Generic bluetooth dumb fuzzer. Low effort, was not tested much, but I can tell you that 60% of the time it works every time.
install bluetooth library files (extra/bluez-libs)
gcc bt-fuzzer.c -o bt-fuzzer -lbluetooth
$ ./bt-fuzzer
Usage: bt-fuzzer [options] -p <prototype> -b <XX:XX:XX:XX:XX:XX>
-h Print this help and exit
-s Provide a fixed seed to reproduce a test case
-i Number of iterations to fuzz
-p Prototype socket to fuzz (l2cap, rfcomm, avdtp, sco)
-c Channel (Required if rfcomm protocol)
-v Verbose
-b Bluetooth Device Hardware ID to fuzz (XX:XX:XX:XX:XX:XX)
Requires root privileges for RAW socket usage.