Bug#885766: X desktop crash when opening a new tab

[Daniel Pocock]

Package: firefox
Version: 57.0.1-1

I pressed Ctrl-T to open a new tab and the whole Xorg session restarted.

Looking at journalctl -n 10000 I found memory issues (log below)

Looking at Ganglia (chart attached), I found that the system was using
10GB out of 16GB, so there was 6GB free RAM.  After logging in again, I
only start Firefox and Thunderbird and its using 4GB again, as
demonstrated in the chart.



19:02:45 host1 evolution.desktop[12511]: Memory pressure relief: Total:
res = 12349440/12349440/0, res+swap = 0/0/0
19:03:15 host1 evolution.desktop[12511]: Memory pressure relief: Total:
res = 12349440/12349440/0, res+swap = 0/0/0
19:03:45 host1 evolution.desktop[12511]: Memory pressure relief: Total:
res = 12349440/12349440/0, res+swap = 0/0/0
19:04:15 host1 evolution.desktop[12511]: Memory pressure relief: Total:
res = 12349440/12349440/0, res+swap = 0/0/0
19:04:45 host1 evolution.desktop[12511]: Memory pressure relief: Total:
res = 12349440/12349440/0, res+swap = 0/0/0
19:04:45 host1 systemd[1]: Started Run anacron jobs.
19:04:45 host1 anacron[2100]: Anacron 2.3 started on 2017-12-29
19:04:45 host1 anacron[2100]: Normal exit (0 jobs run)
19:04:45 host1 systemd[1]: anacron.timer: Adding 2min 33.276752s random
time.
19:05:01 host1 CRON[2110]: pam_unix(cron:session): session opened for
user root by (uid=0)
19:05:01 host1 CRON[2111]: (root) CMD (command -v debian-sa1 > /dev/null
&& debian-sa1 1 1)
19:05:01 host1 CRON[2110]: pam_unix(cron:session): session closed for
user root
19:05:15 host1 evolution.desktop[12511]: Memory pressure relief: Total:
res = 12349440/12349440/0, res+swap = 0/0/0
19:05:24 host1 /usr/lib/gdm3/gdm-x-session[3173]: intel_do_flush_locked
failed: Cannot allocate memory
19:05:24 host1 gnome-terminal-[7552]: gnome-terminal-server: Fatal IO
error 11 (Resource temporarily unavailable) on X server :1.
19:05:24 host1 systemd[3155]: gnome-terminal-server.service: Main
process exited, code=exited, status=1/FAILURE
19:05:24 host1 org.a11y.atspi.Registry[3257]: XIO:  fatal IO error 11
(Resource temporarily unavailable) on X server ":1"
19:05:24 host1 org.a11y.atspi.Registry[3257]:       after 66481 requests
(66481 known processed) with 0 events remaining.
19:05:24 host1 libreoffice-writer.desktop[17526]: X IO Error
19:05:24 host1 systemd[3155]: gnome-terminal-server.service: Unit
entered failed state.
19:05:24 host1 polkitd(authority=local)[895]: Unregistered
Authentication Agent for unix-session:2 (system bus name :1.168, object
path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale
en_IE.UTF-8) (disconnected from bus)
19:05:24 host1 kerneloops-applet.desktop[3415]: kerneloops-applet: Fatal
IO error 11 (Resource temporarily unavailable) on X server :1.
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