Bug 1190980

Summary:	[PowerKVM] qemu-kvm core dumped when boot up guest with undefined object numa memdev
Product:	[Retired] RHEV for Power	Reporter:	Gu Nini <ngu>
Component:	qemu-kvm-rhev	Assignee:	David Gibson <dgibson>
Status:	CLOSED WONTFIX	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	2.1.1	CC:	bugproxy, fnovak, gklein, hannsj_uhl, hhuang, knoel, michen, thuth, virt-maint, xuhan, ypu
Target Milestone:	rc
Target Release:	---
Hardware:	ppc64
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-05-02 07:45:31 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:	1308609, 1359843

Description Gu Nini 2015-02-10 07:53:55 UTC

Description of problem:
Qemu-kvm core dumped when boot up the guest with "-object memory-backend-ram,host-nodes=0,policy=bind,id=mem-0,size=8192M,prealloc=yes -numa node,memdev=mem-0 ..."

Version-Release number of selected component (if applicable):
3.10.53-2020.1.pkvm2_1_1.49.ppc64
qemu-kvm-2.0.0-2.1.pkvm2_1_1.20.40.ppc64

How reproducible:
100%

Steps to Reproduce:
1. Start a guest with numa as follows:

/usr/bin/qemu-system-ppc64 -name spaprqcow-0209 -machine pseries-2.2,accel=kvm,usb=off -m 32768 -smp 4,sockets=1,cores=4,threads=2 -object memory-backend-ram,host-nodes=0,policy=bind,id=mem-0,size=8192M,prealloc=yes -numa node,memdev=mem-0 -object memory-backend-ram,host-nodes=1,policy=bind,id=mem-1,size=10240M,prealloc=yes -numa node,memdev=mem-1 -object memory-backend-ram,host-nodes=2,policy=bind,id=mem-2,size=11264M,prealloc=yes -numa node,memdev=mem-2 -object memory-backend-ram,host-nodes=3,policy=bind,id=mem-3,size=3072M,prealloc=yes -numa node,memdev=mem-3 -monitor stdio -vnc 0:04 ...-msg timestamp=on
**
ERROR:qom/object.c:437:object_new_with_type: assertion failed: (type != NULL)
Aborted (core dumped)

Actual results:
Qemu-kvm 'Aborted (core dumped) as above

Expected results:
There is an prompt to say that the the object is not supported

Additional info:
The bug only occurred on qemu 2.0 while not on qemu 2.1/2.2 and it's just bz 1031978 on x86

Comment 2 IBM Bug Proxy 2015-02-12 20:10:23 UTC

------- Comment From fnovak.com 2015-02-12 20:05 EDT-------
reverse mirror of RHBZ 1190980 - [PowerKVM] qemu-kvm core dumped when boot up guest with undefined object numa memdev

Comment 3 David Gibson 2015-03-24 22:56:34 UTC

This one only affects the IBM versions of qemu, not RHEL qemu-kvm-rhev versions, so removing from the RHEL7.2 tracker.

Also clearing release flags, since they're meaningless for an IBM bug.

Comment 5 David Gibson 2015-04-16 04:34:15 UTC

Frank,

Any news on this backport?

Comment 6 IBM Bug Proxy 2015-12-10 16:01:06 UTC

------- Comment From seg.com 2015-12-10 15:54 EDT-------
I see that someone on the Red Hat side changed the severity to "urgent", which is puzzling, since this was closed nine months ago as WONTFIX.

Comment 7 Thomas Huth 2016-01-12 10:47:00 UTC

(In reply to IBM Bug Proxy from comment #6)
> ------- Comment From seg.com 2015-12-10 15:54 EDT-------
> I see that someone on the Red Hat side changed the severity to "urgent",
> which is puzzling, since this was closed nine months ago as WONTFIX.

The Red Hat side of this bug hasn't been closed yet, also there is no comment why it won't be fixed at this side ... seems like the tickets got out of sync? I guess we should close the Red Hat ticket as well? Could you maybe post the reasons for the WONTFIX again?

Comment 8 IBM Bug Proxy 2016-01-18 21:20:45 UTC

------- Comment From seg.com 2016-01-18 16:16 EDT-------
It was marked as WONTFIX because it's not a problem in the current version of PowerKVM

Comment 9 Thomas Huth 2016-05-02 07:45:31 UTC

According to comment 8, the mirrored bug on the IBM site has been closed as WONTFIX, so I think we should do this with the RH side of the bug ticket as well.