Byzantium - phoc 0.7.0 - SIGTRAP in infinite loop

What problem did you encounter

When starting my Librem5 VM, Phoc is crashing with :

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/phoc -C /usr/share/phosh/phoc.ini -E bash -lc 'gnome-session --builtin'.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
#0  0x00007ff5595a0ca7 in g_log_structured_array () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#0  0x00007ff5595a0ca7 in g_log_structured_array () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff5595a10b5 in g_log_default_handler () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff5595a1309 in g_logv () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff5595a159f in g_log () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x000056407d8c6522 in phoc_server_constructed (object=0x56407e0d3810) at ../src/server.c:152
#5  0x00007ff559690638 in  () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6  0x00007ff559691b1d in g_object_new_with_properties () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7  0x00007ff5596925f1 in g_object_new () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x000056407d8c67fd in phoc_server_get_default () at ../src/server.c:224
#9  0x000056407d8c5f29 in main (argc=<optimized out>, argv=<optimized out>) at ../src/main.c:131

And thats what I get when I do 'sudo coredumpctl list' :

TIME                            PID   UID   GID SIG COREFILE  EXE
Sat 2021-03-27 13:34:43 UTC     748   114   124   6 present   /usr/bin/sddm-greeter
Sat 2021-03-27 13:34:44 UTC     524  1000  1000  11 present   /usr/bin/phoc
Sat 2021-03-27 13:34:50 UTC     915  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:34:55 UTC     943  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:01 UTC     971  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:07 UTC    1000  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:13 UTC    1031  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:18 UTC    1058  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:24 UTC    1085  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:30 UTC    1112  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:36 UTC    1139  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:41 UTC    1166  1000  1000   5 present   /usr/bin/phoc
Sat 2021-03-27 13:35:47 UTC    1193  1000  1000   5 present   /usr/bin/phoc
...

Here some more details, for the crashes of sddm-greeter and phoc

crash_phoc_13.tar.gz

crash_sddm-greeter_1.tar.gz

How to reproduce

Well I'm not sure how I got here, but March 25, I did :

sudo tasksel install desktop kde-desktop
sudo systemctl stop phosh
export WAYLAND_DISPLAY=wayland-0
startplasma-wayland --framebuffer --fb-device /dev/fb0 &#or fb1 to select the screen you want it on
plasmashell

plasmashell didn't went well, so then I restarted phosh

sudo systemctl start phosh

which worked, then I stopped the VM and restarted it 2 days later

What hardware are you running phosh on?

• amd64 qemu image

I'm using the librem5.qcow2 (PureOS 10.0 byzantium) in kvm