diff options
| -rw-r--r-- | fs/ext4/inode.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index f0cabc8c96cb..6e8dbc1e4f95 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4231,6 +4231,12 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) goto bad_inode; raw_inode = ext4_raw_inode(&iloc); + if ((ino == EXT4_ROOT_INO) && (raw_inode->i_links_count == 0)) { + EXT4_ERROR_INODE(inode, "root inode unallocated"); + ret = -EFSCORRUPTED; + goto bad_inode; + } + if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) { ei->i_extra_isize = le16_to_cpu(raw_inode->i_extra_isize); if (EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize > |