[jimc:dd-drm-next 3/16] lib/dynamic_debug.c:786:54: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int')

[jimc:dd-drm-next 3/16] lib/dynamic_debug.c:786:54: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int')

[kernel test robot]

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tree:   https://github.com/jimc/linux.git dd-drm-next
head:   02a6c357b6a5eb02cc6b2ceb5a7a93c809388ae0
commit: 74992de06222ed51caed07800e291e68eb4a627e [3/16] dyndbg: rationalize verbosity
config: hexagon-randconfig-r034-20210911 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 261cbe98c38f8c1ee1a482fe76511110e790f58a)
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://github.com/jimc/linux/commit/74992de06222ed51caed07800e291e68eb4a627e
        git remote add jimc https://github.com/jimc/linux.git
        git fetch --no-tags jimc dd-drm-next
        git checkout 74992de06222ed51caed07800e291e68eb4a627e
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=hexagon 

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 >>):

>> lib/dynamic_debug.c:786:54: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
           v2pr_info("read %lu bytes from userspace <\n%s>\n", len, tmpbuf);
                           ~~~                                 ^~~
                           %u
   lib/dynamic_debug.c:120:49: note: expanded from macro 'v2pr_info'
   #define v2pr_info(fmt, ...)     vnpr_info(2, fmt, ##__VA_ARGS__)
                                                ~~~    ^~~~~~~~~~~
   lib/dynamic_debug.c:116:18: note: expanded from macro 'vnpr_info'
                   pr_info(fmt, ##__VA_ARGS__);                    \
                           ~~~    ^~~~~~~~~~~
   include/linux/printk.h:420:34: note: expanded from macro 'pr_info'
           printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
                                   ~~~     ^~~~~~~~~~~
   1 warning generated.


vim +786 lib/dynamic_debug.c

   765	
   766	/*
   767	 * File_ops->write method for <debugfs>/dynamic_debug/control.  Gathers the
   768	 * command text from userspace, parses and executes it.
   769	 */
   770	#define USER_BUF_PAGE 4096
   771	static ssize_t ddebug_proc_write(struct file *file, const char __user *ubuf,
   772					  size_t len, loff_t *offp)
   773	{
   774		char *tmpbuf;
   775		int ret;
   776	
   777		if (len == 0)
   778			return 0;
   779		if (len > USER_BUF_PAGE - 1) {
   780			pr_warn("expected <%d bytes into control\n", USER_BUF_PAGE);
   781			return -E2BIG;
   782		}
   783		tmpbuf = memdup_user_nul(ubuf, len);
   784		if (IS_ERR(tmpbuf))
   785			return PTR_ERR(tmpbuf);
 > 786		v2pr_info("read %lu bytes from userspace <\n%s>\n", len, tmpbuf);
   787	
   788		ret = ddebug_exec_queries(tmpbuf, NULL);
   789		kfree(tmpbuf);
   790		if (ret < 0)
   791			return ret;
   792	
   793		*offp += len;
   794		return len;
   795	}
   796	

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

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