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Bug 2148852

Summary:	Please backport [PATCH] teamd: stop iterating callbacks when a loop restart is requested
Product:	Red Hat Enterprise Linux 9	Reporter:	Lubomir Rintel <lrintel>
Component:	libteam	Assignee:	Xin Long <lxin>
Status:	CLOSED ERRATA	QA Contact:	LiLiang <liali>
Severity:	high	Docs Contact:
Priority:	high
Version:	9.1	CC:	lrintel, mleitner, network-qe
Target Milestone:	rc	Keywords:	Triaged
Target Release:	9.2	Flags:	pm-rhel: mirror+
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libteam-1.31-16.el9_1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	2148855 (view as bug list)		Environment:
Last Closed:	2023-01-23 15:23:31 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:	2148855

Description Lubomir Rintel 2022-11-28 07:28:20 UTC

Please backport the following upstream commit:

ffc6a52 teamd: stop iterating callbacks when a loop restart is requested

https://github.com/jpirko/libteam/commit/ffc6a52bd285a476b547312012078af69220574b

This fixes a crash in a handover from initrd to real root that disrupts NetworkManager CI testing.

Thank you!

Comment 1 LiLiang 2022-11-28 08:16:00 UTC

Hi Lubomir,

Can you paste the reproducer?

I didn't find it at https://github.com/jpirko/libteam/commit/ffc6a52bd285a476b547312012078af69220574b.

I tried "/usr/bin/teamd -o -n -U -D -N -t team0 -gg", but can't reproduce this bug.

BR,
Liang Li.

Comment 2 Lubomir Rintel 2022-12-02 12:37:37 UTC

(In reply to LiLiang from comment #1)
> Hi Lubomir,
> 
> Can you paste the reproducer?
> 
> I didn't find it at
> https://github.com/jpirko/libteam/commit/
> ffc6a52bd285a476b547312012078af69220574b.
> 
> I tried "/usr/bin/teamd -o -n -U -D -N -t team0 -gg", but can't reproduce
> this bug.
> 
> BR,
> Liang Li.

This is fairly difficult to reproduce.
The crash happens when the D-Bus daemon is killed off.

fpokryvk of NetworkManager QE can certainly help you reproduce the problem, they got a test.

Comment 4 Xin Long 2022-12-07 21:39:57 UTC

https://gitlab.com/redhat/centos-stream/rpms/libteam/-/merge_requests/14

Comment 7 LiLiang 2022-12-08 02:23:18 UTC

As this bug is difficult to reproduce, I did sanity check only.

[root@dell-per740-17 ~]# rpm -q teamd
teamd-1.31-16.el9_1.x86_64
[root@dell-per740-17 ~]# rpm -q libteam
libteam-1.31-16.el9_1.x86_64
[root@dell-per740-17 ~]# /usr/bin/teamd -o -n -U -D -N -t team0 -gg
Using team device "team0".
Using PID file "/var/run/teamd/team0.pid"
This program is not intended to be run as root.
Added loop callback: daemon, 0x557797e7ec70
Added loop callback: libteam_events, 0x557797e7ec70
Added loop callback: workq, 0x557797e7ec70
Failed to get team runner name from config.
Using default team runner "roundrobin".
usock: Using sockpath "/var/run/teamd/team0.sock"
Added loop callback: usock, 0x557797e7ec70
Added loop callback: dbus_dispatch, 0x557797e82ce0
Added loop callback: dbus_watch, 0x557797e806f0
Added loop callback: dbus_watch, 0x557797e80740
dbus: connected to 4ab40f239cac11dd49a69f1893864151 with name :1.321
<ifinfo_list>
 74: team0: a6:68:fc:b0:88:e7: 0 
</ifinfo_list>
<port_list>
</port_list>
<changed_option_list>
</changed_option_list>
Added loop callback: dbus_timeout, 0x557797e836f0
Removed loop callback: dbus_timeout, 0x557797e836f0
dbus: have name org.libteam.teamd.team0
1.31 successfully started.
<changed_option_list>
*mode roundrobin 
</changed_option_list>
Added loop callback: usock_acc_conn, 0x557797e84e40
usock: calling method "ConfigDump"
usock: calling method "ConfigDumpActual"
usock: calling method "StateDump"
Added loop callback: usock_acc_conn, 0x557797e83750
usock: calling method "ConfigDump"
usock: calling method "ConfigDumpActual"
usock: calling method "StateDump"
<ifinfo_list>
*74: team0: a6:68:fc:b0:88:e7: 0 
</ifinfo_list>
Added loop callback: usock_acc_conn, 0x557797e83800
usock: calling method "ConfigDump"
usock: calling method "ConfigDumpActual"
usock: calling method "StateDump"
usock: calling method "PortAdd"
port_devname "ens1f0np0"
ens1f0np0: Adding port (found ifindex "6").
<ifinfo_list>
*74: team0: a6:68:fc:b0:88:e7: 0 
</ifinfo_list>
<port_list>
*6: ens1f0np0: down 0Mbit HD 
</port_list>
ens1f0np0: Using implicit link watch.
ens1f0np0: Got link watch from port config.
Added loop callback: lw_ethtool_delay, 0x557797e86840
Removed loop callback: usock_acc_conn, 0x557797e83800
<ifinfo_list>
*74: team0: b8:59:9f:06:56:6c: 0 
*6: ens1f0np0: *b8:59:9f:06:56:6c: 74 
</ifinfo_list>
<changed_option_list>
*queue_id (port:ens1f0np0) 0 
*priority (port:ens1f0np0) 0 
*user_linkup_enabled (port:ens1f0np0) false 
*user_linkup (port:ens1f0np0) false 
*enabled (port:ens1f0np0) true 
</changed_option_list>
<port_list>
*6: ens1f0np0: up 25000Mbit FD 
</port_list>
ens1f0np0: ethtool-link went up.
<changed_option_list>
*priority (port:ens1f0np0) 0 
</changed_option_list>
<changed_option_list>
*user_linkup (port:ens1f0np0) true 
</changed_option_list>
usock: calling method "ConfigDumpActual"
Added loop callback: usock_acc_conn, 0x557797e83eb0
usock: calling method "ConfigDump"
usock: calling method "ConfigDumpActual"
usock: calling method "StateDump"
usock: calling method "PortAdd"
port_devname "ens1f1np1"
ens1f1np1: Adding port (found ifindex "7").
<ifinfo_list>
 74: team0: b8:59:9f:06:56:6c: 0 
 6: ens1f0np0: b8:59:9f:06:56:6c: 74 
</ifinfo_list>
<port_list>
*7: ens1f1np1: down 0Mbit HD 
 6: ens1f0np0: up 25000Mbit FD 
</port_list>
ens1f1np1: Using implicit link watch.
ens1f1np1: Got link watch from port config.
Added loop callback: lw_ethtool_delay, 0x557797e913c0
Removed loop callback: usock_acc_conn, 0x557797e83eb0
<changed_option_list>
*queue_id (port:ens1f1np1) 0 
*priority (port:ens1f1np1) 0 
*user_linkup_enabled (port:ens1f1np1) false 
*user_linkup (port:ens1f1np1) false 
*enabled (port:ens1f1np1) true 
</changed_option_list>
Removed loop callback: usock_acc_conn, 0x557797e84e40
<port_list>
*7: ens1f1np1: up 25000Mbit FD 
 6: ens1f0np0: up 25000Mbit FD 
</port_list>
ens1f1np1: ethtool-link went up.
<changed_option_list>
*priority (port:ens1f1np1) 0 
</changed_option_list>
<changed_option_list>
*user_linkup (port:ens1f1np1) true 
</changed_option_list>
Got SIGINT, SIGQUIT or SIGTERM.
Removed loop callback: lw_ethtool_delay, 0x557797e913c0
Removed loop callback: lw_ethtool_delay, 0x557797e86840
Exiting...
Removed loop callback: usock_acc_conn, 0x557797e83750
Removed loop callback: usock, 0x557797e7ec70
Removed loop callback: workq, 0x557797e7ec70
Removed loop callback: libteam_events, 0x557797e7ec70
Removed loop callback: daemon, 0x557797e7ec70
[root@dell-per740-17 ~]#

Comment 9 LiLiang 2022-12-09 00:37:11 UTC

verified https://beaker.engineering.redhat.com/recipes/13068480#tasks

Comment 13 errata-xmlrpc 2023-01-23 15:23:31 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 (libteam 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-2023:0344