[4.5.0.16] Closing terminal while viewing journalctl leaves "more" process consuming CPU

Bug Reports
#1

REPRODUCIBILITY: 100%
OS VERSION: 4.5.0.16
HARDWARE: Xperia 10 II
UI LANGUAGE: Finnish, not relevant
REGRESSION: Yes, haven’t noticed this in 4.4 versions for instance

DESCRIPTION:

It seems that when viewing journalctl using the Terminal application, one can get processes to hang on when closing the Terminal from UI. Especially on this particular case program / process “more” is left running and consuming CPU quite significantly. I’m not sure whether this is related to only journalctl.

PRECONDITIONS:

Terminal application is required which presumably (?) requires enabling development tools or similar. Requires setting the root password for devel-su.

STEPS TO REPRODUCE:

  1. Open terminal application
  2. Run devel-su
  3. Run journalctl
  4. Close the terminal while still running journalctl
  5. View processes and notice the “more”

EXPECTED RESULT:

I suspect that killing / closing the terminal application should also kill all the other processes that it had started. No processes or programs opened by the Terminal app should be left running in the background when closing the application.

ACTUAL RESULT:

Process / program called “more” is left running in the background consuming CPU. Only way to get rid off it is to either manually kill the process or reboot.

MODIFICATIONS:

None

ADDITIONAL INFORMATION:

Example of having several “more” processes when viewing on Lighthouse application. On this case I was repeatedly able to reproduce the bug and every time new “more” process was introduced.

more_processes
more_processes1080×2520 211 KB

1 Like
#2

From brief tests, I can confirm there were no more processes hanging in 4.4.

2 Likes
#3

Maybe changing the pager application can serve as a workaround.

And: which is the more program? Busybox or util-linux?

#4

Currently my work around is to exit journalctl before closing the Terminal app itself. I’m not familiar how one changes the pager application and I’m probably not too interested in doing that anyway.

For the latter question I don’t have any answer if it even was targeted to me in the first place. I have no modifications so they are Sailfish provided defaults.