• Eric Biggers's avatar
    ext4: mark inode dirty after converting inline directory · 27d9bf09
    Eric Biggers authored
    commit b9cf625d upstream.
    
    If ext4_convert_inline_data() was called on a directory with inline
    data, the filesystem was left in an inconsistent state (as considered by
    e2fsck) because the file size was not increased to cover the new block.
    This happened because the inode was not marked dirty after i_disksize
    was updated.  Fix this by marking the inode dirty at the end of
    ext4_finish_convert_inline_dir().
    
    This bug was probably not noticed before because most users mark the
    inode dirty afterwards for other reasons.  But if userspace executed
    FS_IOC_SET_ENCRYPTION_POLICY with invalid parameters, as exercised by
    'kvm-xfstests -c adv generic/396', then the inode was never marked dirty
    after updating i_disksize.
    
    Fixes: 3c47d541Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
    Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    27d9bf09
inline.c 49.4 KB