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Subject[mingo-tip:master 413/2335] kernel/bpf/core.c:62:6: warning: no previous prototype for 'bpf_jit_dump'
tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git master
head: 85293bf3fca6d85608cff1447ce3097583f15fab
commit: 13afaa4b6ebba9ee9365fa7688a8d7f3fff97749 [413/2335] headers/uninline: Uninline multi-use function: bpf_jit_dump()
config: i386-randconfig-a001-20220314 (https://download.01.org/0day-ci/archive/20220317/202203170410.uapuR37c-lkp@intel.com/config)
compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04) 9.4.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=13afaa4b6ebba9ee9365fa7688a8d7f3fff97749
git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
git fetch --no-tags mingo-tip master
git checkout 13afaa4b6ebba9ee9365fa7688a8d7f3fff97749
# save the config file to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/entry/vdso/ arch/x86/pci/ kernel/bpf/ kernel/trace/ lib/

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

All warnings (new ones prefixed by >>):

>> kernel/bpf/core.c:62:6: warning: no previous prototype for 'bpf_jit_dump' [-Wmissing-prototypes]
62 | void bpf_jit_dump(unsigned int flen, unsigned int proglen, u32 pass, void *image)
| ^~~~~~~~~~~~
kernel/bpf/core.c:1378:12: warning: no previous prototype for 'bpf_probe_read_kernel' [-Wmissing-prototypes]
1378 | u64 __weak bpf_probe_read_kernel(void *dst, u32 size, const void *unsafe_ptr)
| ^~~~~~~~~~~~~~~~~~~~~


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
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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