Bug 574621 – Linux pvmmu guests (FC11, FC12, etc) crash on boot on AMD hosts with NPT disabled

Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.

Bug 574621 - Linux pvmmu guests (FC11, FC12, etc) crash on boot on AMD hosts with NPT disabled

Summary:	Linux pvmmu guests (FC11, FC12, etc) crash on boot on AMD hosts with NPT disa...

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 5
Classification:	Red Hat
Component:	kvm (Show other bugs)
Sub Component:
Version:	5.5
Hardware:	All Linux

Priority	high Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Virtualization Maintenance
QA Contact:	Virtualization Bugs
Docs Contact:

URL:
Whiteboard:
Keywords:	ZStream

Duplicates:	575257 590125 648984 (view as bug list)
Depends On:
Blocks:	578577 578579
	Show dependency tree / graph

Reported:	2010-03-17 20:11 EDT by Marcelo Tosatti
Modified:	2018-10-27 07:23 EDT (History)
CC List:	10 users (show)

See Also:
Fixed In Version:	kvm-83-165.el5
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2011-01-13 18:34:16 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:0028	normal	SHIPPED_LIVE	Low: kvm security and bug fix update	2011-01-13 06:03:39 EST

Groups: None (edit)

Description Marcelo Tosatti 2010-03-17 20:11:46 EDT

KVM: x86: ignore access permissions for hypercall patching

Ignore access permissions while patching hypercall instructions.
Otherwise KVM injects a page fault when trying to patch vmcall
on read-only text regions:

Freeing initrd memory: 8843k freed 
Freeing unused kernel memory: 660k freed 
Write protecting the kernel text: 4780k 
Write protecting the kernel read-only data: 1912k 
BUG: unable to handle kernel paging request at c01292e3
IP: [<c01292e3>] kvm_leave_lazy_mmu+0x43/0x70
*pde = 00910067 *pte = 00129161
Oops: 0003 [#1] SMP

CC: stable@kernel.org
Reported-and-Tested-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Comment 5 lihuang 2010-03-22 23:12:25 EDT

Hi Marcelo 
   Do we have reproducer for RHEL x86_64 host ?

Comment 6 Marcelo Tosatti 2010-03-23 14:20:05 EDT

*** Bug 575257 has been marked as a duplicate of this bug. ***

Comment 7 Marcelo Tosatti 2010-03-23 14:21:51 EDT

lihuang,

You need an AMD host without NPT and recent Linux guest (Fedora 12 for eg).

Comment 8 Marcelo Tosatti 2010-03-23 14:27:47 EDT

The original report can be found here:

https://bugs.edge.launchpad.net/ubuntu/+source/linux/+bug/531823

Comment 9 lihuang 2010-03-23 16:09:21 EDT

(In reply to comment #7)
> lihuang,
> 
> You need an AMD host without NPT and recent Linux guest (Fedora 12 for eg).    

Yes . did reproduced with Fc12 guest when disable NPT.

Thank you.

Comment 14 Miya Chen 2010-04-08 04:49:10 EDT

Tested in kvm-83-165.el5, this problem does not exist.
cmd:
/usr/libexec/qemu-kvm -no-hpet -rtc-td-hack -usbdevice tablet -smp 2 -m 4G -drive file=f12_32.qcow2,if=ide -net nic,vlan=0,macaddr=20:88:99:11:99:11 -net tap,vlan=0,script=/etc/qemu-ifup -uuid `uuidgen` -cpu qemu64,+sse2 -vnc :16 -monitor stdio -boot n

result:
f12_32bit can be installed successfully and then can boot successfully.

Comment 16 Ben Hutchings 2010-04-29 10:10:32 EDT

(In reply to comment #14)
> Tested in kvm-83-165.el5, this problem does not exist.

This package does not seem to be available; is there a timetable to release it?

Comment 17 Marcelo Tosatti 2010-05-16 22:21:18 EDT

*** Bug 590125 has been marked as a duplicate of this bug. ***

Comment 18 Amit Shah 2010-05-18 11:32:23 EDT

*** Bug 590125 has been marked as a duplicate of this bug. ***

Comment 21 Miya Chen 2010-11-02 01:19:26 EDT

Based on comment#14, change status to verified.

Comment 23 errata-xmlrpc 2011-01-13 18:34:16 EST

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0028.html

Comment 24 Glauber Costa 2011-03-01 15:10:43 EST

*** Bug 648984 has been marked as a duplicate of this bug. ***

Note You need to log in before you can comment on or make changes to this bug.