the-blessing ~# dtrace -n 'fbt:netbsd:kmem_alloc:entry /execname == "xterm" && 40 < arg0 && arg0 <= 48/ { @[stack()] = count() }'
dtrace: description 'fbt:netbsd:kmem_alloc:entry ' matched 1 probe
^C


              netbsd`amap_alloc1+0xc8
              netbsd`amap_copy+0x82
              netbsd`uvm_fault_internal+0x1528
              netbsd`trap+0x2d5
              netbsd`alltraps+0x9e
                4

              netbsd`amap_extend+0x44e
              netbsd`uvm_mapent_trymerge+0x594
              netbsd`amap_copy+0x28d
              netbsd`uvm_fault_internal+0x1528
              netbsd`trap+0x2d5
              netbsd`alltraps+0x9e
                4

              netbsd`amap_alloc1+0x9b
              netbsd`amap_alloc+0x40
              netbsd`amap_copy+0x2aa
              netbsd`uvm_fault_internal+0x1528
              netbsd`trap+0x2d5
              netbsd`alltraps+0x9e
                8

              netbsd`amap_alloc1+0xaf
              netbsd`amap_alloc+0x40
              netbsd`amap_copy+0x2aa
              netbsd`uvm_fault_internal+0x1528
              netbsd`trap+0x2d5
              netbsd`alltraps+0x9e
                8

              netbsd`amap_alloc1+0xc8
              netbsd`amap_alloc+0x40
              netbsd`amap_copy+0x2aa
              netbsd`uvm_fault_internal+0x1528
              netbsd`trap+0x2d5
              netbsd`alltraps+0x9e
                8

              netbsd`amap_alloc1+0x9b
              netbsd`amap_copy+0x82
              netbsd`uvm_fault_internal+0x1528
              netbsd`trap+0x2d5
              netbsd`alltraps+0x9e
               12

              netbsd`amap_alloc1+0xaf
              netbsd`amap_copy+0x82
              netbsd`uvm_fault_internal+0x1528
              netbsd`trap+0x2d5
              netbsd`alltraps+0x9e
               12
the-blessing ~#