linux-kernel - [ammarfaizi2-block:google/android/kernel/common/android13-5.10 9410/9999] kernel/gki_module.c:35:6: warning: no previous prototype for function 'gki_is_module_protected

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Date:   Fri, 28 Jan 2022 04:40:19 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ramji Jiyani <ramjiyani@...gle.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...weeb.org>,
        linux-kernel@...r.kernel.org
Subject: [ammarfaizi2-block:google/android/kernel/common/android13-5.10
 9410/9999] kernel/gki_module.c:35:6: warning: no previous prototype for
 function 'gki_is_module_protected_symbol'

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android13-5.10
head:   7edc8bc69d7def26c4528360c9ec96dbeadcd0a1
commit: 9ab6a242258a9ac17506b74c6ed7332703d536f4 [9410/9999] ANDROID: GKI: Add module load time protected symbol lookup
config: arm-randconfig-r023-20220127 (https://download.01.org/0day-ci/archive/20220128/202201280406.7Em0aA4W-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project f400a6012c668dfaa73462caf067ceb074e66c47)
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
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/ammarfaizi2/linux-block/commit/9ab6a242258a9ac17506b74c6ed7332703d536f4
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android13-5.10
        git checkout 9ab6a242258a9ac17506b74c6ed7332703d536f4
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

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/gki_module.c:35:6: warning: no previous prototype for function 'gki_is_module_protected_symbol' [-Wmissing-prototypes]
   bool gki_is_module_protected_symbol(const char *name)
        ^
   kernel/gki_module.c:35:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool gki_is_module_protected_symbol(const char *name)
   ^
   static 
>> kernel/gki_module.c:46:6: warning: no previous prototype for function 'gki_is_module_exported_symbol' [-Wmissing-prototypes]
   bool gki_is_module_exported_symbol(const char *name)
        ^
   kernel/gki_module.c:46:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool gki_is_module_exported_symbol(const char *name)
   ^
   static 
   2 warnings generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for PHYLINK
   Depends on NETDEVICES
   Selected by
   - GKI_HIDDEN_ETHERNET_CONFIGS
   WARNING: unmet direct dependencies detected for WEXT_SPY
   Depends on NET && WIRELESS
   Selected by
   - GKI_LEGACY_WEXT_ALLCONFIG
   WARNING: unmet direct dependencies detected for WIRELESS_EXT
   Depends on NET && WIRELESS
   Selected by
   - GKI_LEGACY_WEXT_ALLCONFIG
   WARNING: unmet direct dependencies detected for WEXT_CORE
   Depends on NET && WIRELESS && (CFG80211_WEXT || WIRELESS_EXT
   Selected by
   - GKI_LEGACY_WEXT_ALLCONFIG
   WARNING: unmet direct dependencies detected for NET_PTP_CLASSIFY
   Depends on NET
   Selected by
   - GKI_HIDDEN_NET_CONFIGS
   WARNING: unmet direct dependencies detected for SND_PCM_IEC958
   Depends on SOUND && !UML && SND
   Selected by
   - GKI_HIDDEN_SND_SOC_CONFIGS
   WARNING: unmet direct dependencies detected for HMM_MIRROR
   Depends on MMU
   Selected by
   - GKI_HIDDEN_GPU_CONFIGS
   WARNING: unmet direct dependencies detected for WEXT_PROC
   Depends on NET && WIRELESS && PROC_FS && WEXT_CORE
   Selected by
   - GKI_LEGACY_WEXT_ALLCONFIG
   WARNING: unmet direct dependencies detected for WEXT_PRIV
   Depends on NET && WIRELESS
   Selected by
   - GKI_LEGACY_WEXT_ALLCONFIG
   WARNING: unmet direct dependencies detected for PAGE_POOL
   Depends on NET
   Selected by
   - GKI_HIDDEN_NET_CONFIGS


vim +/gki_is_module_protected_symbol +35 kernel/gki_module.c

    29	
    30	/**
    31	 * gki_is_module_protected_symbol - Is a symbol protected from unsigned module?
    32	 *
    33	 * @name:	Symbol being checked against protection from unsigned module
    34	 */
  > 35	bool gki_is_module_protected_symbol(const char *name)
    36	{
    37		return bsearch(name, gki_protected_symbols, NO_OF_PROTECTED_SYMBOLS,
    38			       MAX_PROTECTED_NAME_LEN, cmp_name) != NULL;
    39	}
    40	
    41	/**
    42	 * gki_is_module_exported_symbol - Is a symbol exported from a GKI module?
    43	 *
    44	 * @name:	Symbol being checked against exported symbols from GKI modules
    45	 */
  > 46	bool gki_is_module_exported_symbol(const char *name)

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