Re: [PATCH v3 4/5] smb: introduce struct create_posix_ctxt_rsp

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

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on cifs/for-next]
[also build test WARNING on brauner-vfs/vfs.all linus/master next-20260216]
[cannot apply to v6.19]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/zhang-guodong-linux-dev/smb-move-smb3_fs_vol_info-into-common-fscc-h/20260216-162407
base:   git://git.samba.org/sfrench/cifs-2.6.git for-next
patch link:    https://lore.kernel.org/r/20260216082018.156695-5-zhang.guodong%40linux.dev
patch subject: [PATCH v3 4/5] smb: introduce struct create_posix_ctxt_rsp
config: i386-randconfig-r123-20260216 (https://download.01.org/0day-ci/archive/20260217/202602170244.C33LgPOh-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260217/202602170244.C33LgPOh-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/202602170244.C33LgPOh-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> fs/smb/client/smb2pdu.c:2365:31: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __le32 [usertype] nlink @@     got unsigned int [usertype] @@
   fs/smb/client/smb2pdu.c:2365:31: sparse:     expected restricted __le32 [usertype] nlink
   fs/smb/client/smb2pdu.c:2365:31: sparse:     got unsigned int [usertype]
>> fs/smb/client/smb2pdu.c:2366:37: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __le32 [usertype] reparse_tag @@     got unsigned int [usertype] @@
   fs/smb/client/smb2pdu.c:2366:37: sparse:     expected restricted __le32 [usertype] reparse_tag
   fs/smb/client/smb2pdu.c:2366:37: sparse:     got unsigned int [usertype]
>> fs/smb/client/smb2pdu.c:2367:30: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __le32 [usertype] mode @@     got unsigned int [usertype] @@
   fs/smb/client/smb2pdu.c:2367:30: sparse:     expected restricted __le32 [usertype] mode
   fs/smb/client/smb2pdu.c:2367:30: sparse:     got unsigned int [usertype]
   fs/smb/client/smb2pdu.c:6231:41: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] vol_serial_number @@     got restricted __le32 [usertype] VolumeSerialNumber @@
   fs/smb/client/smb2pdu.c:6231:41: sparse:     expected unsigned int [usertype] vol_serial_number
   fs/smb/client/smb2pdu.c:6231:41: sparse:     got restricted __le32 [usertype] VolumeSerialNumber

vim +2365 fs/smb/client/smb2pdu.c

  2353	
  2354	static void
  2355	parse_posix_ctxt(struct create_context *cc, struct smb2_file_all_info *info,
  2356			 struct create_posix_rsp *posix)
  2357	{
  2358		int sid_len;
  2359		u8 *beg = (u8 *)cc + le16_to_cpu(cc->DataOffset);
  2360		u8 *end = beg + le32_to_cpu(cc->DataLength);
  2361		u8 *sid;
  2362	
  2363		memset(posix, 0, sizeof(*posix));
  2364	
> 2365		posix->ctxt_rsp.nlink = le32_to_cpu(*(__le32 *)(beg + 0));
> 2366		posix->ctxt_rsp.reparse_tag = le32_to_cpu(*(__le32 *)(beg + 4));
> 2367		posix->ctxt_rsp.mode = le32_to_cpu(*(__le32 *)(beg + 8));
  2368	
  2369		sid = beg + 12;
  2370		sid_len = posix_info_sid_size(sid, end);
  2371		if (sid_len < 0) {
  2372			cifs_dbg(VFS, "bad owner sid in posix create response\n");
  2373			return;
  2374		}
  2375		memcpy(&posix->owner, sid, sid_len);
  2376	
  2377		sid = sid + sid_len;
  2378		sid_len = posix_info_sid_size(sid, end);
  2379		if (sid_len < 0) {
  2380			cifs_dbg(VFS, "bad group sid in posix create response\n");
  2381			return;
  2382		}
  2383		memcpy(&posix->group, sid, sid_len);
  2384	
  2385		cifs_dbg(FYI, "nlink=%d mode=%o reparse_tag=%x\n",
  2386			 posix->ctxt_rsp.nlink, posix->ctxt_rsp.mode,
  2387			 posix->ctxt_rsp.reparse_tag);
  2388	}
  2389	

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