linux-kernel - [rcu:rcu/dev 46/46] arch/m32r/include/asm/cmpxchg.h:59: undefined reference to `__xchg_called_with_bad

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Date:   Wed, 15 Feb 2017 10:46:08 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: [rcu:rcu/dev 46/46] arch/m32r/include/asm/cmpxchg.h:59: undefined
 reference to `__xchg_called_with_bad_pointer'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/dev
head:   f09c1acfaa4b198694a31ba3e454c7d17c4fa680
commit: f09c1acfaa4b198694a31ba3e454c7d17c4fa680 [46/46] rcu: Add consistency checks for uses of segmented callback lists
config: m32r-usrv_defconfig (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 f09c1acfaa4b198694a31ba3e454c7d17c4fa680
        # save the attached .config to linux build tree
        make.cross ARCH=m32r 

All errors (new ones prefixed by >>):

   kernel/built-in.o: In function `__xchg':
>> arch/m32r/include/asm/cmpxchg.h:59: undefined reference to `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4c080): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
>> arch/m32r/include/asm/cmpxchg.h:59: undefined reference to `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4c0bc): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
>> arch/m32r/include/asm/cmpxchg.h:59: undefined reference to `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4db74): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
>> arch/m32r/include/asm/cmpxchg.h:59: undefined reference to `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4dbc0): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
>> arch/m32r/include/asm/cmpxchg.h:59: undefined reference to `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4dd14): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
   kernel/built-in.o:arch/m32r/include/asm/cmpxchg.h:59: more undefined references to `__xchg_called_with_bad_pointer' follow
   kernel/built-in.o: In function `__xchg':
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4dd54): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4e0e4): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4e11c): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4e1d0): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4e208): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `__xchg_called_with_bad_pointer'
   arch/m32r/include/asm/cmpxchg.h:59:(.text+0x4e470): additional relocation overflows omitted from the output

vim +59 arch/m32r/include/asm/cmpxchg.h

c9034c3a David Howells 2012-03-28  43  		break;
c9034c3a David Howells 2012-03-28  44  #else  /* CONFIG_SMP */
c9034c3a David Howells 2012-03-28  45  	case 4:
c9034c3a David Howells 2012-03-28  46  		__asm__ __volatile__ (
c9034c3a David Howells 2012-03-28  47  			DCACHE_CLEAR("%0", "r4", "%2")
c9034c3a David Howells 2012-03-28  48  			"lock	%0, @%2;	\n\t"
c9034c3a David Howells 2012-03-28  49  			"unlock	%1, @%2;	\n\t"
c9034c3a David Howells 2012-03-28  50  			: "=&r" (tmp) : "r" (x), "r" (ptr)
c9034c3a David Howells 2012-03-28  51  			: "memory"
c9034c3a David Howells 2012-03-28  52  #ifdef CONFIG_CHIP_M32700_TS1
c9034c3a David Howells 2012-03-28  53  			, "r4"
c9034c3a David Howells 2012-03-28  54  #endif	/* CONFIG_CHIP_M32700_TS1 */
c9034c3a David Howells 2012-03-28  55  		);
c9034c3a David Howells 2012-03-28  56  		break;
c9034c3a David Howells 2012-03-28  57  #endif  /* CONFIG_SMP */
c9034c3a David Howells 2012-03-28  58  	default:
c9034c3a David Howells 2012-03-28 @59  		__xchg_called_with_bad_pointer();
c9034c3a David Howells 2012-03-28  60  	}
c9034c3a David Howells 2012-03-28  61  
c9034c3a David Howells 2012-03-28  62  	local_irq_restore(flags);
c9034c3a David Howells 2012-03-28  63  
c9034c3a David Howells 2012-03-28  64  	return (tmp);
c9034c3a David Howells 2012-03-28  65  }
c9034c3a David Howells 2012-03-28  66  
c9034c3a David Howells 2012-03-28  67  #define xchg(ptr, x)							\

:::::: The code at line 59 was first introduced by commit
:::::: c9034c3a1d67486284b3b569595a4bd377aaf8cc Disintegrate asm/system.h for M32R

:::::: TO: David Howells <dhowells@...hat.com>
:::::: CC: David Howells <dhowells@...hat.com>

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