linux-kernel - include/linux/kprobes.h:361:2: error: invalid use of undefined type 'struct kprobe

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Message-ID: <201610020955.wRU3EblA%fengguang.wu@intel.com>
Date:   Sun, 2 Oct 2016 09:31:01 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Russell King <rmk+kernel@....linux.org.uk>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>
Subject: include/linux/kprobes.h:361:2: error: invalid use of undefined type
 'struct kprobe_ctlblk'

Hi Russell,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f51fdffad5b7709d0ade40736b58a2da2707fa15
commit: b2c0b2cbb282f0cf42518ffacbe197e6f2884168 nmi: create generic NMI backtrace implementation
date:   1 year, 3 months ago
config: mn10300-allyesconfig (attached as .config)
compiler: am33_2.0-linux-gcc (GCC) 6.2.0
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout b2c0b2cbb282f0cf42518ffacbe197e6f2884168
        # save the attached .config to linux build tree
        make.cross ARCH=mn10300 

All errors (new ones prefixed by >>):

   In file included from lib/nmi_backtrace.c:17:0:
   include/linux/kprobes.h: In function 'get_kprobe_ctlblk':
>> include/linux/kprobes.h:361:2: error: invalid use of undefined type 'struct kprobe_ctlblk'
     return this_cpu_ptr(&kprobe_ctlblk);
     ^~~~~~

vim +361 include/linux/kprobes.h

e65845235 Ananth N Mavinakayanahalli 2005-11-07  355  {
b76834bc1 Christoph Lameter          2010-12-06  356  	__this_cpu_write(current_kprobe, NULL);
e65845235 Ananth N Mavinakayanahalli 2005-11-07  357  }
e65845235 Ananth N Mavinakayanahalli 2005-11-07  358  
e65845235 Ananth N Mavinakayanahalli 2005-11-07  359  static inline struct kprobe_ctlblk *get_kprobe_ctlblk(void)
e65845235 Ananth N Mavinakayanahalli 2005-11-07  360  {
bdffd893a Christoph Lameter          2014-04-29 @361  	return this_cpu_ptr(&kprobe_ctlblk);
e65845235 Ananth N Mavinakayanahalli 2005-11-07  362  }
e65845235 Ananth N Mavinakayanahalli 2005-11-07  363  
^1da177e4 Linus Torvalds             2005-04-16  364  int register_kprobe(struct kprobe *p);

:::::: The code at line 361 was first introduced by commit
:::::: bdffd893a0e9c431304142d12d9a0a21d365c502 tracing: Replace __get_cpu_var uses with this_cpu_ptr

:::::: TO: Christoph Lameter <cl@...ux.com>
:::::: CC: Steven Rostedt <rostedt@...dmis.org>

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