linux-kernel - [peterz-queue:x86/wip.extable 21/23] arch/x86/include/asm/word-at-a-time.h:98:15: error: '__cold_

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Message-ID: <202111100546.qMMclefA-lkp@intel.com>
Date:   Wed, 10 Nov 2021 05:47:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [peterz-queue:x86/wip.extable 21/23]
 arch/x86/include/asm/word-at-a-time.h:98:15: error: '__cold__' attribute
 only applies to functions

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/wip.extable
head:   3083969163ff9cd715077a33b045e439b92b70bf
commit: 6dbe299818d0da139c576c414c09bbf133c8a331 [21/23] x86,word-at-a-time: Remove .fixup usage
config: i386-buildonly-randconfig-r002-20211109 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project f3798ad5fa845771846599f3c088016e3aef800c)
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/peterz/queue.git/commit/?id=6dbe299818d0da139c576c414c09bbf133c8a331
        git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
        git fetch --no-tags peterz-queue x86/wip.extable
        git checkout 6dbe299818d0da139c576c414c09bbf133c8a331
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386 

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 lib/strnlen_user.c:8:
>> arch/x86/include/asm/word-at-a-time.h:98:15: error: '__cold__' attribute only applies to functions [-Werror,-Wignored-attributes]
   do_exception: __cold;
                 ^
   include/linux/compiler_attributes.h:72:56: note: expanded from macro '__cold'
   #define __cold                          __attribute__((__cold__))
                                                          ^
   1 error generated.


vim +/__cold__ +98 arch/x86/include/asm/word-at-a-time.h

    81	
    82	static inline unsigned long load_unaligned_zeropad(const void *addr)
    83	{
    84		unsigned long offset, data;
    85		unsigned long ret;
    86	
    87		asm_volatile_goto(
    88			"1:	mov %[mem], %[ret]\n"
    89	
    90			_ASM_EXTABLE(1b, %l[do_exception])
    91	
    92			: [ret] "=r" (ret)
    93			: [mem] "m" (*(unsigned long *)addr)
    94			: : do_exception);
    95	
    96		return ret;
    97	
  > 98	do_exception: __cold;
    99		offset = (unsigned long)addr & (sizeof(long) - 1);
   100		addr = (void *)((unsigned long)addr & ~(sizeof(long) - 1));
   101		data = *(unsigned long *)addr;
   102		ret = data >> offset * 8;
   103	
   104		return ret;
   105	}
   106	

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

Download attachment ".config.gz" of type "application/gzip" (39244 bytes)