User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:46.0) Gecko/20100101
Firefox/46.0
Build Identifier: 

NetworkManager segfaults frequently (but not always), apparently when
performing a WiFi scan. If WiFi is off (e.g. airplane mode), then the crash
does not occur. 

Reproducible: Always

Steps to Reproduce:
1. Start NetworkManager.
2. Turn on WiFi.
Actual Results:  
NetworkManager crashes (segfault).


GDB trace:


Program received signal SIGSEGV, Segmentation fault.
on_bss_proxy_acquired (proxy=0x8b7890, result=0x8872e0, user_data=<optimized
out>)
    at supplicant-manager/nm-supplicant-interface.c:158
158             while (*iter) {

(gdb) bt
#0  0x000000000049ef47 in on_bss_proxy_acquired (proxy=0x8b7890,
result=0x8872e0, user_data=<optimized out>) at
supplicant-manager/nm-supplicant-interface.c:158
#1  0x00007ffff5644807 in g_simple_async_result_complete ()
    at /usr/lib64/libgio-2.0.so.0
#2  0x00007ffff5644869 in  () at /usr/lib64/libgio-2.0.so.0
#3  0x00007ffff50b7b65 in g_main_context_dispatch () at
/usr/lib64/libglib-2.0.so.0
#4  0x00007ffff50b7ed8 in  () at /usr/lib64/libglib-2.0.so.0
#5  0x00007ffff50b819a in g_main_loop_run () at /usr/lib64/libglib-2.0.so.0
#6  0x000000000043bee7 in main (argc=1, argv=0x7fffffffddb8) at main.c:513

---------------------------------------

Apparently the same issue as e.g.:
https://bugzilla.redhat.com/show_bug.cgi?id=1266003
https://bugzilla.redhat.com/show_bug.cgi?id=1267462
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1547575