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 08d2312c0fd..b27c96d0196 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1882,6 +1882,10 @@ retry: return 0; n_group = ext4_get_group_number(sb, n_blocks_count - 1); + 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); |