login: panic: lockmgr: locking against myself
cpuid = 1
Trace beginning at frame 0xfffff80117ec7558
lockmgr_exclusive() at lockmgr_exclusive+0x3e0 0xffffffff80647f30 
lockmgr_exclusive() at lockmgr_exclusive+0x3e0 0xffffffff80647f30 
vm_map_user_wiring() at vm_map_user_wiring+0x3a 0xffffffff809a4caa 
vm_map_growstack() at vm_map_growstack+0x399 0xffffffff809a7219 
vm_fault() at vm_fault+0x11f 0xffffffff8099ddcf 
trap_pfault() at trap_pfault+0x209 0xffffffff80bd5439 
Debugger("panic")

CPU1 stopping CPUs: 0x0000003d
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>