linux-next: build failure after merge of the userns tree

From: Stephen Rothwell <sfr@canb.auug.org.au>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Next Mailing List <linux-next@vger.kernel.org>
Subject: linux-next: build failure after merge of the userns tree
Date: Thu, 7 Oct 2021 14:47:01 +1100	[thread overview]
Message-ID: <20211007144701.67592574@canb.auug.org.au> (raw)

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Hi all,

After merging the userns tree, today's linux-next build (x86_64
allmodconfig) failed like this:

In file included from include/linux/kernel.h:19,
                 from mm/debug.c:9:
mm/debug.c: In function 'dump_mm':
mm/debug.c:251:28: error: 'const struct mm_struct' has no member named 'core_state'
  251 |   mm->binfmt, mm->flags, mm->core_state,
      |                            ^~
include/linux/printk.h:418:19: note: in definition of macro 'printk_index_wrap'
  418 |   _p_func(_fmt, ##__VA_ARGS__);    \
      |                   ^~~~~~~~~~~
include/linux/printk.h:459:2: note: in expansion of macro 'printk'
  459 |  printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
      |  ^~~~~~
mm/debug.c:208:2: note: in expansion of macro 'pr_emerg'
  208 |  pr_emerg("mm %px mmap %px seqnum %llu task_size %lu\n"
      |  ^~~~~~~~

Caused by commit

  483f2bb374b7 ("coredump: Limit coredumps to a single thread group")

I have used the userns tree from next-20211006 for today.

-- 
Cheers,
Stephen Rothwell

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