I saw this crash after joining a domain, when realmd timed out and exited.

#0  0x00007ff86d9f6819 in raise () from /lib64/libc.so.6
#1  0x00007ff86d9f7f28 in abort () from /lib64/libc.so.6
#2  0x00007ff86f4c3615 in mem_error () from /lib64/libglib-2.0.so.0
#3  0x00007ff86f50bb6b in slab_allocator_free_chunk ()
   from /lib64/libglib-2.0.so.0
#4  0x00007ff86f50be16 in magazine_cache_push_magazine ()
   from /lib64/libglib-2.0.so.0
#5  0x00007ff86f4c3ae1 in thread_memory_magazine2_unload.isra.11 ()
   from /lib64/libglib-2.0.so.0
#6  0x00007ff86f50cc58 in g_slice_free1 () from /lib64/libglib-2.0.so.0
#7  0x00007ff870165213 in config_line_free (data=<optimized out>)
    at realm-ini-config.c:114
#8  0x00007ff87016524c in reset_config_data (self=self@entry=0x7ff870937860)
    at realm-ini-config.c:253
#9  0x00007ff87016608e in realm_ini_config_finalize (obj=0x7ff870937860)
    at realm-ini-config.c:266
#10 0x00007ff86fa9837b in g_object_unref () from /lib64/libgobject-2.0.so.0
#11 0x00007ff87017353d in realm_samba_provider_finalize (obj=0x7ff8540036e0)
    at realm-samba-provider.c:191
#12 0x00007ff86fa9837b in g_object_unref () from /lib64/libgobject-2.0.so.0
#13 0x00007ff86f4edac8 in g_list_foreach () from /lib64/libglib-2.0.so.0
#14 0x00007ff86f4edaeb in g_list_free_full () from /lib64/libglib-2.0.so.0
#15 0x00007ff8701612c8 in realm_all_provider_finalize (obj=0x7ff87092b2e0)
    at realm-all-provider.c:273
#16 0x00007ff86fa9837b in g_object_unref () from /lib64/libgobject-2.0.so.0
#17 0x00007ff86f4d67e8 in g_datalist_clear () from /lib64/libglib-2.0.so.0
#18 0x00007ff86fa9837b in g_object_unref () from /lib64/libgobject-2.0.so.0
#19 0x00007ff870160494 in main (argc=1, argv=0x7fffed4eca98)
    at realm-daemon.c:543