Bug 1181267

Summary: vfio-pci: Fix BAR size overflow
Product: Red Hat Enterprise Linux 7 Reporter: Alex Williamson <alex.williamson>
Component: qemu-kvmAssignee: Alex Williamson <alex.williamson>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.0CC: 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