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Bug 1393042

Summary:	system_reset should clear pending request for error (IDE)
Product:	Red Hat Enterprise Linux 7	Reporter:	Marcel Kolaja <mkolaja>
Component:	qemu-kvm	Assignee:	John Snow <jsnow>
Status:	CLOSED ERRATA	QA Contact:	Yiqian Wei <yiwei>
Severity:	medium	Docs Contact:
Priority:	high
Version:	7.2	CC:	ailan, areis, armbru, chayang, huding, jsnow, juzhang, knoel, michen, mkenneth, mnavrati, qzhang, rbalakri, virt-bugs, virt-maint, zhguo
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	x86_64
OS:	Windows
Whiteboard:
Fixed In Version:	qemu-kvm-1.5.3-126.el7_3.1	Doc Type:	Bug Fix
Doc Text:	Previously, using the qemu-kvm system_reset utility when no space was left on on the host caused the qemu-kvm service to terminate with a segmentation fault. The underlying source code has been modified to fix this bug. As a result, the qemu-kvm process stays active, and guest systems can be reset without an error.	Story Points:	---
Clone Of:	1299875	Environment:
Last Closed:	2017-01-17 18:08:27 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:	1299875
Bug Blocks:

Description Marcel Kolaja 2016-11-08 17:48:12 UTC

This bug has been copied from bug #1299875 and has been proposed
to be backported to 7.3 z-stream (EUS).

Comment 3 Miroslav Rezanina 2016-11-11 17:43:31 UTC

Fix included in qemu-kvm-1.5.3-126.el7_3.1

Comment 5 FuXiangChun 2016-11-15 02:36:29 UTC

reproduced this bug with qemu-kvm-1.5.3-105.el7_2.7.x86_64.

# qemu-img create -f qcow2 test.qcow2 8G
Formatting 'test.qcow2', fmt=qcow2 size=8589934592 encryption=off cluster_size=65536 lazy_refcounts=off
 
# ulimit -f 256

#/usr/libexec/qemu-kvm -m 2048 -smp 2 \
    \
    -drive file=test.qcow2,werror=stop,rerror=stop,cache=writeback,id=hd0,if=none \
    -device ide-drive,drive=hd0 \
    \
    -drive id=cd0,readonly,media=cdrom,cache=writeback,if=none,file=RHEL-7.3-20161019.0-Server-x86_64-dvd1.iso \
    -device ide-cd,drive=cd0 \
    -monitor stdio \
    -vnc :1

(qemu) system_reset 

result:

(qemu) cli: line 9: 25351 Segmentation fault      (core dumped) /usr/libexec/qemu-kvm -m 2048 -smp 2 -drive file=test.qcow2,werror=stop,rerror=stop,cache=writeback,id=hd0,if=none -device ide-drive,drive=hd0 -drive id=cd0,readonly,media=cdrom,cache=writeback,if=none,file=RHEL-7.3-20161019.0-Server-x86_64-dvd1.iso -device ide-cd,drive=cd0 -monitor stdio -vnc :1


Verified this bug with qemu-kvm-1.5.3-126.el7_3.1.x86_64.

qemu-kvm process works well. 

So, This bug is fixed.

Comment 8 errata-xmlrpc 2017-01-17 18:08:27 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-2017-0071.html