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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: ovmfAssignee: Laszlo Ersek <lersek>
Status: CLOSED ERRATA QA Contact: aihua liang <aliang>
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.3CC: 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