linux-kernel - Re: [PATCH] panic: Clean up message about deprecated 'panic

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Message-ID: <202508200907.PsZ3geub-lkp@intel.com>
Date: Wed, 20 Aug 2025 09:31:05 +0800
From: kernel test robot <lkp@...el.com>
To: Petr Mladek <pmladek@...e.com>, Feng Tang <feng.tang@...ux.alibaba.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Lance Yang <lance.yang@...ux.dev>, Jonathan Corbet <corbet@....net>,
	linux-kernel@...r.kernel.org, paulmck@...nel.org,
	john.ogness@...utronix.de
Subject: Re: [PATCH] panic: Clean up message about deprecated 'panic_print'
 parameter

Hi Petr,

kernel test robot noticed the following build errors:



url:    https://github.com/intel-lab-lkp/linux/commits/UPDATE-20250819-180717/Feng-Tang/lib-sys_info-handle-sys_info_mask-0-case/20250815-152131
base:   the 3th patch of https://lore.kernel.org/r/20250815071428.98041-4-feng.tang%40linux.alibaba.com
patch link:    https://lore.kernel.org/r/aKRJKZHgcxyNF3y7%40pathway.suse.cz
patch subject: [PATCH] panic: Clean up message about deprecated 'panic_print' parameter
config: i386-buildonly-randconfig-004-20250820 (https://download.01.org/0day-ci/archive/20250820/202508200907.PsZ3geub-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250820/202508200907.PsZ3geub-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508200907.PsZ3geub-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/panic.c:952:2: error: call to undeclared function 'panic_print_deprecated'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     952 |         panic_print_deprecated();
         |         ^
   kernel/panic.c:958:2: error: call to undeclared function 'panic_print_deprecated'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     958 |         panic_print_deprecated();
         |         ^
   2 errors generated.


vim +/panic_print_deprecated +952 kernel/panic.c

   949	
   950	static int panic_print_set(const char *val, const struct kernel_param *kp)
   951	{
 > 952		panic_print_deprecated();
   953		return  param_set_ulong(val, kp);
   954	}
   955	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki