SYZFAIL: cover_unprotect invoked on an unmapped 
cover_t object
 (errno 1: Operation not permitted)
uvn_flush: obj=0xffff8000018e5878, offset=0x3ff000.  error during pageout.
uvn_flush: WARNING: changes to page may be lost!

OpenBSD/amd64 (ci-openbsd-kasan-4.us-central1-b.c.syzkaller.internal) (tty00)

login: set $maxwidth = 0
Password:
Login incorrect
login: show kasan
Password:
Login incorrect
login: show registers
Password:
Login incorrect
login: ps
Password:
Login incorrect
show malloc
login: Password:
Login incorrect
machine ddbcpu 0
login: Password:
Login incorrect
machine ddbcpu 1
login: Password:
Login incorrect
login: