linux-kernel - [mark:fuzzing/5.10-rc7 1/4] include/linux/irqflags.h:224:1: error: function declaration isn't a prototype

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Date:   Wed, 29 Sep 2021 22:00:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [mark:fuzzing/5.10-rc7 1/4] include/linux/irqflags.h:224:1: error:
 function declaration isn't a prototype

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git fuzzing/5.10-rc7
head:   83abdaa512626051c6eecd7c1dfb41fb061ebcb9
commit: 61336e25d1415a4ac3aaf8cf75105c2ec2eb95e7 [1/4] lockdep: report broken irq restoration
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=61336e25d1415a4ac3aaf8cf75105c2ec2eb95e7
        git remote add mark https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
        git fetch --no-tags mark fuzzing/5.10-rc7
        git checkout 61336e25d1415a4ac3aaf8cf75105c2ec2eb95e7
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   WARNING: unmet direct dependencies detected for FRAME_POINTER
   Depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS
   Selected by
   - FAULT_INJECTION_STACKTRACE_FILTER && FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT && !X86_64 && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86
   scripts/Makefile.build:68: 'arch/ia64/kernel/palinfo.ko' 'arch/ia64/kernel/mca_recovery.ko' 'arch/ia64/kernel/err_inject.ko' will not be built even though obj-m is specified.
   scripts/Makefile.build:69: You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.
   In file included from include/linux/rcupdate.h:26,
   from include/linux/rculist.h:11,
   from include/linux/sched/signal.h:5,
   from arch/ia64/kernel/asm-offsets.c:10:
>> include/linux/irqflags.h:224:1: error: function declaration isn't a prototype
   224 | extern void warn_bogus_irq_restore();
   | ^~~~~~
   arch/ia64/kernel/asm-offsets.c:23:6: warning: no previous prototype for 'foo'
   23 | void foo(void)
   | ^~~
   cc1: some warnings being treated as errors
   Makefile arch include kernel nr_bisected scripts source usr [scripts/Makefile.build:117: arch/ia64/kernel/asm-offsets.s] Error 1
   Target '__build' not remade because of errors.
   Makefile arch include kernel nr_bisected scripts source usr [Makefile:1206: prepare0] Error 2
   Target 'prepare' not remade because of errors.
   make: Makefile arch include kernel nr_bisected scripts source usr [Makefile:185: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for FRAME_POINTER
   Depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS
   Selected by
   - FAULT_INJECTION_STACKTRACE_FILTER && FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT && !X86_64 && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86


vim +224 include/linux/irqflags.h

   222	
   223	#ifdef CONFIG_DEBUG_IRQFLAGS
 > 224	extern void warn_bogus_irq_restore();
   225	#define check_bogus_irq_restore()			\
   226		do {						\
   227			if (unlikely(!raw_irqs_disabled()))	\
   228				warn_bogus_irq_restore();	\
   229		} while (0)
   230	#else
   231	#define check_bogus_irq_restore() do { } while (0)
   232	#endif
   233	

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

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