linux-kernel - [mingo-tip:sched/headers 413/2574] kernel/bpf/core.c:62:6: warning: no previous prototype for function 'bpf_jit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <202202210906.6oI53C71-lkp@intel.com>
Date:   Mon, 21 Feb 2022 09:10:38 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [mingo-tip:sched/headers 413/2574] kernel/bpf/core.c:62:6: warning:
 no previous prototype for function 'bpf_jit_dump'

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head:   39e8a0edc8fae20758051dadf7846849edc18b88
commit: 693153354d8d8df0fd4fd0d81ca659ca9c96d2e9 [413/2574] headers/uninline: Uninline multi-use function: bpf_jit_dump()
config: x86_64-randconfig-a012 (https://download.01.org/0day-ci/archive/20220221/202202210906.6oI53C71-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
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/mingo/tip.git/commit/?id=693153354d8d8df0fd4fd0d81ca659ca9c96d2e9
        git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
        git fetch --no-tags mingo-tip sched/headers
        git checkout 693153354d8d8df0fd4fd0d81ca659ca9c96d2e9
        # 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=x86_64 SHELL=/bin/bash arch/x86/entry/vsyscall/ arch/x86/pci/ kernel/bpf/ kernel/sched/ kernel/trace/ lib/ net/ipv6/

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/bpf/core.c:62:6: warning: no previous prototype for function 'bpf_jit_dump' [-Wmissing-prototypes]
   void bpf_jit_dump(unsigned int flen, unsigned int proglen, u32 pass, void *image)
        ^
   kernel/bpf/core.c:62:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void bpf_jit_dump(unsigned int flen, unsigned int proglen, u32 pass, void *image)
   ^
   static 
   kernel/bpf/core.c:1378:12: warning: no previous prototype for function 'bpf_probe_read_kernel' [-Wmissing-prototypes]
   u64 __weak bpf_probe_read_kernel(void *dst, u32 size, const void *unsafe_ptr)
              ^
   kernel/bpf/core.c:1378:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   u64 __weak bpf_probe_read_kernel(void *dst, u32 size, const void *unsafe_ptr)
   ^
   static 
   2 warnings generated.


vim +/bpf_jit_dump +62 kernel/bpf/core.c

    61	
  > 62	void bpf_jit_dump(unsigned int flen, unsigned int proglen, u32 pass, void *image)
    63	{
    64		pr_err("flen=%u proglen=%u pass=%u image=%pK from=%s pid=%d\n", flen,
    65		       proglen, pass, image, current->comm, task_pid_nr(current));
    66	
    67		if (image)
    68			print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_OFFSET,
    69				       16, 1, image, proglen, false);
    70	}
    71	

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