This type of crack suggest that there may be a structural issue i e.
Stair step cracks stucco from ceiling to floor.
Jagged cracks stair step cracks and 45 degree angle cracks generally signify structural movement or settling issues that are occasionally serious but usually harmless.
A typical cause of diagonal or step cracking in a concrete block wall and some brick or other cmu walls is frost heave or settlement but as you can see in the photo below a collapsing masonry block foundation may also show diagonal cracking near wall corners.
To repair the crack caulk it then apply an elastomeric patch.
Ceiling cracks that run across the ceiling to the wall and then downward on the wall.
A foundation issue or framing issue.
Basically a continuous crack going through the ceiling and the wall.
Ceiling cracks running diagonally across ceiling.
A crack a 16th of an inch or.
Step cracks showing on stucco go through to the other side of the cinder block.
A stair step crack is a diagonal crack but since mortar is usually not as strong as concrete block or brick the crack migrates to the mortar joints as it zigzags along a path of least resistance.