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From: Stephen Rothwell <sfr@canb.auug.org.au>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
	Christoph Hellwig <hch@infradead.org>
Subject: linux-next: build failure after merge of the rcu tree
Date: Mon, 2 May 2016 14:37:36 +1000	[thread overview]
Message-ID: <20160502143736.631f2a44@canb.auug.org.au> (raw)

Hi Paul,

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

arch/x86/kvm/vmx.c: In function 'vmx_init':
arch/x86/kvm/vmx.c:11026:2: error: function '_r_a_p__v' is initialized like a variable
  rcu_assign_pointer(crash_vmclear_loaded_vmcss,
  ^
In file included from include/linux/rbtree.h:34:0,
                 from include/linux/mm_types.h:9,
                 from arch/x86/kvm/irq.h:25,
                 from arch/x86/kvm/vmx.c:19:
include/linux/rcupdate.h:657:45: warning: the comparison will always evaluate as 'false' for the address of '_r_a_p__v' will never be NULL [-Waddress]
  if (__builtin_constant_p(v) && (_r_a_p__v) == NULL) \
                                             ^
arch/x86/kvm/vmx.c:11026:2: note: in expansion of macro 'rcu_assign_pointer'
  rcu_assign_pointer(crash_vmclear_loaded_vmcss,
  ^
include/linux/rcupdate.h:655:12: error: nested function '_r_a_p__v' declared but never defined  
  typeof(v) _r_a_p__v = (v); \
            ^
arch/x86/kvm/vmx.c:11026:2: note: in expansion of macro 'rcu_assign_pointer'
  rcu_assign_pointer(crash_vmclear_loaded_vmcss,
  ^

Caused by commit

  16d7afcaa530 ("rcu: No ordering for rcu_assign_pointer() of NULL")

I have reverted that commit for today.

-- 
Cheers,
Stephen Rothwell

             reply	other threads:[~2016-05-02  4:37 UTC|newest]

Thread overview: 152+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-02  4:37 Stephen Rothwell [this message]
2016-05-02 11:06 ` linux-next: build failure after merge of the rcu tree Paul E. McKenney
  -- strict thread matches above, loose matches on Subject: below --
2024-01-24  4:17 Stephen Rothwell
2024-01-24  9:49 ` Jiri Wiesner
2024-01-24 12:12   ` Paul E. McKenney
2024-01-24 13:31     ` Jiri Wiesner
2024-01-24 14:20       ` Paul E. McKenney
2023-07-27  4:19 Stephen Rothwell
2023-07-27 14:08 ` Paul E. McKenney
2023-05-19  0:59 Stephen Rothwell
2023-05-19  2:12 ` Paul E. McKenney
2023-05-22  1:45   ` Stephen Rothwell
2023-05-22 14:57     ` Paul E. McKenney
2023-03-14  1:29 Stephen Rothwell
2023-03-14  4:43 ` Paul E. McKenney
2022-10-17 23:26 Stephen Rothwell
2022-10-18 10:43 ` Frederic Weisbecker
2022-10-18 14:57   ` Paul E. McKenney
2022-04-19  2:36 Stephen Rothwell
2022-04-19  3:31 ` Paul E. McKenney
2021-05-03  0:11 Stephen Rothwell
2021-05-03 16:25 ` Paul E. McKenney
2021-04-22  4:10 Stephen Rothwell
2021-04-22 16:36 ` Paul E. McKenney
2021-03-17  5:36 Stephen Rothwell
2021-03-17 14:23 ` Paul E. McKenney
2021-01-04  0:37 Stephen Rothwell
2021-01-04 12:56 ` Frederic Weisbecker
2020-12-04  8:25 Stephen Rothwell
2020-12-04 19:20 ` Paul E. McKenney
2020-12-06 21:39   ` Stephen Rothwell
2020-12-07  4:48     ` Paul E. McKenney
2020-12-07  8:59       ` Stephen Rothwell
2020-09-17  5:19 Stephen Rothwell
2020-09-17 22:01 ` Paul E. McKenney
2020-09-18  0:00   ` Stephen Rothwell
2020-09-08  5:38 Stephen Rothwell
2020-09-08 13:54 ` Paul E. McKenney
2020-08-18  1:43 Stephen Rothwell
2020-08-18 14:08 ` Paul E. McKenney
2020-06-25  2:57 Stephen Rothwell
2020-06-25  3:45 ` Paul E. McKenney
2020-05-28  9:05 Stephen Rothwell
2020-05-28 16:33 ` Paul E. McKenney
2020-05-28 21:03   ` Paul E. McKenney
2020-04-05  1:49 Stephen Rothwell
2020-04-05  3:10 ` Paul E. McKenney
2020-01-17  3:07 Stephen Rothwell
2019-12-12  2:45 Stephen Rothwell
2019-12-12  4:07 ` Paul E. McKenney
2019-12-12  4:26   ` Stephen Rothwell
2019-12-12  4:41     ` Paul E. McKenney
2020-01-17  3:09 ` Stephen Rothwell
2019-08-13  7:57 Stephen Rothwell
2019-08-13 15:31 ` Paul E. McKenney
2019-08-12  6:12 Stephen Rothwell
2019-08-12 16:19 ` Paul E. McKenney
2019-08-13  5:25   ` Stephen Rothwell
2019-08-13 14:38     ` Paul E. McKenney
2017-09-04  4:50 Stephen Rothwell
2017-09-04 16:39 ` Paul E. McKenney
2017-08-28  4:25 Stephen Rothwell
2017-08-28 17:50 ` Paul E. McKenney
2017-08-11  4:43 Stephen Rothwell
2017-08-11  4:54 ` Paul E. McKenney
2017-08-11  9:14   ` Peter Zijlstra
2017-08-11 14:39     ` Paul E. McKenney
2017-08-11 14:45       ` Peter Zijlstra
2017-08-11 14:41     ` Peter Zijlstra
2017-08-11 20:12       ` Paul E. McKenney
2017-05-29  6:02 Stephen Rothwell
2017-05-29 21:15 ` Paul E. McKenney
2017-05-30  1:40   ` Stephen Rothwell
2017-05-30  1:54     ` Joe Perches
2017-05-30  2:14       ` Paul E. McKenney
2017-05-30  2:20         ` Joe Perches
2017-05-30  3:13           ` Stephen Rothwell
2017-05-30  4:10   ` Michael Ellerman
2017-06-02 17:51     ` Paul E. McKenney
2017-04-20  5:36 Stephen Rothwell
2017-04-20 14:23 ` Paul E. McKenney
2017-04-19  3:50 Stephen Rothwell
2017-04-19  4:06 ` Paul E. McKenney
2017-04-19  5:45   ` Stephen Rothwell
2017-03-08  1:16 Stephen Rothwell
2017-03-08 10:13 ` Daniel Vetter
2017-03-08 17:40   ` Paul E. McKenney
2017-01-19  3:34 Stephen Rothwell
2017-01-19 21:54 ` Paul McKenney
2017-02-13  2:21   ` Stephen Rothwell
2017-02-13  4:37     ` Paul E. McKenney
2017-02-13  6:43       ` Stephen Rothwell
2017-03-08  1:16         ` Stephen Rothwell
2017-03-08  1:37           ` Paul E. McKenney
2017-03-08 18:05           ` Paul E. McKenney
2016-02-01  2:55 Stephen Rothwell
2016-02-01  9:53 ` Paul E. McKenney
2016-01-07  8:57 Stephen Rothwell
2016-01-07 18:02 ` Paul E. McKenney
2016-01-07 20:19   ` Stephen Rothwell
2016-01-07 20:52     ` Paul E. McKenney
2016-01-08  1:37       ` Boqun Feng
2016-01-08  3:41         ` Paul E. McKenney
2016-01-08  4:08           ` Stephen Rothwell
2016-01-08  4:48             ` Paul E. McKenney
2016-01-08  4:54               ` Boqun Feng
2016-01-08 15:53                 ` Paul E. McKenney
2016-01-08 15:57                   ` Tejun Heo
2016-01-08 16:18                     ` Paul E. McKenney
2016-01-08 15:58                   ` Boqun Feng
2016-01-08  4:10         ` Stephen Rothwell
2015-09-01  3:50 Stephen Rothwell
2015-09-01  7:49 ` Paul E. McKenney
2015-09-02  3:58   ` Stephen Rothwell
2015-09-02  5:26     ` Paul E. McKenney
2015-09-02  6:40       ` Davidlohr Bueso
2015-09-02  7:14         ` Paul E. McKenney
2015-09-02  7:29           ` Ingo Molnar
2015-09-02  8:34             ` Paul E. McKenney
2015-07-16  3:14 Stephen Rothwell
2015-07-16  3:51 ` Paul E. McKenney
2015-07-16  5:50   ` Stephen Rothwell
2015-07-17 11:40   ` Ingo Molnar
2015-07-17 17:35     ` Paul E. McKenney
2015-07-17 18:53       ` Paul E. McKenney
2015-07-17 19:51         ` Ingo Molnar
2015-07-17 21:33           ` Paul E. McKenney
2015-07-18  2:40             ` Ingo Molnar
2015-04-13 10:39 Stephen Rothwell
2015-04-13 11:06 ` Borislav Petkov
2015-04-13 11:34   ` Ingo Molnar
2015-04-13 12:40     ` Paul E. McKenney
2015-02-27  2:18 Stephen Rothwell
2015-02-27  5:59 ` Paul E. McKenney
2014-12-26  7:51 Stephen Rothwell
2014-12-26 16:54 ` Paul E. McKenney
2014-12-27 16:24   ` Pranith Kumar
2014-12-27 17:20     ` Pranith Kumar
2014-12-31  1:45       ` Paul E. McKenney
2014-12-12  6:12 Stephen Rothwell
2014-12-12 17:23 ` Paul E. McKenney
2014-12-10  8:09 Stephen Rothwell
2014-12-10 15:03 ` Pranith Kumar
2014-12-10 15:18   ` Paul E. McKenney
2014-12-09 11:42 Stephen Rothwell
2014-12-09 14:07 ` Paul E. McKenney
2012-04-16  4:11 Stephen Rothwell
2012-04-16 17:02 ` Paul E. McKenney
2010-09-17  2:42 Stephen Rothwell
2010-09-17  4:39 ` David Miller
2010-09-17  5:34   ` Eric Dumazet
2010-09-17 23:17 ` Paul E. McKenney

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