linux-kernel - [jolsa-perf:kprobe/multi 9/14] kernel/bpf/syscall.c:3101:25: error: implicit declaration of function 'get_kretprobe'; did you mean 'get

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Date:   Wed, 5 Jan 2022 13:47:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [jolsa-perf:kprobe/multi 9/14] kernel/bpf/syscall.c:3101:25: error:
 implicit declaration of function 'get_kretprobe'; did you mean 'get_kprobe'?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git kprobe/multi
head:   27d253a29de023f664387fcc049edeeaadf23c8e
commit: b8b03607ea9875a92ea20941ebe6813fb052aeff [9/14] bpf: Add kprobe link for attaching raw kprobes
config: x86_64-buildonly-randconfig-r001-20220105 (https://download.01.org/0day-ci/archive/20220105/202201051354.QjvAtGDv-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?id=b8b03607ea9875a92ea20941ebe6813fb052aeff
        git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
        git fetch --no-tags jolsa-perf kprobe/multi
        git checkout b8b03607ea9875a92ea20941ebe6813fb052aeff
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/bpf/

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

All errors (new ones prefixed by >>):

   kernel/bpf/syscall.c: In function 'kretprobe_dispatcher':
>> kernel/bpf/syscall.c:3101:25: error: implicit declaration of function 'get_kretprobe'; did you mean 'get_kprobe'? [-Werror=implicit-function-declaration]
    3101 |  struct kretprobe *rp = get_kretprobe(ri);
         |                         ^~~~~~~~~~~~~
         |                         get_kprobe
   kernel/bpf/syscall.c:3101:25: warning: initialization of 'struct kretprobe *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
   cc1: some warnings being treated as errors


vim +3101 kernel/bpf/syscall.c

  3097	
  3098	static int
  3099	kretprobe_dispatcher(struct kretprobe_instance *ri, struct pt_regs *regs)
  3100	{
> 3101		struct kretprobe *rp = get_kretprobe(ri);
  3102		struct bpf_kprobe_link *kprobe_link;
  3103	
  3104		kprobe_link = container_of(rp, struct bpf_kprobe_link, rp);
  3105		return kprobe_link_prog_run(kprobe_link, regs);
  3106	}
  3107	

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