Message ID | 1369047116-9378-60-git-send-email-luis.henriques@canonical.com |
---|---|
State | New |
Headers | show |
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index 097a7b0..d0ba1a9 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1680,6 +1680,10 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count) 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 = (n_group + EXT4_DESC_PER_BLOCK(sb)) /