resize2fs: fix last bg's free clusters calculation on 64-bit file systems

Fixes-Coverity-bug: 1596645
Fixes: d43fb24ca0db ("resize2fs: fix r_bigalloc_big_expand test failure")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index 4daa068..f4a4098 100644 (file)
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -2870,7 +2870,8 @@ static errcode_t resize2fs_calculate_summary_stats(ext2_filsys fs)
                if ((group == fs->group_desc_count - 1) && (max & 7)) {
                        n = 0;
                        for (b = (fs->super->s_first_data_block +
-                                 (fs->super->s_blocks_per_group * group));
+                                 ((blk64_t) fs->super->s_blocks_per_group *
+                                  group));
                             b < ext2fs_blocks_count(fs->super);
                             b += EXT2FS_CLUSTER_RATIO(fs)) {
                                if (ext2fs_test_block_bitmap2(fs->block_map, b))