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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, see <https://www.gnu.org/licenses/>.
20
21 """
22 Run QEMU with all combinations of -machine and -device types,
23 check for crashes and unexpected errors.
24 """
25
26 import os
27 import sys
28 import glob
29 import logging
30 import traceback
31 import re
32 import random
33 import argparse
34 from itertools import chain
35 from pathlib import Path
36
37 try:
38 from qemu.machine import QEMUMachine
39 from qemu.qmp import ConnectError
40 except ModuleNotFoundError as exc:
41 path = Path(__file__).resolve()
42 print(f"Module '{exc.name}' not found.")
43 print(" Try running this script like so:")
44 print(f' > $builddir/run "{path}"')
45 sys.exit(1)
46
47 logger = logging.getLogger('device-crash-test')
48 dbg = logger.debug
49
50
51 # Purposes of the following rule list:
52 # * Avoiding verbose log messages when we find known non-fatal
53 # (exitcode=1) errors
54 # * Avoiding fatal errors when we find known crashes
55 # * Skipping machines/devices that are known not to work out of
56 # the box, when running in --quick mode
57 #
58 # Keeping the rule list updated is desirable, but not required,
59 # because unexpected cases where QEMU exits with exitcode=1 will
60 # just trigger a INFO message.
61
62 # Valid error rule keys:
63 # * accel: regexp, full match only
64 # * machine: regexp, full match only
65 # * device: regexp, full match only
66 # * log: regexp, partial match allowed
67 # * exitcode: if not present, defaults to 1. If None, matches any exitcode
68 # * warn: if True, matching failures will be logged as warnings
69 # * expected: if True, QEMU is expected to always fail every time
70 # when testing the corresponding test case
71 # * loglevel: log level of log output when there's a match.
72 ERROR_RULE_LIST = [
73 # Machines that won't work out of the box:
74 # MACHINE | ERROR MESSAGE
75 {'machine':'niagara', 'expected':True}, # Unable to load a firmware for -M niagara
76 {'machine':'boston', 'expected':True}, # Please provide either a -kernel or -bios argument
77 {'machine':'leon3_generic', 'expected':True}, # Can't read bios image (null)
78
79 # devices that don't work out of the box because they require extra options to "-device DEV":
80 # DEVICE | ERROR MESSAGE
81 {'device':'.*-(i386|x86_64)-cpu', 'expected':True}, # CPU socket-id is not set
82 {'device':'icp', 'expected':True}, # icp_realize: required link 'xics' not found: Property '.xics' not found
83 {'device':'ics', 'expected':True}, # ics_base_realize: required link 'xics' not found: Property '.xics' not found
84 # "-device ide-cd" does work on more recent QEMU versions, so it doesn't have expected=True
85 {'device':'ide-cd'}, # No drive specified
86 {'device':'ide-hd', 'expected':True}, # No drive specified
87 {'device':'ipmi-bmc-extern', 'expected':True}, # IPMI external bmc requires chardev attribute
88 {'device':'isa-debugcon', 'expected':True}, # Can't create serial device, empty char device
89 {'device':'isa-ipmi-bt', 'expected':True}, # IPMI device requires a bmc attribute to be set
90 {'device':'isa-ipmi-kcs', 'expected':True}, # IPMI device requires a bmc attribute to be set
91 {'device':'isa-parallel', 'expected':True}, # Can't create serial device, empty char device
92 {'device':'ivshmem-doorbell', 'expected':True}, # You must specify a 'chardev'
93 {'device':'ivshmem-plain', 'expected':True}, # You must specify a 'memdev'
94 {'device':'loader', 'expected':True}, # please include valid arguments
95 {'device':'nvdimm', 'expected':True}, # 'memdev' property is not set
96 {'device':'nvme', 'expected':True}, # Device initialization failed
97 {'device':'pc-dimm', 'expected':True}, # 'memdev' property is not set
98 {'device':'pci-bridge', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0.
99 {'device':'pci-bridge-seat', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0.
100 {'device':'pxb', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0.
101 {'device':'pxb-cxl', 'expected':True}, # pxb-cxl devices cannot reside on a PCI bus.
102 {'device':'scsi-block', 'expected':True}, # drive property not set
103 {'device':'scsi-generic', 'expected':True}, # drive property not set
104 {'device':'scsi-hd', 'expected':True}, # drive property not set
105 {'device':'spapr-pci-host-bridge', 'expected':True}, # BUID not specified for PHB
106 {'device':'spapr-rng', 'expected':True}, # spapr-rng needs an RNG backend!
107 {'device':'spapr-vty', 'expected':True}, # chardev property not set
108 {'device':'tpm-tis', 'expected':True}, # tpm_tis: backend driver with id (null) could not be found
109 {'device':'unimplemented-device', 'expected':True}, # property 'size' not specified or zero
110 {'device':'usb-braille', 'expected':True}, # Property chardev is required
111 {'device':'usb-mtp', 'expected':True}, # rootdir property must be configured
112 {'device':'usb-redir', 'expected':True}, # Parameter 'chardev' is missing
113 {'device':'usb-serial', 'expected':True}, # Property chardev is required
114 {'device':'usb-storage', 'expected':True}, # drive property not set
115 {'device':'vfio-pci', 'expected':True}, # No provided host device
116 {'device':'vfio-pci-igd-lpc-bridge', 'expected':True}, # VFIO dummy ISA/LPC bridge must have address 1f.0
117 {'device':'vhost-scsi.*', 'expected':True}, # vhost-scsi: missing wwpn
118 {'device':'vhost-vsock-device', 'expected':True}, # guest-cid property must be greater than 2
119 {'device':'vhost-vsock-pci', 'expected':True}, # guest-cid property must be greater than 2
120 {'device':'virtio-9p-ccw', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL
121 {'device':'virtio-9p-device', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL
122 {'device':'virtio-9p-pci', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL
123 {'device':'virtio-blk-ccw', 'expected':True}, # drive property not set
124 {'device':'virtio-blk-device', 'expected':True}, # drive property not set
125 {'device':'virtio-blk-device', 'expected':True}, # drive property not set
126 {'device':'virtio-blk-pci', 'expected':True}, # drive property not set
127 {'device':'virtio-crypto-ccw', 'expected':True}, # 'cryptodev' parameter expects a valid object
128 {'device':'virtio-crypto-device', 'expected':True}, # 'cryptodev' parameter expects a valid object
129 {'device':'virtio-crypto-pci', 'expected':True}, # 'cryptodev' parameter expects a valid object
130 {'device':'virtio-input-host-device', 'expected':True}, # evdev property is required
131 {'device':'virtio-input-host-pci', 'expected':True}, # evdev property is required
132 {'device':'xen-pvdevice', 'expected':True}, # Device ID invalid, it must always be supplied
133 {'device':'vhost-vsock-ccw', 'expected':True}, # guest-cid property must be greater than 2
134 {'device':'zpci', 'expected':True}, # target must be defined
135 {'device':'pnv-(occ|icp|lpc)', 'expected':True}, # required link 'xics' not found: Property '.xics' not found
136 {'device':'powernv-cpu-.*', 'expected':True}, # pnv_core_realize: required link 'xics' not found: Property '.xics' not found
137
138 # ioapic devices are already created by pc and will fail:
139 {'machine':'q35|pc.*', 'device':'kvm-ioapic', 'expected':True}, # Only 1 ioapics allowed
140 {'machine':'q35|pc.*', 'device':'ioapic', 'expected':True}, # Only 1 ioapics allowed
141
142 # "spapr-cpu-core needs a pseries machine"
143 {'machine':'(?!pseries).*', 'device':'.*-spapr-cpu-core', 'expected':True},
144
145 # KVM-specific devices shouldn't be tried without accel=kvm:
146 {'accel':'(?!kvm).*', 'device':'kvmclock', 'expected':True},
147
148 # xen-specific machines and devices:
149 {'accel':'(?!xen).*', 'machine':'xen.*', 'expected':True},
150 {'accel':'(?!xen).*', 'device':'xen-.*', 'expected':True},
151
152 # this fails on some machine-types, but not all, so they don't have expected=True:
153 {'device':'vmgenid'}, # vmgenid requires DMA write support in fw_cfg, which this machine type does not provide
154
155 # Silence INFO messages for errors that are common on multiple
156 # devices/machines:
157 {'log':r"No '[\w-]+' bus found for device '[\w-]+'"},
158 {'log':r"(Guest|ROM|Flash|Kernel) image must be specified"},
159 {'log':r"[cC]ould not load [\w ]+ (BIOS|bios) '[\w-]+\.bin'"},
160 {'log':r"Couldn't find rom image '[\w-]+\.bin'"},
161 {'log':r"speed mismatch trying to attach usb device"},
162 {'log':r"Can't create a second ISA bus"},
163 {'log':r"duplicate fw_cfg file name"},
164 # sysbus-related error messages: most machines reject most dynamic sysbus devices:
165 {'log':r"Device [\w.,-]+ is not supported by this machine yet"},
166 {'log':r"Device [\w.,-]+ can not be dynamically instantiated"},
167 {'log':r"Platform Bus: Can not fit MMIO region of size "},
168 # other more specific errors we will ignore:
169 {'device':'.*-spapr-cpu-core', 'log':r"CPU core type should be"},
170 {'log':r"MSI(-X)? is not supported by interrupt controller"},
171 {'log':r"pxb-pcie? devices cannot reside on a PCIe? bus"},
172 {'log':r"sd_init failed: Drive 'sd0' is already in use because it has been automatically connected to another device"},
173 {'log':r"This CPU requires a smaller page size than the system is using"},
174 {'log':r"MSI-X support is mandatory in the S390 architecture"},
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
188 def 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
206 def 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
213 def 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
224 def 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
238 def 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
251 def qemuOptsEscape(s):
252 """Escape option value QemuOpts"""
253 return s.replace(",", ",,")
254
255
256 def 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
261 def qomListTypeNames(vm, **kwargs):
262 """Run qom-list-types QMP command, return type names"""
263 types = vm.cmd('qom-list-types', **kwargs)
264 return [t['name'] for t in types]
265
266
267 def infoQDM(vm):
268 """Parse 'info qdm' output"""
269 args = {'command-line': 'info qdm'}
270 devhelp = vm.cmd('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
280 class 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.cmd('query-machines'))
299 self.user_devs = self.alldevs.difference(self.no_user_devs)
300 self.kvm_available = vm.cmd('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
330 BINARY_INFO = {}
331
332
333 def 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
339 def 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
380 def 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
390 def accelsToTest(args, testcase):
391 if getBinaryInfo(args, testcase['binary']).kvm_available and not args.tcg_only:
392 yield 'kvm'
393 yield 'tcg'
394
395
396 def machinesToTest(args, testcase):
397 return getBinaryInfo(args, testcase['binary']).machines
398
399
400 def devicesToTest(args, testcase):
401 return getBinaryInfo(args, testcase['binary']).user_devs
402
403
404 TESTCASE_VARIABLES = [
405 ('binary', binariesToTest),
406 ('accel', accelsToTest),
407 ('machine', machinesToTest),
408 ('device', devicesToTest),
409 ]
410
411
412 def 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
430 def 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
440 def 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
454 def 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
478 def 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('--tcg-only', action='store_true', dest='tcg_only',
505 help="Only test with TCG accelerator")
506 parser.add_argument('qemu', nargs='*', metavar='QEMU',
507 help='QEMU binary to run')
508 args = parser.parse_args()
509
510 if args.debug:
511 lvl = logging.DEBUG
512 elif args.verbose:
513 lvl = logging.INFO
514 else:
515 lvl = logging.WARN
516 logging.basicConfig(stream=sys.stdout, level=lvl, format='%(levelname)s: %(message)s')
517
518 if not args.debug:
519 # Async QMP, when in use, is chatty about connection failures.
520 # This script knowingly generates a ton of connection errors.
521 # Silence this logger.
522 logging.getLogger('qemu.qmp.protocol').setLevel(logging.CRITICAL)
523
524 fatal_failures = []
525 wl_stats = {}
526 skipped = 0
527 total = 0
528
529 tc = {}
530 dbg("testcases: %r", args.testcases)
531 if args.testcases:
532 for t in chain(*args.testcases):
533 for kv in t.split():
534 k, v = kv.split('=', 1)
535 tc[k] = v
536
537 if len(binariesToTest(args, tc)) == 0:
538 print("No QEMU binary found", file=sys.stderr)
539 parser.print_usage(sys.stderr)
540 return 1
541
542 for t in casesToTest(args, tc):
543 logger.info("running test case: %s", formatTestCase(t))
544 total += 1
545
546 expected_match = findExpectedResult(t)
547 if (args.quick and
548 (expected_match or
549 not getBinaryInfo(args, t['binary']).machineInfo(t['machine'])['runnable'])):
550 dbg("skipped: %s", formatTestCase(t))
551 skipped += 1
552 continue
553
554 if args.dry_run:
555 continue
556
557 try:
558 f = checkOneCase(args, t)
559 except KeyboardInterrupt:
560 break
561
562 if f:
563 i, rule = checkResultRuleList(f)
564 dbg("testcase: %r, rule list match: %r", t, rule)
565 wl_stats.setdefault(i, []).append(f)
566 level = rule.get('loglevel', logging.DEBUG)
567 logFailure(f, level)
568 if rule.get('fatal') or (args.strict and level >= logging.WARN):
569 fatal_failures.append(f)
570 else:
571 dbg("success: %s", formatTestCase(t))
572 if expected_match:
573 logger.warn("Didn't fail as expected: %s", formatTestCase(t))
574
575 logger.info("Total: %d test cases", total)
576 if skipped:
577 logger.info("Skipped %d test cases", skipped)
578
579 if args.debug:
580 stats = sorted([(len(wl_stats.get(i, [])), rule) for i, rule in
581 enumerate(ERROR_RULE_LIST)], key=lambda x: x[0])
582 for count, rule in stats:
583 dbg("error rule stats: %d: %r", count, rule)
584
585 if fatal_failures:
586 for f in fatal_failures:
587 t = f['testcase']
588 logger.error("Fatal failure: %s", formatTestCase(t))
589 logger.error("Fatal failures on some machine/device combinations")
590 return 1
591
592 if __name__ == '__main__':
593 sys.exit(main())