linux-kernel - Re: Re: [PATCH] panic: release stale console lock to always get the logbuf printed out

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Message-ID: <201510121132.JPqXilYL%fengguang.wu@intel.com>
Date:	Mon, 12 Oct 2015 11:02:32 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Jan Kara <jack@...e.cz>
Cc:	kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
	Vitaly Kuznetsov <vkuznets@...hat.com>,
	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Jiri Kosina <jkosina@...e.cz>, Baoquan He <bhe@...hat.com>,
	Prarit Bhargava <prarit@...hat.com>,
	Xie XiuQi <xiexiuqi@...wei.com>,
	Seth Jennings <sjenning@...hat.com>,
	linux-kernel@...r.kernel.org,
	"K. Y. Srinivasan" <kys@...rosoft.com>, Jan Kara <jack@...e.cz>
Subject: Re: Re: [PATCH] panic: release stale console lock to always get the
 logbuf printed out

Hi Jan,

[auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]

config: arm64-allnoconfig (attached as .config)
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
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   kernel/printk/printk.c: In function 'printk_log_buf_drain':
>> kernel/printk/printk.c:2410:3: error: implicit declaration of function 'zap_locks' [-Werror=implicit-function-declaration]
      zap_locks();
      ^
   cc1: some warnings being treated as errors

vim +/zap_locks +2410 kernel/printk/printk.c

  2404	void printk_log_buf_drain(bool panic)
  2405	{
  2406		bool retry;
  2407		unsigned long flags;
  2408	
  2409		if (panic)
> 2410			zap_locks();
  2411	
  2412		while (1) {
  2413			raw_spin_lock_irqsave(&logbuf_lock, flags);

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

Download attachment ".config.gz" of type "application/octet-stream" (5474 bytes)