diff options
| -rw-r--r-- | fs/ext4/resize.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index a2fe9f53e59b..0cfa2f45abc1 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1880,6 +1880,10 @@ retry: return 0; ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &offset); + if (n_group > (0xFFFFFFFFUL / EXT4_INODES_PER_GROUP(sb))) { + ext4_warning(sb, "resize would cause inodes_count overflow"); + return -EINVAL; + } ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset); n_desc_blocks = num_desc_blocks(sb, n_group + 1); |