linux-kernel - [tip:tmp.tmp2 176/364] include/linux/coredump.h:37:45: warning: 'struct kernel_siginfo' declared inside parameter list will not be visible outside of this definition or declaration

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Message-ID: <202106140441.qO5PdKhx-lkp@intel.com>
Date:   Mon, 14 Jun 2021 04:49:44 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        x86@...nel.org
Subject: [tip:tmp.tmp2 176/364] include/linux/coredump.h:37:45: warning:
 'struct kernel_siginfo' declared inside parameter list will not be visible
 outside of this definition or declaration

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tmp.tmp2
head:   adcceb5eb7aee38e4a9c15bdf599655f0e1b1324
commit: be65473fb5b77d57d8955beffd5aa370cfdae467 [176/364] sched/headers, rcu: Remove <linux/sched/signal.h> dependency from <linux/rcuwait.h>
config: i386-tinyconfig (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/tip/tip.git/commit/?id=be65473fb5b77d57d8955beffd5aa370cfdae467
        git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
        git fetch --no-tags tip tmp.tmp2
        git checkout be65473fb5b77d57d8955beffd5aa370cfdae467
        # 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 >>):

   In file included from arch/x86/events/intel/bts.c:16:
>> include/linux/coredump.h:37:45: warning: 'struct kernel_siginfo' declared inside parameter list will not be visible outside of this definition or declaration
      37 | static inline void do_coredump(const struct kernel_siginfo *siginfo) {}
         |                                             ^~~~~~~~~~~~~~


vim +37 include/linux/coredump.h

    19	
    20	/*
    21	 * These are the only things you should do on a core-file: use only these
    22	 * functions to write out all the necessary info.
    23	 */
    24	struct coredump_params;
    25	struct kernel_siginfo;
    26	extern void dump_skip_to(struct coredump_params *cprm, unsigned long to);
    27	extern void dump_skip(struct coredump_params *cprm, size_t nr);
    28	extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr);
    29	extern int dump_align(struct coredump_params *cprm, int align);
    30	int dump_user_range(struct coredump_params *cprm, unsigned long start,
    31			    unsigned long len);
    32	int dump_vma_snapshot(struct coredump_params *cprm, int *vma_count,
    33			      struct core_vma_metadata **vma_meta,
    34			      size_t *vma_data_size_ptr);
    35	extern void do_coredump(const struct kernel_siginfo *siginfo);
    36	#else
  > 37	static inline void do_coredump(const struct kernel_siginfo *siginfo) {}
    38	#endif
    39	

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

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