linux-kernel - fs/xfs/xfs_ondisk.h:93:2: error: call to '__compiletime_assert_93' declared with attribute error: XFS: offsetof(xfs_attr_shortform

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Message-ID: <201607311634.fv7gSIKN%fengguang.wu@intel.com>
Date:	Sun, 31 Jul 2016 16:56:36 +0800
From:	kbuild test robot <fengguang.wu@...el.com>
To:	unlisted-recipients:; (no To-header on input)
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	Dave Chinner <david@...morbit.com>,
	"Darrick J. Wong" <darrick.wong@...cle.com>,
	Christoph Hellwig <hch@....de>
Subject: fs/xfs/xfs_ondisk.h:93:2: error: call to '__compiletime_assert_93'
 declared with attribute error: XFS: offsetof(xfs_attr_shortform_t,
 list[0].namelen) is wrong, expected 4

Hi,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7f155c702677d057d03b192ce652311de5434697
commit: 3f94c441e2c3dea029a46a2326b2170acf2c7713 xfs: check offsets of variable length structures
date:   6 weeks ago
config: cris-allmodconfig (attached as .config)
compiler: cris-linux-gcc (GCC) 4.6.3
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 3f94c441e2c3dea029a46a2326b2170acf2c7713
        # save the attached .config to linux build tree
        make.cross ARCH=cris 

All errors (new ones prefixed by >>):

   In file included from fs/xfs/xfs_super.c:48:0:
   In function 'xfs_check_ondisk_structs',
       inlined from 'init_xfs_fs' at fs/xfs/xfs_super.c:1855:26:
>> fs/xfs/xfs_ondisk.h:93:2: error: call to '__compiletime_assert_93' declared with attribute error: XFS: offsetof(xfs_attr_shortform_t, list[0].namelen) is wrong, expected 4
>> fs/xfs/xfs_ondisk.h:94:2: error: call to '__compiletime_assert_94' declared with attribute error: XFS: offsetof(xfs_attr_shortform_t, list[0].valuelen) is wrong, expected 5
>> fs/xfs/xfs_ondisk.h:95:2: error: call to '__compiletime_assert_95' declared with attribute error: XFS: offsetof(xfs_attr_shortform_t, list[0].flags) is wrong, expected 6
>> fs/xfs/xfs_ondisk.h:96:2: error: call to '__compiletime_assert_96' declared with attribute error: XFS: offsetof(xfs_attr_shortform_t, list[0].nameval) is wrong, expected 7

vim +/__compiletime_assert_93 +93 fs/xfs/xfs_ondisk.h

    87		XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, valuelen,	4);
    88		XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, namelen,	8);
    89		XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, name,	9);
    90		XFS_CHECK_STRUCT_SIZE(xfs_attr_leafblock_t,		40);
    91		XFS_CHECK_OFFSET(xfs_attr_shortform_t, hdr.totsize,	0);
    92		XFS_CHECK_OFFSET(xfs_attr_shortform_t, hdr.count,	2);
  > 93		XFS_CHECK_OFFSET(xfs_attr_shortform_t, list[0].namelen,	4);
  > 94		XFS_CHECK_OFFSET(xfs_attr_shortform_t, list[0].valuelen, 5);
  > 95		XFS_CHECK_OFFSET(xfs_attr_shortform_t, list[0].flags,	6);
  > 96		XFS_CHECK_OFFSET(xfs_attr_shortform_t, list[0].nameval,	7);
    97		XFS_CHECK_STRUCT_SIZE(xfs_da_blkinfo_t,			12);
    98		XFS_CHECK_STRUCT_SIZE(xfs_da_intnode_t,			16);
    99		XFS_CHECK_STRUCT_SIZE(xfs_da_node_entry_t,		8);

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