Bug 1887349

Summary:	libnmstate.show() crashes when OVS bridge, port and internal interface have the same name and managed by NM [rhel-8.3.0.z]
Product:	Red Hat Enterprise Linux 8	Reporter:	RHEL Program Management Team <pgm-rhel-tools>
Component:	nmstate	Assignee:	Edward Haas <edwardh>
Status:	CLOSED ERRATA	QA Contact:	Mingyu Shi <mshi>
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	8.2	CC:	cnv-qe-bugs, danken, dholler, edwardh, ferferna, fge, jiji, jishi, lmiksik, mcornea, myakove, network-qe, phoracek, till, yjoseph
Target Milestone:	rc	Keywords:	ZStream
Target Release:	8.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	nmstate-0.3.4-13.el8_3	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1886334	Environment:
Last Closed:	2020-11-04 04:27:46 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:	1886334, 1887350, 1887996, 1887997
Bug Blocks:

Comment 5 Gris Ge 2020-10-14 16:52:35 UTC

To minimize the changed code, this bug only fix the crash of `libnmstate.show()` or `nmstatectl show` on system with
duplicate ovs interface/bridge name. The output will only contains the ovs bridge interface.
CNV does not require nmstate's information on OVS for RHEL 8.3.

And RHEL 8.4 is tracking the effort at bug https://bugzilla.redhat.com/show_bug.cgi?id=1865733

Comment 12 Mingyu Shi 2020-10-21 12:03:46 UTC

Reproduced with nmstate-0.3.4-12.el8.noarch, reproducer:

nmcli conn add type ovs-bridge conn.interface bridge0
nmcli conn add type ovs-port conn.interface bridge0 master bridge0
nmcli conn add type ovs-interface slave-type ovs-port conn.interface bridge0 master bridge0
# In case that dhcp timeout causes NM deletes ovs-interface, this could be run(or set NM timeout property to unlimited):
nmcli conn modify ovs-slave-bridge0-1 ipv4.method disabled ipv6.method disabled
nmstatectl show

Verified with versions:
nmstate-0.3.4-13.el8_3.noarch
NetworkManager-1.26.0-8.el8.x86_64
DISTRO=RHEL-8.3.0-20201009.2
Linux hp-dl388g8-04.rhts.eng.pek2.redhat.com 4.18.0-240.el8.x86_64 #1 SMP Wed Sep 23 05:13:10 EDT 2020 x86_64 x86_64 x86_64 GNU/Linux
python3-openvswitch2.13-2.13.0-39.el8fdp.x86_64
openvswitch2.13-2.13.0-39.el8fdp.x86_64
openvswitch-selinux-extra-policy-1.0-22.el8fdp.noarch

Comment 16 errata-xmlrpc 2020-11-04 04:27:46 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 (nmstate bug fix and enhancement update), 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-2020:4861