Bug 1373276 – DHCP timeout due to race condition calling nm-dhcp-helper

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Bug 1373276 - DHCP timeout due to race condition calling nm-dhcp-helper

Summary:	DHCP timeout due to race condition calling nm-dhcp-helper

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	NetworkManager (Show other bugs)
Sub Component:
Version:	7.3
Hardware:	x86_64 Linux

Priority	unspecified Severity high
Target Milestone:	rc
Target Release:	---
Assigned To:	Thomas Haller
QA Contact:	Desktop QE
Docs Contact:

URL:
Whiteboard:
Keywords:	OtherQA

Depends On:	1372854
Blocks:
	Show dependency tree / graph

Reported:	2016-09-05 13:10 EDT by Thomas Haller
Modified:	2016-11-03 15:30 EDT (History)
CC List:	14 users (show)

See Also:
Fixed In Version:	NetworkManager-1.4.0-7.el7
Doc Type:	If docs needed, set a value
Doc Text:
Story Points:	---
Clone Of:	1372854
Environment:
Last Closed:	2016-11-03 15:30:02 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:2581	normal	SHIPPED_LIVE	Low: NetworkManager security, bug fix, and enhancement update	2016-11-03 08:08:07 EDT

Groups: None (edit)

Description Thomas Haller 2016-09-05 13:10:18 EDT

+++ This bug was initially created as a clone of Bug #1372854 +++

when using dhclient DHCP plugin, the nm-dhcp-helper notifies NetworkManager about lease events by emitting a D-Bus signal "Event".

Due to a race, NetworkManager might miss the signal and DHCP times out.

Fix that, by instead using a D-Bus method "Notify".


More details in bug 1372854.

Comment 2 Thomas Haller 2016-09-07 18:29:48 EDT

branch merged upstream:


master: https://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=42519abdbf6c9778a9f9421e704181b22d4df684

nm-1-4: https://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=0b182d0f450e7caac85096bddbeeef65bdabdd6a

Comment 5 Vladimir Benes 2016-09-15 09:19:26 EDT

This was verified by reporter in https://bugzilla.redhat.com/show_bug.cgi?id=1372854#c16.

Comment 7 errata-xmlrpc 2016-11-03 15:30:02 EDT

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/RHSA-2016-2581.html

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