mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-28 11:28:38 +00:00
339 lines
10 KiB
Python
339 lines
10 KiB
Python
#!/usr/bin/env python
|
|
|
|
usage = """%prog: A test for OOM conditions in the shell.
|
|
|
|
%prog finds segfaults and other errors caused by incorrect handling of
|
|
allocation during OOM (out-of-memory) conditions.
|
|
"""
|
|
|
|
help = """Check for regressions only. This runs a set of files with a known
|
|
number of OOM errors (specified by REGRESSION_COUNT), and exits with a non-zero
|
|
result if more or less errors are found. See js/src/Makefile.in for invocation.
|
|
"""
|
|
|
|
|
|
import hashlib
|
|
import re
|
|
import shlex
|
|
import subprocess
|
|
import sys
|
|
import threading
|
|
import time
|
|
|
|
from optparse import OptionParser
|
|
|
|
#####################################################################
|
|
# Utility functions
|
|
#####################################################################
|
|
def run(args, stdin=None):
|
|
class ThreadWorker(threading.Thread):
|
|
def __init__(self, pipe):
|
|
super(ThreadWorker, self).__init__()
|
|
self.all = ""
|
|
self.pipe = pipe
|
|
self.setDaemon(True)
|
|
|
|
def run(self):
|
|
while True:
|
|
line = self.pipe.readline()
|
|
if line == '': break
|
|
else:
|
|
self.all += line
|
|
|
|
try:
|
|
if type(args) == str:
|
|
args = shlex.split(args)
|
|
|
|
args = [str(a) for a in args] # convert to strs
|
|
|
|
stdin_pipe = subprocess.PIPE if stdin else None
|
|
proc = subprocess.Popen(args, stdin=stdin_pipe, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
if stdin_pipe:
|
|
proc.stdin.write(stdin)
|
|
proc.stdin.close()
|
|
|
|
stdout_worker = ThreadWorker(proc.stdout)
|
|
stderr_worker = ThreadWorker(proc.stderr)
|
|
stdout_worker.start()
|
|
stderr_worker.start()
|
|
|
|
proc.wait()
|
|
stdout_worker.join()
|
|
stderr_worker.join()
|
|
|
|
except KeyboardInterrupt, e:
|
|
sys.exit(-1)
|
|
|
|
stdout, stderr = stdout_worker.all, stderr_worker.all
|
|
result = (stdout, stderr, proc.returncode)
|
|
return result
|
|
|
|
def get_js_files():
|
|
(out, err, exit) = run('find ../jit-test/tests -name "*.js"')
|
|
if (err, exit) != ("", 0):
|
|
sys.exit("Wrong directory, run from an objdir")
|
|
return out.split()
|
|
|
|
|
|
|
|
#####################################################################
|
|
# Blacklisting
|
|
#####################################################################
|
|
def in_blacklist(sig):
|
|
return sig in blacklist
|
|
|
|
def add_to_blacklist(sig):
|
|
blacklist[sig] = blacklist.get(sig, 0)
|
|
blacklist[sig] += 1
|
|
|
|
# How often is a particular lines important for this.
|
|
def count_lines():
|
|
"""Keep track of the amount of times individual lines occur, in order to
|
|
prioritize the errors which occur most frequently."""
|
|
counts = {}
|
|
for string,count in blacklist.items():
|
|
for line in string.split("\n"):
|
|
counts[line] = counts.get(line, 0) + count
|
|
|
|
lines = []
|
|
for k,v in counts.items():
|
|
lines.append("%6d: %s" % (v,k))
|
|
|
|
lines.sort()
|
|
|
|
countlog = file("../OOM_count_log", "w")
|
|
countlog.write("\n".join(lines))
|
|
countlog.flush()
|
|
countlog.close()
|
|
|
|
|
|
#####################################################################
|
|
# Output cleaning
|
|
#####################################################################
|
|
def clean_voutput(err):
|
|
# Skip what we can't reproduce
|
|
err = re.sub(r"^--\d+-- run: /usr/bin/dsymutil \"shell/js\"$", "", err, flags=re.MULTILINE)
|
|
err = re.sub(r"^==\d+==", "", err, flags=re.MULTILINE)
|
|
err = re.sub(r"^\*\*\d+\*\*", "", err, flags=re.MULTILINE)
|
|
err = re.sub(r"^\s+by 0x[0-9A-Fa-f]+: ", "by: ", err, flags=re.MULTILINE)
|
|
err = re.sub(r"^\s+at 0x[0-9A-Fa-f]+: ", "at: ", err, flags=re.MULTILINE)
|
|
err = re.sub(r"(^\s+Address 0x)[0-9A-Fa-f]+( is not stack'd)", r"\1\2", err, flags=re.MULTILINE)
|
|
err = re.sub(r"(^\s+Invalid write of size )\d+", r"\1x", err, flags=re.MULTILINE)
|
|
err = re.sub(r"(^\s+Invalid read of size )\d+", r"\1x", err, flags=re.MULTILINE)
|
|
err = re.sub(r"(^\s+Address 0x)[0-9A-Fa-f]+( is )\d+( bytes inside a block of size )[0-9,]+( free'd)", r"\1\2\3\4", err, flags=re.MULTILINE)
|
|
|
|
# Skip the repeating bit due to the segfault
|
|
lines = []
|
|
for l in err.split('\n'):
|
|
if l == " Process terminating with default action of signal 11 (SIGSEGV)":
|
|
break
|
|
lines.append(l)
|
|
err = '\n'.join(lines)
|
|
|
|
return err
|
|
|
|
def remove_failed_allocation_backtraces(err):
|
|
lines = []
|
|
|
|
add = True
|
|
for l in err.split('\n'):
|
|
|
|
# Set start and end conditions for including text
|
|
if l == " The site of the failed allocation is:":
|
|
add = False
|
|
elif l[:2] not in ['by: ', 'at:']:
|
|
add = True
|
|
|
|
if add:
|
|
lines.append(l)
|
|
|
|
|
|
err = '\n'.join(lines)
|
|
|
|
return err
|
|
|
|
|
|
def clean_output(err):
|
|
err = re.sub(r"^js\(\d+,0x[0-9a-f]+\) malloc: \*\*\* error for object 0x[0-9a-f]+: pointer being freed was not allocated\n\*\*\* set a breakppoint in malloc_error_break to debug\n$", "pointer being freed was not allocated", err, flags=re.MULTILINE)
|
|
|
|
return err
|
|
|
|
|
|
#####################################################################
|
|
# Consts, etc
|
|
#####################################################################
|
|
|
|
command_template = 'shell/js' \
|
|
+ ' -m -j -p' \
|
|
+ ' -e "const platform=\'darwin\'; const libdir=\'../jit-test/lib/\';"' \
|
|
+ ' -f ../jit-test/lib/prolog.js' \
|
|
+ ' -f %s'
|
|
|
|
|
|
# Blacklists are things we don't want to see in our logs again (though we do
|
|
# want to count them when they happen). Whitelists we do want to see in our
|
|
# logs again, principally because the information we have isn't enough.
|
|
|
|
blacklist = {}
|
|
add_to_blacklist(r"('', '', 1)") # 1 means OOM if the shell hasn't launched yet.
|
|
add_to_blacklist(r"('', 'out of memory\n', 1)")
|
|
|
|
whitelist = set()
|
|
whitelist.add(r"('', 'out of memory\n', -11)") # -11 means OOM
|
|
whitelist.add(r"('', 'out of memory\nout of memory\n', -11)")
|
|
|
|
|
|
|
|
#####################################################################
|
|
# Program
|
|
#####################################################################
|
|
|
|
# Options
|
|
parser = OptionParser(usage=usage)
|
|
parser.add_option("-r", "--regression", action="store", metavar="REGRESSION_COUNT", help=help,
|
|
type="int", dest="regression", default=None)
|
|
|
|
(OPTIONS, args) = parser.parse_args()
|
|
|
|
|
|
if OPTIONS.regression != None:
|
|
# TODO: This should be expanded as we get a better hang of the OOM problems.
|
|
# For now, we'll just check that the number of OOMs in one short file does not
|
|
# increase.
|
|
files = ["../jit-test/tests/arguments/args-createontrace.js"]
|
|
else:
|
|
files = get_js_files()
|
|
|
|
# Use a command-line arg to reduce the set of files
|
|
if len (args):
|
|
files = [f for f in files if f.find(args[0]) != -1]
|
|
|
|
|
|
if OPTIONS.regression == None:
|
|
# Don't use a logfile, this is automated for tinderbox.
|
|
log = file("../OOM_log", "w")
|
|
|
|
|
|
num_failures = 0
|
|
for f in files:
|
|
|
|
# Run it once to establish boundaries
|
|
command = (command_template + ' -O') % (f)
|
|
out, err, exit = run(command)
|
|
max = re.match(".*OOM max count: (\d+).*", out, flags=re.DOTALL).groups()[0]
|
|
max = int(max)
|
|
|
|
# OOMs don't recover well for the first 20 allocations or so.
|
|
# TODO: revisit this.
|
|
for i in range(20, max):
|
|
|
|
if OPTIONS.regression == None:
|
|
print "Testing allocation %d/%d in %s" % (i,max,f)
|
|
else:
|
|
sys.stdout.write('.') # something short for tinderbox, no space or \n
|
|
|
|
command = (command_template + ' -A %d') % (f, i)
|
|
out, err, exit = run(command)
|
|
|
|
# Success (5 is SM's exit code for controlled errors)
|
|
if exit == 5 and err.find("out of memory") != -1:
|
|
continue
|
|
|
|
# Failure
|
|
else:
|
|
|
|
if OPTIONS.regression != None:
|
|
# Just count them
|
|
num_failures += 1
|
|
continue
|
|
|
|
#########################################################################
|
|
# The regression tests ends above. The rest of this is for running the
|
|
# script manually.
|
|
#########################################################################
|
|
|
|
problem = str((out, err, exit))
|
|
if in_blacklist(problem) and problem not in whitelist:
|
|
add_to_blacklist(problem)
|
|
continue
|
|
|
|
add_to_blacklist(problem)
|
|
|
|
|
|
# Get valgrind output for a good stack trace
|
|
vcommand = "valgrind --dsymutil=yes -q --log-file=OOM_valgrind_log_file " + command
|
|
run(vcommand)
|
|
vout = file("OOM_valgrind_log_file").read()
|
|
vout = clean_voutput(vout)
|
|
sans_alloc_sites = remove_failed_allocation_backtraces(vout)
|
|
|
|
# Don't print duplicate information
|
|
if in_blacklist(sans_alloc_sites):
|
|
add_to_blacklist(sans_alloc_sites)
|
|
continue
|
|
|
|
add_to_blacklist(sans_alloc_sites)
|
|
|
|
log.write ("\n")
|
|
log.write ("\n")
|
|
log.write ("=========================================================================")
|
|
log.write ("\n")
|
|
log.write ("An allocation failure at\n\tallocation %d/%d in %s\n\tcauses problems (detected using bug 624094)" % (i, max, f))
|
|
log.write ("\n")
|
|
log.write ("\n")
|
|
|
|
log.write ("Command (from obj directory, using patch from bug 624094):\n " + command)
|
|
log.write ("\n")
|
|
log.write ("\n")
|
|
log.write ("stdout, stderr, exitcode:\n " + problem)
|
|
log.write ("\n")
|
|
log.write ("\n")
|
|
|
|
double_free = err.find("pointer being freed was not allocated") != -1
|
|
oom_detected = err.find("out of memory") != -1
|
|
multiple_oom_detected = err.find("out of memory\nout of memory") != -1
|
|
segfault_detected = exit == -11
|
|
|
|
log.write ("Diagnosis: ")
|
|
log.write ("\n")
|
|
if multiple_oom_detected:
|
|
log.write (" - Multiple OOMs reported")
|
|
log.write ("\n")
|
|
if segfault_detected:
|
|
log.write (" - segfault")
|
|
log.write ("\n")
|
|
if not oom_detected:
|
|
log.write (" - No OOM checking")
|
|
log.write ("\n")
|
|
if double_free:
|
|
log.write (" - Double free")
|
|
log.write ("\n")
|
|
|
|
log.write ("\n")
|
|
|
|
log.write ("Valgrind info:\n" + vout)
|
|
log.write ("\n")
|
|
log.write ("\n")
|
|
log.flush()
|
|
|
|
if OPTIONS.regression == None:
|
|
count_lines()
|
|
|
|
print '\n',
|
|
|
|
# Do the actual regression check
|
|
if OPTIONS.regression != None:
|
|
expected_num_failures = OPTIONS.regression
|
|
|
|
if num_failures != expected_num_failures:
|
|
|
|
print "TEST-UNEXPECTED-FAIL |",
|
|
if num_failures > expected_num_failures:
|
|
print "More out-of-memory errors were found (%s) than expected (%d). This probably means an allocation site has been added without a NULL-check. If this is unavoidable, you can account for it by updating Makefile.in." % (num_failures, expected_num_failures),
|
|
else:
|
|
print "Congratulations, you have removed %d out-of-memory error(s) (%d remain)! Please account for it by updating Makefile.in." % (expected_num_failures - num_failures, num_failures),
|
|
sys.exit(-1)
|
|
else:
|
|
print 'TEST-PASS | find_OOM_errors | Found the expected number of OOM errors (%d)' % (expected_num_failures)
|
|
|