0x60000000 is not in kernel space
DFTRACE: goq: walk returned
DFTRACE: kfault: chain=0xfffff801174a8f40, frame1=0xfffff801174a8f60, frame1->fp=0xffffdead00000000 (unmapped kernel VA); db_jmpbuf never set this boot
Trace beginning at frame 0xfffff801174a8f40
kprintf() at kprintf 0xffffffff8069d340 
kprintf() at kprintf 0xffffffff8069d340 
DFTRACE: kfault: walk returned without crashing