[PATCH 4/4] ef/libstub: arm/arm64: randomize the base of the UEFI rt services region
james.morse at arm.com
Fri Apr 7 12:11:52 EDT 2017
On 07/04/17 16:51, Ard Biesheuvel wrote:
> That is quite interesting, to be honest, because that patch should
> effectively be a NOP on systems that do not implement
> Could you run this from the UEFI shell please?
As you predicted:
UEFI RNG Protocol Testing :
-- Locate UEFI RNG Protocol : [Fail - Status = Not Found]
Error reported: Not Found
> I would expect it to report that it has no EFI_RNG_PROTOCOL
> implementation. Could you also check whether the working kernel still
> works /after/ having executed that utility?
The broken kernel remains broken after running that test. reboot. The working
kernel continues to work after running that test.
(On Monday) I will try with just these efi changes on v4.11-rc. to try and
eliminate everything else in linux-next.
This is one of those firmware versions that prints lots of
> efi: [Firmware Bug]: IRQ flags corrupted (0x00000140=>0x00000100) by EFI
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