linux-kernel - Re: [PATCH] kasan: Respect /proc/sys/kernel/traceoff_on

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Message-ID: <201701252339.kQ84CDiQ%fengguang.wu@intel.com>
Date:   Wed, 25 Jan 2017 23:29:28 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...org, Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] kasan: Respect /proc/sys/kernel/traceoff_on_warning

Hi Peter,

[auto build test ERROR on mmotm/master]
[also build test ERROR on v4.10-rc5 next-20170125]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Peter-Zijlstra/kasan-Respect-proc-sys-kernel-traceoff_on_warning/20170125-230535
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: x86_64-randconfig-x008-201704 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   mm/kasan/report.c: In function 'kasan_report':
>> mm/kasan/report.c:303:2: error: implicit declaration of function 'disable_trace_on_warning' [-Werror=implicit-function-declaration]
     disable_trace_on_warning();
     ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/disable_trace_on_warning +303 mm/kasan/report.c

   297	{
   298		struct kasan_access_info info;
   299	
   300		if (likely(!kasan_report_enabled()))
   301			return;
   302	
 > 303		disable_trace_on_warning();
   304	
   305		info.access_addr = (void *)addr;
   306		info.access_size = size;

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0-DAY kernel test infrastructure                Open Source Technology Center
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