578 	uint32_t stackshotbuf_size = 0;  in kern_stack_snapshot_internal()  local
730 	stackshotbuf_size = stackshot_estimate =  in kern_stack_snapshot_internal()
735 	    flags, stackshotbuf_size, pid, since_timestamp);  in kern_stack_snapshot_internal()
738 	for (; stackshotbuf_size <= max_tracebuf_size; stackshotbuf_size <<= 1) {  in kern_stack_snapshot_internal()
739 		if (kmem_alloc(kernel_map, (vm_offset_t *)&stackshotbuf, stackshotbuf_size,  in kern_stack_snapshot_internal()
749 		kcdata_p = kcdata_memory_alloc_init((mach_vm_address_t)stackshotbuf, hdr_tag, stackshotbuf_size,  in kern_stack_snapshot_internal()
778 		kdp_snapshot_preflight(pid, stackshotbuf, stackshotbuf_size, flags, kcdata_p, since_timestamp,  in kern_stack_snapshot_internal()
801 			kmem_free(kernel_map, (vm_offset_t)stackshotbuf, stackshotbuf_size);  in kern_stack_snapshot_internal()
808 				    time_end - time_start, stackshot_estimate, stackshotbuf_size);  in kern_stack_snapshot_internal()
822 		assert(bytes_traced <= stackshotbuf_size);  in kern_stack_snapshot_internal()
838 		size_to_free = stackshotbuf_size - (int) VM_MAP_ROUND_PAGE(bytes_traced, PAGE_MASK);  in kern_stack_snapshot_internal()
843 			buf_to_free = (void *)((uint64_t)stackshotbuf + stackshotbuf_size - size_to_free);  in kern_stack_snapshot_internal()
847 		stackshotbuf_size = 0;  in kern_stack_snapshot_internal()
851 	if (stackshotbuf_size > max_tracebuf_size) {  in kern_stack_snapshot_internal()
858 		    error, tot_interrupts_off_abs, stackshotbuf_size, bytes_traced);  in kern_stack_snapshot_internal()
867 		kmem_free(kernel_map, (vm_offset_t)stackshotbuf, stackshotbuf_size);  in kern_stack_snapshot_internal()