On Tue, Jun 02, 2015 at 06:08:25AM +0800, kbuild test robot wrote:
> All error/warnings:
>
> In file included from include/linux/page-flags.h:9:0,
> from kernel/bounds.c:9:
> >> include/linux/bug.h:91:47: warning: 'struct bug_entry' declared inside parameter list
> static inline int is_warning_bug(const struct bug_entry *bug)
> ^
> >> include/linux/bug.h:91:47: warning: its scope is only this definition or declaration, which is probably not what you want
> include/linux/bug.h: In function 'is_warning_bug':
> >> include/linux/bug.h:93:12: error: dereferencing pointer to incomplete type
> return bug->flags & BUGFLAG_WARNING;
> ^
> make[2]: *** [kernel/bounds.s] Error 1
> make[2]: Target '__build' not remade because of errors.
> make[1]: *** [prepare0] Error 2
> make[1]: Target 'prepare' not remade because of errors.
> make: *** [sub-make] Error 2
>
> vim +93 include/linux/bug.h
>
> 35edd910 Paul Gortmaker 2011-11-16 85
> 35edd910 Paul Gortmaker 2011-11-16 86 #endif /* __CHECKER__ */
> 35edd910 Paul Gortmaker 2011-11-16 87
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 88 #ifdef CONFIG_GENERIC_BUG
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 89 #include <asm-generic/bug.h>
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 90
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 @91 static inline int is_warning_bug(const struct bug_entry *bug)
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 92 {
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 @93 return bug->flags & BUGFLAG_WARNING;
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 94 }
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 95
> 7664c5a1 Jeremy Fitzhardinge 2006-12-08 96 const struct bug_entry *find_bug(unsigned long bugaddr);
This looks like a bug in mn10300. This code is within an ifdef on
CONFIG_GENERIC_BUG, and the declaration of the structure is within
ifdefs on both CONFIG_GENERIC_BUG and CONFIG_BUG, but:
> CONFIG_MN10300=y
[...]
> CONFIG_GENERIC_BUG=y
[...]
> # CONFIG_BUG is not set
Other architectures, including x86 (arch/x86/Kconfig) and powerpc
(arch/powerpc/Kconfig) have GENERIC_BUG depend on BUG. Looks like
mn10300 doesn't.
- Josh Triplett
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