changeme.py crashed with SIGSEGV

[James Page]

Currently blocking proposed migrations as autopkgtest is failing in the same way

ProblemType: Crash
DistroRelease: Ubuntu 19.10
Package: changeme 1.2.1-1
ProcVersionSignature: Ubuntu 5.3.0-13.14-generic 5.3.0
Uname: Linux 5.3.0-13-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
Date: Mon Oct 7 08:29:05 2019
ExecutablePath: /usr/share/changeme/changeme.py
InterpreterPath: /usr/bin/python3.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 ./changeme.py
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
Python3Details: /usr/bin/python3.7, Python 3.7.5rc1, python3-minimal, 3.7.3-1
PythonDetails: N/A
SegvAnalysis:
 Segfault happened at: 0x7f6da1d4f798: add $0x0,%al
 PC (0x7f6da1d4f798) in non-executable VMA region: 0x7f6da1d19000-0x7f6da1dd9000 rw-p None
 source "$0x0" ok
 destination "%al" ok
SegvReason: executing writable VMA None
Signal: 11
SourcePackage: changeme
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 ?? ()
Title: changeme.py crashed with SIGSEGV
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

separator:

[Apport retracing service (apport)]

StacktraceSource:
 #0 0x00007f6da1d4f798 in ?? ()
 #1 0x00007f6da1d4f798 in ?? ()
 #2 0x00007f6da1d4f798 in ?? ()
 #3 0x0000000000000000 in ?? ()
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 ?? ()

[James Page (james-page)]

Current thread 0x00007fbd53a9a740 (most recent call first):
  File "/usr/lib/python3/dist-packages/pysnmp/carrier/sockmsg.py", line 42 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 728 in exec_module
  File "<frozen importlib._bootstrap>", line 677 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 967 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 983 in _find_and_load
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1035 in _handle_fromlist
  File "/usr/lib/python3/dist-packages/pysnmp/carrier/asyncore/dgram/base.py", line 11 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 728 in exec_module
  File "<frozen importlib._bootstrap>", line 677 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 967 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 983 in _find_and_load
  File "/usr/lib/python3/dist-packages/pysnmp/carrier/asyncore/dgram/udp.py", line 9 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 728 in exec_module
  File "<frozen importlib._bootstrap>", line 677 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 967 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 983 in _find_and_load
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1035 in _handle_fromlist
  File "/usr/lib/python3/dist-packages/pysnmp/entity/config.py", line 8 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 728 in exec_module
  File "<frozen importlib._bootstrap>", line 677 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 967 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 983 in _find_and_load
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1035 in _handle_fromlist
  File "/usr/lib/python3/dist-packages/pysnmp/hlapi/auth.py", line 7 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 728 in exec_module
  File "<frozen importlib._bootstrap>", line 677 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 967 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 983 in _find_and_load
  File "/usr/lib/python3/dist-packages/pysnmp/hlapi/__init__.py", line 10 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 728 in exec_module
  File "<frozen importlib._bootstrap>", line 677 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 967 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 983 in _find_and_l...

[James Page (james-page)]

Reproducer:

>>> import pysnmp.carrier.sockmsg
Segmentation fault (core dumped)

the ctype binding in pysnmp4 seems to be causing the issue

[James Page (james-page)]

This is the offending class:

    class in6_addr_U(ctypes.Union):
        _fields_ = [
            ('__u6_addr8', ctypes.c_uint8 * 16),
            ('__u6_addr16', ctypes.c_uint16 * 8),
            ('__u6_addr32', ctypes.c_uint32 * 4),
        ]

[James Page (james-page)]

https://bugs.python.org/issue38368

[Launchpad Janitor (janitor)]

This bug was fixed in the package python3.7 - 3.7.5~rc1-2

---------------
python3.7 (3.7.5~rc1-2) unstable; urgency=medium

  * Apply proposed patch for issue 38368. LP: #1847036. Closes: #941650.

 -- Matthias Klose <email address hidden> Tue, 08 Oct 2019 18:47:45 +0200

[Łukasz Zemczak (sil2100)]

Hello James, or anyone else affected,

Accepted python3.8 into disco-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/python3.8/3.8.0-1~19.04 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-disco to verification-done-disco. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-disco. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Mathew Hodson (mhodson)]

Fixed in the final release of 3.8.0

[Łukasz Zemczak (sil2100)]

Hello James, or anyone else affected,

Accepted python3.8 into disco-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/python3.8/3.8.0-3~19.04 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-disco to verification-done-disco. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-disco. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Launchpad Janitor (janitor)]

This bug was fixed in the package python3.8 - 3.8.0-3~19.04

---------------
python3.8 (3.8.0-3~19.04) disco-proposed; urgency=medium

  * SRU: LP: #1835737. Backport the final Python 3.8.0 release.

python3.8 (3.8.0-3) unstable; urgency=medium

  * python3.8-dev: Depend on zlib1g-dev, needed to link as an
    embedded interpreter.

python3.8 (3.8.0-2) unstable; urgency=medium

  * Fix a symlink to the shared debug library.
  * Install the python3.8d-embed pkg-config file.
  * Don't ship the python3-embed pkg-config file.

python3.8 (3.8.0-1) unstable; urgency=medium

  * Python 3.8.0 release.

python3.8 (3.8.0~rc1-3) unstable; urgency=medium

  * Apply proposed patch for issue 38368. LP: #1847036. Addresses: #941650.

python3.8 (3.8.0~rc1-2) unstable; urgency=medium

  * Python 3.8.0 release candidate 1.
  * Refresh patches.
  * Update symbols files.
  * Bump standards version.

python3.8 (3.8.0~b4-1) unstable; urgency=medium

  * Python 3.8.0 beta 4 release.

python3.8 (3.8.0~b3-1) unstable; urgency=medium

  * Python 3.8.0 beta 3 release.
  * Fix FTCBFS: (Helmut Grohne). Closes: #932077.
    + Build-Depends, when cross compiling we need python3.8.
    + Export CC, because dtrace needs it.
    + Honour DEB_BUILD_OPTIONS=nocheck more thoroughly.
    + Fix up sysconfigdata-name.diff.
  * Implement the native thread ids for the Hurd and KFreeBSD (Samuel
    Thibault). Closes: #931624.
  * Enable pgo/lto builds on arm64. Addresses: #934812.
  * Update symbols files.
  * Don't propagate lto flags to the _sysconfigdata module. Addresses: #934771.
  * d/patches/issue35998.diff: Disable TLS1.3 in the client on all platforms
    rather than just reducing the payload size (Michael Hudson-Doyle).

python3.8 (3.8.0~b2-5) unstable; urgency=high

  * Bump standards version.
  * Revert the KFreeBSD and Hurd fix for PyThread_get_thread_native_id,
    and use the implementation from Python3.7. Mark the symbol as linux only.
  * Don't encode the MACHDEP into the _sysconfigdata file name.

python3.8 (3.8.0~b2-4) unstable; urgency=medium

  * Fix the LTO build.

python3.8 (3.8.0~b2-3) unstable; urgency=medium

  * Define PY_HAVE_THREAD_NATIVE_ID for KFreeBSD and Hurd builds.
  * Fix issue #37504, building the texinfo docs (Dmitry Shachnev).
  * Enable LTO/PGO builds on some architectures.

python3.8 (3.8.0~b2-1) experimental; urgency=medium

  * Python 3.8.0 beta 2 release.
  * Refresh patches.
  * Update the symbols files.
  * Don't build the texinfo documentation, fails. See issue #37504.

python3.8 (3.8.0~b1-2) experimental; urgency=medium

  * Fix include links in python3.8-dbg.

python3.8 (3.8.0~b1-1) experimental; urgency=medium

  * Python 3.8.0 beta 1 release.
  * Refresh patches.
  * Add new importlib dependencies to python3-minimal.
  * Update symbols files.

python3.8 (3.8.0~a4-3) experimental; urgency=medium

  * Update symbols files.

python3.8 (3.8.0~a4-2) experimental; urgency=medium

  * Update to 20190514 from the trunk.
  * Fix interpreter name in the -dbg autopkg tests.
  * Enable dtrace/USDT probe support (--with-dtrace) and build-dep on
    systemtap-sdt-dev (Trent Lloyd). LP: #1818778.

python3.8 (3.8.0~a4-1) experimental; urgency=medium...

[Łukasz Zemczak (sil2100)]

Hello James, or anyone else affected,

Accepted python3.7 into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/python3.7/3.7.5-2~18.04 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-bionic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Łukasz Zemczak (sil2100)]

Please ignore the SRU bug comment above - this SRU is handled via a single SRU tracking bug.

[Launchpad Janitor (janitor)]

This bug was fixed in the package python3.7 - 3.7.5-2~18.04

---------------
python3.7 (3.7.5-2~18.04) bionic-proposed; urgency=medium

  * SRU: LP: #1835738, backport 3.7.5 to 18.04.

python3.7 (3.7.5-2) unstable; urgency=medium

  * python3.7-dev: Depend on zlib1g-dev, needed to link as an
    embedded interpreter.

python3.7 (3.7.5-1) unstable; urgency=medium

  * Python 3.7.5 release.

python3.7 (3.7.5~rc1-2) unstable; urgency=medium

  * Apply proposed patch for issue 38368. LP: #1847036. Closes: #941650.

python3.7 (3.7.5~rc1-1) unstable; urgency=medium

  * Python 3.7.5 release candidate 1.
  * Bump standards version.

python3.7 (3.7.4-4) unstable; urgency=medium

  * Update to 20190904 from the 3.7 branch.

python3.7 (3.7.4-3) unstable; urgency=medium

  * Enable pgo/lto builds on arm64. Closes: #934812.
  * Don't propagate lto flags to the _sysconfigdata module. Closes: #934771.
  * d/patches/issue35998.diff: Disable TLS1.3 in the client on all platforms
    rather than just reducing the payload size (Michael Hudson-Doyle).
  * Annote build dependencies used for tests. Closes: #928513.

python3.7 (3.7.4-2) unstable; urgency=medium

  * Bump the platform name for KFreeBSD.

python3.7 (3.7.4-1) unstable; urgency=medium

  * Python 3.7.4 release.

python3.7 (3.7.4~rc2-2) unstable; urgency=medium

  * Bump standards version.

python3.7 (3.7.4~rc2-1) experimental; urgency=medium

  * Python 3.7.4 release candidate 2.

python3.7 (3.7.4~rc1-1) experimental; urgency=medium

  * Python 3.7.4 release candidate 1.

 -- Matthias Klose <email address hidden> Thu, 07 Nov 2019 11:50:52 +0100