** No longer affects: linux (Ubuntu Precise)
** No longer affects: linux (Ubuntu Trusty)
** Changed in: rsyslog (Ubuntu Precise)
Assignee: (unassigned) => Chris J Arges (arges)
** Changed in: rsyslog (Ubuntu Trusty)
Assignee: (unassigned) => Chris J Arges (arges)
** Changed in: rsyslog (Ubuntu Precise)
Importance: Undecided => Medium
** Changed in: rsyslog (Ubuntu Trusty)
Importance: Undecided => Medium
** Changed in: rsyslog (Ubuntu Precise)
Status: New => In Progress
** Changed in: rsyslog (Ubuntu Trusty)
Status: New => In Progress
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Packages, which is subscribed to linux in Ubuntu.
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:
Invalid
Status in “rsyslog” package in Ubuntu:
In Progress
Status in “rsyslog” source package in Precise:
In Progress
Status in “rsyslog” source package in Trusty:
In Progress
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.
This is because the default facility number in the kernel has changed
from 0 to 1 for user-space generated kmsg entries. Because of this;
rsyslog (or any affected sysloggers) need to accept non-kernel
facility numbers.
This change was introduced by this commit (in the linux kernel):
7ff9554bb578ba02166071d2d487b7fc7d860d62
[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 # this isn't necessary
echo $STRING > /dev/kmsg
sleep 5
grep $STRING /var/log/syslog
# This should return 0.
[Regression Potential]
Any scripts that rely on syslog output may finally see output produced by
packages like init/systemd show up in syslog. This changes the default
rsyslog.conf file settings but isn't a code change.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1274444/+subscriptions
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