Comment 2 for bug 829980

StacktraceTop:
 __strlen_sse42 () at ../sysdeps/x86_64/multiarch/strlen-sse4.S:51
 ?? () from /tmp/tmp0yDejf/lib/x86_64-linux-gnu/libdbus-1.so.3
 ?? () from /tmp/tmp0yDejf/lib/x86_64-linux-gnu/libdbus-1.so.3
 dbus_message_iter_append_basic () from /tmp/tmp0yDejf/lib/x86_64-linux-gnu/libdbus-1.so.3
 upstart_emit_event (proxy=0x7f7a0e58b2f0, name=0x7f7a0e58efb0 "power_supply-device-added", env=<optimized out>, wait=0, handler=0, error_handler=0x7f7a0d53cd7c <emit_event_error>, data=0x0, timeout=2147483647) at com.ubuntu.Upstart.c:1018