linux-kernel - [mcgrof-next:20211118-sysctl-cleanups-set-04-v4 41/41] kernel/kprobes.c:2604:9: error: implicit declaration of function 'kprobe_sysctls

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Date:   Tue, 23 Nov 2021 02:50:40 +0800
From:   kernel test robot <lkp@...el.com>
To:     Xiaoming Ni <nixiaoming@...wei.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Luis Chamberlain <mcgrof@...nel.org>
Subject: [mcgrof-next:20211118-sysctl-cleanups-set-04-v4 41/41]
 kernel/kprobes.c:2604:9: error: implicit declaration of function
 'kprobe_sysctls_init'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20211118-sysctl-cleanups-set-04-v4
head:   be45d1710bab2a205a293605be8696ecf8571084
commit: be45d1710bab2a205a293605be8696ecf8571084 [41/41] kprobe: move sysctl_kprobes_optimization to kprobes.c
config: arm64-randconfig-r022-20211118 (attached as .config)
compiler: aarch64-linux-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/mcgrof/linux-next.git/commit/?id=be45d1710bab2a205a293605be8696ecf8571084
        git remote add mcgrof-next https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git
        git fetch --no-tags mcgrof-next 20211118-sysctl-cleanups-set-04-v4
        git checkout be45d1710bab2a205a293605be8696ecf8571084
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arm64 

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 >>):

   kernel/kprobes.c: In function 'init_kprobes':
>> kernel/kprobes.c:2604:9: error: implicit declaration of function 'kprobe_sysctls_init' [-Werror=implicit-function-declaration]
    2604 |         kprobe_sysctls_init();
         |         ^~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/kprobe_sysctls_init +2604 kernel/kprobes.c

  2596	
  2597		err = arch_init_kprobes();
  2598		if (!err)
  2599			err = register_die_notifier(&kprobe_exceptions_nb);
  2600		if (!err)
  2601			err = register_module_notifier(&kprobe_module_nb);
  2602	
  2603		kprobes_initialized = (err == 0);
> 2604		kprobe_sysctls_init();
  2605		return err;
  2606	}
  2607	early_initcall(init_kprobes);
  2608	

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

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