Bug 1428347

Summary:	reboot hangs on rhel6 machine types (~1/20 times)
Product:	Red Hat Enterprise Linux 7	Reporter:	Dr. David Alan Gilbert <dgilbert>
Component:	seabios	Assignee:	Dr. David Alan Gilbert <dgilbert>
Status:	CLOSED ERRATA	QA Contact:	FuXiangChun <xfu>
Severity:	unspecified	Docs Contact:
Priority:	high
Version:	7.4	CC:	chayang, dgilbert, hhuang, jkortus, juzhang, knoel, michen, mrezanin, mtessun, tpelka, virt-maint, xfu
Target Milestone:	rc	Keywords:	ZStream
Target Release:	7.4
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	seabios-1.10.2-2.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1440706 (view as bug list)		Environment:
Last Closed:	2017-08-01 17:44:06 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:	1395265, 1401400, 1440706

Description Dr. David Alan Gilbert 2017-03-02 11:35:42 UTC

Description of problem:
(Split out of 1411275)
Repeatedly rebooting a rhel6 machine type guest will result in a hang about 1 in 20 or so times.

Version-Release number of selected component (if applicable):


How reproducible:
~1/20 times

Steps to Reproduce:
1. Take a 6.9 guest
2. Start it with:
/usr/libexec/qemu-kvm \
-name rhel7 \
-S -machine rhel6.6.0,accel=kvm,usb=off,smm=off \
-realtime mlock=off \
-cpu Opteron_G3 \
-sandbox off \
-m 7680   \
-smp 1, \
-uuid 49a3438a-70a3-4ba8-92ce-3a05e0934608 \
-no-user-config \
-nodefaults \
-rtc base=utc,driftfix=slew \
-global kvm-pit.lost_tick_policy=discard \
-no-hpet \
-no-shutdown \
-global PIIX4_PM.disable_s3=1 \
-global PIIX4_PM.disable_s4=1 \
-boot order=c,menu=on,splash-time=3000,strict=on \
-drive file=rhel-guest-image-6.9-28.x86_64.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,serial=f65effa5-90a6-47f2-8487-a9f64c95d4f5,cache=none,discard=unmap,werror=stop,rerror=stop,aio=threads \
-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x9,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
-chardev stdio,mux=on,id=mon -mon chardev=mon,mode=readline --device isa-serial,chardev=mon \
-k en-us \
-device VGA \
-chardev file,id=bioslog,path=bioslog \
-device isa-debugcon,iobase=0x402,chardev=bioslog \
$*

3. repeatedly log into the guest and type 'reboot'

Actual results:


Expected results:


Additional info:
Already debugged to the 'TimerLast' variable overlaying the code in Seabios and getting incremented before boot.

Comment 2 Dr. David Alan Gilbert 2017-03-13 15:54:11 UTC

Fixed in upstream commit c68aff57ce317d9f2d69d20eba893a10d964f316

Comment 5 Miroslav Rezanina 2017-03-30 10:39:18 UTC

Fix included in seabios-1.10.2-2.el7

Comment 11 Radim Krčmář 2017-04-12 13:11:31 UTC

*** Bug 1397296 has been marked as a duplicate of this bug. ***

Comment 12 FuXiangChun 2017-04-27 10:11:34 UTC

According to comment0,QE tried to reproduce with different host & unfix seabios seabios-1.9.1-4.el7.x86_64. and Guest reboot continuously for 2 hours. Guest still works well. So, see if QE can do some sanity test to verify this bug? e.g Guest reboot continuously with fixed seabios version(seabios-1.10.2-2.el7) for 24 hours. If guest still works well then we think this bug is fixed.

Comment 13 Dr. David Alan Gilbert 2017-04-27 10:16:59 UTC

(In reply to FuXiangChun from comment #12)
> According to comment0,QE tried to reproduce with different host & unfix
> seabios seabios-1.9.1-4.el7.x86_64. and Guest reboot continuously for 2
> hours. Guest still works well. So, see if QE can do some sanity test to
> verify this bug? e.g Guest reboot continuously with fixed seabios
> version(seabios-1.10.2-2.el7) for 24 hours. If guest still works well then
> we think this bug is fixed.

Yes, if it's rebooting well then that's fine; it doesn't need 24h, 100 reboots should do.

Comment 14 FuXiangChun 2017-04-28 02:16:49 UTC

Verified bug with fixed seabios version seabios-1.10.2-2.el7.x86_64. >100 reboots.  guest works well. so set this bug as verified.

Comment 15 Radim Krčmář 2017-06-06 14:41:41 UTC

*** Bug 1386239 has been marked as a duplicate of this bug. ***

Comment 16 errata-xmlrpc 2017-08-01 17:44:06 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/RHBA-2017:1855