[FS#603] umdns crashes on reboot

[LEDE Bugs]

The following task has a new comment added:

FS#603 - umdns crashes on reboot
User who did this - Damjan Georgievski (gdamjan)

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Backtrace:

#0  0x77909993 in uloop_timeout_add (timeout=timeout at entry=0x778c2488)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/libubox-2017-02-24-96305a3c/uloop.c:263
#1  0x77909a5f in uloop_timeout_set (timeout=0x778c2488, msecs=100)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/libubox-2017-02-24-96305a3c/uloop.c:301
#2  0x00403ac9 in interface_start (iface=0x778c2450)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/umdns-2017-02-15-0d545ed7/interface.c:510
#3  iface_update_cb (tree=, node_new=0x778c2450, node_old=)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/umdns-2017-02-15-0d545ed7/interface.c:526
#4  0x7790b417 in vlist_add (tree=0x416108 , node=0x778c2450, key=)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/libubox-2017-02-24-96305a3c/vlist.c:58
#5  0x0040356d in _interface_add (name=name at entry=0xa8b064 "br-lan", multicast=multicast at entry=1, v6=v6 at entry=1)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/umdns-2017-02-15-0d545ed7/interface.c:555
#6  0x004040d3 in interface_add (name=)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/umdns-2017-02-15-0d545ed7/interface.c:615
#7  0x004031ff in umdns_set_config (ctx=, obj=, req=, method=, msg=0xa8b044)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/umdns-2017-02-15-0d545ed7/ubus.c:156
#8  0x778f2395 in ubus_process_invoke (ctx=, hdr=, obj=0x416080 , attrbuf=,
    fd=-1) at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/ubus-2017-02-18-34c6e818/libubus-obj.c:95
#9  0x778f2461 in ubus_process_obj_msg (ctx=, buf=0x41a2d4 , fd=)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/ubus-2017-02-18-34c6e818/libubus-obj.c:142
#10 0x778f1593 in ubus_process_msg (ctx=0x41a270 , buf=0x41a2d4 , fd=)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/ubus-2017-02-18-34c6e818/libubus.c:110
#11 0x778f1f31 in ubus_handle_data (u=0x41a29c , events=)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/ubus-2017-02-18-34c6e818/libubus-io.c:314
#12 0x77909e7d in uloop_run_events (timeout=)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/libubox-2017-02-24-96305a3c/uloop.c:193
#13 uloop_run () at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/libubox-2017-02-24-96305a3c/uloop.c:548
#14 0x0040140b in main (argc=, argv=0x7f957664)
    at /home/damjan/src/lede/build_dir/target-mips_24kc_musl-1.1.16/umdns-2017-02-15-0d545ed7/main.c:97

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=603#comment2092