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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) 2025 Intel Corporation
#
# Test for indirect target selection (ITS) cmdline permutations with other bugs
# like spectre_v2 and retbleed.
import os, sys, subprocess, itertools, re, shutil
test_dir = os.path.dirname(os.path.realpath(__file__))
sys.path.insert(0, test_dir + '/../../kselftest')
import ksft
import common as c
bug = "indirect_target_selection"
mitigation = c.get_sysfs(bug)
if not mitigation or "Not affected" in mitigation:
ksft.test_result_skip("Skipping its_permutations.py: not applicable")
ksft.finished()
if shutil.which('vng') is None:
ksft.test_result_skip("Skipping its_permutations.py: virtme-ng ('vng') not found in PATH.")
ksft.finished()
TEST = f"{test_dir}/its_sysfs.py"
default_kparam = ['clearcpuid=hypervisor', 'panic=5', 'panic_on_warn=1', 'oops=panic', 'nmi_watchdog=1', 'hung_task_panic=1']
DEBUG = " -v "
# Install dependencies
# https://github.com/arighi/virtme-ng
# apt install virtme-ng
BOOT_CMD = f"vng --run {test_dir}/../../../../../arch/x86/boot/bzImage "
#BOOT_CMD += DEBUG
bug = "indirect_target_selection"
input_options = {
'indirect_target_selection' : ['off', 'on', 'stuff', 'vmexit'],
'retbleed' : ['off', 'stuff', 'auto'],
'spectre_v2' : ['off', 'on', 'eibrs', 'retpoline', 'ibrs', 'eibrs,retpoline'],
}
def pretty_print(output):
OKBLUE = '\033[94m'
OKGREEN = '\033[92m'
WARNING = '\033[93m'
FAIL = '\033[91m'
ENDC = '\033[0m'
BOLD = '\033[1m'
# Define patterns and their corresponding colors
patterns = {
r"^ok \d+": OKGREEN,
r"^not ok \d+": FAIL,
r"^# Testing .*": OKBLUE,
r"^# Found: .*": WARNING,
r"^# Totals: .*": BOLD,
r"pass:([1-9]\d*)": OKGREEN,
r"fail:([1-9]\d*)": FAIL,
r"skip:([1-9]\d*)": WARNING,
}
# Apply colors based on patterns
for pattern, color in patterns.items():
output = re.sub(pattern, lambda match: f"{color}{match.group(0)}{ENDC}", output, flags=re.MULTILINE)
print(output)
combinations = list(itertools.product(*input_options.values()))
ksft.print_header()
ksft.set_plan(len(combinations))
logs = ""
for combination in combinations:
append = ""
log = ""
for p in default_kparam:
append += f' --append={p}'
command = BOOT_CMD + append
test_params = ""
for i, key in enumerate(input_options.keys()):
param = f'{key}={combination[i]}'
test_params += f' {param}'
command += f" --append={param}"
command += f" -- {TEST}"
test_name = f"{bug} {test_params}"
pretty_print(f'# Testing {test_name}')
t = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
t.wait()
output, _ = t.communicate()
if t.returncode == 0:
ksft.test_result_pass(test_name)
else:
ksft.test_result_fail(test_name)
output = output.decode()
log += f" {output}"
pretty_print(log)
logs += output + "\n"
# Optionally use tappy to parse the output
# apt install python3-tappy
with open("logs.txt", "w") as f:
f.write(logs)
ksft.finished()
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