tree:   https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/cifs-for-viro
head:   36501a16f9488b5e40c3649db6c72ad356a4b861
commit: df3dc5b0ba08782bc1dd331928e61ec81f841942 [6/13] cifs: Implement splice_read to pass down ITER_BVEC not ITER_PIPE
config: i386-randconfig-s003
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/ammarfaizi2/linux-block/commit/df3dc5b0ba08782bc1dd331928e61ec81f841942
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/cifs-for-viro
        git checkout df3dc5b0ba08782bc1dd331928e61ec81f841942
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash

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

sparse warnings: (new ones prefixed by >>)
>> fs/cifs/file.c:5282:15: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> fs/cifs/file.c:5282:15: sparse:    unsigned int *
>> fs/cifs/file.c:5282:15: sparse:    unsigned long *
   fs/cifs/file.c:5295:24: sparse: sparse: incompatible types in comparison expression (different type sizes):
   fs/cifs/file.c:5295:24: sparse:    unsigned int *
   fs/cifs/file.c:5295:24: sparse:    unsigned long *
   fs/cifs/file.c:5298:25: sparse: sparse: incompatible types in comparison expression (different type sizes):
   fs/cifs/file.c:5298:25: sparse:    unsigned long *
   fs/cifs/file.c:5298:25: sparse:    unsigned int *
   fs/cifs/file.c:5338:25: sparse: sparse: incompatible types in comparison expression (different type sizes):
   fs/cifs/file.c:5338:25: sparse:    unsigned int *
   fs/cifs/file.c:5338:25: sparse:    unsigned long *

vim +5282 fs/cifs/file.c

  5261	
  5262	/*
  5263	 * Splice data from a file into a pipe.
  5264	 */
  5265	ssize_t cifs_splice_read(struct file *file, loff_t *ppos,
  5266				 struct pipe_inode_info *pipe, size_t len,
  5267				 unsigned int flags)
  5268	{
  5269		LIST_HEAD(pages);
  5270		struct iov_iter to;
  5271		struct bio_vec *bv;
  5272		struct kiocb kiocb;
  5273		struct page *page;
  5274		unsigned int head;
  5275		ssize_t ret;
  5276		size_t used, npages, chunk, remain, reclaim;
  5277		int i;
  5278	
  5279		/* Work out how much data we can actually add into the pipe */
  5280		used = pipe_occupancy(pipe->head, pipe->tail);
  5281		npages = max_t(ssize_t, pipe->max_usage - used, 0);
> 5282		len = min(len, npages * PAGE_SIZE);

-- 
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