[hubcap:for-next 1/6] fs/orangefs/orangefs-debugfs.c:244:20: sparse: sparse: unsigned value that used to be signed checked against zero?

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "low confidence static check warning: fs/orangefs/orangefs-debugfs.c:244:20: sparse: sparse: unsigned value that used to be signed checked against zero?"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Mike Marshall <hubcap@omnibond.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux.git for-next
head:   fb0898b77656046fd25c5f08cf89cd6e3899e6db
commit: 30b7c30781f0440e70a5e0c8943be423b57bbd9b [1/6] debugfs: take better advantage of strscpy.
:::::: branch date: 16 hours ago
:::::: commit date: 3 days ago
config: parisc-randconfig-r134-20260407 (https://download.01.org/0day-ci/archive/20260407/202604071540.ul3D0TzF-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 14.3.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260407/202604071540.ul3D0TzF-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/r/202604071540.ul3D0TzF-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> fs/orangefs/orangefs-debugfs.c:244:20: sparse: sparse: unsigned value that used to be signed checked against zero?
   fs/orangefs/orangefs-debugfs.c:242:17: sparse: signed value source
   fs/orangefs/orangefs-debugfs.c:343:20: sparse: sparse: unsigned value that used to be signed checked against zero?
   fs/orangefs/orangefs-debugfs.c:341:17: sparse: signed value source

vim +244 fs/orangefs/orangefs-debugfs.c

44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  234  
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  235  /*
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  236   * initialize the kernel-debug file.
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  237   */
0979cf95d201f7 fs/orangefs/orangefs-debugfs.c Greg Kroah-Hartman 2019-07-04  238  static void orangefs_kernel_debug_init(void)
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  239  {
31720a2b109b30 fs/orangefs/orangefs-debugfs.c Zhang Xiaoxu       2022-10-18  240  	static char k_buffer[ORANGEFS_MAX_DEBUG_STRING_LEN] = { };
30b7c30781f044 fs/orangefs/orangefs-debugfs.c Mike Marshall      2026-04-03  241  	size_t len =
30b7c30781f044 fs/orangefs/orangefs-debugfs.c Mike Marshall      2026-04-03  242  		strscpy(k_buffer, kernel_debug_string, sizeof(k_buffer) - 1);
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  243  
30b7c30781f044 fs/orangefs/orangefs-debugfs.c Mike Marshall      2026-04-03 @244  	if (len >= 0) {
9e835108a9ae1c fs/orangefs/orangefs-debugfs.c Thorsten Blum      2026-01-17  245  		k_buffer[len] = '\n';
9e835108a9ae1c fs/orangefs/orangefs-debugfs.c Thorsten Blum      2026-01-17  246  		k_buffer[len + 1] = '\0';
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  247  	} else {
9e835108a9ae1c fs/orangefs/orangefs-debugfs.c Thorsten Blum      2026-01-17  248  		strscpy(k_buffer, "none\n");
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  249  		pr_info("%s: overflow 1!\n", __func__);
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  250  	}
44f4641073f132 fs/orangefs/orangefs-debugfs.c Martin Brandenburg 2016-08-15  251  
c2a3a216c7e9ad fs/orangefs/orangefs-debugfs.c Al Viro            2025-01-12  252  	debugfs_create_file_aux_num(ORANGEFS_KMOD_DEBUG_FILE, 0444, debug_dir, k_buffer,
c2a3a216c7e9ad fs/orangefs/orangefs-debugfs.c Al Viro            2025-01-12  253  			    0, &kernel_debug_fops);
274dcf55bd4ab1 fs/orangefs/pvfs2-debugfs.c    Mike Marshall      2015-07-17  254  }
274dcf55bd4ab1 fs/orangefs/pvfs2-debugfs.c    Mike Marshall      2015-07-17  255  

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