linux-kernel - undefined reference to `printk'

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Date:   Sun, 25 Sep 2016 11:40:42 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Joe Perches <joe@...ches.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: undefined reference to `printk'

Hi Joe,

It's probably a bug fix that unveils the link errors.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   9c0e28a7be656d737fb18998e2dcb0b8ce595643
commit: cb984d101b30eb7478d32df56a0023e4603cba7f compiler-gcc: integrate the various compiler-gcc[345].h files
date:   1 year, 3 months ago
config: m32r-allnoconfig (attached as .config)
compiler: m32r-linux-gcc (GCC) 6.2.0
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout cb984d101b30eb7478d32df56a0023e4603cba7f
        # save the attached .config to linux build tree
        make.cross ARCH=m32r 

All errors (new ones prefixed by >>):

   arch/m32r/kernel/built-in.o: In function `default_eit_handler':
>> (.text+0x3fc): undefined reference to `printk'
   arch/m32r/kernel/built-in.o: In function `default_eit_handler':
   (.text+0x3fc): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `printk'

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