[djwong-xfs:fuse-iomap-cache 43/45] fs/fuse/file_iomap.c:1997 fuse_iomap_upsert_validate_dev() error: uninitialized symbol 'map_end'.

[djwong-xfs:fuse-iomap-cache 43/45] fs/fuse/file_iomap.c:1997 fuse_iomap_upsert_validate_dev() error: uninitialized symbol 'map_end'.

[kernel test robot]

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: "Darrick J. Wong" <darrick.wong@oracle.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git fuse-iomap-cache
head:   62857bad704590b8ed2cc579b4a859b953b93d5f
commit: 7954c15726a337e560ff0506896f2095e111cec9 [43/45] fuse: enable iomap cache management
:::::: branch date: 30 hours ago
:::::: commit date: 30 hours ago
config: x86_64-randconfig-161-20250615 (https://download.01.org/0day-ci/archive/20250615/202506150737.o7ZdCn6W-lkp@intel.com/config)
compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247)

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>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202506150737.o7ZdCn6W-lkp@intel.com/

smatch warnings:
fs/fuse/file_iomap.c:1997 fuse_iomap_upsert_validate_dev() error: uninitialized symbol 'map_end'.

vim +/map_end +1997 fs/fuse/file_iomap.c

7954c15726a337 Darrick J. Wong 2025-05-30  1978  
7954c15726a337 Darrick J. Wong 2025-05-30  1979  static inline int
7954c15726a337 Darrick J. Wong 2025-05-30  1980  fuse_iomap_upsert_validate_dev(
7954c15726a337 Darrick J. Wong 2025-05-30  1981  	const struct fuse_iomap_dev	*fb,
7954c15726a337 Darrick J. Wong 2025-05-30  1982  	uint16_t			map_type,
7954c15726a337 Darrick J. Wong 2025-05-30  1983  	uint64_t			map_addr,
7954c15726a337 Darrick J. Wong 2025-05-30  1984  	uint64_t			map_length)
7954c15726a337 Darrick J. Wong 2025-05-30  1985  {
7954c15726a337 Darrick J. Wong 2025-05-30  1986  	uint64_t			map_end;
7954c15726a337 Darrick J. Wong 2025-05-30  1987  	sector_t			device_bytes;
7954c15726a337 Darrick J. Wong 2025-05-30  1988  
7954c15726a337 Darrick J. Wong 2025-05-30  1989  	if (!fb)
7954c15726a337 Darrick J. Wong 2025-05-30  1990  		return 0;
7954c15726a337 Darrick J. Wong 2025-05-30  1991  
7954c15726a337 Darrick J. Wong 2025-05-30  1992  	if (map_addr != FUSE_IOMAP_NULL_ADDR &&
7954c15726a337 Darrick J. Wong 2025-05-30  1993  	    BAD_DATA(check_add_overflow(map_addr, map_length, &map_end)))
7954c15726a337 Darrick J. Wong 2025-05-30  1994  		return -EIO;
7954c15726a337 Darrick J. Wong 2025-05-30  1995  
7954c15726a337 Darrick J. Wong 2025-05-30  1996  	device_bytes = bdev_nr_sectors(fb->bdev) << SECTOR_SHIFT;
7954c15726a337 Darrick J. Wong 2025-05-30 @1997  	if (BAD_DATA(map_end > device_bytes))
7954c15726a337 Darrick J. Wong 2025-05-30  1998  		return -EIO;
7954c15726a337 Darrick J. Wong 2025-05-30  1999  
7954c15726a337 Darrick J. Wong 2025-05-30  2000  	return 0;
7954c15726a337 Darrick J. Wong 2025-05-30  2001  }
7954c15726a337 Darrick J. Wong 2025-05-30  2002  

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