Re: [PATCH v2 1/2] libbpf: kprobe.multi: cross filter using available_filter_functions and kallsyms

[kernel test robot <lkp@intel.com>]

Hi Jackie,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]
[also build test ERROR on bpf/master linus/master v6.4 next-20230630]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Jackie-Liu/libbpf-kprobe-multi-Filter-with-available_filter_functions_addrs/20230701-161010
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20230701080817.1768865-1-liu.yun%40linux.dev
patch subject: [PATCH v2 1/2] libbpf: kprobe.multi: cross filter using available_filter_functions and kallsyms
config: x86_64-buildonly-randconfig-r001-20230702 (https://download.01.org/0day-ci/archive/20230703/202307030355.TdXOHklM-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce: (https://download.01.org/0day-ci/archive/20230703/202307030355.TdXOHklM-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307030355.TdXOHklM-lkp@intel.com/

All errors (new ones prefixed by >>):

>> libbpf.c:10626:57: error: 'fscanf' may overflow; destination buffer in argument 4 has size 256, but the corresponding specifier may require size 500 [-Werror,-Wfortify-source]
                   ret = fscanf(f, "%llx %*c %499s%*[^\n]\n", &sym_addr, sym_name);
                                                                         ^
   1 error generated.
   make[5]: *** [tools/build/Makefile.build:97: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o] Error 1
   make[5]: *** Waiting for unfinished jobs....
   make[4]: *** [Makefile:157: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2
   make[3]: *** [Makefile:63: tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2
   make[2]: *** [Makefile:76: bpf/resolve_btfids] Error 2 shuffle=967315254
   make[1]: *** [Makefile:1446: tools/bpf/resolve_btfids] Error 2 shuffle=967315254
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:226: __sub-make] Error 2 shuffle=967315254
   make: Target 'prepare' not remade because of errors.

-- 
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https://github.com/intel/lkp-tests/wiki