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Bug 1978966

Summary:	edk2 does not ignore PMBR protective record BootIndicator as required by UEFI spec
Product:	[Fedora] Fedora	Reporter:	Chris Murphy <bugzilla>
Component:	edk2	Assignee:	Paolo Bonzini <pbonzini>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	34	CC:	berrange, crobinso, kraxel, pbonzini, philmd, virt-maint
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Chris Murphy 2021-07-03 18:48:55 UTC

Description of problem:

edk2-ovmf is taking a PMBR protective record's BootIndictor bit into account when deciding whether the GPT is valid or not. When pmbr_boot (a.k.a setting a bit on the protective record partition entry's BootIndictor in the PMBR, a.k.a. setting the boot flag, a.k.a. setting the active bit) is set, the GPT is seemingly considered invalid by edk2-ovmf and the system is not bootable.


Version-Release number of selected component (if applicable):
edk2-ovmf-20200801stable-4.fc34.noarch

How reproducible:
Always


Steps to Reproduce:
1. Create a UEFI bootable image, boot it
2. parted /dev/vda disk_set pmbr_boot on
3. Try to boot the image

Actual results:

Firmware drops to an EFI shell.

Expected results:

It should boot.


Additional info:

Upstream bug has details including a test image attached.