tree:   https://github.com/HabanaAI/linux.git habanalabs-fixes
head:   3a5e2fb31a2173b4ac9452009019c4d999a84744
commit: 4fdf88733ace4960aeea805f4f3213891691d9f4 [11/13] habanalabs: validate FW file size
config: arc-randconfig-r026-20200811 (attached as .config)
compiler: arc-elf-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
        git checkout 4fdf88733ace4960aeea805f4f3213891691d9f4
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

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

All warnings (new ones prefixed by >>):

   In file included from include/linux/device.h:15,
                    from include/linux/cdev.h:8,
                    from drivers/misc/habanalabs/common/habanalabs.h:15,
                    from drivers/misc/habanalabs/common/firmware_if.c:8:
   drivers/misc/habanalabs/common/firmware_if.c: In function 'hl_fw_load_fw_to_device':
>> drivers/misc/habanalabs/common/firmware_if.c:54:4: warning: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
      54 |    "FW file size %lu exceeds maximum of %u bytes\n",
         |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:19:22: note: in definition of macro 'dev_fmt'
      19 | #define dev_fmt(fmt) fmt
         |                      ^~~
   drivers/misc/habanalabs/common/firmware_if.c:53:3: note: in expansion of macro 'dev_err'
      53 |   dev_err(hdev->dev,
         |   ^~~~~~~
   drivers/misc/habanalabs/common/firmware_if.c:54:20: note: format string is defined here
      54 |    "FW file size %lu exceeds maximum of %u bytes\n",
         |                  ~~^
         |                    |
         |                    long unsigned int
         |                  %u

vim +54 drivers/misc/habanalabs/common/firmware_if.c

    15	
    16	#define FW_FILE_MAX_SIZE	0x1400000 /* maximum size of 20MB */
    17	/**
    18	 * hl_fw_load_fw_to_device() - Load F/W code to device's memory.
    19	 *
    20	 * @hdev: pointer to hl_device structure.
    21	 * @fw_name: the firmware image name
    22	 * @dst: IO memory mapped address space to copy firmware to
    23	 *
    24	 * Copy fw code from firmware file to device memory.
    25	 *
    26	 * Return: 0 on success, non-zero for failure.
    27	 */
    28	int hl_fw_load_fw_to_device(struct hl_device *hdev, const char *fw_name,
    29					void __iomem *dst)
    30	{
    31		const struct firmware *fw;
    32		const u64 *fw_data;
    33		size_t fw_size;
    34		int rc;
    35	
    36		rc = request_firmware(&fw, fw_name, hdev->dev);
    37		if (rc) {
    38			dev_err(hdev->dev, "Firmware file %s is not found!\n", fw_name);
    39			goto out;
    40		}
    41	
    42		fw_size = fw->size;
    43		if ((fw_size % 4) != 0) {
    44			dev_err(hdev->dev, "Illegal %s firmware size %zu\n",
    45				fw_name, fw_size);
    46			rc = -EINVAL;
    47			goto out;
    48		}
    49	
    50		dev_dbg(hdev->dev, "%s firmware size == %zu\n", fw_name, fw_size);
    51	
    52		if (fw_size > FW_FILE_MAX_SIZE) {
    53			dev_err(hdev->dev,
  > 54				"FW file size %lu exceeds maximum of %u bytes\n",
    55				fw_size, FW_FILE_MAX_SIZE);
    56			rc = -EINVAL;
    57			goto out;
    58		}
    59	
    60		fw_data = (const u64 *) fw->data;
    61	
    62		memcpy_toio(dst, fw_data, fw_size);
    63	
    64	out:
    65		release_firmware(fw);
    66		return rc;
    67	}
    68	

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