Re: [PATCH v3 27/38] nfsd: add notification handlers for dir events

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

Hi Jeff,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 36c204d169319562eed170f266c58460d5dad635]

url:    https://github.com/intel-lab-lkp/linux/commits/Jeff-Layton/filelock-push-the-S_ISREG-check-down-to-setlease-handlers/20250925-022057
base:   36c204d169319562eed170f266c58460d5dad635
patch link:    https://lore.kernel.org/r/20250924-dir-deleg-v3-27-9f3af8bc5c40%40kernel.org
patch subject: [PATCH v3 27/38] nfsd: add notification handlers for dir events
config: x86_64-randconfig-122-20250926 (https://download.01.org/0day-ci/archive/20250927/202509270005.wbvF4f6R-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/20250927/202509270005.wbvF4f6R-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/202509270005.wbvF4f6R-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> fs/nfsd/nfs4xdr.c:3763:18: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] *attrmask @@     got restricted __be32 [usertype] * @@
   fs/nfsd/nfs4xdr.c:3763:18: sparse:     expected unsigned int [usertype] *attrmask
   fs/nfsd/nfs4xdr.c:3763:18: sparse:     got restricted __be32 [usertype] *

vim +3763 fs/nfsd/nfs4xdr.c

  3754	
  3755	static bool
  3756	nfsd4_setup_notify_entry4(struct notify_entry4 *ne, struct xdr_stream *xdr,
  3757				  struct dentry *dentry, struct nfs4_delegation *dp,
  3758				  char *name, u32 namelen)
  3759	{
  3760		uint32_t *attrmask;
  3761	
  3762		/* Reserve space for attrmask */
> 3763		attrmask = xdr_reserve_space(xdr, 3 * sizeof(uint32_t));
  3764		if (!attrmask)
  3765			return false;
  3766	
  3767		ne->ne_file.data = name;
  3768		ne->ne_file.len = namelen;
  3769		ne->ne_attrs.attrmask.element = attrmask;
  3770	
  3771		attrmask[0] = 0;
  3772		attrmask[1] = 0;
  3773		attrmask[2] = 0;
  3774		ne->ne_attrs.attr_vals.data = NULL;
  3775		ne->ne_attrs.attr_vals.len = 0;
  3776		ne->ne_attrs.attrmask.count = 1;
  3777		return true;
  3778	}
  3779	

-- 
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