static unsigned long find_random_phys_addr(unsigned long minimum,
unsigned long image_size)
{
+ u64 phys_addr;
+
/* Bail out early if it's impossible to succeed. */
if (minimum + image_size > mem_limit)
return 0;
if (!process_efi_entries(minimum, image_size))
process_e820_entries(minimum, image_size);
- return slots_fetch_random();
+ phys_addr = slots_fetch_random();
+
+ /* Perform a final check to make sure the address is in range. */
+ if (phys_addr < minimum || phys_addr + image_size > mem_limit) {
+ warn("Invalid physical address chosen!\n");
+ return 0;
+ }
+
+ return (unsigned long)phys_addr;
}
static unsigned long find_random_virt_addr(unsigned long minimum,