Bug 619743
| Summary: | ssl_example.py fails with MemoryError on ppc64 and s390x | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Eduard Benes <ebenes> |
| Component: | python-nss | Assignee: | John Dennis <jdennis> |
| Status: | CLOSED ERRATA | QA Contact: | Aleš Mareček <amarecek> |
| Severity: | medium | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.0 | CC: | amarecek, dpal, fnadge, snagar |
| Target Milestone: | rc | Keywords: | Rebase |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | python-nss-0.11-3.el6 | Doc Type: | Rebase: Bug Fixes and Enhancements |
| Doc Text: |
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Cause
What actions or circumstances cause this bug to present.
Consequence
What happens when the bug presents.
Fix
What was done to fix the bug.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-05-19 13:35:18 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 580448, 642407 | ||
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This field is the basis of the errata or release note for this bug. It can also be used for change logs.
The Technical Note template, known as CCFR, is as follows:
Cause
What actions or circumstances cause this bug to present.
Consequence
What happens when the bug presents.
Fix
What was done to fix the bug.
Cause: CPython modules (Python written in C) use object reference counting to control the lifetime of an object. Some code sequences would cause the object reference count to be computed incorrectly causing an object to be released too soon resulting in a memory error. Consequence: A Python "memory error" exception is raised. Fix: Internal reference counting logic corrected. Result: Memory errors and other anomalies eliminated. An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0607.html |
Description of problem: Running ssl_example.py from the python-nss RPM on ppc64 and s390x fails with MemoryError. This works on i386 and x86_64. <snip> listening on: 0.0.0.0:1234 client connect from: 10.16.113.7:50803 Traceback (most recent call last): File "/usr/share/doc/python-nss-0.8/examples/ssl_example.py", line 352, in <module> Server() File "/usr/share/doc/python-nss-0.8/examples/ssl_example.py", line 237, in Server buf = client_sock.recv(1024) MemoryError </snip> This happens for both io.Socket() and ssl.SSLSocket() in /usr/share/doc/python-nss-0.8/examples/ssl_example.py: 46 import nss.io as io 47 import nss.nss as nss 48 import nss.ssl as ssl ... 200 if use_ssl: 201 sock = ssl.SSLSocket() ... 219 else: 220 sock = io.Socket() 221 222 # Bind to our network address and listen for clients 223 sock.bind(net_addr) 224 print "listening on: %s" % (net_addr) 225 sock.listen() 226 227 while True: 228 # Accept a connection from a client 229 client_sock, client_addr = sock.accept() 230 if use_ssl: 231 client_sock.set_handshake_callback(handshake_callback) 232 ... 235 while True: 236 # Handle the client connection 237 buf = client_sock.recv(1024) <<<<<<< MemoryError Version-Release number of selected component (if applicable): python-nss-0.8-3.el6.s390x How reproducible: always Steps to Reproduce: 1. Follow instruction in "Getting started" section in file:///usr/share/doc/python-nss-0.8/api/html/index.html 2. Run server side: $ python /usr/share/doc/python-nss-0.8/examples/ssl_example.py -S -d ./pki -n myhost 3. Run client side: $ python /usr/share/doc/python-nss-0.8/examples/ssl_example.py -C -d ./pki -n myhost Alternatively you can use RHTS test /CoreOS/python-nss/Sanity/ssl_example. Actual results: Traceback (most recent call last): File "/usr/share/doc/python-nss-0.8/examples/ssl_example.py", line 352, in <module> Server() File "/usr/share/doc/python-nss-0.8/examples/ssl_example.py", line 237, in Server buf = client_sock.recv(1024) MemoryError Expected results: Successful connection and simple message exchange, server received: Hello server, client received: Goodbye. Additional info: