linux-kernel - [tip:x86/asm 3/3] lib/bug.c:135: undefined reference to `__start___bug

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Message-ID: <201703302127.s9kml8XH%fengguang.wu@intel.com>
Date:   Thu, 30 Mar 2017 21:02:31 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        tipbuild@...or.com, Ingo Molnar <mingo@...nel.org>
Subject: [tip:x86/asm 3/3] lib/bug.c:135: undefined reference to
 `__start___bug_table'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/asm
head:   19d436268dde95389c616bb3819da73f0a8b28a8
commit: 19d436268dde95389c616bb3819da73f0a8b28a8 [3/3] debug: Add _ONCE() logic to report_bug()
config: arm-efm32_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 19d436268dde95389c616bb3819da73f0a8b28a8
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   lib/lib.a(bug.o): In function `find_bug':
>> lib/bug.c:135: undefined reference to `__start___bug_table'
>> lib/bug.c:135: undefined reference to `__stop___bug_table'

vim +135 lib/bug.c

7664c5a1 Jeremy Fitzhardinge 2006-12-08  129  #endif
7664c5a1 Jeremy Fitzhardinge 2006-12-08  130  
19d43626 Peter Zijlstra      2017-02-25  131  struct bug_entry *find_bug(unsigned long bugaddr)
7664c5a1 Jeremy Fitzhardinge 2006-12-08  132  {
19d43626 Peter Zijlstra      2017-02-25  133  	struct bug_entry *bug;
7664c5a1 Jeremy Fitzhardinge 2006-12-08  134  
7664c5a1 Jeremy Fitzhardinge 2006-12-08 @135  	for (bug = __start___bug_table; bug < __stop___bug_table; ++bug)
b93a531e Jan Beulich         2008-12-16  136  		if (bugaddr == bug_addr(bug))
7664c5a1 Jeremy Fitzhardinge 2006-12-08  137  			return bug;
7664c5a1 Jeremy Fitzhardinge 2006-12-08  138  

:::::: The code at line 135 was first introduced by commit
:::::: 7664c5a1da4711bb6383117f51b94c8dc8f3f1cd [PATCH] Generic BUG implementation

:::::: TO: Jeremy Fitzhardinge <jeremy@...p.org>
:::::: CC: Linus Torvalds <torvalds@...dy.osdl.org>

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