panic: memory chunk 0xfffff8008db3b400 is already free!
cpuid = 0
Trace beginning at frame 0xfffff801186bf5a8
chunk_mark_free() at chunk_mark_free+0xae 0xffffffff80655dbe 
chunk_mark_free() at chunk_mark_free+0xae 0xffffffff80655dbe 
_kfree() at _kfree+0x262 0xffffffff806580e2 
rig_identify() at rig_identify+0x550 0xffffffff82600dd0 
isa_driver_added() at isa_driver_added+0x9c 0xffffffff809c698c 
devclass_add_driver() at devclass_add_driver+0xf3 0xffffffff8068cc73 
Debugger("panic")