[linux-next:master 11857/12841] arch/riscv/net/bpf_jit_comp64.c:462:5: error: no previous prototype for 'rv_bpf_fixup_exception'

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   bdcc9f6a568275aed4cc32fd2312432d2ff1b704
commit: 252c765bd764a246a8bd516fabf6d6123df4a24f [11857/12841] riscv, bpf: Add BPF exception tables
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-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/next/linux-next.git/commit/?id=252c765bd764a246a8bd516fabf6d6123df4a24f
        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 252c765bd764a246a8bd516fabf6d6123df4a24f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=riscv 

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

All errors (new ones prefixed by >>):

>> arch/riscv/net/bpf_jit_comp64.c:462:5: error: no previous prototype for 'rv_bpf_fixup_exception' [-Werror=missing-prototypes]
     462 | int rv_bpf_fixup_exception(const struct exception_table_entry *ex,
         |     ^~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/rv_bpf_fixup_exception +462 arch/riscv/net/bpf_jit_comp64.c

   461	
 > 462	int rv_bpf_fixup_exception(const struct exception_table_entry *ex,
   463					struct pt_regs *regs)
   464	{
   465		off_t offset = FIELD_GET(BPF_FIXUP_OFFSET_MASK, ex->fixup);
   466		int regs_offset = FIELD_GET(BPF_FIXUP_REG_MASK, ex->fixup);
   467	
   468		*(unsigned long *)((void *)regs + pt_regmap[regs_offset]) = 0;
   469		regs->epc = (unsigned long)&ex->fixup - offset;
   470	
   471		return 1;
   472	}
   473	

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

Attachment: .config.gz
Description: application/gzip


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