1#!/usr/bin/env python3 2# 3# Copyright (c) 2017 Red Hat Inc 4# 5# Author: 6# Eduardo Habkost <ehabkost@redhat.com> 7# 8# This program is free software; you can redistribute it and/or modify 9# it under the terms of the GNU General Public License as published by 10# the Free Software Foundation; either version 2 of the License, or 11# (at your option) any later version. 12# 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17# 18# You should have received a copy of the GNU General Public License along 19# with this program; if not, write to the Free Software Foundation, Inc., 20# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 21 22""" 23Run QEMU with all combinations of -machine and -device types, 24check for crashes and unexpected errors. 25""" 26 27import os 28import sys 29import glob 30import logging 31import traceback 32import re 33import random 34import argparse 35from itertools import chain 36 37sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'python')) 38from qemu.machine import QEMUMachine 39from qemu.qmp import ConnectError 40 41logger = logging.getLogger('device-crash-test') 42dbg = logger.debug 43 44 45# Purposes of the following rule list: 46# * Avoiding verbose log messages when we find known non-fatal 47# (exitcode=1) errors 48# * Avoiding fatal errors when we find known crashes 49# * Skipping machines/devices that are known not to work out of 50# the box, when running in --quick mode 51# 52# Keeping the rule list updated is desirable, but not required, 53# because unexpected cases where QEMU exits with exitcode=1 will 54# just trigger a INFO message. 55 56# Valid error rule keys: 57# * accel: regexp, full match only 58# * machine: regexp, full match only 59# * device: regexp, full match only 60# * log: regexp, partial match allowed 61# * exitcode: if not present, defaults to 1. If None, matches any exitcode 62# * warn: if True, matching failures will be logged as warnings 63# * expected: if True, QEMU is expected to always fail every time 64# when testing the corresponding test case 65# * loglevel: log level of log output when there's a match. 66ERROR_RULE_LIST = [ 67 # Machines that won't work out of the box: 68 # MACHINE | ERROR MESSAGE 69 {'machine':'niagara', 'expected':True}, # Unable to load a firmware for -M niagara 70 {'machine':'boston', 'expected':True}, # Please provide either a -kernel or -bios argument 71 {'machine':'leon3_generic', 'expected':True}, # Can't read bios image (null) 72 73 # devices that don't work out of the box because they require extra options to "-device DEV": 74 # DEVICE | ERROR MESSAGE 75 {'device':'.*-(i386|x86_64)-cpu', 'expected':True}, # CPU socket-id is not set 76 {'device':'icp', 'expected':True}, # icp_realize: required link 'xics' not found: Property '.xics' not found 77 {'device':'ics', 'expected':True}, # ics_base_realize: required link 'xics' not found: Property '.xics' not found 78 # "-device ide-cd" does work on more recent QEMU versions, so it doesn't have expected=True 79 {'device':'ide-cd'}, # No drive specified 80 {'device':'ide-hd', 'expected':True}, # No drive specified 81 {'device':'ipmi-bmc-extern', 'expected':True}, # IPMI external bmc requires chardev attribute 82 {'device':'isa-debugcon', 'expected':True}, # Can't create serial device, empty char device 83 {'device':'isa-ipmi-bt', 'expected':True}, # IPMI device requires a bmc attribute to be set 84 {'device':'isa-ipmi-kcs', 'expected':True}, # IPMI device requires a bmc attribute to be set 85 {'device':'isa-parallel', 'expected':True}, # Can't create serial device, empty char device 86 {'device':'ivshmem-doorbell', 'expected':True}, # You must specify a 'chardev' 87 {'device':'ivshmem-plain', 'expected':True}, # You must specify a 'memdev' 88 {'device':'loader', 'expected':True}, # please include valid arguments 89 {'device':'nand', 'expected':True}, # Unsupported NAND block size 0x1 90 {'device':'nvdimm', 'expected':True}, # 'memdev' property is not set 91 {'device':'nvme', 'expected':True}, # Device initialization failed 92 {'device':'pc-dimm', 'expected':True}, # 'memdev' property is not set 93 {'device':'pci-bridge', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0. 94 {'device':'pci-bridge-seat', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0. 95 {'device':'pxb', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0. 96 {'device':'scsi-block', 'expected':True}, # drive property not set 97 {'device':'scsi-generic', 'expected':True}, # drive property not set 98 {'device':'scsi-hd', 'expected':True}, # drive property not set 99 {'device':'spapr-pci-host-bridge', 'expected':True}, # BUID not specified for PHB 100 {'device':'spapr-rng', 'expected':True}, # spapr-rng needs an RNG backend! 101 {'device':'spapr-vty', 'expected':True}, # chardev property not set 102 {'device':'tpm-tis', 'expected':True}, # tpm_tis: backend driver with id (null) could not be found 103 {'device':'unimplemented-device', 'expected':True}, # property 'size' not specified or zero 104 {'device':'usb-braille', 'expected':True}, # Property chardev is required 105 {'device':'usb-mtp', 'expected':True}, # rootdir property must be configured 106 {'device':'usb-redir', 'expected':True}, # Parameter 'chardev' is missing 107 {'device':'usb-serial', 'expected':True}, # Property chardev is required 108 {'device':'usb-storage', 'expected':True}, # drive property not set 109 {'device':'vfio-amd-xgbe', 'expected':True}, # -device vfio-amd-xgbe: vfio error: wrong host device name 110 {'device':'vfio-calxeda-xgmac', 'expected':True}, # -device vfio-calxeda-xgmac: vfio error: wrong host device name 111 {'device':'vfio-pci', 'expected':True}, # No provided host device 112 {'device':'vfio-pci-igd-lpc-bridge', 'expected':True}, # VFIO dummy ISA/LPC bridge must have address 1f.0 113 {'device':'vhost-scsi.*', 'expected':True}, # vhost-scsi: missing wwpn 114 {'device':'vhost-vsock-device', 'expected':True}, # guest-cid property must be greater than 2 115 {'device':'vhost-vsock-pci', 'expected':True}, # guest-cid property must be greater than 2 116 {'device':'virtio-9p-ccw', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL 117 {'device':'virtio-9p-device', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL 118 {'device':'virtio-9p-pci', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL 119 {'device':'virtio-blk-ccw', 'expected':True}, # drive property not set 120 {'device':'virtio-blk-device', 'expected':True}, # drive property not set 121 {'device':'virtio-blk-device', 'expected':True}, # drive property not set 122 {'device':'virtio-blk-pci', 'expected':True}, # drive property not set 123 {'device':'virtio-crypto-ccw', 'expected':True}, # 'cryptodev' parameter expects a valid object 124 {'device':'virtio-crypto-device', 'expected':True}, # 'cryptodev' parameter expects a valid object 125 {'device':'virtio-crypto-pci', 'expected':True}, # 'cryptodev' parameter expects a valid object 126 {'device':'virtio-input-host-device', 'expected':True}, # evdev property is required 127 {'device':'virtio-input-host-pci', 'expected':True}, # evdev property is required 128 {'device':'xen-pvdevice', 'expected':True}, # Device ID invalid, it must always be supplied 129 {'device':'vhost-vsock-ccw', 'expected':True}, # guest-cid property must be greater than 2 130 {'device':'zpci', 'expected':True}, # target must be defined 131 {'device':'pnv-(occ|icp|lpc)', 'expected':True}, # required link 'xics' not found: Property '.xics' not found 132 {'device':'powernv-cpu-.*', 'expected':True}, # pnv_core_realize: required link 'xics' not found: Property '.xics' not found 133 134 # ioapic devices are already created by pc and will fail: 135 {'machine':'q35|pc.*', 'device':'kvm-ioapic', 'expected':True}, # Only 1 ioapics allowed 136 {'machine':'q35|pc.*', 'device':'ioapic', 'expected':True}, # Only 1 ioapics allowed 137 138 # "spapr-cpu-core needs a pseries machine" 139 {'machine':'(?!pseries).*', 'device':'.*-spapr-cpu-core', 'expected':True}, 140 141 # KVM-specific devices shouldn't be tried without accel=kvm: 142 {'accel':'(?!kvm).*', 'device':'kvmclock', 'expected':True}, 143 144 # xen-specific machines and devices: 145 {'accel':'(?!xen).*', 'machine':'xen.*', 'expected':True}, 146 {'accel':'(?!xen).*', 'device':'xen-.*', 'expected':True}, 147 148 # this fails on some machine-types, but not all, so they don't have expected=True: 149 {'device':'vmgenid'}, # vmgenid requires DMA write support in fw_cfg, which this machine type does not provide 150 151 # Silence INFO messages for errors that are common on multiple 152 # devices/machines: 153 {'log':r"No '[\w-]+' bus found for device '[\w-]+'"}, 154 {'log':r"images* must be given with the 'pflash' parameter"}, 155 {'log':r"(Guest|ROM|Flash|Kernel) image must be specified"}, 156 {'log':r"[cC]ould not load [\w ]+ (BIOS|bios) '[\w-]+\.bin'"}, 157 {'log':r"Couldn't find rom image '[\w-]+\.bin'"}, 158 {'log':r"speed mismatch trying to attach usb device"}, 159 {'log':r"Can't create a second ISA bus"}, 160 {'log':r"duplicate fw_cfg file name"}, 161 # sysbus-related error messages: most machines reject most dynamic sysbus devices: 162 {'log':r"Option '-device [\w.,-]+' cannot be handled by this machine"}, 163 {'log':r"Device [\w.,-]+ is not supported by this machine yet"}, 164 {'log':r"Device [\w.,-]+ can not be dynamically instantiated"}, 165 {'log':r"Platform Bus: Can not fit MMIO region of size "}, 166 # other more specific errors we will ignore: 167 {'device':'.*-spapr-cpu-core', 'log':r"CPU core type should be"}, 168 {'log':r"MSI(-X)? is not supported by interrupt controller"}, 169 {'log':r"pxb-pcie? devices cannot reside on a PCIe? bus"}, 170 {'log':r"Ignoring smp_cpus value"}, 171 {'log':r"sd_init failed: Drive 'sd0' is already in use because it has been automatically connected to another device"}, 172 {'log':r"This CPU requires a smaller page size than the system is using"}, 173 {'log':r"MSI-X support is mandatory in the S390 architecture"}, 174 {'log':r"rom check and register reset failed"}, 175 {'log':r"Unable to initialize GIC, CPUState for CPU#0 not valid"}, 176 {'log':r"Multiple VT220 operator consoles are not supported"}, 177 {'log':r"core 0 already populated"}, 178 {'log':r"could not find stage1 bootloader"}, 179 180 # other exitcode=1 failures not listed above will just generate INFO messages: 181 {'exitcode':1, 'loglevel':logging.INFO}, 182 183 # everything else (including SIGABRT and SIGSEGV) will be a fatal error: 184 {'exitcode':None, 'fatal':True, 'loglevel':logging.FATAL}, 185] 186 187 188def errorRuleTestCaseMatch(rule, t): 189 """Check if a test case specification can match a error rule 190 191 This only checks if a error rule is a candidate match 192 for a given test case, it won't check if the test case 193 results/output match the rule. See ruleListResultMatch(). 194 """ 195 return (('machine' not in rule or 196 'machine' not in t or 197 re.match(rule['machine'] + '$', t['machine'])) and 198 ('accel' not in rule or 199 'accel' not in t or 200 re.match(rule['accel'] + '$', t['accel'])) and 201 ('device' not in rule or 202 'device' not in t or 203 re.match(rule['device'] + '$', t['device']))) 204 205 206def ruleListCandidates(t): 207 """Generate the list of candidates that can match a test case""" 208 for i, rule in enumerate(ERROR_RULE_LIST): 209 if errorRuleTestCaseMatch(rule, t): 210 yield (i, rule) 211 212 213def findExpectedResult(t): 214 """Check if there's an expected=True error rule for a test case 215 216 Returns (i, rule) tuple, where i is the index in 217 ERROR_RULE_LIST and rule is the error rule itself. 218 """ 219 for i, rule in ruleListCandidates(t): 220 if rule.get('expected'): 221 return (i, rule) 222 223 224def ruleListResultMatch(rule, r): 225 """Check if test case results/output match a error rule 226 227 It is valid to call this function only if 228 errorRuleTestCaseMatch() is True for the rule (e.g. on 229 rules returned by ruleListCandidates()) 230 """ 231 assert errorRuleTestCaseMatch(rule, r['testcase']) 232 return ((rule.get('exitcode', 1) is None or 233 r['exitcode'] == rule.get('exitcode', 1)) and 234 ('log' not in rule or 235 re.search(rule['log'], r['log'], re.MULTILINE))) 236 237 238def checkResultRuleList(r): 239 """Look up error rule for a given test case result 240 241 Returns (i, rule) tuple, where i is the index in 242 ERROR_RULE_LIST and rule is the error rule itself. 243 """ 244 for i, rule in ruleListCandidates(r['testcase']): 245 if ruleListResultMatch(rule, r): 246 return i, rule 247 248 raise Exception("this should never happen") 249 250 251def qemuOptsEscape(s): 252 """Escape option value QemuOpts""" 253 return s.replace(",", ",,") 254 255 256def formatTestCase(t): 257 """Format test case info as "key=value key=value" for prettier logging output""" 258 return ' '.join('%s=%s' % (k, v) for k, v in t.items()) 259 260 261def qomListTypeNames(vm, **kwargs): 262 """Run qom-list-types QMP command, return type names""" 263 types = vm.command('qom-list-types', **kwargs) 264 return [t['name'] for t in types] 265 266 267def infoQDM(vm): 268 """Parse 'info qdm' output""" 269 args = {'command-line': 'info qdm'} 270 devhelp = vm.command('human-monitor-command', **args) 271 for l in devhelp.split('\n'): 272 l = l.strip() 273 if l == '' or l.endswith(':'): 274 continue 275 d = {'name': re.search(r'name "([^"]+)"', l).group(1), 276 'no-user': (re.search(', no-user', l) is not None)} 277 yield d 278 279 280class QemuBinaryInfo(object): 281 def __init__(self, binary, devtype): 282 if devtype is None: 283 devtype = 'device' 284 285 self.binary = binary 286 self._machine_info = {} 287 288 dbg("devtype: %r", devtype) 289 args = ['-S', '-machine', 'none,accel=kvm:tcg'] 290 dbg("querying info for QEMU binary: %s", binary) 291 vm = QEMUMachine(binary=binary, args=args) 292 vm.launch() 293 try: 294 self.alldevs = set(qomListTypeNames(vm, implements=devtype, abstract=False)) 295 # there's no way to query DeviceClass::user_creatable using QMP, 296 # so use 'info qdm': 297 self.no_user_devs = set([d['name'] for d in infoQDM(vm, ) if d['no-user']]) 298 self.machines = list(m['name'] for m in vm.command('query-machines')) 299 self.user_devs = self.alldevs.difference(self.no_user_devs) 300 self.kvm_available = vm.command('query-kvm')['enabled'] 301 finally: 302 vm.shutdown() 303 304 def machineInfo(self, machine): 305 """Query for information on a specific machine-type 306 307 Results are cached internally, in case the same machine- 308 type is queried multiple times. 309 """ 310 if machine in self._machine_info: 311 return self._machine_info[machine] 312 313 mi = {} 314 args = ['-S', '-machine', '%s' % (machine)] 315 dbg("querying machine info for binary=%s machine=%s", self.binary, machine) 316 vm = QEMUMachine(binary=self.binary, args=args) 317 try: 318 vm.launch() 319 mi['runnable'] = True 320 except Exception: 321 dbg("exception trying to run binary=%s machine=%s", self.binary, machine, exc_info=sys.exc_info()) 322 dbg("log: %r", vm.get_log()) 323 mi['runnable'] = False 324 325 vm.shutdown() 326 self._machine_info[machine] = mi 327 return mi 328 329 330BINARY_INFO = {} 331 332 333def getBinaryInfo(args, binary): 334 if binary not in BINARY_INFO: 335 BINARY_INFO[binary] = QemuBinaryInfo(binary, args.devtype) 336 return BINARY_INFO[binary] 337 338 339def checkOneCase(args, testcase): 340 """Check one specific case 341 342 Returns a dictionary containing failure information on error, 343 or None on success 344 """ 345 binary = testcase['binary'] 346 accel = testcase['accel'] 347 machine = testcase['machine'] 348 device = testcase['device'] 349 350 dbg("will test: %r", testcase) 351 352 args = ['-S', '-machine', '%s,accel=%s' % (machine, accel), 353 '-device', qemuOptsEscape(device)] 354 cmdline = ' '.join([binary] + args) 355 dbg("will launch QEMU: %s", cmdline) 356 vm = QEMUMachine(binary=binary, args=args, qmp_timer=15) 357 358 exc = None 359 exc_traceback = None 360 try: 361 vm.launch() 362 except Exception as this_exc: 363 exc = this_exc 364 exc_traceback = traceback.format_exc() 365 dbg("Exception while running test case") 366 finally: 367 vm.shutdown() 368 ec = vm.exitcode() 369 log = vm.get_log() 370 371 if exc is not None or ec != 0: 372 return {'exc': exc, 373 'exc_traceback':exc_traceback, 374 'exitcode':ec, 375 'log':log, 376 'testcase':testcase, 377 'cmdline':cmdline} 378 379 380def binariesToTest(args, testcase): 381 if args.qemu: 382 r = args.qemu 383 else: 384 r = [f.path for f in os.scandir('.') 385 if f.name.startswith('qemu-system-') and 386 f.is_file() and os.access(f, os.X_OK)] 387 return r 388 389 390def accelsToTest(args, testcase): 391 if getBinaryInfo(args, testcase['binary']).kvm_available: 392 yield 'kvm' 393 yield 'tcg' 394 395 396def machinesToTest(args, testcase): 397 return getBinaryInfo(args, testcase['binary']).machines 398 399 400def devicesToTest(args, testcase): 401 return getBinaryInfo(args, testcase['binary']).user_devs 402 403 404TESTCASE_VARIABLES = [ 405 ('binary', binariesToTest), 406 ('accel', accelsToTest), 407 ('machine', machinesToTest), 408 ('device', devicesToTest), 409] 410 411 412def genCases1(args, testcases, var, fn): 413 """Generate new testcases for one variable 414 415 If an existing item already has a variable set, don't 416 generate new items and just return it directly. This 417 allows the "-t" command-line option to be used to choose 418 a specific test case. 419 """ 420 for testcase in testcases: 421 if var in testcase: 422 yield testcase.copy() 423 else: 424 for i in fn(args, testcase): 425 t = testcase.copy() 426 t[var] = i 427 yield t 428 429 430def genCases(args, testcase): 431 """Generate test cases for all variables 432 """ 433 cases = [testcase.copy()] 434 for var, fn in TESTCASE_VARIABLES: 435 dbg("var: %r, fn: %r", var, fn) 436 cases = genCases1(args, cases, var, fn) 437 return cases 438 439 440def casesToTest(args, testcase): 441 cases = genCases(args, testcase) 442 if args.random: 443 cases = list(cases) 444 cases = random.sample(cases, min(args.random, len(cases))) 445 if args.debug: 446 cases = list(cases) 447 dbg("%d test cases to test", len(cases)) 448 if args.shuffle: 449 cases = list(cases) 450 random.shuffle(cases) 451 return cases 452 453 454def logFailure(f, level): 455 t = f['testcase'] 456 logger.log(level, "failed: %s", formatTestCase(t)) 457 logger.log(level, "cmdline: %s", f['cmdline']) 458 for l in f['log'].strip().split('\n'): 459 logger.log(level, "log: %s", l) 460 logger.log(level, "exit code: %r", f['exitcode']) 461 462 # If the Exception is merely a QMP connect error, 463 # reduce the logging level for its traceback to 464 # improve visual clarity. 465 if isinstance(f.get('exc'), ConnectError): 466 logger.log(level, "%s.%s: %s", 467 type(f['exc']).__module__, 468 type(f['exc']).__qualname__, 469 str(f['exc'])) 470 level = logging.DEBUG 471 472 if f['exc_traceback']: 473 logger.log(level, "exception:") 474 for l in f['exc_traceback'].split('\n'): 475 logger.log(level, " %s", l.rstrip('\n')) 476 477 478def main(): 479 parser = argparse.ArgumentParser(description="QEMU -device crash test") 480 parser.add_argument('-t', metavar='KEY=VALUE', nargs='*', 481 help="Limit test cases to KEY=VALUE", 482 action='append', dest='testcases', default=[]) 483 parser.add_argument('-d', '--debug', action='store_true', 484 help='debug output') 485 parser.add_argument('-v', '--verbose', action='store_true', default=True, 486 help='verbose output') 487 parser.add_argument('-q', '--quiet', dest='verbose', action='store_false', 488 help='non-verbose output') 489 parser.add_argument('-r', '--random', type=int, metavar='COUNT', 490 help='run a random sample of COUNT test cases', 491 default=0) 492 parser.add_argument('--shuffle', action='store_true', 493 help='Run test cases in random order') 494 parser.add_argument('--dry-run', action='store_true', 495 help="Don't run any tests, just generate list") 496 parser.add_argument('-D', '--devtype', metavar='TYPE', 497 help="Test only device types that implement TYPE") 498 parser.add_argument('-Q', '--quick', action='store_true', default=True, 499 help="Quick mode: skip test cases that are expected to fail") 500 parser.add_argument('-F', '--full', action='store_false', dest='quick', 501 help="Full mode: test cases that are expected to fail") 502 parser.add_argument('--strict', action='store_true', dest='strict', 503 help="Treat all warnings as fatal") 504 parser.add_argument('qemu', nargs='*', metavar='QEMU', 505 help='QEMU binary to run') 506 args = parser.parse_args() 507 508 if args.debug: 509 lvl = logging.DEBUG 510 elif args.verbose: 511 lvl = logging.INFO 512 else: 513 lvl = logging.WARN 514 logging.basicConfig(stream=sys.stdout, level=lvl, format='%(levelname)s: %(message)s') 515 516 if not args.debug: 517 # Async QMP, when in use, is chatty about connection failures. 518 # This script knowingly generates a ton of connection errors. 519 # Silence this logger. 520 logging.getLogger('qemu.qmp.qmp_client').setLevel(logging.CRITICAL) 521 522 fatal_failures = [] 523 wl_stats = {} 524 skipped = 0 525 total = 0 526 527 tc = {} 528 dbg("testcases: %r", args.testcases) 529 if args.testcases: 530 for t in chain(*args.testcases): 531 for kv in t.split(): 532 k, v = kv.split('=', 1) 533 tc[k] = v 534 535 if len(binariesToTest(args, tc)) == 0: 536 print("No QEMU binary found", file=sys.stderr) 537 parser.print_usage(sys.stderr) 538 return 1 539 540 for t in casesToTest(args, tc): 541 logger.info("running test case: %s", formatTestCase(t)) 542 total += 1 543 544 expected_match = findExpectedResult(t) 545 if (args.quick and 546 (expected_match or 547 not getBinaryInfo(args, t['binary']).machineInfo(t['machine'])['runnable'])): 548 dbg("skipped: %s", formatTestCase(t)) 549 skipped += 1 550 continue 551 552 if args.dry_run: 553 continue 554 555 try: 556 f = checkOneCase(args, t) 557 except KeyboardInterrupt: 558 break 559 560 if f: 561 i, rule = checkResultRuleList(f) 562 dbg("testcase: %r, rule list match: %r", t, rule) 563 wl_stats.setdefault(i, []).append(f) 564 level = rule.get('loglevel', logging.DEBUG) 565 logFailure(f, level) 566 if rule.get('fatal') or (args.strict and level >= logging.WARN): 567 fatal_failures.append(f) 568 else: 569 dbg("success: %s", formatTestCase(t)) 570 if expected_match: 571 logger.warn("Didn't fail as expected: %s", formatTestCase(t)) 572 573 logger.info("Total: %d test cases", total) 574 if skipped: 575 logger.info("Skipped %d test cases", skipped) 576 577 if args.debug: 578 stats = sorted([(len(wl_stats.get(i, [])), rule) for i, rule in 579 enumerate(ERROR_RULE_LIST)], key=lambda x: x[0]) 580 for count, rule in stats: 581 dbg("error rule stats: %d: %r", count, rule) 582 583 if fatal_failures: 584 for f in fatal_failures: 585 t = f['testcase'] 586 logger.error("Fatal failure: %s", formatTestCase(t)) 587 logger.error("Fatal failures on some machine/device combinations") 588 return 1 589 590if __name__ == '__main__': 591 sys.exit(main()) 592