[PATCH 1/1] efi_loader: rounding of image size

[Heinrich Schuchardt]

We should not first allocate memory and then report a rounded up value as
image size. Instead first round up according to section allocation and then
allocate the memory.

Fixes: 82786754b9d2 ("efi_loader: ImageSize must be multiple of SectionAlignment")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 lib/efi_loader/efi_image_loader.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/efi_loader/efi_image_loader.c b/lib/efi_loader/efi_image_loader.c
index 62066b72e4..3e63c24b52 100644
--- a/lib/efi_loader/efi_image_loader.c
+++ b/lib/efi_loader/efi_image_loader.c
@@ -898,6 +898,7 @@ efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle,
 		image_base = opt->ImageBase;
 		efi_set_code_and_data_type(loaded_image_info, opt->Subsystem);
 		handle->image_type = opt->Subsystem;
+		virt_size = ALIGN(virt_size, opt->SectionAlignment);
 		efi_reloc = efi_alloc(virt_size,
 				      loaded_image_info->image_code_type);
 		if (!efi_reloc) {
@@ -908,12 +909,12 @@ efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle,
 		handle->entry = efi_reloc + opt->AddressOfEntryPoint;
 		rel_size = opt->DataDirectory[rel_idx].Size;
 		rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress;
-		virt_size = ALIGN(virt_size, opt->SectionAlignment);
 	} else if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
 		IMAGE_OPTIONAL_HEADER32 *opt = &nt->OptionalHeader;
 		image_base = opt->ImageBase;
 		efi_set_code_and_data_type(loaded_image_info, opt->Subsystem);
 		handle->image_type = opt->Subsystem;
+		virt_size = ALIGN(virt_size, opt->SectionAlignment);
 		efi_reloc = efi_alloc(virt_size,
 				      loaded_image_info->image_code_type);
 		if (!efi_reloc) {
@@ -924,7 +925,6 @@ efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle,
 		handle->entry = efi_reloc + opt->AddressOfEntryPoint;
 		rel_size = opt->DataDirectory[rel_idx].Size;
 		rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress;
-		virt_size = ALIGN(virt_size, opt->SectionAlignment);
 	} else {
 		log_err("Invalid optional header magic %x\n",
 			nt->OptionalHeader.Magic);
-- 
2.30.2