linux-kernel - Re: [PATCH] crypto: Used macros from compiler.h instead of __attribute_

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Message-ID: <201612310818.PAvJPF1w%fengguang.wu@intel.com>
Date:   Sat, 31 Dec 2016 08:03:13 +0800
From:   kbuild test robot <lkp@...el.com>
To:     gidisrael@...il.com
Cc:     kbuild-all@...org, herbert@...dor.apana.org.au,
        davem@...emloft.net, nhorman@...driver.com,
        akpm@...ux-foundation.org, geert@...ux-m68k.org, joe@...ches.com,
        linux-kernel@...r.kernel.org,
        Gideon Israel Dsouza <gidisrael@...il.com>
Subject: Re: [PATCH] crypto: Used macros from compiler.h instead of
 __attribute__(...))

Hi =,

[auto build test ERROR on cryptodev/master]
[also build test ERROR on v4.10-rc1 next-20161224]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/gidisrael-gmail-com/crypto-Used-macros-from-compiler-h-instead-of-__attribute__/20161231-072412
base:   https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
config: tile-allmodconfig (attached as .config)
compiler: tilegx-linux-gcc (GCC) 4.6.2
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
        # save the attached .config to linux build tree
        make.cross ARCH=tile 

All errors (new ones prefixed by >>):

   crypto/shash.c: In function 'shash_update_unaligned':
>> crypto/shash.c:84:3: error: requested alignment is not a constant
   crypto/shash.c: In function 'shash_final_unaligned':
   crypto/shash.c:120:3: error: requested alignment is not a constant

vim +84 crypto/shash.c

    78		struct crypto_shash *tfm = desc->tfm;
    79		struct shash_alg *shash = crypto_shash_alg(tfm);
    80		unsigned long alignmask = crypto_shash_alignmask(tfm);
    81		unsigned int unaligned_len = alignmask + 1 -
    82					     ((unsigned long)data & alignmask);
    83		u8 ubuf[shash_align_buffer_size(unaligned_len, alignmask)]
  > 84			__aligned(aligned);
    85		u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1);
    86		int err;
    87	

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