efi_loader: AllocatePages() must accept addr == 0
It must be possible to allocate memory at address 0 with AllocatePages().
Move a NULL pointer check.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
index 8d76851..2737938 100644
--- a/lib/efi_loader/efi_memory.c
+++ b/lib/efi_loader/efi_memory.c
@@ -334,7 +334,6 @@
*
* Check that the address is within allocated memory:
*
- * * The address cannot be NULL.
* * The address must be in a range of the memory map.
* * The address may not point to EFI_CONVENTIONAL_MEMORY.
*
@@ -349,8 +348,6 @@
{
struct efi_mem_list *item;
- if (!addr)
- return EFI_INVALID_PARAMETER;
list_for_each_entry(item, &efi_mem, link) {
u64 start = item->desc.physical_start;
u64 end = start + (item->desc.num_pages << EFI_PAGE_SHIFT);
@@ -560,6 +557,9 @@
efi_status_t ret;
struct efi_pool_allocation *alloc;
+ if (!buffer)
+ return EFI_INVALID_PARAMETER;
+
ret = efi_check_allocated((uintptr_t)buffer, true);
if (ret != EFI_SUCCESS)
return ret;