Message 61880 - Python tracker

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Author	dugang@188.com
Recipients	dugang@188.com
Date	2008-01-30.22:58:27
SpamBayes Score	0.00493661
Marked as misclassified	No
Message-id	<1201733914.21.0.052632860787.issue1978@psf.upfronthosting.co.za>
In-reply-to

Content
Python-2.5.1 will be crashed when i use _ssl module in multi-threads environment in linux. the sample code looks as below(A https server is running on host which ip is "192.168.5.151" and many certificates and keys in PEM format are in the directory "./cert". These certificates and keys are ok because i can use them in a web browser like IE/ Firefox.): ------------------------------------------------------------------------ ------ #! /home/duxg/Download/soft/Python-2.5.1/python # # filename: test.py # '''This script simulates the behaviors of a https client.''' import threading import httplib class HTTPSClient(threading.Thread): def __init__(self, server_ip, url, cert_file, key_file): threading.Thread.__init__(self) # get run parameters self.server_ip = server_ip self.url = url self.cert_file = cert_file self.key_file = key_file def get(self): # make headers headers = {'User-Agent': 'https_test/dugang@188.com', 'Connection': 'close' } # use httplib conn = httplib.HTTPSConnection('%s' % self.server_ip, \ key_file = self.key_file, \ cert_file = self.cert_file) # http get conn.request('GET', self.url, headers = headers) resp = conn.getresponse() # check response if resp.status != 200: print 'get(%s) failed/status=%d.' % (self.url, resp.status) return False return True def run(self): while True: self.get() def main(): worker_number = 100 threading.stack_size(512 * 1024) worker = [] for i in range(worker_number): # create worker thread worker.append(HTTPSClient('192.168.5.151', '/test.html', \ './cert/testu%d.cert' % i, \ './cert/testu%d.key' % i)) for w in worker: # go w.start() for w in worker: # wait w.join() main() ------------------------------------------------------------------------ ------ This code will be produced a lot of exceptions and finally it will cause Python crashed. ------------------------------------------------------------------------ ------ Exception in thread Thread-19: Traceback (most recent call last): File "/home/duxg/Download/soft/Python-2.5.1/Lib/threading.py", line 460, in __bootstrap self.run() File "./test.py", line 39, in run self.get() File "./test.py", line 29, in get conn.request('GET', self.url, headers = headers) File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 862, in request self._send_request(method, url, body, headers) File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 885, in _send_request self.endheaders() File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 856, in endheaders self._send_output() File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 728, in _send_output self.send(msg) File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 695, in send self.connect() File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 1131, in connect ssl = socket.ssl(sock, self.key_file, self.cert_file) File "/home/duxg/Download/soft/Python-2.5.1/Lib/socket.py", line 74, in ssl return _realssl(sock, keyfile, certfile) sslerror: SSL_CTX_use_certificate_chain_file error ... * glibc detected * /home/duxg/Download/soft/Python-2.5.1/python: double free or corruption (!prev): 0x0a2b71a0 *** ======= Backtrace: ========= /lib/libc.so.6[0x887f41] /lib/libc.so.6(cfree+0x90)[0x88b580] /lib/libcrypto.so.6(CRYPTO_free+0x3a)[0x14f46a] /lib/libcrypto.so.6(ERR_clear_error+0x73)[0x1a4d13] /lib/libssl.so.6(SSL_CTX_use_certificate_chain_file+0x227)[0x358e47] /home/duxg/Download/soft/Python-2.5.1/build/lib.linux-i686-2.5/ _ssl.so[0xb9eb9e] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x5d2c)[0x80c539c] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalCodeEx+0x775)[0x80c65d5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x5419)[0x80c4a89] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x6155)[0x80c57c5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x6155)[0x80c57c5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x6155)[0x80c57c5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x6155)[0x80c57c5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x6155)[0x80c57c5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalCodeEx+0x775)[0x80c65d5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x5419)[0x80c4a89] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x6155)[0x80c57c5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalFrameEx+0x6155)[0x80c57c5] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_EvalCodeEx+0x775)[0x80c65d5] /home/duxg/Download/soft/Python-2.5.1/python[0x810d6f1] /home/duxg/Download/soft/Python-2.5.1/ python(PyObject_Call+0x27)[0x805a277] /home/duxg/Download/soft/Python-2.5.1/python[0x80603a7] /home/duxg/Download/soft/Python-2.5.1/ python(PyObject_Call+0x27)[0x805a277] /home/duxg/Download/soft/Python-2.5.1/ python(PyEval_CallObjectWithKeywords+0x6c)[0x80be7cc] /home/duxg/Download/soft/Python-2.5.1/python[0x80f01e8] /lib/libpthread.so.0[0xc292fb] /lib/libc.so.6(clone+0x5e)[0x8f093e] ======= Memory map: ======== 00110000-00113000 r-xp 00000000 08:05 2417874 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/time.so 00113000-00115000 rwxp 00002000 08:05 2417874 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/time.so 00115000-00119000 r-xp 00000000 08:05 2417882 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/collections.so 00119000-0011a000 rwxp 00004000 08:05 2417882 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/collections.so 0011a000-0011c000 r-xp 00000000 08:05 2417878 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/_random.so 0011c000-0011d000 rwxp 00002000 08:05 2417878 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/_random.so 0011d000-00239000 r-xp 00000000 08:03 491746 /lib/ libcrypto.so.0.9.8b 00239000-0024b000 rwxp 0011c000 08:03 491746 /lib/ libcrypto.so.0.9.8b 0024b000-0024f000 rwxp 0024b000 00:00 0 0024f000-0027b000 r-xp 00000000 08:09 623501 /usr/lib/ libgssapi_krb5.so.2.2 0027b000-0027c000 rwxp 0002c000 08:09 623501 /usr/lib/ libgssapi_krb5.so.2.2 0027c000-0027e000 r-xp 00000000 08:03 491630 /lib/libkeyutils-1.2.so 0027e000-0027f000 rwxp 00001000 08:03 491630 /lib/libkeyutils-1.2.so 00287000-00288000 r-xp 00287000 00:00 0 [vdso] 00288000-00317000 r-xp 00000000 08:09 623515 /usr/lib/libkrb5.so.3.3 00317000-00319000 rwxp 0008f000 08:09 623515 /usr/lib/libkrb5.so.3.3 00319000-00324000 r-xp 00000000 08:03 491522 /lib/libgcc_s-4.1.2- 20070503.so.1 00324000-00325000 rwxp 0000a000 08:03 491522 /lib/libgcc_s-4.1.2- 20070503.so.1 00328000-00369000 r-xp 00000000 08:03 491748 /lib/libssl.so.0.9.8b 00369000-0036d000 rwxp 00040000 08:03 491748 /lib/libssl.so.0.9.8b 003c8000-003ca000 r-xp 00000000 08:03 491577 /lib/libutil-2.6.so 003ca000-003cb000 r-xp 00001000 08:03 491577 /lib/libutil-2.6.so 003cb000-003cc000 rwxp 00002000 08:03 491577 /lib/libutil-2.6.so 00433000-00436000 r-xp 00000000 08:03 491551 /lib/libdl-2.6.so 00436000-00437000 r-xp 00002000 08:03 491551 /lib/libdl-2.6.so 00437000-00438000 rwxp 00003000 08:03 491551 /lib/libdl-2.6.so 00478000-0049f000 r-xp 00000000 08:03 491553 /lib/libm-2.6.so 0049f000-004a0000 r-xp 00026000 08:03 491553 /lib/libm-2.6.so 004a0000-004a1000 rwxp 00027000 08:03 491553 /lib/libm-2.6.so 004f4000-00506000 r-xp 00000000 08:03 491595 /lib/libz.so.1.2.3 00506000-00507000 rwxp 00011000 08:03 491595 /lib/libz.so.1.2.3 00581000-00591000 r-xp 00000000 08:03 491571 /lib/libresolv-2.6.so 00591000-00592000 r-xp 0000f000 08:03 491571 /lib/libresolv-2.6.so 00592000-00593000 rwxp 00010000 08:03 491571 /lib/libresolv-2.6.so 00593000-00595000 rwxp 00593000 00:00 0 005d7000-005d9000 r-xp 00000000 08:05 2417903 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/fcntl.so 005d9000-005da000 rwxp 00002000 08:05 2417903 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/fcntl.so 00651000-00654000 r-xp 00000000 08:05 2417915 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/cStringIO.so 00654000-00655000 rwxp 00003000 08:05 2417915 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/cStringIO.so 00734000-0073d000 r-xp 00000000 08:05 2417935 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/_socket.so 0073d000-00740000 rwxp 00009000 08:05 2417935 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/_socket.so 00820000-0096e000 r-xp 00000000 08:03 491545 /lib/libc-2.6.so 0096e000-00970000 r-xp 0014e000 08:03 491545 /lib/libc-2.6.so 00970000-00971000 rwxp 00150000 08:03 491545 /lib/libc-2.6.so 00971000-00974000 rwxp 00971000 00:00 0 009a7000-009a9000 r-xp 00000000 08:05 2417870 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/math.so 009a9000-009aa000 rwxp 00002000 08:05 2417870 /home/duxg/Download/ soft/Python-2.5.1/build/lib.linux-i686-2.5/math.so 00b11000-0Aborted (core dumped) ------------------------------------------------------------------------ ------ I think the problem is in that the _ssl module does not correctly initialize the OpenSSL Library, so i make a patch to fix it. now it seems worked well.

Python-2.5.1 will be crashed when i use _ssl module in multi-threads 
environment in linux. the sample code looks as below(A https server is 
running on host which ip is "192.168.5.151" and many certificates and 
keys in PEM format are in the directory "./cert". These certificates 
and keys are ok because i can use them in a web browser like IE/
Firefox.):

------------------------------------------------------------------------
------
#! /home/duxg/Download/soft/Python-2.5.1/python
#
#   filename: test.py
#
'''This script simulates the behaviors of a https client.'''

import threading
import httplib

class HTTPSClient(threading.Thread):
    def __init__(self, server_ip, url, cert_file, key_file):
        threading.Thread.__init__(self)
        # get run parameters 
        self.server_ip = server_ip
        self.url = url 
        self.cert_file = cert_file
        self.key_file = key_file

    def get(self):
        # make headers
        headers = {'User-Agent': 'https_test/dugang@188.com', 
                   'Connection': 'close'
                  }
        # use httplib
        conn = httplib.HTTPSConnection('%s' % self.server_ip, \
                                       key_file = self.key_file, \
                                       cert_file = self.cert_file)
        # http get
        conn.request('GET', self.url, headers = headers)
        resp = conn.getresponse()
        # check response
        if resp.status != 200:
            print 'get(%s) failed/status=%d.' % (self.url, resp.status)
            return False
        return True
    
    def run(self):
        while True:
            self.get()

def main():
    worker_number = 100

    threading.stack_size(512 * 1024)
    worker = []
    for i in range(worker_number):
        # create worker thread
        worker.append(HTTPSClient('192.168.5.151', '/test.html', \
                                  './cert/testu%d.cert' % i, \
                                  './cert/testu%d.key' % i))
    for w in worker:
        # go
        w.start()
    for w in worker:
        # wait
        w.join()

main()
------------------------------------------------------------------------
------

  This code will be produced a lot of exceptions and finally it will 
cause Python crashed.

------------------------------------------------------------------------
------
Exception in thread Thread-19:
Traceback (most recent call last):
  File "/home/duxg/Download/soft/Python-2.5.1/Lib/threading.py", line 
460, in __bootstrap
    self.run()
  File "./test.py", line 39, in run
    self.get()
  File "./test.py", line 29, in get
    conn.request('GET', self.url, headers = headers)
  File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 
862, in request
    self._send_request(method, url, body, headers)
  File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 
885, in _send_request
    self.endheaders()
  File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 
856, in endheaders
    self._send_output()
  File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 
728, in _send_output
    self.send(msg)
  File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 
695, in send
    self.connect()
  File "/home/duxg/Download/soft/Python-2.5.1/Lib/httplib.py", line 
1131, in connect
    ssl = socket.ssl(sock, self.key_file, self.cert_file)
  File "/home/duxg/Download/soft/Python-2.5.1/Lib/socket.py", line 74, 
in ssl
    return _realssl(sock, keyfile, certfile)
sslerror: SSL_CTX_use_certificate_chain_file error

...

*** glibc detected *** /home/duxg/Download/soft/Python-2.5.1/python: 
double free or corruption (!prev): 0x0a2b71a0 ***
======= Backtrace: =========
/lib/libc.so.6[0x887f41]
/lib/libc.so.6(cfree+0x90)[0x88b580]
/lib/libcrypto.so.6(CRYPTO_free+0x3a)[0x14f46a]
/lib/libcrypto.so.6(ERR_clear_error+0x73)[0x1a4d13]
/lib/libssl.so.6(SSL_CTX_use_certificate_chain_file+0x227)[0x358e47]
/home/duxg/Download/soft/Python-2.5.1/build/lib.linux-i686-2.5/
_ssl.so[0xb9eb9e]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x5d2c)[0x80c539c]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalCodeEx+0x775)[0x80c65d5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x5419)[0x80c4a89]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x6155)[0x80c57c5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x6155)[0x80c57c5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x6155)[0x80c57c5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x6155)[0x80c57c5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x6155)[0x80c57c5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalCodeEx+0x775)[0x80c65d5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x5419)[0x80c4a89]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x6155)[0x80c57c5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalFrameEx+0x6155)[0x80c57c5]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_EvalCodeEx+0x775)[0x80c65d5]
/home/duxg/Download/soft/Python-2.5.1/python[0x810d6f1]
/home/duxg/Download/soft/Python-2.5.1/
python(PyObject_Call+0x27)[0x805a277]
/home/duxg/Download/soft/Python-2.5.1/python[0x80603a7]
/home/duxg/Download/soft/Python-2.5.1/
python(PyObject_Call+0x27)[0x805a277]
/home/duxg/Download/soft/Python-2.5.1/
python(PyEval_CallObjectWithKeywords+0x6c)[0x80be7cc]
/home/duxg/Download/soft/Python-2.5.1/python[0x80f01e8]
/lib/libpthread.so.0[0xc292fb]
/lib/libc.so.6(clone+0x5e)[0x8f093e]
======= Memory map: ========
00110000-00113000 r-xp 00000000 08:05 2417874    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/time.so
00113000-00115000 rwxp 00002000 08:05 2417874    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/time.so
00115000-00119000 r-xp 00000000 08:05 2417882    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/collections.so
00119000-0011a000 rwxp 00004000 08:05 2417882    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/collections.so
0011a000-0011c000 r-xp 00000000 08:05 2417878    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/_random.so
0011c000-0011d000 rwxp 00002000 08:05 2417878    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/_random.so
0011d000-00239000 r-xp 00000000 08:03 491746     /lib/
libcrypto.so.0.9.8b
00239000-0024b000 rwxp 0011c000 08:03 491746     /lib/
libcrypto.so.0.9.8b
0024b000-0024f000 rwxp 0024b000 00:00 0 
0024f000-0027b000 r-xp 00000000 08:09 623501     /usr/lib/
libgssapi_krb5.so.2.2
0027b000-0027c000 rwxp 0002c000 08:09 623501     /usr/lib/
libgssapi_krb5.so.2.2
0027c000-0027e000 r-xp 00000000 08:03 491630     /lib/libkeyutils-1.2.so
0027e000-0027f000 rwxp 00001000 08:03 491630     /lib/libkeyutils-1.2.so
00287000-00288000 r-xp 00287000 00:00 0          [vdso]
00288000-00317000 r-xp 00000000 08:09 623515     /usr/lib/libkrb5.so.3.3
00317000-00319000 rwxp 0008f000 08:09 623515     /usr/lib/libkrb5.so.3.3
00319000-00324000 r-xp 00000000 08:03 491522     /lib/libgcc_s-4.1.2-
20070503.so.1
00324000-00325000 rwxp 0000a000 08:03 491522     /lib/libgcc_s-4.1.2-
20070503.so.1
00328000-00369000 r-xp 00000000 08:03 491748     /lib/libssl.so.0.9.8b
00369000-0036d000 rwxp 00040000 08:03 491748     /lib/libssl.so.0.9.8b
003c8000-003ca000 r-xp 00000000 08:03 491577     /lib/libutil-2.6.so
003ca000-003cb000 r-xp 00001000 08:03 491577     /lib/libutil-2.6.so
003cb000-003cc000 rwxp 00002000 08:03 491577     /lib/libutil-2.6.so
00433000-00436000 r-xp 00000000 08:03 491551     /lib/libdl-2.6.so
00436000-00437000 r-xp 00002000 08:03 491551     /lib/libdl-2.6.so
00437000-00438000 rwxp 00003000 08:03 491551     /lib/libdl-2.6.so
00478000-0049f000 r-xp 00000000 08:03 491553     /lib/libm-2.6.so
0049f000-004a0000 r-xp 00026000 08:03 491553     /lib/libm-2.6.so
004a0000-004a1000 rwxp 00027000 08:03 491553     /lib/libm-2.6.so
004f4000-00506000 r-xp 00000000 08:03 491595     /lib/libz.so.1.2.3
00506000-00507000 rwxp 00011000 08:03 491595     /lib/libz.so.1.2.3
00581000-00591000 r-xp 00000000 08:03 491571     /lib/libresolv-2.6.so
00591000-00592000 r-xp 0000f000 08:03 491571     /lib/libresolv-2.6.so
00592000-00593000 rwxp 00010000 08:03 491571     /lib/libresolv-2.6.so
00593000-00595000 rwxp 00593000 00:00 0 
005d7000-005d9000 r-xp 00000000 08:05 2417903    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/fcntl.so
005d9000-005da000 rwxp 00002000 08:05 2417903    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/fcntl.so
00651000-00654000 r-xp 00000000 08:05 2417915    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/cStringIO.so
00654000-00655000 rwxp 00003000 08:05 2417915    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/cStringIO.so
00734000-0073d000 r-xp 00000000 08:05 2417935    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/_socket.so
0073d000-00740000 rwxp 00009000 08:05 2417935    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/_socket.so
00820000-0096e000 r-xp 00000000 08:03 491545     /lib/libc-2.6.so
0096e000-00970000 r-xp 0014e000 08:03 491545     /lib/libc-2.6.so
00970000-00971000 rwxp 00150000 08:03 491545     /lib/libc-2.6.so
00971000-00974000 rwxp 00971000 00:00 0 
009a7000-009a9000 r-xp 00000000 08:05 2417870    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/math.so
009a9000-009aa000 rwxp 00002000 08:05 2417870    /home/duxg/Download/
soft/Python-2.5.1/build/lib.linux-i686-2.5/math.so
00b11000-0Aborted (core dumped)
------------------------------------------------------------------------
------

    I think the problem is in that the _ssl module does not correctly 
initialize the OpenSSL Library, so i make a patch to fix it. now it 
seems worked well.

History
Date	User	Action	Args
2008-01-30 22:58:34	dugang@188.com	set	spambayes_score: 0.00493661 -> 0.00493661 recipients: + dugang@188.com
2008-01-30 22:58:34	dugang@188.com	set	spambayes_score: 0.00493661 -> 0.00493661 messageid: <1201733914.21.0.052632860787.issue1978@psf.upfronthosting.co.za>
2008-01-30 22:58:31	dugang@188.com	link	issue1978 messages
2008-01-30 22:58:28	dugang@188.com	create