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Bug 1185737 - qemu-kvm hang when boot with usb-host and sandbox was enabled
Summary: qemu-kvm hang when boot with usb-host and sandbox was enabled
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.1
Hardware: Unspecified
OS: Unspecified
medium
high
Target Milestone: rc
: ---
Assignee: Gerd Hoffmann
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-01-26 08:12 UTC by mazhang
Modified: 2016-09-20 04:41 UTC (History)
6 users (show)

Fixed In Version: qemu-kvm-1.5.3-92.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-11-19 04:58:02 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
system calls (86.59 KB, text/plain)
2015-01-26 08:13 UTC, mazhang 		no flags Details
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:2213 0 normal SHIPPED_LIVE qemu-kvm bug fix and enhancement update 2015-11-19 08:16:10 UTC

Description mazhang 2015-01-26 08:12:01 UTC 
Description of problem:
qemu-kvm hang when boot with usb-host and sandbox was enabled

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

Host:
qemu-kvm-1.5.3-86.el7.x86_64
3.10.0-225.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1.Start qemu-kvm with following command line:
/usr/libexec/qemu-kvm -M pc -monitor stdio -vnc :0 -sandbox on -usb -device usb-host,id=hostdev0
2.
3.

Actual results:
qemu-kvm hang.

[root@dhcp-11-16 ~]# ps ax |grep qemu
12383 pts/3    Zl+    0:00 [qemu-kvm] <defunct>
12402 pts/2    S+     0:00 grep --color=auto qemu


Expected results:
qemu-kvm works well.

Additional info:
qemu-kvm-rhev-2.1.2-20.el7.x86_64 can't hit this problem.
Comment 1 mazhang 2015-01-26 08:13:21 UTC 
Created attachment 984125 [details]
system calls
Comment 3 mazhang 2015-01-26 08:46:15 UTC 
qemu-kvm-1.5.3-60.el7.x86_64       fail
qemu-kvm-rhev-2.1.2-22.el7.x86_64  pass
Comment 4 juzhang 2015-01-26 09:08:57 UTC 
According to comment3, this bz is not a regression.
Comment 5 mazhang 2015-01-27 06:04:46 UTC 
Following command line also hit qemu-kvm hang.
qemu-kvm-1.5.3-60.el7.x86_64

Start qemu-kvm with sandbos enabled, then query usbhost in hmp.
/usr/libexec/qemu-kvm -M pc -monitor stdio -vnc :0 -sandbox on
(qemu) info usbhost

[root@dhcp-8-204 ~]# ps ax |grep qemu
16703 pts/0    Zl+    0:03 [qemu-kvm] <defunct>
16744 pts/1    S+     0:00 grep --color=auto qemu
Comment 7 Gerd Hoffmann 2015-04-30 10:32:54 UTC 
patch posted.
Comment 8 Miroslav Rezanina 2015-06-16 18:01:15 UTC 
Fix included in qemu-kvm-1.5.3-92.el7
Comment 10 mazhang 2015-07-03 02:07:14 UTC 
Reproduce this bug on qemu-kvm-1.5.3-86.el7

Host:
qemu-kvm-1.5.3-86.el7
3.10.0-287.el7.x86_64

Steps:
1. Start qemu-kvm with sandbos enabled, then query usbhost in hmp.
# /usr/libexec/qemu-kvm -M pc -monitor stdio -vnc :0 -sandbox on -usb -device usb-host,id=hostdev0

Result:
qemu-kvm hang.

# ps ax |grep qemu
 1123 pts/0    Zl+    0:00 [qemu-kvm] <defunct>
 1129 pts/1    S+     0:00 grep --color=auto qemu


Verify this bug on qemu-kvm-1.5.3-92.el7

# /usr/libexec/qemu-kvm -M pc -monitor stdio -vnc :0 -sandbox on -usb -device usb-host,id=hostdev0
QEMU 1.5.3 monitor - type 'help' for more information
(qemu) info usbhost 
  Bus 1, Addr 3, Port 1.1, Speed 12 Mb/s
    Class 00: USB device 0624:0013, AVOCENT K/M         
  Bus 1, Addr 4, Port 1.2, Speed 12 Mb/s
    Class 00: USB device 0624:0815, AVO VMC-USB MPUIQ
(qemu) info status 
VM status: running

# ps ax |grep qemu
 1186 pts/0    Sl+    0:13 /usr/libexec/qemu-kvm -M pc -monitor stdio -vnc :0 -sandbox on -usb -device usb-host,id=hostdev0
 1195 pts/1    S+     0:00 grep --color=auto qemu

qemu-kvm works well, this bug has been fixed.
Comment 12 errata-xmlrpc 2015-11-19 04:58:02 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-2015-2213.html
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