[Bug 911753] [NEW] Wrong directive in config file cause server to crash

[Yongzhi Pan]

Public bug reported:

I added "PermitUserEnvironment Yes" in sshd_config file, and the server
cannot start at all. Every attempt to start the server results in such
error messages at the end of this report.

The reason is I used 'Yes', which should be 'yes'. It is hard to find,
since when starting the server, it seems OK:

$ sudo /etc/init.d/ssh start
[sudo] password for tux: 
Rather than invoking init scripts through /etc/init.d, use the service(8)
utility, e.g. service ssh start

Since the script you are attempting to invoke has been converted to an
Upstart job, you may also use the start(8) utility, e.g. start ssh
ssh start/running, process 5780

It does not report it as a config file error.

--------------

Syslog message:

Jan  4 21:21:16 Neverland kernel: [ 5271.135175] init: ssh main process (5780) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.135236] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.147909] init: ssh main process (5783) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.147950] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.155092] init: ssh main process (5786) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.155127] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.163840] init: ssh main process (5789) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.163873] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.171317] init: ssh main process (5792) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.171348] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.178720] init: ssh main process (5795) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.178764] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.186037] init: ssh main process (5798) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.186080] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.194536] init: ssh main process (5801) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.194579] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.203290] init: ssh main process (5804) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.203331] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.210991] init: ssh main process (5807) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.211026] init: ssh main process ended, respawning
Jan  4 21:21:16 Neverland kernel: [ 5271.217402] init: ssh main process (5810) terminated with status 255
Jan  4 21:21:16 Neverland kernel: [ 5271.217424] init: ssh respawning too fast, stopped

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: openssh-server 1:5.8p1-7ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Wed Jan  4 21:20:43 2012
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
SSHDConfig: Error: command ['gksu', '-D', 'Apport', '--', '/usr/sbin/sshd', '-T'] failed with exit code 255:
SourcePackage: openssh
UpgradeStatus: Upgraded to oneiric on 2011-10-14 (81 days ago)

** Affects: openssh (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug oneiric running-unity

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Title:
  Wrong directive in config file cause server to crash

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