linux-kernel - [tglx-devel:x86/fpu-3-kvm 26/65] arch/x86/kernel/ptrace.c:1311:13: error: no previous prototype for function 'update_regset_xstate

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Message-ID: <202110161206.5R5FAAsl-lkp@intel.com>
Date:   Sat, 16 Oct 2021 12:00:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [tglx-devel:x86/fpu-3-kvm 26/65] arch/x86/kernel/ptrace.c:1311:13:
 error: no previous prototype for function 'update_regset_xstate_info'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/fpu-3-kvm
head:   567aa15fa5d336b777bd277f52412bd9f8be1585
commit: 22553a4cfe428edf5b399552abc2ffd22918c4a9 [26/65] x86/fpu: Remove internal.h dependency from fpu/signal.h
config: x86_64-buildonly-randconfig-r003-20211015 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6069a6a5049497a32a50a49661c2f4169078bdba)
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/tglx/devel.git/commit/?id=22553a4cfe428edf5b399552abc2ffd22918c4a9
        git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git
        git fetch --no-tags tglx-devel x86/fpu-3-kvm
        git checkout 22553a4cfe428edf5b399552abc2ffd22918c4a9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 

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

All errors (new ones prefixed by >>):

>> arch/x86/kernel/ptrace.c:1311:13: error: no previous prototype for function 'update_regset_xstate_info' [-Werror,-Wmissing-prototypes]
   void __init update_regset_xstate_info(unsigned int size, u64 xstate_mask)
               ^
   arch/x86/kernel/ptrace.c:1311:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init update_regset_xstate_info(unsigned int size, u64 xstate_mask)
   ^
   static 
   1 error generated.


vim +/update_regset_xstate_info +1311 arch/x86/kernel/ptrace.c

5b3efd500854d4 Suresh Siddha 2010-02-11  1310  
404f6aac9b3ef5 Kees Cook     2016-08-08 @1311  void __init update_regset_xstate_info(unsigned int size, u64 xstate_mask)
5b3efd500854d4 Suresh Siddha 2010-02-11  1312  {
5b3efd500854d4 Suresh Siddha 2010-02-11  1313  #ifdef CONFIG_X86_64
5b3efd500854d4 Suresh Siddha 2010-02-11  1314  	x86_64_regsets[REGSET_XSTATE].n = size / sizeof(u64);
5b3efd500854d4 Suresh Siddha 2010-02-11  1315  #endif
5b3efd500854d4 Suresh Siddha 2010-02-11  1316  #if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
5b3efd500854d4 Suresh Siddha 2010-02-11  1317  	x86_32_regsets[REGSET_XSTATE].n = size / sizeof(u64);
5b3efd500854d4 Suresh Siddha 2010-02-11  1318  #endif
5b3efd500854d4 Suresh Siddha 2010-02-11  1319  	xstate_fx_sw_bytes[USER_XSTATE_XCR0_WORD] = xstate_mask;
5b3efd500854d4 Suresh Siddha 2010-02-11  1320  }
5b3efd500854d4 Suresh Siddha 2010-02-11  1321  

:::::: The code at line 1311 was first introduced by commit
:::::: 404f6aac9b3ef595735feca99979db084ea48315 x86: Apply more __ro_after_init and const

:::::: TO: Kees Cook <keescook@...omium.org>
:::::: CC: Ingo Molnar <mingo@...nel.org>

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

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