panic: thread 0xffff800020b298c8 cannot exit while holding sleeplocks
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*260572  75214      0     0x14000      0x200    0  reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:212
witness_thread_exit(ffff800020b298c8) at witness_thread_exit+0x213 sys/kern/subr_witness.c:1364
reaper(ffff800020aff8b8) at reaper+0x14c sys/kern/kern_exit.c:423
end trace frame: 0x0, count: 11
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