systemd boots system offline ("Breaking ordering cycle by deleting job network.target/stop")
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
systemd (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
Steps to reproduce:
1. Install Ubuntu 16.04 LTS
2. Install LTSP server (dnsmasq as proxy DHCP and tftp; NBD, SSH)
3. Reboot.
4. Boot system
Expected results:
* system boots to online
Actual results:
* system boots offline; it's a security vulnerability as denial of service
Interesting messages from syslog:
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network-
Oct 19 15:25:56 server systemd[1]: network.target: Job network.target/stop deleted to break ordering cycle starting with network-
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu19
ProcVersionSign
Uname: Linux 4.4.0-93-generic i686
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: i386
CurrentDesktop: MATE
Date: Thu Oct 26 13:50:49 2017
InstallationDate: Installed on 2016-04-21 (552 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release i386 (20160420.1)
MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/09/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: FD
dmi.board.
dmi.board.name: F2A55M-DS2
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: To be filled by O.E.M.
dmi.product.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
Changed in systemd (Ubuntu): | |
status: | New → Won't Fix |
Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.