[paragon-software-group-ntfs3:master 16/16] fs/ntfs3/inode.c:1024 ntfs_writepages() error: uninitialized symbol 'folio'.

[paragon-software-group-ntfs3:master 16/16] fs/ntfs3/inode.c:1024 ntfs_writepages() error: uninitialized symbol 'folio'.

[Dan Carpenter]

tree:   https://github.com/Paragon-Software-Group/linux-ntfs3.git master
head:   099ef9ab9203dff327f2d61e44773f9acbc01f13
commit: 099ef9ab9203dff327f2d61e44773f9acbc01f13 [16/16] fs/ntfs3: implement iomap-based file operations
config: um-randconfig-r072-20260101 (https://download.01.org/0day-ci/archive/20260101/202601010513.axd56bks-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0

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 <dan.carpenter@linaro.org>
| Closes: https://lore.kernel.org/r/202601010513.axd56bks-lkp@intel.com/

smatch warnings:
fs/ntfs3/inode.c:1024 ntfs_writepages() error: uninitialized symbol 'folio'.

vim +/folio +1024 fs/ntfs3/inode.c

099ef9ab9203df Konstantin Komarov 2025-12-26  1002  static int ntfs_writepages(struct address_space *mapping,
099ef9ab9203df Konstantin Komarov 2025-12-26  1003  			   struct writeback_control *wbc)
099ef9ab9203df Konstantin Komarov 2025-12-26  1004  {
099ef9ab9203df Konstantin Komarov 2025-12-26  1005  	int err;
099ef9ab9203df Konstantin Komarov 2025-12-26  1006  	struct inode *inode = mapping->host;
099ef9ab9203df Konstantin Komarov 2025-12-26  1007  	struct ntfs_inode *ni = ntfs_i(inode);
099ef9ab9203df Konstantin Komarov 2025-12-26  1008  	struct iomap_writepage_ctx wpc = {
099ef9ab9203df Konstantin Komarov 2025-12-26  1009  		.inode = mapping->host,
099ef9ab9203df Konstantin Komarov 2025-12-26  1010  		.wbc = wbc,
099ef9ab9203df Konstantin Komarov 2025-12-26  1011  		.ops = &ntfs_writeback_ops,
099ef9ab9203df Konstantin Komarov 2025-12-26  1012  	};
099ef9ab9203df Konstantin Komarov 2025-12-26  1013  
099ef9ab9203df Konstantin Komarov 2025-12-26  1014  	/* Avoid any operation if inode is bad. */
099ef9ab9203df Konstantin Komarov 2025-12-26  1015  	if (unlikely(is_bad_ni(ni)))
099ef9ab9203df Konstantin Komarov 2025-12-26  1016  		return -EINVAL;
099ef9ab9203df Konstantin Komarov 2025-12-26  1017  
099ef9ab9203df Konstantin Komarov 2025-12-26  1018  	if (unlikely(ntfs3_forced_shutdown(inode->i_sb)))
099ef9ab9203df Konstantin Komarov 2025-12-26  1019  		return -EIO;
099ef9ab9203df Konstantin Komarov 2025-12-26  1020  
099ef9ab9203df Konstantin Komarov 2025-12-26  1021  	if (is_resident(ni)) {
099ef9ab9203df Konstantin Komarov 2025-12-26  1022  		struct folio *folio;
099ef9ab9203df Konstantin Komarov 2025-12-26  1023  
099ef9ab9203df Konstantin Komarov 2025-12-26 @1024  		while ((folio = writeback_iter(mapping, wbc, folio, &err)))
                                                                                                             ^^^^^
Uninitialized.

099ef9ab9203df Konstantin Komarov 2025-12-26  1025  			err = ntfs_resident_writepage(folio, wbc);
099ef9ab9203df Konstantin Komarov 2025-12-26  1026  
82cae269cfa953 Konstantin Komarov 2021-08-13  1027  		return err;
82cae269cfa953 Konstantin Komarov 2021-08-13  1028  	}
82cae269cfa953 Konstantin Komarov 2021-08-13  1029  
099ef9ab9203df Konstantin Komarov 2025-12-26  1030  	return iomap_writepages(&wpc);
099ef9ab9203df Konstantin Komarov 2025-12-26  1031  }

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