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Bug 1097363 - qemu ' KVM internal error. Suberror: 1' when query cpu frequently during pxe boot in Intel "Q95xx" host
Summary: qemu ' KVM internal error. Suberror: 1' when query cpu frequently during px...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.0
Hardware: Unspecified
OS: Unspecified
urgent
medium
Target Milestone: rc
: ---
Assignee: Paolo Bonzini
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 1088784
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-05-13 15:56 UTC by Paolo Bonzini
Modified: 2015-03-05 08:09 UTC (History)
13 users (show)

Fixed In Version: qemu-kvm-1.5.3-76.el7
Doc Type: Bug Fix
Doc Text:
Clone Of: 1088784
Environment:
Last Closed: 2015-03-05 08:09:22 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:0349 0 normal SHIPPED_LIVE Important: qemu-kvm security, bug fix, and enhancement update 2015-03-05 12:27:34 UTC

Comment 2 Paolo Bonzini 2014-05-16 22:44:41 UTC 
Upstream patch at

http://permalink.gmane.org/gmane.comp.emulators.qemu/273522

kvm.c and machine.c hunks only.
Comment 3 Miroslav Rezanina 2014-10-21 14:53:40 UTC 
Fix included in qemu-kvm-1.5.3-76.el7
Comment 5 Qian Guo 2014-10-30 06:35:55 UTC 
(In reply to Paolo Bonzini from comment #2)
> Upstream patch at
> 
> http://permalink.gmane.org/gmane.comp.emulators.qemu/273522
> 
> kvm.c and machine.c hunks only.

Hi, Paolo

How to verify this qemu-kvm bug, since if just test the original scenario, it is only kernel bug as bug 1088784 , with unfixed kernel(and any qemu builds), the original bug can be reproduced.

So if to verify the qemu-kvm side (bug 1088784 comment 17), do we need check something, could you help provide some suggestion?

Thanks
Comment 6 Paolo Bonzini 2014-11-05 10:25:48 UTC 
Hi Qian, you need to test it together with a fixed kernel, as suggested by the "depends on bug 1088784" in this BZ.
Comment 7 Qian Guo 2014-11-06 06:36:31 UTC 
Test this bug with kernel-3.10.0-196.el7.x86_64 and qemu-kvm-1.5.3-77.el7.x86_64

steps:
1.# /usr/libexec/qemu-kvm -cpu Penryn -m 4G -smp 4,sockets=1,cores=4,threads=1 -M pc -enable-kvm  -device piix3-usb-uhci,id=usb -name rhel7 -nodefaults -nodefconfig  -device virtio-balloon-pci,id=balloon0  -vnc :10 -vga std -global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0   -monitor stdio     -drive file=test,if=none,media=disk,format=raw,rerror=stop,werror=stop,aio=native,id=scsi-disk0 -device virtio-scsi-pci,id=bus2 -device scsi-hd,bus=bus2.0,drive=scsi-disk0,id=disk0 -netdev tap,id=netdev0,vhost=on,script=/etc/qemu-ifup -device virtio-net-pci,netdev=netdev0,id=vn1,mac=52:54:a0:0b:00:01 -boot menu=on -monitor unix:/tmp/m1,server,nowait -S


2.In host, query vcpu via hmp,
# while true; do echo "info cpus" |nc -U /tmp/m1 ; done 

Result, guest can continue to boot, and did not hit the crash.


And test with kernel-3.10.0-196.el7.x86_64 and qemu-kvm-rhev-2.1.2-6.el7.x86_64, can get same result as qemu-kvm-1.5.3-77.el7.x86_64.

So this bug is verified.
Comment 9 errata-xmlrpc 2015-03-05 08:09:22 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/RHSA-2015-0349.html
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