linux-kernel - lib/test_scanf.c:531:1: warning: the frame size of 2080 bytes is larger than 2048 bytes

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Date:   Tue, 13 Jul 2021 16:21:09 +0800
From:   kernel test robot <lkp@...el.com>
To:     Richard Fitzgerald <rf@...nsource.cirrus.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Petr Mladek <pmladek@...e.com>
Subject: lib/test_scanf.c:531:1: warning: the frame size of 2080 bytes is
 larger than 2048 bytes

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7fef2edf7cc753b51f7ccc74993971b0a9c81eca
commit: 50f530e176eac808e64416732e54c0686ce2c39b lib: test_scanf: Add tests for sscanf number conversion
date:   8 weeks ago
config: arm-randconfig-r001-20210713 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=50f530e176eac808e64416732e54c0686ce2c39b
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 50f530e176eac808e64416732e54c0686ce2c39b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   lib/test_scanf.c: In function 'numbers_list_field_width_val_width':
>> lib/test_scanf.c:531:1: warning: the frame size of 2080 bytes is larger than 2048 bytes [-Wframe-larger-than=]
     531 | }
         | ^
   lib/test_scanf.c: In function 'numbers_list_field_width_typemax':
   lib/test_scanf.c:489:1: warning: the frame size of 2552 bytes is larger than 2048 bytes [-Wframe-larger-than=]
     489 | }
         | ^
   lib/test_scanf.c: In function 'numbers_list':
   lib/test_scanf.c:438:1: warning: the frame size of 2080 bytes is larger than 2048 bytes [-Wframe-larger-than=]
     438 | }
         | ^


vim +531 lib/test_scanf.c

   490	
   491	/*
   492	 * List of numbers separated by delim. Each field width specifier is the
   493	 * exact length of the corresponding value digits in the string being scanned.
   494	 */
   495	static void __init numbers_list_field_width_val_width(const char *delim)
   496	{
   497		numbers_list_val_width(unsigned long long, "%llu",   delim, "llu", check_ull);
   498		numbers_list_val_width(long long,	   "%lld",   delim, "lld", check_ll);
   499		numbers_list_val_width(long long,	   "%lld",   delim, "lli", check_ll);
   500		numbers_list_val_width(unsigned long long, "%llx",   delim, "llx", check_ull);
   501		numbers_list_val_width(unsigned long long, "0x%llx", delim, "llx", check_ull);
   502		numbers_list_val_width(long long,	   "0x%llx", delim, "lli", check_ll);
   503	
   504		numbers_list_val_width(unsigned long,	"%lu",	     delim, "lu", check_ulong);
   505		numbers_list_val_width(long,		"%ld",	     delim, "ld", check_long);
   506		numbers_list_val_width(long,		"%ld",	     delim, "li", check_long);
   507		numbers_list_val_width(unsigned long,	"%lx",	     delim, "lx", check_ulong);
   508		numbers_list_val_width(unsigned long,	"0x%lx",     delim, "lx", check_ulong);
   509		numbers_list_val_width(long,		"0x%lx",     delim, "li", check_long);
   510	
   511		numbers_list_val_width(unsigned int,	"%u",	     delim, "u", check_uint);
   512		numbers_list_val_width(int,		"%d",	     delim, "d", check_int);
   513		numbers_list_val_width(int,		"%d",	     delim, "i", check_int);
   514		numbers_list_val_width(unsigned int,	"%x",	     delim, "x", check_uint);
   515		numbers_list_val_width(unsigned int,	"0x%x",	     delim, "x", check_uint);
   516		numbers_list_val_width(int,		"0x%x",	     delim, "i", check_int);
   517	
   518		numbers_list_val_width(unsigned short,	"%hu",	     delim, "hu", check_ushort);
   519		numbers_list_val_width(short,		"%hd",	     delim, "hd", check_short);
   520		numbers_list_val_width(short,		"%hd",	     delim, "hi", check_short);
   521		numbers_list_val_width(unsigned short,	"%hx",	     delim, "hx", check_ushort);
   522		numbers_list_val_width(unsigned short,	"0x%hx",     delim, "hx", check_ushort);
   523		numbers_list_val_width(short,		"0x%hx",     delim, "hi", check_short);
   524	
   525		numbers_list_val_width(unsigned char,	"%hhu",	     delim, "hhu", check_uchar);
   526		numbers_list_val_width(signed char,	"%hhd",	     delim, "hhd", check_char);
   527		numbers_list_val_width(signed char,	"%hhd",	     delim, "hhi", check_char);
   528		numbers_list_val_width(unsigned char,	"%hhx",	     delim, "hhx", check_uchar);
   529		numbers_list_val_width(unsigned char,	"0x%hhx",    delim, "hhx", check_uchar);
   530		numbers_list_val_width(signed char,	"0x%hhx",    delim, "hhi", check_char);
 > 531	}
   532	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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