Crash of python3.7 with virt-manager

[mother-earth40]

BPO	37720
Nosy	@vstinner
Files	crash_and_packages.log: Crash.log and installed packages-list

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2019-07-30.11:10:22.304>
created_at = <Date 2019-07-30.10:14:00.713>
labels = ['3.7', 'expert-installation', 'type-crash']
title = 'Crash of python3.7 with virt-manager'
updated_at = <Date 2019-07-30.11:10:22.303>
user = 'https://bugs.python.org/mother-earth40'

bugs.python.org fields:

activity = <Date 2019-07-30.11:10:22.303>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2019-07-30.11:10:22.304>
closer = 'vstinner'
components = ['Installation']
creation = <Date 2019-07-30.10:14:00.713>
creator = 'mother-earth40'
dependencies = []
files = ['48517']
hgrepos = []
issue_num = 37720
keywords = []
message_count = 5.0
messages = ['348730', '348731', '348732', '348733', '348736']
nosy_count = 2.0
nosy_names = ['vstinner', 'mother-earth40']
pr_nums = []
priority = 'normal'
resolution = 'third party'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue37720'
versions = ['Python 3.7']

[mother-earth40]

Hi!

A few days ago, I upgraded to UbuntuMate 19.04.

I can't run 'virt-manager' because of this:

# virt-manager
Output: Segmentation fault

kernel: [ 2003.888116] virt-manager[16014]: segfault at 32d0 ip 00000000000032d0 sp 00007ffeb09ac658 error 14 in python3.7[400000+21000]

kernel: [ 2003.888124] Code: Bad RIP value.

Look at "crash_and_packages.log" I added to attachment.

Please help, to fix that. Thanks!

[vstinner]

Try to run virt-manager with faulthandler enabled to get the Python traceback where the bug occurs:

PYTHONDEVMODE=1 virt-manager --no-fork

I expect that the bug comes from a third-party C extension (no part of Python standard library). My notes to debug a Python crash:
https://pythondev.readthedocs.io/debug_tools.html

[mother-earth40]

PYTHONDEVMODE=1 virt-manager --no-fork
Fatal Python error: Segmentation fault

Current thread 0x00007f835bafd740 (most recent call first):
File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
File "<frozen importlib._bootstrap_external>", line 1043 in create_module
File "<frozen importlib._bootstrap>", line 583 in module_from_spec
File "<frozen importlib._bootstrap>", line 670 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/python3.7/lzma.py", line 27 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/python3.7/shutil.py", line 29 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/python3.7/tempfile.py", line 44 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/apport/report.py", line 12 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/apport/init.py", line 5 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 953 in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 983 in _find_and_load
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63 in apport_excepthook
Segmentation fault

[mother-earth40]

How to fix that? See above post.

[vstinner]

That's a crash in the apport project itself which is specific to Ubuntu, and unrelated to Python standard library. I close this issue.

Please report issues specific to Ubuntu to the Ubuntu bug tracker.