login: link_elf_obj_obj: symbol sndstat_unregisterfile undefined
linker_load_file: Unsupported file type
df5023: feeder_register("feeder_volume")
df5023: loaded (DF-5022 feeder_volume double-free harness)
df5023: control OK: feeder_volume init'd on 0x00200010 (f->data=0xfffff8004f164338), destroying cleanly
df5023: control allocs: 0xfffff8004f164338 != 0xfffff8004f164370 (expected distinct)
df5023: TRIGGER: desc.in=0x00000010 AFMT_CHANNEL=0
feeder_init(0xfffff8008d9fc750) on feeder_volume returned 22
panic: memory chunk 0xfffff8004f164370 is already free!
cpuid = 0
Trace beginning at frame 0xfffff8011810c6e8
chunk_mark_free() at chunk_mark_free+0xae 0xffffffff80655dbe 
chunk_mark_free() at chunk_mark_free+0xae 0xffffffff80655dbe 
_kfree() at _kfree+0x262 0xffffffff806580e2 
feed_volume_free() at feed_volume_free+0x21 0xffffffff826006b1 
feeder_create() at feeder_create+0xf8 0xffffffff826000f8 
df5023_modevent() at df5023_modevent+0x1f1 0xffffffff82600301 
Debugger("panic")

CPU0 stopping CPUs: 0x0000003e
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)