cpuid = 2
Trace beginning at frame 0xfffff801191b3660
crit_panic() at crit_panic+0x2f 0xffffffff80672cff 
crit_panic() at crit_panic+0x2f 0xffffffff80672cff 
spin_unlock() at spin_unlock+0x49 0xffffffff8096cda9 
hammer2_base_insert() at hammer2_base_insert+0x652 0xffffffff80972ae2 
hammer2_chain_rename_obref() at hammer2_chain_rename_obref+0x66 0xffffffff80972b76 
hammer2_chain_indirect_maintenance() at hammer2_chain_indirect_maintenance+0x411 0xffffffff80974aa1 
Debugger("panic")

CPU2 stopping CPUs: 0x0000003b
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>