[Crash-utility] How to parse out kmem output?

Hi list, I am current tracking one issue related with memory. What I want to know if a kernel address which is alloced by kmalloc, 1. whether that address is already freed or not 2. if not freed, could I know which task or struct is owning that range? I am also try to use the kmem command to get more info, but I don't know the meaning for its output... Like "CACHE"/"ALLOCATED"/"TOTAL"/"SLABS" member, what are they referring to? And according to "FREE / [ALLOCATED]" as below, does it mean that 0xe1416acc already be freed? crash> kmem -S 0xe1416acc CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE e0002400 kmalloc-2048 2048 156 160 10 32k SLAB MEMORY NODE TOTAL ALLOCATED FREE c1628200 e1410000 0 12 12 0 FREE / [ALLOCATED] [e1410000] [e1410800] [e1411000] [e1411800] e1412000 (cpu 0 cache) e1412800 (cpu 0 cache) e1413000 (cpu 0 cache) e1413800 (cpu 0 cache) e1414000 (cpu 0 cache) e1414800 (cpu 0 cache) e1415000 (cpu 0 cache) [e1415800] crash> Also seems current kmem only support SLAB, right? If memory is allocated with like SLUB or SLOB, could the kmem still handle it? Thanks, Lei