Your message dated Thu, 09 Jun 2016 17:04:21 +0000 with message-id <[email protected]> and subject line Bug#824379: fixed in python3.5 3.5.1-14 has caused the Debian Bug report #824379, regarding python3.5: regression in -11: always calls getrandom() at start, causing long hang after boot to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 824379: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824379 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: python3.5 Version: 3.5.1-11 Severity: important I just debugged the adt-virt-qemu failure with python 3.5.1-11 and tracked it down to python3.5 hanging for a long time when it gets called before the kernel initializes its RNG (which can take a minute in VMs which have low entropy sources). With 3.5.1-10: $ strace -e getrandom python3 -c 'True' +++ exited with 0 +++ With -11: $ strace -e getrandom python3 -c 'True' getrandom("\300\0209\26&v\232\264\325\217\322\303:]\30\212Q\314\244\257t%\206\"", 24, 0) = 24 +++ exited with 0 +++ When you do this with -11 right after booting a VM, the getrandom() can block for a long time, until the kernel initializes its random pool: 11:21:36.118034 getrandom("/V#\200^O*HD+D_\32\345\223M\205a\336/\36x\335\246", 24, 0) = 24 11:21:57.939999 ioctl(0, TCGETS, 0x7ffde1d152a0) = -1 ENOTTY (Inappropriate ioctl for device) [ 1.549882] [TTM] Initializing DMA pool allocator [ 39.586483] random: nonblocking pool is initialized (Note the time stamps in the strace in the first paragraph) This is really unfriendly -- it essentially means that you stop being able to use python3 early in the boot process or even early after booting. It would be better to initialize that random stuff lazily, until/if things actually need it. In the diff between -10 and -11 I do seem some getrandom() fixes to supply the correct buffer size (but that should be irrelevant as in -10 getrandom() wasn't called in the first place), and a new call which should apply to Solaris only (#ifdef sun), so it's not entirely clear where that comes from or how to work around it. It's very likely that this is the same cause as for #821877, but the description of that is both completely different and also very vague, so I file this separately for now. Martin -- Martin Pitt | http://www.piware.de Ubuntu Developer (www.ubuntu.com) | Debian Developer (www.debian.org)
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--- Begin Message ---Source: python3.5 Source-Version: 3.5.1-14 We believe that the bug you reported is fixed in the latest version of python3.5, which is due to be installed in the Debian FTP archive. A summary of the changes between this version and the previous one is attached. Thank you for reporting the bug, which will now be closed. If you have further comments please address them to [email protected], and the maintainer will reopen the bug report if appropriate. Debian distribution maintenance software pp. Matthias Klose <[email protected]> (supplier of updated python3.5 package) (This message was generated automatically at their request; if you believe that there is a problem with it please contact the archive administrators by mailing [email protected]) -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Format: 1.8 Date: Thu, 09 Jun 2016 17:41:54 +0200 Source: python3.5 Binary: python3.5 python3.5-venv libpython3.5-stdlib python3.5-minimal libpython3.5-minimal libpython3.5 python3.5-examples python3.5-dev libpython3.5-dev libpython3.5-testsuite idle-python3.5 python3.5-doc python3.5-dbg libpython3.5-dbg Architecture: source Version: 3.5.1-14 Distribution: unstable Urgency: medium Maintainer: Matthias Klose <[email protected]> Changed-By: Matthias Klose <[email protected]> Description: idle-python3.5 - IDE for Python (v3.5) using Tkinter libpython3.5 - Shared Python runtime library (version 3.5) libpython3.5-dbg - Debug Build of the Python Interpreter (version 3.5) libpython3.5-dev - Header files and a static library for Python (v3.5) libpython3.5-minimal - Minimal subset of the Python language (version 3.5) libpython3.5-stdlib - Interactive high-level object-oriented language (standard library libpython3.5-testsuite - Testsuite for the Python standard library (v3.5) python3.5 - Interactive high-level object-oriented language (version 3.5) python3.5-dbg - Debug Build of the Python Interpreter (version 3.5) python3.5-dev - Header files and a static library for Python (v3.5) python3.5-doc - Documentation for the high-level object-oriented language Python python3.5-examples - Examples for the Python language (v3.5) python3.5-minimal - Minimal subset of the Python language (version 3.5) python3.5-venv - Interactive high-level object-oriented language (pyvenv binary, v Closes: 824379 Changes: python3.5 (3.5.1-14) unstable; urgency=medium . * Update to 20160609 from the 3.5 branch. - A new version of typing.py provides several new classes and features: @overload outside stubs, Reversible, DefaultDict, Text, ContextManager, Type[], NewType(), TYPE_CHECKING, and numerous bug fixes (note that some of the new features are not yet implemented in mypy or other static analyzers). Also classes for PEP 492 (Awaitable, AsyncIterable, AsyncIterator) have been added (in fact they made it into 3.5.1 but were never mentioned). - Issue #25738: Stop http.server.BaseHTTPRequestHandler.send_error() from sending a message body for 205 Reset Content. Also, don't send Content header fields in responses that don't have a body. - Issue #21313: Fix the "platform" module to tolerate when sys.version contains truncated build information. - Issue #26839: On Linux, :func:`os.urandom` now calls ``getrandom()`` with ``GRND_NONBLOCK`` to fall back on reading ``/dev/urandom`` if the urandom entropy pool is not initialized yet. Closes: #824379. - Issue #27164: In the zlib module, allow decompressing raw Deflate streams with a predefined zdict. - Issue #24291: Fix wsgiref.simple_server.WSGIRequestHandler to completely write data to the client. Previously it could do partial writes and truncate data. Also, wsgiref.handler.ServerHandler can now handle stdout doing partial writes, but this is deprecated. - Issue #26809: Add ``__all__`` to :mod:`string`. - Issue #26373: subprocess.Popen.communicate now correctly ignores BrokenPipeError when the child process dies before .communicate() is called in more/all circumstances. - Issue #24759: Make clear in idlelib.idle_test.__init__ that the directory is a private implementation of test.test_idle and tool for maintainers. - Issue #27196: Stop 'ThemeChanged' warnings when running IDLE tests. These persisted after other warnings were suppressed in #20567. - Issue #20567: Revise idle_test/README.txt with advice about avoiding tk warning messages from tests. Apply advice to several IDLE tests. - Issue #26884: Fix linking extension modules for cross builds. - Issue #26014: Update 3.x packaging documentation: * "See also" links to the new docs are now provided in the legacy pages * links to setuptools documentation have been updated - Issue #27229: Fix the cross-compiling pgen rule for in-tree builds. * Don't run multiprocessing tests during the profiling build. 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