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Bug 840054

Summary: guest fails with error: isa irq 4 already assigned when starting guest with more than two serial devices
Product: Red Hat Enterprise Linux 6 Reporter: RHEL Program Management <pm-rhel>
Component: qemu-kvmAssignee: Michal Novotny <minovotn>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: high Docs Contact:
Priority: urgent    
Version: 6.3CC: acathrow, amit.shah, areis, bsarathy, cww, dyasny, juzhang, michen, minovotn, mkenneth, nkim, pm-eus, rhod, shu, sluo, virt-maint, wquan, xigao
Target Milestone: rcKeywords: Patch, ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: qemu-kvm-0.12.1.2-2.295.el6_3.1 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-07-30 04:41:03 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: 771624    
Bug Blocks:    

Description RHEL Program Management 2012-07-13 15:07:23 UTC 
This bug has been copied from bug #771624 and has been proposed
to be backported to 6.3 z-stream (EUS).
Comment 5 Shaolong Hu 2012-07-18 03:27:08 UTC 
Reproduced with qemu-kvm-0.12.1.2-2.295.el6.x86_64:

[root@localhost ~]# /usr/libexec/qemu-kvm -serial unix:/tmp/u1,server,nowait -serial unix:/tmp/u2,server,nowait -serial unix:/tmp/u3,server,nowait
isa irq 4 already assigned

Verified on qemu-kvm-0.12.1.2-2.295.el6_3.1.x86_64:

[root@localhost ~]# /usr/libexec/qemu-kvm -serial unix:/tmp/u1,server,nowait -serial unix:/tmp/u2,server,nowait -serial unix:/tmp/u3,server,nowait -serial unix:/tmp/u4,server,nowait
VNC server running on `::1:5900'

[root@localhost ~]# /usr/libexec/qemu-kvm -serial unix:/tmp/u1,server,nowait -serial unix:/tmp/u2,server,nowait -serial unix:/tmp/u3,server,nowait -serial unix:/tmp/u4,server,nowait -serial unix:/tmp/u5,server,nowait
qemu: too many serial ports
Comment 8 errata-xmlrpc 2012-07-30 04:41:03 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.

http://rhn.redhat.com/errata/RHBA-2012-1121.html