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Date:   Wed, 8 Nov 2017 16:18:35 -0800
From:   "Darrick J. Wong" <darrick.wong@...cle.com>
To:     Kees Cook <keescook@...gle.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        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 Wed, Nov 08, 2017 at 03:43:47PM -0800, Kees Cook wrote:
> 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!

Agreed.  I guess we'll see you for round X when you get to general
kmalloc annotating. :)

--D

> -Kees
> 
> -- 
> Kees Cook
> Pixel Security
> --
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