+++ This bug was initially created as a clone of Bug #1420505 +++
Description of problem:
When LogLevel=debug and LogTarget=kmsg, systemd will send the message
"Executing: /path/to/exececutable" to the socket that is connected to
the remote client in a socket-based activation unit.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Set LogLevel=debug and LogTarget=kmsg, either through system.conf
file or the kernel command-line (as described in
2. Enable a socket-based service, like cups-lpd.
3. Use telnet to connect to the socket based service.
# telnet 127.0.0.1 515
Connected to 127.0.0.1.
Escape character is '^]'.
The "Executing: /usr/lib/cups/daemon/cups-lpd" message should not be
This is causing a real-world problem with remote LPD clients
connecting to RHEL. The "Executing..." message violates the LPD
protocol as described in RFC 1179.
I reproduced this problem in Fedora 24 with systemd-229-16.fc24.x86_64:
# telnet localhost 515
Connected to localhost.
Escape character is '^]'.
cups-lpd@1-::1:515-::1:50374.service: Executing: /usr/lib/cups/daemon/cups-lpd
Submitted bug upstream: https://github.com/systemd/systemd/issues/5401
This has been fixed in systemd release 233. A backport may be appropriate.
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