[arnd-playground:randconfig-7.3-next 245/673] arch/arc/kernel/setup.c:588:9: warning: format not a string literal and no format arguments

[arnd-playground:randconfig-7.3-next 245/673] arch/arc/kernel/setup.c:588:9: warning: format not a string literal and no format arguments

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git randconfig-7.3-next
head:   0a1affa74ef2f2c5c5ee74fc604e47a1aefdd286
commit: e05b65be2284afdfc5b431631b5b86878c530488 [245/673] treewide: address -Wformat-security warnings
config: arc-allnoconfig (https://download.01.org/0day-ci/archive/20260925/202609251833.SPhnmXte-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260925/202609251833.SPhnmXte-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609251833.SPhnmXte-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/arc/kernel/setup.c: In function 'show_cpuinfo':
>> arch/arc/kernel/setup.c:588:9: warning: format not a string literal and no format arguments [-Wformat-security]
     588 |         seq_printf(m, arc_cpu_mumbojumbo(cpu_id, &info, str, PAGE_SIZE));
         |         ^~~~~~~~~~
   arch/arc/kernel/setup.c:606:9: warning: format not a string literal and no format arguments [-Wformat-security]
     606 |         seq_printf(m, arc_platform_smp_cpuinfo());
         |         ^~~~~~~~~~


vim +588 arch/arc/kernel/setup.c

c121c5063c0674f Vineet Gupta   2013-01-18  569  
c121c5063c0674f Vineet Gupta   2013-01-18  570  static int show_cpuinfo(struct seq_file *m, void *v)
c121c5063c0674f Vineet Gupta   2013-01-18  571  {
c121c5063c0674f Vineet Gupta   2013-01-18  572  	char *str;
c121c5063c0674f Vineet Gupta   2013-01-18  573  	int cpu_id = ptr_to_cpu(v);
7f35144cea21910 Vlad Zakharov  2017-03-03  574  	struct device *cpu_dev = get_cpu_device(cpu_id);
fad84e39f116035 Vineet Gupta   2020-06-11  575  	struct cpuinfo_arc info;
7f35144cea21910 Vlad Zakharov  2017-03-03  576  	struct clk *cpu_clk;
7f35144cea21910 Vlad Zakharov  2017-03-03  577  	unsigned long freq = 0;
c121c5063c0674f Vineet Gupta   2013-01-18  578  
4c86231c14a8a1e Vineet Gupta   2014-12-12  579  	if (!cpu_online(cpu_id)) {
4c86231c14a8a1e Vineet Gupta   2014-12-12  580  		seq_printf(m, "processor [%d]\t: Offline\n", cpu_id);
4c86231c14a8a1e Vineet Gupta   2014-12-12  581  		goto done;
4c86231c14a8a1e Vineet Gupta   2014-12-12  582  	}
4c86231c14a8a1e Vineet Gupta   2014-12-12  583  
0ee931c4e31a5ef Michal Hocko   2017-09-13  584  	str = (char *)__get_free_page(GFP_KERNEL);
c121c5063c0674f Vineet Gupta   2013-01-18  585  	if (!str)
c121c5063c0674f Vineet Gupta   2013-01-18  586  		goto done;
c121c5063c0674f Vineet Gupta   2013-01-18  587  
fad84e39f116035 Vineet Gupta   2020-06-11 @588  	seq_printf(m, arc_cpu_mumbojumbo(cpu_id, &info, str, PAGE_SIZE));
c121c5063c0674f Vineet Gupta   2013-01-18  589  
7f35144cea21910 Vlad Zakharov  2017-03-03  590  	cpu_clk = clk_get(cpu_dev, NULL);
7f35144cea21910 Vlad Zakharov  2017-03-03  591  	if (IS_ERR(cpu_clk)) {
7f35144cea21910 Vlad Zakharov  2017-03-03  592  		seq_printf(m, "CPU speed \t: Cannot get clock for processor [%d]\n",
7f35144cea21910 Vlad Zakharov  2017-03-03  593  			   cpu_id);
7f35144cea21910 Vlad Zakharov  2017-03-03  594  	} else {
7f35144cea21910 Vlad Zakharov  2017-03-03  595  		freq = clk_get_rate(cpu_clk);
d12c6a6f0c8fd5b blaze          2026-09-09  596  		clk_put(cpu_clk);
7f35144cea21910 Vlad Zakharov  2017-03-03  597  	}
20c7dbbdbe12db7 Alexey Brodkin 2016-02-01  598  	if (freq)
7f35144cea21910 Vlad Zakharov  2017-03-03  599  		seq_printf(m, "CPU speed\t: %lu.%02lu Mhz\n",
20c7dbbdbe12db7 Alexey Brodkin 2016-02-01  600  			   freq / 1000000, (freq / 10000) % 100);
20c7dbbdbe12db7 Alexey Brodkin 2016-02-01  601  
56372082533afb8 Vineet Gupta   2014-09-25  602  	seq_printf(m, "Bogo MIPS\t: %lu.%02lu\n",
c121c5063c0674f Vineet Gupta   2013-01-18  603  		   loops_per_jiffy / (500000 / HZ),
c121c5063c0674f Vineet Gupta   2013-01-18  604  		   (loops_per_jiffy / (5000 / HZ)) % 100);
c121c5063c0674f Vineet Gupta   2013-01-18  605  
af61742813aa9dd Vineet Gupta   2013-01-18  606  	seq_printf(m, arc_platform_smp_cpuinfo());
af61742813aa9dd Vineet Gupta   2013-01-18  607  
c121c5063c0674f Vineet Gupta   2013-01-18  608  	free_page((unsigned long)str);
c121c5063c0674f Vineet Gupta   2013-01-18  609  done:
4c86231c14a8a1e Vineet Gupta   2014-12-12  610  	seq_printf(m, "\n");
c121c5063c0674f Vineet Gupta   2013-01-18  611  
c121c5063c0674f Vineet Gupta   2013-01-18  612  	return 0;
c121c5063c0674f Vineet Gupta   2013-01-18  613  }
c121c5063c0674f Vineet Gupta   2013-01-18  614  

:::::: The code at line 588 was first introduced by commit
:::::: fad84e39f116035ae8d550c6020107b8ac113b45 ARC: boot log: eliminate struct cpuinfo_arc #4: boot log per ISA

:::::: TO: Vineet Gupta <vgupta@kernel.org>
:::::: CC: Vineet Gupta <vgupta@kernel.org>

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https://github.com/intel/lkp-tests/wiki