linux-kernel - [jolsa-perf:bpf/get_func_ip 4/7] kernel/trace/bpf_trace.c:969:14: warning: cast from pointer to integer of different size

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Date:   Thu, 8 Jul 2021 07:47:30 +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:bpf/get_func_ip 4/7] kernel/trace/bpf_trace.c:969:14:
 warning: cast from pointer to integer of different size

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/get_func_ip
head:   c84a007788ef775c5e75c1359c6a4d38664b8136
commit: 77c4369d247b285e790bd8d3d346ba5e0b5bd752 [4/7] bpf: Add bpf_get_func_ip helper for kprobe programs
config: i386-allyesconfig (attached as .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=77c4369d247b285e790bd8d3d346ba5e0b5bd752
        git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
        git fetch --no-tags jolsa-perf bpf/get_func_ip
        git checkout 77c4369d247b285e790bd8d3d346ba5e0b5bd752
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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/trace/bpf_trace.c: In function '____bpf_get_func_ip_kprobe':
>> kernel/trace/bpf_trace.c:969:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     969 |  return kp ? (u64) kp->addr : 0;
         |              ^

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for PHY_SPARX5_SERDES
   Depends on (ARCH_SPARX5 || COMPILE_TEST && OF && HAS_IOMEM
   Selected by
   - SPARX5_SWITCH && NETDEVICES && ETHERNET && NET_VENDOR_MICROCHIP && NET_SWITCHDEV && HAS_IOMEM


vim +969 kernel/trace/bpf_trace.c

   964	
   965	BPF_CALL_1(bpf_get_func_ip_kprobe, struct pt_regs *, regs)
   966	{
   967		struct kprobe *kp = kprobe_running();
   968	
 > 969		return kp ? (u64) kp->addr : 0;
   970	}
   971	

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

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