Mirror of roytam1's UXP fork just in case Moonchild and Tobin decide to go after him
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

352 lines
11 KiB

#!/usr/bin/env python
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import print_function
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 as 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("{0:6}: {1}".format(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 {0}'
# 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').format(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 {0}/{1} in {2}".format(i,max,f))
else:
sys.stdout.write('.') # something short for tinderbox, no space or \n
command = (command_template + ' -A {0}').format(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 {0}/{1} in {2}\n\t"
"causes problems (detected using bug 624094)"
.format(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()
# Do the actual regression check
if OPTIONS.regression != None:
expected_num_failures = OPTIONS.regression
if num_failures != expected_num_failures:
print("TEST-UNEXPECTED-FAIL |", end='')
if num_failures > expected_num_failures:
print("More out-of-memory errors were found ({0}) than expected ({1}). "
"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.".format(num_failures, expected_num_failures),
end='')
else:
print("Congratulations, you have removed {0} out-of-memory error(s) "
"({1} remain)! Please account for it by updating Makefile.in."
.format(expected_num_failures - num_failures, num_failures),
end='')
sys.exit(-1)
else:
print('TEST-PASS | find_OOM_errors | Found the expected number of OOM '
'errors ({0})'.format(expected_num_failures))