[xilinx-xlnx:master 1000/1123] drivers/gpu/drm/xlnx/hdcp/xlnx_hdcp2x_crypt.c:147:1: warning: the frame size of 1536 bytes is larger than 1024 bytes

[xilinx-xlnx:master 1000/1123] drivers/gpu/drm/xlnx/hdcp/xlnx_hdcp2x_crypt.c:147:1: warning: the frame size of 1536 bytes is larger than 1024 bytes

[kernel test robot]

tree:   https://github.com/Xilinx/linux-xlnx master
head:   cb1f2dbc7e487361688257fccf78bf3f3ce0e9ed
commit: f5e31866859a5b682c6668e40f17b5f760dca9c1 [1000/1123] drm: xlnx: Add HDCP2X TX support
config: nios2-allmodconfig (https://download.01.org/0day-ci/archive/20231020/202310200100.hbreEaMs-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231020/202310200100.hbreEaMs-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/202310200100.hbreEaMs-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/xlnx/hdcp/xlnx_hdcp2x_crypt.c: In function 'xlnx_hdcp2x_tx_rsa_encrypt':
>> drivers/gpu/drm/xlnx/hdcp/xlnx_hdcp2x_crypt.c:147:1: warning: the frame size of 1536 bytes is larger than 1024 bytes [-Wframe-larger-than=]
     147 | }
         | ^


vim +147 drivers/gpu/drm/xlnx/hdcp/xlnx_hdcp2x_crypt.c

   127	
   128	static int xlnx_hdcp2x_tx_rsa_encrypt(const u8 *rsa_public_key, int public_key_size,
   129					      const u8 *exponent_key, int exponent_key_size,
   130					      const u8 *msg, int msg_size, u8 *encrypted_msg)
   131	{
   132		unsigned int n[BD_MAX_MOD_SIZE], e[BD_MAX_MOD_SIZE],
   133				m[BD_MAX_MOD_SIZE], s[BD_MAX_MOD_SIZE];
   134		unsigned int mod_size = public_key_size / sizeof(unsigned int);
   135	
   136		if (msg_size != public_key_size)
   137			return -EINVAL;
   138	
   139		mp_conv_from_octets(n, mod_size, rsa_public_key, public_key_size);
   140		mp_conv_from_octets(e, mod_size, exponent_key, exponent_key_size);
   141	
   142		mp_conv_from_octets(m, mod_size, msg, msg_size);
   143		mp_mod_exp(s, m, e, n, mod_size);
   144		mp_conv_to_octets(s, mod_size, encrypted_msg, msg_size);
   145	
   146		return 0;
 > 147	}
   148	

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