FuzzNus python based GDB script that there are a lot of features. Recently I was doing research on grub, therefore I wrote it using Python API. FuzzNus allows you to the desired instruction searching in frame pointers (or memory). Then you can use as you want (such as set a breakpoint depending on the content,searching vulnerable instruction etc.)

Usage:
(gdb) source /home/dmr/fuzznus.py
(gdb) nus lea

Output:
(gdb) nus lea
Disasm
0xe728 === leave
Frame name:
grub_getkey
Disasm
0x7fb11d4 === lea eax,[edi+0x2]
Frame name:
None
Disasm
0x7fb11de === lea eax,[edi+0x1]
Frame name:
None
Disasm
0x7fb1208 === lea eax,[ebp-0x818]
Frame name:
None