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* [linux-next:master 5982/10104] arch/s390/kernel/rethook.c:26:15: warning: no previous prototype for 'arch_rethook_trampoline_callback'
@ 2023-02-02 17:45 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-02-02 17:45 UTC (permalink / raw)
  To: Vasily Gorbik; +Cc: oe-kbuild-all, Linux Memory Management List, Heiko Carstens

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   ea4dabbb4ad7eb52632a2ca0b8f89f0ea7c55dcf
commit: 1a280f48c0e403903cf0b4231c95b948e664f25a [5982/10104] s390/kprobes: replace kretprobe with rethook
config: s390-randconfig-r011-20230202 (https://download.01.org/0day-ci/archive/20230203/202302030102.69dZIuJk-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 12.1.0
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/next/linux-next.git/commit/?id=1a280f48c0e403903cf0b4231c95b948e664f25a
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 1a280f48c0e403903cf0b4231c95b948e664f25a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash

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

Note: functions only called from assembly code should be annotated with the asmlinkage attribute
All warnings (new ones prefixed by >>):

>> arch/s390/kernel/rethook.c:26:15: warning: no previous prototype for 'arch_rethook_trampoline_callback' [-Wmissing-prototypes]
      26 | unsigned long arch_rethook_trampoline_callback(struct pt_regs *regs)
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/arch_rethook_trampoline_callback +26 arch/s390/kernel/rethook.c

    22	
    23	/*
    24	 * Called from arch_rethook_trampoline
    25	 */
  > 26	unsigned long arch_rethook_trampoline_callback(struct pt_regs *regs)
    27	{
    28		return rethook_trampoline_handler(regs, regs->gprs[15]);
    29	}
    30	NOKPROBE_SYMBOL(arch_rethook_trampoline_callback);
    31	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests


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