here
      78 | futex_wait(futex_t *uaddr, futex_t val, struct timespec *timeout, int opflags)
         | ^
>> robust_list.c:121:6: error: address argument to atomic operation must be a pointer to _Atomic type ('int *' invalid)
     121 |         if (atomic_compare_exchange_strong(futex, &zero, tid)) {
         |             ^                              ~~~~~
   /opt/cross/clang-617a15a9ea/lib/clang/18/include/stdatomic.h:144:67: note: expanded from macro 'atomic_compare_exchange_strong'
     144 | #define atomic_compare_exchange_strong(object, expected, desired) __c11_atomic_compare_exchange_strong(object, expected, desired, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
         |                                                                   ^                                    ~~~~~~
   robust_list.c:147:9: error: address argument to atomic operation must be a pointer to _Atomic type ('int *' invalid)
     147 |                 tid = atomic_load(futex);
         |                       ^           ~~~~~
   /opt/cross/clang-617a15a9ea/lib/clang/18/include/stdatomic.h:138:29: note: expanded from macro 'atomic_load'
     138 | #define atomic_load(object) __c11_atomic_load(object, __ATOMIC_SEQ_CST)
         |                             ^                 ~~~~~~
   robust_list.c:150:3: error: address argument to atomic operation must be a pointer to _Atomic type ('int *' invalid)
     150 |                 atomic_store(futex, tid);
         |                 ^            ~~~~~
   /opt/cross/clang-617a15a9ea/lib/clang/18/include/stdatomic.h:135:39: note: expanded from macro 'atomic_store'
     135 | #define atomic_store(object, desired) __c11_atomic_store(object, desired, __ATOMIC_SEQ_CST)
         |                                       ^                  ~~~~~~
   4 errors generated.


vim +53 tools/testing/selftests/futex/functional/robust_list.c

3306ef10715f1b André Almeida 2024-08-29  50  
3306ef10715f1b André Almeida 2024-08-29  51  int futex2_wait(void *futex, int val, struct timespec *timo)
3306ef10715f1b André Almeida 2024-08-29  52  {
3306ef10715f1b André Almeida 2024-08-29 @53  	return syscall(SYS_futex_wait, futex, val, ~0U, FUTEX2_SIZE_U32, timo, CLOCK_MONOTONIC);
3306ef10715f1b André Almeida 2024-08-29  54  }
3306ef10715f1b André Almeida 2024-08-29  55  

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