Re: [PATCH bpf-next] bpf: Prevent bpf program recursion for raw tracepoint probes

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

Hi Jiri,

I love your patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Jiri-Olsa/bpf-Prevent-bpf-program-recursion-for-raw-tracepoint-probes/20220908-194832
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: x86_64-randconfig-c022 (https://download.01.org/0day-ci/archive/20220909/202209091544.TU8KWEUM-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/f68b567cfb6572c20e431242a440cc5f01452485
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Jiri-Olsa/bpf-Prevent-bpf-program-recursion-for-raw-tracepoint-probes/20220908-194832
        git checkout f68b567cfb6572c20e431242a440cc5f01452485
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   ld: kernel/trace/bpf_trace.o: in function `__bpf_trace_run':
   kernel/trace/bpf_trace.c:2046: undefined reference to `bpf_prog_inc_misses_counter'
>> ld: kernel/trace/bpf_trace.c:2046: undefined reference to `bpf_prog_inc_misses_counter'
>> ld: kernel/trace/bpf_trace.c:2046: undefined reference to `bpf_prog_inc_misses_counter'
>> ld: kernel/trace/bpf_trace.c:2046: undefined reference to `bpf_prog_inc_misses_counter'
>> ld: kernel/trace/bpf_trace.c:2046: undefined reference to `bpf_prog_inc_misses_counter'
   ld: kernel/trace/bpf_trace.o:kernel/trace/bpf_trace.c:2046: more undefined references to `bpf_prog_inc_misses_counter' follow

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