| 1 | # Copyright (C) 2018 - Francis Deslauriers <francis.deslauriers@efficios.com> |
| 2 | # |
| 3 | # This program is free software: you can redistribute it and/or modify |
| 4 | # it under the terms of the GNU General Public License as published by |
| 5 | # the Free Software Foundation, either version 3 of the License, or |
| 6 | # (at your option) any later version. |
| 7 | # |
| 8 | # This program is distributed in the hope that it will be useful, |
| 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | # GNU General Public License for more details. |
| 12 | # |
| 13 | # You should have received a copy of the GNU General Public License |
| 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 15 | |
| 16 | import datetime |
| 17 | import gzip |
| 18 | import os |
| 19 | import pprint |
| 20 | import random |
| 21 | import subprocess |
| 22 | import sys |
| 23 | |
| 24 | def save_instr_points(instr_points): |
| 25 | |
| 26 | # Save in /root to be persistent across lava slave reboots. |
| 27 | instrumenation_points_arch = '/root/instr_points.txt.gz' |
| 28 | |
| 29 | print('Saving instrumentation points to \'{}\' ...'.format(instrumenation_points_arch), end='') |
| 30 | sys.stdout.flush() |
| 31 | |
| 32 | text = "\n".join(instr_points) |
| 33 | |
| 34 | with gzip.open(instrumenation_points_arch, 'w') as f: |
| 35 | f.write(text.encode('utf-8')) |
| 36 | |
| 37 | # Attach fuzzing data to test case. |
| 38 | events = ['lava-test-case-attach', 'generate-fuzzing-data', instrumenation_points_arch] |
| 39 | |
| 40 | try: |
| 41 | subprocess.call(events) |
| 42 | except OSError as e: |
| 43 | print("Execution failed:", e, file=sys.stderr) |
| 44 | print("Probably not running on the lava worker") |
| 45 | pprint.pprint(events) |
| 46 | print('Done.') |
| 47 | |
| 48 | def main(): |
| 49 | assert(len(sys.argv) == 2) |
| 50 | |
| 51 | seed = int(sys.argv[1]) |
| 52 | print('Random seed: {}'.format(seed)) |
| 53 | |
| 54 | rng = random.Random(seed) |
| 55 | |
| 56 | # Get all the symbols from kallsyms. |
| 57 | with open('/proc/kallsyms') as kallsyms_file: |
| 58 | raw_symbol_list = kallsyms_file.readlines() |
| 59 | |
| 60 | # Keep only the symbol name. |
| 61 | symbol_list = [] |
| 62 | for symbol in raw_symbol_list: |
| 63 | symbol = symbol.split()[2].strip() |
| 64 | if 'ftrace' not in symbol: |
| 65 | symbol_list.append(symbol) |
| 66 | |
| 67 | instrumentation_points = [] |
| 68 | |
| 69 | # Add all symbols. |
| 70 | instrumentation_points.extend(symbol_list) |
| 71 | |
| 72 | # For each symbol, create 2 new instrumentation points by random offsets. |
| 73 | for s in symbol_list: |
| 74 | offsets = rng.sample(range(1, 10), 2) |
| 75 | for offset in offsets: |
| 76 | instrumentation_points.append(s + "+" + str(hex(offset))) |
| 77 | |
| 78 | lower_bound = 0x0 |
| 79 | upper_bound = 0xffffffffffffffff |
| 80 | address_list = [] |
| 81 | |
| 82 | # Add random addresses to the instrumentation points. |
| 83 | for _ in range(1000): |
| 84 | instrumentation_points.append(hex(rng.randint(lower_bound, upper_bound))) |
| 85 | |
| 86 | # Shuffle the entire list. |
| 87 | rng.shuffle(instrumentation_points) |
| 88 | |
| 89 | # Save instrumentation points to disk and attach it to lava test run. |
| 90 | save_instr_points(instrumentation_points) |
| 91 | |
| 92 | if __name__ == "__main__": |
| 93 | main() |