#0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007ffff4f92dbd in __GI___pthread_mutex_lock (mutex=0x7fffdc783f60 <sessions_mutex>) at ../nptl/pthread_mutex_lock.c:80
#2  0x00007fffdc5481a1 in janus_videoroom_hangup_media (handle=0x60300007ccc0) at plugins/janus_videoroom.c:3346
#3  0x0000000000444fcd in janus_ice_webrtc_hangup (handle=0x612000023a40, reason=0x523340 "Close PC") at ice.c:1238
#4  0x000000000049c7e5 in janus_plugin_close_pc (plugin_session=0x60300007ccc0) at janus.c:3222
#5  0x00007fffdc53a080 in janus_videoroom_handle_message (handle=0x603000034690, transaction=0x60200003ee30 "i39n4mcd9l5p", message=0x6070000148b0, jsep=0x0)
    at plugins/janus_videoroom.c:2653
#6  0x0000000000485151 in janus_process_incoming_request (request=0x6040000107d0) at janus.c:1387
#7  0x00000000004944fc in janus_transport_task (data=0x6040000107d0, user_data=0x0) at janus.c:2718
#8  0x00007ffff673054e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007ffff672fbb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff4f906ba in start_thread (arg=0x7fffd4269700) at pthread_create.c:333
#11 0x00007ffff4cc63dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109