uvm_fault(0xffffffff82ac3520, 0x0, 0, 2) -> e
kernel: page fault trap, code=0
Stopped at      km_free+0x118:  movq    $0,0(%rax)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*135319  44374      0     0x14000      0x200    0  systqmp
km_free(0,1000,ffffffff82736c10,ffffffff82736c28) at km_free+0x118 sys/uvm/uvm_km.c:973
pool_p_free(ffffffff82ab00f0,fffffd8067c6cf90) at pool_p_free+0x14b sys/kern/subr_pool.c:1014
pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1585
taskq_thread(ffffffff8297e900) at taskq_thread+0x9b sys/kern/kern_task.c:449
end trace frame: 0x0, count: 11
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