uvm_fault(0xffffffff82df1d88, 0x0, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at      km_free+0x128:  movq    $0,0(%rax)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*176988  45293      0     0x14000      0x200    0  systqmp
km_free(0,1000,ffffffff829c0d48,ffffffff829c0d60) at km_free+0x128 sys/uvm/uvm_km.c:870
pool_p_free(ffffffff82e71ac0,fffffd8059e59f90) at pool_p_free+0x14d sys/kern/subr_pool.c:1012
pool_gc_pages(0) at pool_gc_pages+0x255 sys/kern/subr_pool.c:1583
taskq_thread(ffffffff82c9ef60) at taskq_thread+0xf5 sys/kern/kern_task.c:448
end trace frame: 0x0, count: 11
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