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[Chris J Arges <1274444@xxxxxxxxxxxxxxxxxx>]

Ok here is the workaround:
in /etc/rsyslog.conf we need to add:

$KLogPermitNonKernelFacility on

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https://bugs.launchpad.net/bugs/1274444

Title:
  echo string to /dev/kmsg fails to appear on /var/log/syslog

Status in “linux” package in Ubuntu:
  In Progress
Status in “rsyslog” package in Ubuntu:
  New

Bug description:
  [Impact]
  In the precise 3.2 series kernel writing strings to /dev/kmsg appears and dmesg and /var/log/syslog, in 3.5 series kernel this does not happen properly even with the equivalent userspace packages.

  I've already done a coarse bisect,
  works v3.4
  fails in v3.5-rc1

  [Test Case]
  Run the following script as root:

  #!/bin/bash
  STRING=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | head -c 32)
  > /var/log/syslog
  echo $STRING > /dev/kmsg
  sleep 5
  grep $STRING /var/log/syslog
  # This should return 0.

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