utask_fixup_stack_len rounds the wrong way, causing us to take more stack if the length isn't a multiple of 4, not less. Only an issue if someone tries to define a stack with a length that isn't a multiple of 4, but a critical issue if they do.
`utask_fixup_stack_len` rounds the wrong way, causing us to take _more_ stack if the length isn't a multiple of 4, not less. Only an issue if someone tries to define a stack with a length that isn't a multiple of 4, but a critical issue if they do.
utask_fixup_stack_lenrounds the wrong way, causing us to take more stack if the length isn't a multiple of 4, not less. Only an issue if someone tries to define a stack with a length that isn't a multiple of 4, but a critical issue if they do.