DF3253H: vget OK
DF3253H: *** INVAL HANDOFF #50 (poisoned node handed out) ***
panic: unmount: dangling vnode
cpuid = 4
Trace beginning at frame 0xfffff80117d257b8
dounmount() at dounmount+0x87c 0xffffffff80701bfc 
dounmount() at dounmount+0x87c 0xffffffff80701bfc 
sys_unmount() at sys_unmount+0x1f2 0xffffffff80701e02 
syscall2() at syscall2+0x11e 0xffffffff80bd6a0e 
Debugger("panic")

CPU4 stopping CPUs: 0x0000002f
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>