Get xrefs to a stack variable (https://reverseengineering.stackexchange.com/questions/16055/idapython-get-xrefs-to-a-stack-variable)

stack_xrefs.py

import ida_frame
import ida_funcs
import idc

FUNC_ADDRESS = 0x0000000080002BC0
VAR_NAME = "EfiSmmBase2Protocol"


def get_member_by_name(pframe, var_name):
    for mid in range(pframe.memqty):
        if idc.get_member_name(pframe.id, pframe.get_member(mid).soff) == var_name:
            return pframe.get_member(mid)
    return None


def get_stack_xrefs(func_ea, var_name):
    pfunc = ida_funcs.get_func(func_ea)
    pframe = ida_frame.get_frame(pfunc)
    pmember = get_member_by_name(pframe, var_name)
    result = list()
    if pmember is None:
        return result
    xrefs = ida_frame.xreflist_t()
    ida_frame.build_stkvar_xrefs(xrefs, pfunc, pmember)
    for each in xrefs:
        result.append(each.ea)
    return result


xrefs = get_stack_xrefs(FUNC_ADDRESS, VAR_NAME)
print(list(map(hex, xrefs))) # test