Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1566586

Summary: Occurred core dump with multi-object when quitted qemu during doing IO [rhel-7.5.z]
Product: Red Hat Enterprise Linux 7 Reporter: Oneata Mircea Teodor <toneata>
Component: qemu-kvm-rhevAssignee: Stefan Hajnoczi <stefanha>
Status: CLOSED ERRATA QA Contact: aihua liang <aliang>
Severity: high Docs Contact:
Priority: high    
Version: 7.4-AltCC: aliang, chayang, coli, famz, juzhang, knoel, michen, mtessun, ngu, qzhang, rbalakri, stefanha, virt-maint, xianwang, yhong, yilzhang
Target Milestone: rcKeywords: ZStream
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: qemu-kvm-rhev-2.10.0-21.el7_5.2 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1480202 Environment:
Last Closed: 2018-05-10 16:04:49 UTC Type: ---
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: 1480202    
Bug Blocks:    

Description Oneata Mircea Teodor 2018-04-12 14:56:17 UTC 
This bug has been copied from bug #1480202 and has been proposed to be backported to 7.5 z-stream (EUS).
Comment 2 Miroslav Rezanina 2018-04-13 11:22:15 UTC 
Fix included in qemu-kvm-rhev-2.10.0-21.el7_5.2
Comment 4 aihua liang 2018-04-16 09:36:40 UTC 
Verified with qemu-kvm-rhev-2.10.0-21.el7_5.2, the problem has been resolved, so set its status to "verified".
Test version:
 qemu version: qemu-kvm-rhev-2.10.0-21.el7_5.2
 kernel version:3.10.0-862.el7.x86_64

Test steps:
 1. start guest with cmds:
    /usr/libexec/qemu-kvm \
-name 'avocado-vt-vm1'  \
-machine pc \
-vga std  \
-object iothread,id=iothread0 \
-object iothread,id=iothread1 \
-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=03,iothread=iothread0 \
-drive id=drive_image1,if=none,snapshot=on,aio=native,cache=none,format=qcow2,file=/home/kvm_autotest_root/images/rhel75-64-virtio.qcow2 \
-device scsi-hd,id=image1,drive=drive_image1,bus=scsi0.0,lun=0 \
-device virtio-net-pci,mac=9a:b2:b3:b4:b5:b6,id=iduCv1Ln,vectors=4,netdev=idKgexFk,bus=pci.0,addr=05  \
-netdev tap,id=idKgexFk,vhost=on \
-m 4096  \
-smp 4,maxcpus=4,cores=2,threads=1,sockets=2  \
-cpu host \
-vnc :1  \
-enable-kvm \
-monitor stdio \
-device virtio-scsi-pci,id=scsi1,bus=pci.0,addr=04,iothread=iothread1 \
-drive id=data_image1,if=none,werror=stop,rerror=stop,cache=none,format=qcow2,file=/home/test.qcow2 \
-device scsi-hd,id=data1,drive=data_image1,bus=scsi1.0,lun=0 \

2.Run dd in guest:
  dd if=/dev/zero of=/dev/sdb bs=4K count=1000000000 oflag=direct status=progress

3. During dd running, quit qemu
  (qemu)quit

Test result:
 QEMU quit successfully.
Comment 7 errata-xmlrpc 2018-05-10 16:04:49 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://access.redhat.com/errata/RHSA-2018:1369