linux-kernel - linux-next: build failure after merge of the mm tree

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Message-ID: <20230718094004.3dd0dc52@canb.auug.org.au>
Date:   Tue, 18 Jul 2023 09:40:04 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     "Liam R. Howlett" <Liam.Howlett@...cle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the mm tree

Hi all,

After merging the mm tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

In file included from include/uapi/linux/posix_types.h:5,
                 from include/uapi/linux/types.h:14,
                 from include/linux/types.h:6,
                 from include/linux/limits.h:6,
                 from include/linux/kernel.h:16,
                 from mm/mmap.c:12:
mm/mmap.c: In function 'do_vmi_align_munmap':
include/linux/stddef.h:8:14: error: incompatible types when assigning to type 'lockdep_map_p' from type 'void *'
    8 | #define NULL ((void *)0)
      |              ^
mm/mmap.c:2430:38: note: in expansion of macro 'NULL'
 2430 |         mt_detach.ma_external_lock = NULL;
      |                                      ^~~~

Caused by commit

  f40b24c7c416 ("mm/mmap: change detached vma locking scheme")

CONFIG_LOCKDEP is not set for this build.

I have reverted that commit for today.

-- 
Cheers,
Stephen Rothwell

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