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* [zen-kernel-zen-kernel:5.12/futex2 1/16] arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_futex_wait'
@ 2021-06-16  2:01 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-06-16  2:01 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 21529 bytes --]

tree:   https://github.com/zen-kernel/zen-kernel 5.12/futex2
head:   81255c11c48cc2302883425c87318f9cad37e7e6
commit: 64cdae0a6364c651f13a9ba90f6a8fadd7e1b9f7 [1/16] futex2: Implement wait and wake functions
config: x86_64-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/zen-kernel/zen-kernel/commit/64cdae0a6364c651f13a9ba90f6a8fadd7e1b9f7
        git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen-kernel-zen-kernel 5.12/futex2
        git checkout 64cdae0a6364c651f13a9ba90f6a8fadd7e1b9f7
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

         |  ^~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:147:1: note: in expansion of macro 'COND_SYSCALL'
     147 | COND_SYSCALL(futex_time32);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_set_robust_list' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
     100 |  __COND_SYSCALL(x64, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
     256 |  __X64_COND_SYSCALL(name)     \
         |  ^~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:148:1: note: in expansion of macro 'COND_SYSCALL'
     148 | COND_SYSCALL(set_robust_list);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_set_robust_list' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
     120 |  __COND_SYSCALL(ia32, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
     257 |  __IA32_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:148:1: note: in expansion of macro 'COND_SYSCALL'
     148 | COND_SYSCALL(set_robust_list);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_compat_sys_set_robust_list' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:148:2: note: in expansion of macro '__COND_SYSCALL'
     148 |  __COND_SYSCALL(ia32, compat_sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:218:2: note: in expansion of macro '__IA32_COMPAT_COND_SYSCALL'
     218 |  __IA32_COMPAT_COND_SYSCALL(name)    \
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:149:1: note: in expansion of macro 'COND_SYSCALL_COMPAT'
     149 | COND_SYSCALL_COMPAT(set_robust_list);
         | ^~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x32_compat_sys_set_robust_list' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:175:2: note: in expansion of macro '__COND_SYSCALL'
     175 |  __COND_SYSCALL(x32, compat_sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:219:2: note: in expansion of macro '__X32_COMPAT_COND_SYSCALL'
     219 |  __X32_COMPAT_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:149:1: note: in expansion of macro 'COND_SYSCALL_COMPAT'
     149 | COND_SYSCALL_COMPAT(set_robust_list);
         | ^~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_get_robust_list' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
     100 |  __COND_SYSCALL(x64, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
     256 |  __X64_COND_SYSCALL(name)     \
         |  ^~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:150:1: note: in expansion of macro 'COND_SYSCALL'
     150 | COND_SYSCALL(get_robust_list);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_get_robust_list' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
     120 |  __COND_SYSCALL(ia32, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
     257 |  __IA32_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:150:1: note: in expansion of macro 'COND_SYSCALL'
     150 | COND_SYSCALL(get_robust_list);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_compat_sys_get_robust_list' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:148:2: note: in expansion of macro '__COND_SYSCALL'
     148 |  __COND_SYSCALL(ia32, compat_sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:218:2: note: in expansion of macro '__IA32_COMPAT_COND_SYSCALL'
     218 |  __IA32_COMPAT_COND_SYSCALL(name)    \
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:151:1: note: in expansion of macro 'COND_SYSCALL_COMPAT'
     151 | COND_SYSCALL_COMPAT(get_robust_list);
         | ^~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x32_compat_sys_get_robust_list' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:175:2: note: in expansion of macro '__COND_SYSCALL'
     175 |  __COND_SYSCALL(x32, compat_sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:219:2: note: in expansion of macro '__X32_COMPAT_COND_SYSCALL'
     219 |  __X32_COMPAT_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:151:1: note: in expansion of macro 'COND_SYSCALL_COMPAT'
     151 | COND_SYSCALL_COMPAT(get_robust_list);
         | ^~~~~~~~~~~~~~~~~~~
>> arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_futex_wait' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
     100 |  __COND_SYSCALL(x64, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
     256 |  __X64_COND_SYSCALL(name)     \
         |  ^~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:154:1: note: in expansion of macro 'COND_SYSCALL'
     154 | COND_SYSCALL(futex_wait);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_futex_wait' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
     120 |  __COND_SYSCALL(ia32, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
     257 |  __IA32_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:154:1: note: in expansion of macro 'COND_SYSCALL'
     154 | COND_SYSCALL(futex_wait);
         | ^~~~~~~~~~~~
>> arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_futex_wake' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
     100 |  __COND_SYSCALL(x64, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
     256 |  __X64_COND_SYSCALL(name)     \
         |  ^~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:155:1: note: in expansion of macro 'COND_SYSCALL'
     155 | COND_SYSCALL(futex_wake);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_futex_wake' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
     120 |  __COND_SYSCALL(ia32, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
     257 |  __IA32_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:155:1: note: in expansion of macro 'COND_SYSCALL'
     155 | COND_SYSCALL(futex_wake);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_kexec_load' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
     100 |  __COND_SYSCALL(x64, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
     256 |  __X64_COND_SYSCALL(name)     \
         |  ^~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:162:1: note: in expansion of macro 'COND_SYSCALL'
     162 | COND_SYSCALL(kexec_load);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_kexec_load' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
     120 |  __COND_SYSCALL(ia32, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
     257 |  __IA32_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:162:1: note: in expansion of macro 'COND_SYSCALL'
     162 | COND_SYSCALL(kexec_load);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_compat_sys_kexec_load' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:148:2: note: in expansion of macro '__COND_SYSCALL'
     148 |  __COND_SYSCALL(ia32, compat_sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:218:2: note: in expansion of macro '__IA32_COMPAT_COND_SYSCALL'
     218 |  __IA32_COMPAT_COND_SYSCALL(name)    \
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:163:1: note: in expansion of macro 'COND_SYSCALL_COMPAT'
     163 | COND_SYSCALL_COMPAT(kexec_load);
         | ^~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x32_compat_sys_kexec_load' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:175:2: note: in expansion of macro '__COND_SYSCALL'
     175 |  __COND_SYSCALL(x32, compat_sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:219:2: note: in expansion of macro '__X32_COMPAT_COND_SYSCALL'
     219 |  __X32_COMPAT_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:163:1: note: in expansion of macro 'COND_SYSCALL_COMPAT'
     163 | COND_SYSCALL_COMPAT(kexec_load);
         | ^~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_init_module' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
     100 |  __COND_SYSCALL(x64, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:256:2: note: in expansion of macro '__X64_COND_SYSCALL'
     256 |  __X64_COND_SYSCALL(name)     \
         |  ^~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:166:1: note: in expansion of macro 'COND_SYSCALL'
     166 | COND_SYSCALL(init_module);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__ia32_sys_init_module' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:120:2: note: in expansion of macro '__COND_SYSCALL'
     120 |  __COND_SYSCALL(ia32, sys_##name)
         |  ^~~~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:257:2: note: in expansion of macro '__IA32_COND_SYSCALL'
     257 |  __IA32_COND_SYSCALL(name)
         |  ^~~~~~~~~~~~~~~~~~~
   kernel/sys_ni.c:166:1: note: in expansion of macro 'COND_SYSCALL'
     166 | COND_SYSCALL(init_module);
         | ^~~~~~~~~~~~
   arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_delete_module' [-Wmissing-prototypes]
      83 |  __weak long __##abi##_##name(const struct pt_regs *__unused) \
         |              ^~
   arch/x86/include/asm/syscall_wrapper.h:100:2: note: in expansion of macro '__COND_SYSCALL'
     100 |  __COND_SYSCALL(x64, sys_##name)


vim +/__x64_sys_futex_wait +83 arch/x86/include/asm/syscall_wrapper.h

cc42c045af1ff4 Brian Gerst       2020-03-13  13  
25c619e59b395a Brian Gerst       2020-03-13  14  /*
25c619e59b395a Brian Gerst       2020-03-13  15   * Instead of the generic __SYSCALL_DEFINEx() definition, the x86 version takes
25c619e59b395a Brian Gerst       2020-03-13  16   * struct pt_regs *regs as the only argument of the syscall stub(s) named as:
25c619e59b395a Brian Gerst       2020-03-13  17   * __x64_sys_*()         - 64-bit native syscall
25c619e59b395a Brian Gerst       2020-03-13  18   * __ia32_sys_*()        - 32-bit native syscall or common compat syscall
25c619e59b395a Brian Gerst       2020-03-13  19   * __ia32_compat_sys_*() - 32-bit compat syscall
25c619e59b395a Brian Gerst       2020-03-13  20   * __x32_compat_sys_*()  - 64-bit X32 compat syscall
25c619e59b395a Brian Gerst       2020-03-13  21   *
25c619e59b395a Brian Gerst       2020-03-13  22   * The registers are decoded according to the ABI:
25c619e59b395a Brian Gerst       2020-03-13  23   * 64-bit: RDI, RSI, RDX, R10, R8, R9
25c619e59b395a Brian Gerst       2020-03-13  24   * 32-bit: EBX, ECX, EDX, ESI, EDI, EBP
25c619e59b395a Brian Gerst       2020-03-13  25   *
25c619e59b395a Brian Gerst       2020-03-13  26   * The stub then passes the decoded arguments to the __se_sys_*() wrapper to
25c619e59b395a Brian Gerst       2020-03-13  27   * perform sign-extension (omitted for zero-argument syscalls).  Finally the
25c619e59b395a Brian Gerst       2020-03-13  28   * arguments are passed to the __do_sys_*() function which is the actual
25c619e59b395a Brian Gerst       2020-03-13  29   * syscall.  These wrappers are marked as inline so the compiler can optimize
25c619e59b395a Brian Gerst       2020-03-13  30   * the functions where appropriate.
25c619e59b395a Brian Gerst       2020-03-13  31   *
25c619e59b395a Brian Gerst       2020-03-13  32   * Example assembly (slightly re-ordered for better readability):
25c619e59b395a Brian Gerst       2020-03-13  33   *
25c619e59b395a Brian Gerst       2020-03-13  34   * <__x64_sys_recv>:		<-- syscall with 4 parameters
25c619e59b395a Brian Gerst       2020-03-13  35   *	callq	<__fentry__>
25c619e59b395a Brian Gerst       2020-03-13  36   *
25c619e59b395a Brian Gerst       2020-03-13  37   *	mov	0x70(%rdi),%rdi	<-- decode regs->di
25c619e59b395a Brian Gerst       2020-03-13  38   *	mov	0x68(%rdi),%rsi	<-- decode regs->si
25c619e59b395a Brian Gerst       2020-03-13  39   *	mov	0x60(%rdi),%rdx	<-- decode regs->dx
25c619e59b395a Brian Gerst       2020-03-13  40   *	mov	0x38(%rdi),%rcx	<-- decode regs->r10
25c619e59b395a Brian Gerst       2020-03-13  41   *
25c619e59b395a Brian Gerst       2020-03-13  42   *	xor	%r9d,%r9d	<-- clear %r9
25c619e59b395a Brian Gerst       2020-03-13  43   *	xor	%r8d,%r8d	<-- clear %r8
25c619e59b395a Brian Gerst       2020-03-13  44   *
25c619e59b395a Brian Gerst       2020-03-13  45   *	callq	__sys_recvfrom	<-- do the actual work in __sys_recvfrom()
25c619e59b395a Brian Gerst       2020-03-13  46   *				    which takes 6 arguments
25c619e59b395a Brian Gerst       2020-03-13  47   *
25c619e59b395a Brian Gerst       2020-03-13  48   *	cltq			<-- extend return value to 64-bit
25c619e59b395a Brian Gerst       2020-03-13  49   *	retq			<-- return
25c619e59b395a Brian Gerst       2020-03-13  50   *
25c619e59b395a Brian Gerst       2020-03-13  51   * This approach avoids leaking random user-provided register content down
25c619e59b395a Brian Gerst       2020-03-13  52   * the call chain.
25c619e59b395a Brian Gerst       2020-03-13  53   */
25c619e59b395a Brian Gerst       2020-03-13  54  
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  55  /* Mapping of registers to parameters for syscalls on x86-64 and x32 */
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  56  #define SC_X86_64_REGS_TO_ARGS(x, ...)					\
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  57  	__MAP(x,__SC_ARGS						\
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  58  		,,regs->di,,regs->si,,regs->dx				\
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  59  		,,regs->r10,,regs->r8,,regs->r9)			\
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  60  
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  61  /* Mapping of registers to parameters for syscalls on i386 */
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  62  #define SC_IA32_REGS_TO_ARGS(x, ...)					\
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  63  	__MAP(x,__SC_ARGS						\
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  64  	      ,,(unsigned int)regs->bx,,(unsigned int)regs->cx		\
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  65  	      ,,(unsigned int)regs->dx,,(unsigned int)regs->si		\
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  66  	      ,,(unsigned int)regs->di,,(unsigned int)regs->bp)
ebeb8c82ffaf94 Dominik Brodowski 2018-04-05  67  
d2b5de495ee983 Brian Gerst       2020-03-13  68  #define __SYS_STUB0(abi, name)						\
0f78ff17112d8b Brian Gerst       2020-03-13  69  	long __##abi##_##name(const struct pt_regs *regs);		\
d2b5de495ee983 Brian Gerst       2020-03-13  70  	ALLOW_ERROR_INJECTION(__##abi##_##name, ERRNO);			\
0f78ff17112d8b Brian Gerst       2020-03-13  71  	long __##abi##_##name(const struct pt_regs *regs)		\
d2b5de495ee983 Brian Gerst       2020-03-13  72  		__alias(__do_##name);
d2b5de495ee983 Brian Gerst       2020-03-13  73  
4399e0cf494f73 Brian Gerst       2020-03-13  74  #define __SYS_STUBx(abi, name, ...)					\
0f78ff17112d8b Brian Gerst       2020-03-13  75  	long __##abi##_##name(const struct pt_regs *regs);		\
4399e0cf494f73 Brian Gerst       2020-03-13  76  	ALLOW_ERROR_INJECTION(__##abi##_##name, ERRNO);			\
0f78ff17112d8b Brian Gerst       2020-03-13  77  	long __##abi##_##name(const struct pt_regs *regs)		\
4399e0cf494f73 Brian Gerst       2020-03-13  78  	{								\
4399e0cf494f73 Brian Gerst       2020-03-13  79  		return __se_##name(__VA_ARGS__);			\
4399e0cf494f73 Brian Gerst       2020-03-13  80  	}
4399e0cf494f73 Brian Gerst       2020-03-13  81  
6cc8d2b286d9e7 Brian Gerst       2020-03-13  82  #define __COND_SYSCALL(abi, name)					\
0f78ff17112d8b Brian Gerst       2020-03-13 @83  	__weak long __##abi##_##name(const struct pt_regs *__unused)	\
6cc8d2b286d9e7 Brian Gerst       2020-03-13  84  	{								\
6cc8d2b286d9e7 Brian Gerst       2020-03-13  85  		return sys_ni_syscall();				\
6cc8d2b286d9e7 Brian Gerst       2020-03-13  86  	}
6cc8d2b286d9e7 Brian Gerst       2020-03-13  87  

:::::: The code at line 83 was first introduced by commit
:::::: 0f78ff17112d8b3469b805ff4ea9780cc1e5c93b x86/entry: Drop asmlinkage from syscalls

:::::: TO: Brian Gerst <brgerst@gmail.com>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>

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

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2021-06-16  2:01 [zen-kernel-zen-kernel:5.12/futex2 1/16] arch/x86/include/asm/syscall_wrapper.h:83:14: warning: no previous prototype for '__x64_sys_futex_wait' kernel test robot

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