linux-kernel - Re: [PATCH v4 5/5] printk/nmi: flush NMI messages on the system panic

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Date:	Thu, 31 Mar 2016 00:33:54 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Petr Mladek <pmladek@...e.com>
Cc:	kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Daniel Thompson <daniel.thompson@...aro.org>,
	Jiri Kosina <jkosina@...e.com>, Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
	Chris Metcalf <cmetcalf@...hip.com>,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
	adi-buildroot-devel@...ts.sourceforge.net,
	linux-cris-kernel@...s.com, linux-mips@...ux-mips.org,
	linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
	linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
	Petr Mladek <pmladek@...e.com>
Subject: Re: [PATCH v4 5/5] printk/nmi: flush NMI messages on the system panic

Hi Petr,

[auto build test ERROR on v4.6-rc1]
[cannot apply to tip/x86/core next-20160330]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Petr-Mladek/Cleaning-printk-stuff-in-NMI-context/20160330-235818
config: i386-randconfig-s1-201613 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   kernel/printk/nmi.c: In function 'printk_nmi_flush_on_panic':
>> kernel/printk/nmi.c:218:4: error: implicit declaration of function 'debug_locks_off' [-Werror=implicit-function-declaration]
       debug_locks_off();
       ^
   cc1: some warnings being treated as errors

vim +/debug_locks_off +218 kernel/printk/nmi.c

   212			 * Do not risk a double release when more CPUs are up.
   213			 */
   214			if (raw_spin_is_locked(&logbuf_lock)) {
   215				if (num_online_cpus() > 1)
   216					return;
   217	
 > 218				debug_locks_off();
   219				raw_spin_lock_init(&logbuf_lock);
   220			}
   221	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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