Bug 639036

Summary:	<sys-apps/dbus-1.10.24: dbus-daemon blocks waiting for entropy with dev-libs/expat >=2.2.1 <2.2.3
Product:	Gentoo Linux	Reporter:	Hasso Tepper <hasso.tepper>
Component:	Current packages	Assignee:	Freedesktop bugs <freedesktop-bugs>
Status:	RESOLVED OBSOLETE
Severity:	normal	CC:	sping
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:	641288
Bug Blocks:

Description Hasso Tepper 2017-11-28 08:50:27 UTC

sys-apps/dbus 1.10.18, which is a current stable, may block boot waiting for entropy due to dev-libs/expat being more strict from version 2.2.1 (which is a current stable) about quality of random used to salt hashing algorithms. In case of systemd (where most os systemd daemons including netword and logind require dbus) and virtual machines (where entropy might be very low) it means that machine may fail to boot at all.

Upstream bug and patch:

https://bugs.freedesktop.org/show_bug.cgi?id=101858

Reproducible: Sometimes

Steps to Reproduce:
Depends on entropy available at boot time and is really critical in case of low entropy virtual machines and systemd.

Comment 1 Sebastian Pipping gentoo-dev

2017-12-18 21:09:15 UTC

dbus >=1.10.24 has a fix, according to:
* https://bugs.freedesktop.org/show_bug.cgi?id=101858#c10
* https://cgit.freedesktop.org/dbus/dbus/tree/NEWS?h=dbus-1.10#n13

Expat >=2.2.3 has a fix in itself, too.  The related pull request:
https://github.com/libexpat/libexpat/pull/92/files

Comment 2 Sebastian Pipping gentoo-dev

2022-09-22 16:00:49 UTC

I'll close this as obsolete since all versions of Expat in Gentoo today are >=2.4.6.  Please re-open as needed.