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Date:   Wed, 8 Nov 2017 15:43:47 -0800
From:   Kees Cook <keescook@...gle.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     "Darrick J. Wong" <darrick.wong@...cle.com>,
        David Chinner <david@...morbit.com>, linux-xfs@...r.kernel.org,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Windsor <dave@...lcore.net>,
        Christoph Hellwig <hch@....de>
Subject: Re: linux-next: build failure after merge of the kspp tree

On Tue, Nov 7, 2017 at 9:23 PM, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> Hi Kees,
>
> After merging the kspp tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> In file included from include/linux/compiler_types.h:58:0,
>                  from include/uapi/linux/stddef.h:2,
>                  from include/linux/stddef.h:5,
>                  from include/uapi/linux/posix_types.h:5,
>                  from include/uapi/linux/types.h:14,
>                  from include/linux/types.h:6,
>                  from fs/xfs/xfs_linux.h:21,
>                  from fs/xfs/xfs.h:35,
>                  from fs/xfs/xfs_super.c:19:
> fs/xfs/xfs_super.c: In function 'xfs_init_zones':
> include/linux/compiler-gcc.h:166:2: error: 'xfs_ifork_t {aka struct xfs_ifork}' has no member named 'if_u2'
>   __builtin_offsetof(a, b)
>   ^
> include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof'
>  #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
>                                 ^
> fs/xfs/xfs_super.c:1862:4: note: in expansion of macro 'offsetof'
>     offsetof(xfs_inode_t, i_df.if_u2.if_inline_data),
>     ^
> In file included from include/uapi/linux/posix_types.h:5:0,
>                  from include/uapi/linux/types.h:14,
>                  from include/linux/types.h:6,
>                  from fs/xfs/xfs_linux.h:21,
>                  from fs/xfs/xfs.h:35,
>                  from fs/xfs/xfs_super.c:19:
> fs/xfs/xfs_super.c:1863:34: error: 'xfs_ifork_t {aka struct xfs_ifork}' has no member named 'if_u2'
>     sizeof_field(xfs_inode_t, i_df.if_u2.if_inline_data),
>                                   ^
> include/linux/stddef.h:22:66: note: in definition of macro 'sizeof_field'
>  #define sizeof_field(structure, field) sizeof((((structure *)0)->field))
>                                                                   ^
>
> Caused by commit
>
>   1d48144b9688 ("xfs: Define usercopy region in xfs_inode slab cache")
>
> interacting with commit
>
>   43518812d297 ("xfs: remove support for inlining data/extents into the inode fork")
>
> from the  tree.
>
> I just reverted the kspp tree commit as it seems like it is no longer
> needed.

Yup, that looks like the correct fix. Thanks!

-Kees

-- 
Kees Cook
Pixel Security

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