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[Mathieu Trudel-Lapierre <mathieu.tl@xxxxxxxxx>]

NM probably really shouldn't run into this case, since right after
initializing state to NM_STATE_UNKNOWN, there is a big if-ifelse-else
block which is supposed to *always* set the correct state. Somehow we
don't get through the else block.

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https://bugs.launchpad.net/bugs/1499906

Title:
  NM crashes when restarted on arale

Status in network-manager package in Ubuntu:
  New

Bug description:
  Discovered this while testing for another bug; I hadn't run into this
  problem before:

  NetworkManager[3456]: <info>  startup complete
  NetworkManager[3456]: <info>  (/ril_0) modem is now Online
  NetworkManager[3456]: <info>  (/ril_0): update_modem_state: 'Attached': false 'Online': true 'IMSI': (null)
  NetworkManager[3456]: <info>  (ril_0): modem state changed, 'initializing' --> 'disabled' (reason: modem not ready)
  NetworkManager[3456]: <info>  (/ril_0) updated available interfaces
  NetworkManager[3456]: <info>  (/ril_0): found new SimManager interface
  NetworkManager[3456]: <info>  (/ril_0): found new ConnectionManager interface
  NetworkManager[3456]: <info>  GetPropsDone: 'SubscriberIdentity': (null)
  NetworkManager[3456]: <info>  (/ril_0): update_modem_state: 'Attached': false 'Online': true 'IMSI': 302500200836319

  Program received signal SIGSEGV, Segmentation fault.
  0xb690606e in strlen () from /lib/arm-linux-gnueabihf/libc.so.6
  (gdb) bt full
  #0  0xffffffff in strlen () at /lib/arm-linux-gnueabihf/libc.so.6
  #1  0xffffffff in vfprintf () at /lib/arm-linux-gnueabihf/libc.so.6
  #2  0xffffffff in __vasprintf_chk () at /lib/arm-linux-gnueabihf/libc.so.6
  #3  0xffffffff in g_vasprintf (__ap=..., __fmt=<optimized out>, __ptr=0xbefff1f8) at /usr/include/arm-linux-gnueabihf/bits/stdio2.h:210
          __func__ = "g_vasprintf"
  #4  0xffffffff in g_vasprintf (string=string@entry=0xbefff1f8, format=format@entry=0xb2ace180 "(%s): modem state changed, '%s' --> '%s' (reason: %s)\n", args=...) at /build/glib2.0-hi_vf7/glib2.0-2.45.8/./glib/gprintf.c:316
          __func__ = "g_vasprintf"
  #5  0xffffffff in g_strdup_vprintf (format=format@entry=0xb2ace180 "(%s): modem state changed, '%s' --> '%s' (reason: %s)\n", args=..., args@entry=...)
      at /build/glib2.0-hi_vf7/glib2.0-2.45.8/./glib/gstrfuncs.c:514
          string = 0x0
  #6  0x000a0d04 in _nm_log_impl (file=0xb2acdf70 "nm-modem.c", line=line@entry=153, func=0xb2acdd60 <__func__.33002> "nm_modem_set_state", level=level@entry=LOGL_INFO, domain=domain@entry=LOGD_MB, error=error@entry=0, fmt=0xb2ace180 "(%s): modem state changed, '%s' --> '%s' (reason: %s)\n") at nm-logging.c:388
          args = {__ap = 0xbefff260}
          msg = <optimized out>
          fullmsg = 0x0
          tv = {tv_sec = -1232066209, tv_usec = -1226609788}
          syslog_level = 6
  ---Type <return> to continue, or q <return> to quit---
          g_log_level = 64
          __func__ = "_nm_log_impl"
  #7  0xffffffff in nm_modem_set_state (self=0x1eb8e0 [NMModemOfono], new_state=NM_MODEM_STATE_UNKNOWN, reason=0x1 <error: Cannot access memory at address 0x1>)
      at nm-modem.c:149
          priv = <optimized out>
          old_state = NM_MODEM_STATE_DISABLED
          __func__ = "nm_modem_set_state"
  #8  0xffffffff in update_modem_state (self=self@entry=0x1eb8e0 [NMModemOfono])
      at nm-modem-ofono.c:124
          priv = <optimized out>
          state = <optimized out>
          new_state = <optimized out>
          reason = <optimized out>
          __func__ = "update_modem_state"
  #9  0xffffffff in handle_subscriber_identity (self=self@entry=0x1eb8e0 [NMModemOfono], value=value@entry=0x1dd368) at nm-modem-ofono.c:334
          priv = <optimized out>
          value_str = <optimized out>
          __func__ = "handle_subscriber_identity"
  #10 0xffffffff in get_ofono_sim_properties_done (proxy=0x1daf80 [DBusGProxy], call_id=0x1, user_data=0x1eb8e0) at nm-modem-ofono.c:365
          self = 0x1eb8e0 [NMModemOfono]
  ---Type <return> to continue, or q <return> to quit---
          error = 0x0
  Python Exception <class 'TypeError'> iter() returned non-iterator of type '_iterator': 
          properties = 0x1e4440
          value = 0x1dd368
          __func__ = "get_ofono_sim_properties_done"
  #11 0xffffffff in  () at /lib/arm-linux-gnueabihf/libdbus-1.so.3

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