linux-kernel - [jirislaby:devel 41/62] include/asm-generic/bug.h:68:3: error: implicit declaration of function 'printk'; did you mean '

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Date:   Thu, 22 Jul 2021 07:27:19 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jiri Slaby <jslaby@...e.cz>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [jirislaby:devel 41/62] include/asm-generic/bug.h:68:3: error:
 implicit declaration of function 'printk'; did you mean '_printk'?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel
head:   fb40a2c5242ac12784ec96caeede97082e3c1813
commit: a19a6a12ffba0cf0e400e6abefd49a87b119ff4a [41/62] include condition in the BUG_ON/WARN_ON output
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 10.3.0
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/jirislaby/linux.git/commit/?id=a19a6a12ffba0cf0e400e6abefd49a87b119ff4a
        git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git
        git fetch --no-tags jirislaby devel
        git checkout a19a6a12ffba0cf0e400e6abefd49a87b119ff4a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arm64 

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 >>):

   In file included from arch/arm64/include/asm/bug.h:26,
                    from include/linux/bug.h:5,
                    from include/linux/cpumask.h:14,
                    from include/linux/smp.h:13,
                    from include/linux/lockdep.h:14,
                    from include/linux/mutex.h:17,
                    from include/linux/kernfs.h:12,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from include/linux/irqdomain.h:35,
                    from include/linux/acpi.h:13,
                    from arch/arm64/kernel/setup.c:9:
   arch/arm64/kernel/setup.c: In function 'dump_kernel_offset':
>> include/asm-generic/bug.h:68:3: error: implicit declaration of function 'printk'; did you mean '_printk'? [-Werror=implicit-function-declaration]
      68 |   printk("BUG: '%s' is true!\n", __stringify(condition)); \
         |   ^~~~~~
   include/linux/mmdebug.h:17:25: note: in expansion of macro 'BUG_ON'
      17 | #define VM_BUG_ON(cond) BUG_ON(cond)
         |                         ^~~~~~
   arch/arm64/include/asm/memory.h:184:25: note: in expansion of macro 'VM_BUG_ON'
     184 | #define PHYS_OFFSET  ({ VM_BUG_ON(memstart_addr & 1); memstart_addr; })
         |                         ^~~~~~~~~
   include/linux/printk.h:430:19: note: in expansion of macro 'PHYS_OFFSET'
     430 |   _p_func(_fmt, ##__VA_ARGS__);    \
         |                   ^~~~~~~~~~~
   include/linux/printk.h:434:26: note: in expansion of macro 'printk_index_wrap'
     434 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
         |                          ^~~~~~~~~~~~~~~~~
   include/linux/printk.h:447:2: note: in expansion of macro 'printk'
     447 |  printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
         |  ^~~~~~
   arch/arm64/kernel/setup.c:422:3: note: in expansion of macro 'pr_emerg'
     422 |   pr_emerg("PHYS_OFFSET: 0x%llx\n", PHYS_OFFSET);
         |   ^~~~~~~~
   cc1: some warnings being treated as errors


vim +68 include/asm-generic/bug.h

    64	
    65	#ifndef HAVE_ARCH_BUG_ON
    66	#define BUG_ON(condition) do {						\
    67		if (unlikely(condition)) {					\
  > 68			printk("BUG: '%s' is true!\n", __stringify(condition));	\
    69			BUG();							\
    70		}								\
    71	} while(0)
    72	#endif
    73	

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

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