Re: [PATCH 0001/0001] format idle IP output func+offset/length

From: kbuild test robot <lkp@intel.com>
To: "Liu, Changcheng" <changcheng.liu@intel.com>
Cc: kbuild-all@01.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	jpoimboe@redhat.com, Petr Mladek <pmladek@suse.com>,
	changcheng.liu@intel.com,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0001/0001] format idle IP output func+offset/length
Date: Thu, 9 Nov 2017 11:21:21 +0800	[thread overview]
Message-ID: <201711091123.FJ680fJO%fengguang.wu@intel.com> (raw)
In-Reply-To: <20171106052511.GB69364@sofia>

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Hi Changcheng,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.14-rc8]
[cannot apply to next-20171108]
[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/Liu-Changcheng/format-idle-IP-output-func-offset-length/20171109-100035
config: i386-randconfig-n0-11080844 (attached as .config)
compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   lib/nmi_backtrace.c: In function 'nmi_cpu_backtrace':
>> lib/nmi_backtrace.c:96:4: warning: format '%p' expects argument of type 'void *', but argument 3 has type 'long unsigned int' [-Wformat=]
       pr_warn("NMI backtrace for cpu %d skipped: idling at pc %pS\n",
       ^

vim +96 lib/nmi_backtrace.c

    87	
    88	bool nmi_cpu_backtrace(struct pt_regs *regs)
    89	{
    90		static arch_spinlock_t lock = __ARCH_SPIN_LOCK_UNLOCKED;
    91		int cpu = smp_processor_id();
    92	
    93		if (cpumask_test_cpu(cpu, to_cpumask(backtrace_mask))) {
    94			arch_spin_lock(&lock);
    95			if (regs && cpu_in_idle(instruction_pointer(regs))) {
  > 96				pr_warn("NMI backtrace for cpu %d skipped: idling at pc %pS\n",

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