Bug 1341733

Summary:	prevent SMM stack overflow in OVMF while enrolling certificates in "db"
Product:	Red Hat Enterprise Linux 7	Reporter:	Laszlo Ersek <lersek>
Component:	ovmf	Assignee:	Laszlo Ersek <lersek>
Status:	CLOSED ERRATA	QA Contact:	aihua liang <aliang>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	7.3	CC:	aliang, chayang, huding, juzhang, mrezanin, pbonzini, pingl, qizhu, xutian
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ovmf-20160608-1.git988715a.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-04 08:41:04 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1308678

Description Laszlo Ersek 2016-06-01 15:54:34 UTC

Found in version: OVMF-20160419-2.git90bb4c5.el7.noarch

These references say it all:
- bug 1308678 comments 14 through 19,
- the thread at http://thread.gmane.org/gmane.comp.bios.edk2.devel/12864

The fix is to set PcdCpuSmmStackGuard to TRUE, and PcdCpuSmmStackSize to 0x4000. Upstream is affected too.

Comment 1 Laszlo Ersek 2016-06-01 19:04:10 UTC

Posted upstream series:
http://thread.gmane.org/gmane.comp.bios.edk2.devel/12950

Comment 2 Laszlo Ersek 2016-06-06 09:02:49 UTC

Upstream commit range d2970bbc1d88..0d0c245dfb14.

Comment 4 aihua liang 2016-09-07 11:10:51 UTC

Has verified, SB can work normally.

Verified Version:
  kernel version:3.10.0-504.el7.x86_64
  qemu-kvm-rhev:qemu-kvm-rhev-2.6.0-22.el7.x86_64
  OVMF version:OVMF-20160608-3.git988715a.el7.noarch

Comment 6 errata-xmlrpc 2016-11-04 08:41:04 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2608.html