Lightdm memory leak after F41 upgrade

Apart from a few common issues, the latest F41 upgrade went well. But after a few days, I noticed a recurrent high memory consumption usage, almost double more than usual (~35% to 64% and slowly increasing). I could see that the Xorg process was eating 29% on its own after 2 hours with light work until it finally gave out (100% mem and swap, systemd-oomd in murder mode ^^, xfce session frozen).
I have narrowed it down to lightdm, switched to sddm and the problem is gone … but that’s part of the issue ^^’ :

  • I can’t find any logs that would explain how lightdm was eating at my memory
  • I wanted to file a bug report, but with what then ?
  • chatgpt is not helping much, d***d it
    Any idea please where (and maybe also what) I should start looking for ?
    Thanks !

Well, I hit a wall there : it took longer, but I’m back with my memory flying off the shelves. So, lightdm was not the culprit after all.
#back-to-analysing-some-logs-v1.2

with the lightdm bug tracker? Bug List

do you know utilities like top, htop, btop to analyze memory usage by process or user?
could also use the ps command with a bit of sorting and filtering:

ps aux | sort -rnk 4 | head -5

or

ps aux | head -1; ps aux | sort -rnk 4 | head -5

Little misunderstanding here, I wasn’t referring to where I should report the bug, I was referring to the fact that I can’t provide data since I can’t find any. I can’t exactly file the bug with just “There’s a memory leak there” and … voilà ! (especially since I think now that I was wrong anyway about lightdm ^^)

Thank you anyway.

For now I’m tracking the memory usage with a script running smem, executed every hour :
smem -r -k -s uss -p -a >> chk_mem.txt
So far so good since this night 1:30 AM after restarting sddm, but I didn’ t do much today on this machine.