Hi Eric, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] [also build test WARNING on bpf/master linus/master next-20240925] [cannot apply to v6.11] [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/Eric-Yan/Add-BPF-Kernel-Function-bpf_ptrace_vprintk/20240925-180530 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20240925100254.436-1-eric.yan%40oppo.com patch subject: [PATCH] Add BPF Kernel Function bpf_ptrace_vprintk config: x86_64-buildonly-randconfig-003-20240926 (https://download.01.org/0day-ci/archive/20240926/202409261116.risxWG3M-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240926/202409261116.risxWG3M-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202409261116.risxWG3M-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> kernel/bpf/helpers.c:2530: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * same as bpf_trace_vprintk, except for a trace_marker format requirement vim +2530 kernel/bpf/helpers.c 2528 2529 /** > 2530 * same as bpf_trace_vprintk, except for a trace_marker format requirement 2531 */ 2532 __bpf_kfunc int bpf_ptrace_vprintk(char *fmt, u32 fmt_size, const void *args, u32 args__sz) 2533 { 2534 struct bpf_bprintf_data data = { 2535 .get_bin_args = true, 2536 .get_buf = true, 2537 }; 2538 int ret, num_args; 2539 2540 if (args__sz & 7 || args__sz > MAX_BPRINTF_VARARGS * 8 || (args__sz && !args)) 2541 return -EINVAL; 2542 num_args = args__sz / 8; 2543 2544 ret = bpf_bprintf_prepare(fmt, fmt_size, args, num_args, &data); 2545 if (ret < 0) 2546 return ret; 2547 2548 ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); 2549 2550 tracing_mark_write(data.buf); 2551 2552 bpf_bprintf_cleanup(&data); 2553 2554 return ret; 2555 } 2556 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
