tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

EmbeddedPkg: Unload image on EFI_SECURITY_VIOLATION 

For the LoadImage() boot service, with EFI_SECURITY_VIOLATION retval,
the Image was loaded and an ImageHandle was created with a valid
EFI_LOADED_IMAGE_PROTOCOL, but the image can not be started right now.
This follows UEFI Spec.

But if the caller of LoadImage() doesn't have the option to defer
the execution of an image, we can not treat EFI_SECURITY_VIOLATION
like any other LoadImage() error, we should unload image for the
EFI_SECURITY_VIOLATION to avoid resource leak.

This patch is to do error handling for EFI_SECURITY_VIOLATION explicitly
for the callers in EmbeddedPkg which don't have the policy to defer the
execution of the image.

Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Philippe Mathieu-Daude <philmd@redhat.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1992
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
This commit is contained in:
Dandan Bi 2019-09-03 15:58:40 +08:00 committed by Hao A Wu
parent 590c9d5828
commit 82e0c422b2
2 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
EmbeddedPkg/Application/AndroidFastboot/Arm/BootAndroidBootImg.c
View File

@ -73,6 +73,15 @@ StartEfiApplication (
Status = gBS->LoadImage (TRUE, ParentImageHandle, DevicePath, NULL, 0,
&ImageHandle);
if (EFI_ERROR (Status)) {
//
// With EFI_SECURITY_VIOLATION retval, the Image was loaded and an ImageHandle was created
// with a valid EFI_LOADED_IMAGE_PROTOCOL, but the image can not be started right now.
// If the caller doesn't have the option to defer the execution of an image, we should
// unload image for the EFI_SECURITY_VIOLATION to avoid resource leak.
//
if (Status == EFI_SECURITY_VIOLATION) {
gBS->UnloadImage (ImageHandle);
}
return Status;
}

12
EmbeddedPkg/Library/AndroidBootImgLib/AndroidBootImgLib.c
View File

@ -441,6 +441,18 @@ AndroidBootImgBoot (
Status = gBS->LoadImage (TRUE, gImageHandle,
(EFI_DEVICE_PATH *)&KernelDevicePath,
(VOID*)(UINTN)Kernel, KernelSize, &ImageHandle);
if (EFI_ERROR (Status)) {
//
// With EFI_SECURITY_VIOLATION retval, the Image was loaded and an ImageHandle was created
// with a valid EFI_LOADED_IMAGE_PROTOCOL, but the image can not be started right now.
// If the caller doesn't have the option to defer the execution of an image, we should
// unload image for the EFI_SECURITY_VIOLATION to avoid resource leak.
//
if (Status == EFI_SECURITY_VIOLATION) {
gBS->UnloadImage (ImageHandle);
}
return Status;
}
// Set kernel arguments
Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid,