hi： I try add vm in zynqmp, but when run rootserve crash. print See appendix for the log Function call stack create_objects for (int ut_index = 0; ut_index < spec->num_untyped; ut_index++) { .... CDL_Object *obj = &spec->objects[obj_id]; CDL_ObjectType capdl_obj_type = CDL_Obj_Type(obj); ----case crash } I fount when it access 0x440010 (the 42th of capdl_spec.objs, 0~41 objs access is OK) which is (CDL_Object)obj->type will case the crash, but I access the 42th obj->name ("frame_vm0_group_bin_0132" can be printed) is OK. [42] = { #ifdef CONFIG_DEBUG_BUILD .name = "frame_vm0_group_bin_0132", #endif .type = CDL_Frame, .size_bits = 21, .frame_extra = { .paddr = 0, }, }, what may be the problem ? mmu? Thank you very much. log: ## Starting application at 0x02793000 ... ELF-loader started on CPU: ARM Ltd. Cortex-A53 r0p4 paddr=[2793000..481106f] No DTB passed in from boot loader. Looking for DTB in CPIO archive...found at 2878d08. Loaded DTB from 2878d08. paddr=[239000..23afff] ELF-loading image 'kernel' paddr=[0..238fff] vaddr=[ff8000000000..ff8000238fff] virt_entry=ff8000000000 ELF-loading image 'capdl-loader' paddr=[23b000..2393fff] vaddr=[400000..2558fff] virt_entry=408af8 ELF loader relocated, continuing boot... Enabling hypervisor MMU and paging Jumping to kernel-image entry point... Warning: gpt_cntfrq 33333000, expected 100000000 Bootstrapping kernel Booting all finished, dropped to user space Caught cap fault in send phase at address (nil) while trying to handle: vm fault on data at address 0x440010 with status 0x93800007 in thread 0xff887f81b400 "rootserver" at address 0x4026e4 With stack: 0x2553d50: 0x424a9a 0x2553d58: 0x43ffb8 0x2553d60: 0x2553de0 0x2553d68: 0x408a4c 0x2553d70: 0x255a000 0x2553d78: 0x453588 0x2553d80: 0x0 0x2553d88: 0x25 0x2553d90: 0x900000000 0x2553d98: 0x100000000000009 0x2553da0: 0x800000000 0x2553da8: 0x43ffb8 0x2553db0: 0x2186 0x2553db8: 0x21dd 0x2553dc0: 0x2a 0x2553dc8: 0x408a40