Bug#843537: Fails to start dovecot/resolved with NAMESPACE spawning error

[Yuri D'Elia]

Package: systemd
Version: 232-1
Severity: serious

Upgrading systemd from 231-10 to either 232-1 or 232-2 breaks systemd-resolved
and dovecot on my system, with the following error when the units are started:

Nov  7 15:26:03 e systemd[18963]: systemd-resolved.service: Failed at step NAMESPACE spawning /bin/sh: Bad file descriptor
Nov  7 15:26:03 e systemd[1]: systemd-resolved.service: Control process exited, code=exited status=226
Nov  7 15:26:17 e systemd[1]: Stopping Dovecot IMAP/POP3 email server...
Nov  7 15:26:17 e systemd[19423]: dovecot.service: Failed at step NAMESPACE spawning /usr/bin/doveadm: Bad file descriptor
Nov  7 15:26:17 e systemd[1]: dovecot.service: Control process exited, code=exited status=226

On top of that, udevd.service also emits the following error:

Nov  7 15:26:33 e systemd[1]: systemd-udevd.service: Failed to set invocation ID on control group /system.slice/systemd-udevd.service, ignoring:      
Operation not supported

although the service is still started.

This is an i386 kvm image running linux 3.4.
Downgrading to 231-10 fixes the issue.


-- Package-specific info:

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (900, 'unstable'), (800, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.4.112-kvm-i386-20161024
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages systemd depends on:
ii  adduser         3.115
ii  libacl1         2.2.52-3
ii  libapparmor1    2.10.95-5
ii  libaudit1       1:2.6.7-1
ii  libblkid1       2.28.2-1
ii  libc6           2.24-5
ii  libcap2         1:2.25-1
ii  libcryptsetup4  2:1.7.3-1
ii  libgcc1         1:6.2.0-11
ii  libgcrypt20     1.7.3-2
ii  libgpg-error0   1.24-1
ii  libidn11        1.33-1
ii  libip4tc0       1.6.0-4
ii  libkmod2        23-1
ii  liblzma5        5.2.2-1.2
ii  libmount1       2.28.2-1
ii  libpam0g        1.1.8-3.3
ii  libseccomp2     2.3.1-2
ii  libselinux1     2.6-2
pn  libsystemd0     <none>
ii  mount           2.28.2-1
ii  util-linux      2.28.2-1

Versions of packages systemd recommends:
ii  dbus            1.10.12-1
pn  libpam-systemd  <none>

Versions of packages systemd suggests:
ii  policykit-1        0.105-17
pn  systemd-container  <none>
pn  systemd-ui         <none>

Versions of packages systemd is related to:
pn  dracut           <none>
pn  initramfs-tools  <none>
pn  udev             <none>

-- Configuration Files:
/etc/systemd/logind.conf changed [not included]
/etc/systemd/resolved.conf changed [not included]