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Date:   Mon, 21 Feb 2022 04:51:19 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andi Kleen <ak@...ux.intel.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [ak-misc:lto-5.17-1-wip 13/52] kernel/time/posix-stubs.c:34:43:
 warning: 'sys_timer_create' alias between functions of incompatible types
 'long int(clockid_t,  struct sigevent *, timer_t *)' {aka 'long int(int,
  struct sigevent *, int *)'} and 'long int(void)'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc.git lto-5.17-1-wip
head:   e3a498b1f0eadc0a91ae725fd924588fd660a9af
commit: a80de7a70547b61179e288ef2531c410a47f734e [13/52] lto: Use C version for SYSCALL_ALIAS / cond_syscall
config: arm-randconfig-r002-20220220 (https://download.01.org/0day-ci/archive/20220221/202202210456.qXsmncqh-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc.git/commit/?id=a80de7a70547b61179e288ef2531c410a47f734e
        git remote add ak-misc https://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc.git
        git fetch --no-tags ak-misc lto-5.17-1-wip
        git checkout a80de7a70547b61179e288ef2531c410a47f734e
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash kernel/time/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   kernel/time/posix-stubs.c:25:17: warning: no previous prototype for 'sys_ni_posix_timers' [-Wmissing-prototypes]
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:73:5: warning: no previous prototype for 'do_clock_gettime' [-Wmissing-prototypes]
      73 | int do_clock_gettime(clockid_t which_clock, struct timespec64 *tp)
         |     ^~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_timer_create' alias between functions of incompatible types 'long int(clockid_t,  struct sigevent *, timer_t *)' {aka 'long int(int,  struct sigevent *, int *)'} and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:41:1: note: in expansion of macro 'SYS_NI'
      41 | SYS_NI(timer_create);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_clock_adjtime32' alias between functions of incompatible types 'long int(clockid_t,  struct old_timex32 *)' {aka 'long int(int,  struct old_timex32 *)'} and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:49:1: note: in expansion of macro 'SYS_NI'
      49 | SYS_NI(clock_adjtime32);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_setitimer' alias between functions of incompatible types 'long int(int,  struct __kernel_old_itimerval *, struct __kernel_old_itimerval *)' and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:48:1: note: in expansion of macro 'SYS_NI'
      48 | SYS_NI(setitimer);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_getitimer' alias between functions of incompatible types 'long int(int,  struct __kernel_old_itimerval *)' and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:47:1: note: in expansion of macro 'SYS_NI'
      47 | SYS_NI(getitimer);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_clock_adjtime' alias between functions of incompatible types 'long int(clockid_t,  struct __kernel_timex *)' {aka 'long int(int,  struct __kernel_timex *)'} and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:46:1: note: in expansion of macro 'SYS_NI'
      46 | SYS_NI(clock_adjtime);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_timer_delete' alias between functions of incompatible types 'long int(timer_t)' {aka 'long int(int)'} and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:45:1: note: in expansion of macro 'SYS_NI'
      45 | SYS_NI(timer_delete);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_timer_settime' alias between functions of incompatible types 'long int(timer_t,  int,  const struct __kernel_itimerspec *, struct __kernel_itimerspec *)' {aka 'long int(int,  int,  const struct __kernel_itimerspec *, struct __kernel_itimerspec *)'} and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:44:1: note: in expansion of macro 'SYS_NI'
      44 | SYS_NI(timer_settime);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_timer_getoverrun' alias between functions of incompatible types 'long int(timer_t)' {aka 'long int(int)'} and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:43:1: note: in expansion of macro 'SYS_NI'
      43 | SYS_NI(timer_getoverrun);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~
   In file included from kernel/time/posix-stubs.c:9:
>> kernel/time/posix-stubs.c:34:43: warning: 'sys_timer_gettime' alias between functions of incompatible types 'long int(timer_t,  struct __kernel_itimerspec *)' {aka 'long int(int,  struct __kernel_itimerspec *)'} and 'long int(void)' [-Wattribute-alias=]
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                                           ^~~~
   kernel/time/posix-stubs.c:34:23: note: in expansion of macro 'SYSCALL_ALIAS_PROTO'
      34 | #define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
         |                       ^~~~~~~~~~~~~~~~~~~
   kernel/time/posix-stubs.c:42:1: note: in expansion of macro 'SYS_NI'
      42 | SYS_NI(timer_gettime);
         | ^~~~~~
   kernel/time/posix-stubs.c:25:17: note: aliased declaration here
      25 | asmlinkage long sys_ni_posix_timers(void)
         |                 ^~~~~~~~~~~~~~~~~~~


vim +34 kernel/time/posix-stubs.c

    24	
  > 25	asmlinkage long sys_ni_posix_timers(void)
    26	{
    27		pr_err_once("process %d (%s) attempted a POSIX timer syscall "
    28			    "while CONFIG_POSIX_TIMERS is not set\n",
    29			    current->pid, current->comm);
    30		return -ENOSYS;
    31	}
    32	
    33	#ifndef SYS_NI
  > 34	#define SYS_NI(name)  SYSCALL_ALIAS_PROTO(sys_##name, sys_ni_posix_timers)
    35	#endif
    36	
    37	#ifndef COMPAT_SYS_NI
    38	#define COMPAT_SYS_NI(name)  SYSCALL_ALIAS(compat_sys_##name, sys_ni_posix_timers)
    39	#endif
    40	
  > 41	SYS_NI(timer_create);
    42	SYS_NI(timer_gettime);
  > 43	SYS_NI(timer_getoverrun);
  > 44	SYS_NI(timer_settime);
  > 45	SYS_NI(timer_delete);
  > 46	SYS_NI(clock_adjtime);
  > 47	SYS_NI(getitimer);
  > 48	SYS_NI(setitimer);
  > 49	SYS_NI(clock_adjtime32);
    50	#ifdef __ARCH_WANT_SYS_ALARM
    51	SYS_NI(alarm);
    52	#endif
    53	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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