This crash happened even with ibox module unloaded.
(gdb) bt
#0 0x00007f5049894a7d in pause () from /lib64/libpthread.so.0
#1 <signal handler called>
#2 0x00007f5048181d25 in raise () from /lib64/libc.so.6
#3 0x00007f50481831a8 in abort () from /lib64/libc.so.6
#4 0x00007f504817ac22 in __assert_fail_base () from /lib64/libc.so.6
#5 0x00007f504817acd2 in __assert_fail () from /lib64/libc.so.6
#6 0x00007f504988ba73 in __pthread_mutex_lock_full () from /lib64/libpthread.so.0
#7 0x00007f504b50fe20 in eina_lock_take (mutex=0x2ef60b0) at /usr/include/eina-1/eina/eina_inline_lock_posix.x:190
#8 ecore_thread_cancel (thread=0x2ef5ff0) at ecore_thread.c:835
#9 0x00007f504967dadd in eio_file_cancel (ls=<optimized out>) at eio_file.c:850
#10 0x00007f504967f418 in _eio_monitor_rename (monitor=0x31263f0, newpath=newpath@entry=0x7fff303606f0 "/usr/lib64/enlightenment/modules/ibox/e-module-ibox.edj")
at eio_monitor.c:204
#11 0x00007f5049681950 in _eio_inotify_events (file=<optimized out>, mask=<optimized out>, backend=<error reading variable: Unhandled dwarf expression opcode 0xfa>)
at eio_monitor_inotify.c:136
#12 0x00007f5049681a3a in _eio_inotify_handler (data=<optimized out>, fdh=<optimized out>) at eio_monitor_inotify.c:161
#13 0x00007f504b50c371 in _ecore_call_fd_cb (data=<optimized out>, func=<optimized out>, fd_handler=0x2501d60) at ecore_private.h:345
#14 _ecore_main_fd_handlers_call () at ecore_main.c:1670
#15 _ecore_main_loop_iterate_internal (once_only=once_only@entry=0) at ecore_main.c:1917
#16 0x00007f504b50c7e7 in ecore_main_loop_begin () at ecore_main.c:956
#17 0x0000000000439820 in main (argc=<optimized out>, argv=<optimized out>) at e_main.c:1061