panic: hammer2_chain_alloc: unrecognized blockref type: 170
cpuid = 0
Trace beginning at frame 0xfffff801192f3840
hammer2_chain_alloc() at hammer2_chain_alloc+0x1ca 0xffffffff8096dd1a 
hammer2_chain_alloc() at hammer2_chain_alloc+0x1ca 0xffffffff8096dd1a 
hammer2_chain_get() at hammer2_chain_get+0xbd 0xffffffff8096fe0d 
hammer2_chain_lookup() at hammer2_chain_lookup+0x615 0xffffffff80970915 
hammer2_xop_readdir() at hammer2_xop_readdir+0x151 0xffffffff8097df61 
hammer2_primary_xops_thread() at hammer2_primary_xops_thread+0x280 0xffffffff8095d140 
Debugger("panic")

CPU0 stopping CPUs: 0x0000003e
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbd77f9(%rip)
db>