Bug 616703 – qemu-kvm core dump with virtio-serial-pci max-port greater than 31

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Bug 616703 - qemu-kvm core dump with virtio-serial-pci max-port greater than 31

Summary:	qemu-kvm core dump with virtio-serial-pci max-port greater than 31

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	qemu-kvm (Show other bugs)
Sub Component:
Version:	6.1
Hardware:	All Linux

Priority	low Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Amit Shah
QA Contact:	Virtualization Bugs
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:	580953
	Show dependency tree / graph

Reported:	2010-07-21 04:52 EDT by Keqin Hong
Modified:	2011-05-19 08:46 EDT (History)
CC List:	7 users (show)

See Also:
Fixed In Version:	qemu-kvm-0.12.1.2-2.114.el6
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2011-05-19 07:31:13 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:0534	normal	SHIPPED_LIVE	Important: qemu-kvm security, bug fix, and enhancement update	2011-05-19 07:20:36 EDT

Groups: None (edit)

Description Keqin Hong 2010-07-21 04:52:30 EDT

Description of problem:
qemu-kvm got core-dump with virtio-serial-pci max-port greater than 31.

Version-Release number of selected component (if applicable):
qemu-kvm-0.12.1.2-2.91.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Boot VM with "-device virtio-serial-pci,id=virtio-serial0,max_ports=32,vectors=4,bus=pci.0"
  
Actual results:
Aborted (core dumped)


Expected results:
no core dumps. qemu-kvm should prompt for maximum supported ports, then exit normally.

Additional info:
(gdb) bt
#0  0x00000033da4329b5 in raise () from /lib64/libc.so.6
#1  0x00000033da434195 in abort () from /lib64/libc.so.6
#2  0x0000000000577b06 in virtio_add_queue (vdev=0x4c43, queue_size=19523, handle_output=0x6)
    at /usr/src/debug/qemu-kvm-0.12.1.2/hw/virtio.c:597
#3  0x0000000000420f78 in virtio_serial_init (dev=<value optimized out>, max_nr_ports=36)
    at /usr/src/debug/qemu-kvm-0.12.1.2/hw/virtio-serial-bus.c:772
#4  0x0000000000420d5b in virtio_serial_init_pci (pci_dev=0x12608d0) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/virtio-pci.c:616
#5  0x0000000000419663 in pci_qdev_init (qdev=0x12608d0, base=0x844bd0) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/pci.c:1486
#6  0x00000000004c04b8 in qdev_init (dev=0x12608d0) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/qdev.c:275
#7  0x00000000004c0839 in qdev_device_add (opts=0x11adea0) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/qdev.c:250
#8  0x0000000000408ec9 in device_init_func (opts=<value optimized out>, opaque=<value optimized out>)
    at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4784
#9  0x000000000047588a in qemu_opts_foreach (list=<value optimized out>, func=0x408ec0 <device_init_func>, opaque=0x0, 
    abort_on_failure=<value optimized out>) at qemu-option.c:903
#10 0x000000000040d850 in main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>)
    at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:6238

Comment 2 RHEL Product and Program Management 2010-07-21 05:19:40 EDT

This issue has been proposed when we are only considering blocker
issues in the current Red Hat Enterprise Linux release.

** If you would still like this issue considered for the current
release, ask your support representative to file as a blocker on
your behalf. Otherwise ask that it be considered for the next
Red Hat Enterprise Linux release. **

Comment 3 Amit Shah 2010-07-21 05:40:53 EDT

Thanks, fix submitted upstream.

Not a blocker for 6.0 so moving to 6.1.

Comment 8 Golita Yue 2011-01-19 05:00:22 EST

Verified in qemu-kvm-0.12.1.2-2.120.el6.x86_64, this bug fixed. 

The following note display when boot up with max_ports=32:

qemu-kvm: -device virtio-serial-pci,id=virtio-serial0,max_ports=32,bus=pci.0,addr=0x4: maximum ports supported: 31
qemu-kvm: -device virtio-serial-pci,id=virtio-serial0,max_ports=32,bus=pci.0,addr=0x4: Device 'virtio-serial-pci' could not be initialized

Comment 9 Miya Chen 2011-03-17 06:35:38 EDT

move to verified based on comment#8

Comment 10 errata-xmlrpc 2011-05-19 07:31:13 EDT

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0534.html

Comment 11 errata-xmlrpc 2011-05-19 08:46:37 EDT

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0534.html

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