Description of problem:
Deleted pairing setup to test bz 1027365. Set computer to "discoverable" and initiate scanning from phone. When phone finds the computer and establishes communication, bluez will crash when bringing up the pairing PIN process.

Version-Release number of selected component:
bluez-5.11-1.fc20

Additional info:
reporter:       libreport-2.1.9
backtrace_rating: 4
cmdline:        /usr/libexec/bluetooth/bluetoothd
crash_function: __find_specmb
executable:     /usr/libexec/bluetooth/bluetoothd
kernel:         3.11.10-300.fc20.x86_64
runlevel:       N 5
type:           CCpp
uid:            0

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 __find_specmb at printf-parse.h:108
 #1 _IO_vfprintf_internal at vfprintf.c:1308
 #2 ___vsprintf_chk at vsprintf_chk.c:85
 #3 ___sprintf_chk at sprintf_chk.c:31
 #4 sprintf at /usr/include/bits/stdio2.h:33
 #5 ba2str at lib/bluetooth.c:79
 #6 btd_adapter_confirm_reply at src/adapter.c:4671
 #7 confirm_cb at src/device.c:3971
 #8 agent_unref at src/agent.c:227
 #9 confirm_cb at src/device.c:3975