Re: [PATCH v3 2/2] kernel.h: handle pointers to arrays better in container_of()

[kbuild test robot]

Hi Ian,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.12-rc2 next-20170524]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Ian-Abbott/kernel-h-container_of-pointer-checking/20170524-071605
config: x86_64-randconfig-n0-05242055 (attached as .config)
compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   In file included from include/linux/kernel.h:14:0,
                    from include/asm-generic/bug.h:15,
                    from arch/x86/include/asm/bug.h:81,
                    from drivers/block/drbd/drbd_interval.c:1:
   include/linux/bug.h:103:47: warning: 'struct bug_entry' declared inside parameter list [enabled by default]
    static inline int is_warning_bug(const struct bug_entry *bug)
                                                  ^
   include/linux/bug.h:103:47: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
   include/linux/bug.h: In function 'is_warning_bug':
>> include/linux/bug.h:105:12: error: dereferencing pointer to incomplete type
     return bug->flags & BUGFLAG_WARNING;
               ^

vim +105 include/linux/bug.h

ff20c2e0 Kirill A. Shutemov  2016-03-01   97  
35edd910 Paul Gortmaker      2011-11-16   98  #endif	/* __CHECKER__ */
35edd910 Paul Gortmaker      2011-11-16   99  
7664c5a1 Jeremy Fitzhardinge 2006-12-08  100  #ifdef CONFIG_GENERIC_BUG
7664c5a1 Jeremy Fitzhardinge 2006-12-08  101  #include <asm-generic/bug.h>
7664c5a1 Jeremy Fitzhardinge 2006-12-08  102  
7664c5a1 Jeremy Fitzhardinge 2006-12-08 @103  static inline int is_warning_bug(const struct bug_entry *bug)
7664c5a1 Jeremy Fitzhardinge 2006-12-08  104  {
7664c5a1 Jeremy Fitzhardinge 2006-12-08 @105  	return bug->flags & BUGFLAG_WARNING;
7664c5a1 Jeremy Fitzhardinge 2006-12-08  106  }
7664c5a1 Jeremy Fitzhardinge 2006-12-08  107  
19d43626 Peter Zijlstra      2017-02-25  108  struct bug_entry *find_bug(unsigned long bugaddr);

:::::: The code at line 105 was first introduced by commit
:::::: 7664c5a1da4711bb6383117f51b94c8dc8f3f1cd [PATCH] Generic BUG implementation

:::::: TO: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxx>

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0-DAY kernel test infrastructure                Open Source Technology Center
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