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Bug 1181267

Summary:	vfio-pci: Fix BAR size overflow
Product:	Red Hat Enterprise Linux 7	Reporter:	Alex Williamson <alex.williamson>
Component:	qemu-kvm	Assignee:	Alex Williamson <alex.williamson>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.0	CC:	acurrid, chayang, huding, juzhang, mrezanin, rbalakri, virt-maint, xfu
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	qemu-kvm-1.5.3-88.el7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-11-19 04:51:06 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:

Description Alex Williamson 2015-01-12 18:21:21 UTC

Description of problem:

vfio-pci uses unsigned int for BAR size when mapping them.  These will overflow if the BAR is >= 4GB.

Version-Release number of selected component (if applicable):


How reproducible:
Requires a device with a 4GB or bigger PCI BAR.  Then 100%, I assume.

Steps to Reproduce:
1. Find such a device
2. Attempt to assign it to a guest
3.

Actual results:
Probably doesn't work

Expected results:
Should work


Additional info:
29c6e6df492d81b1843e5dd999171bb84c6effea

Suggest QE does regression testing unless such a card can be procured.

Comment 1 Miroslav Rezanina 2015-05-06 09:07:51 UTC

Fix included in qemu-kvm-1.5.3-88.el7

Comment 4 juzhang 2015-08-03 04:00:16 UTC

According to comment3, set this issue as verified.

Comment 6 errata-xmlrpc 2015-11-19 04:51:06 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-2015-2213.html