This bug also affects us on Ubuntu 24.04.1 LTS. When I run unattended-upgrade in debug mode, this error message appears after the packages have been downloaded, after the message “dpkg is configured not to cause conffile prompts” before the program starts installing the updates.
Debian seems to be discussing the bug at this address: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1076097 ** Bug watch added: Debian Bug tracker #1076097 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1076097 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unattended-upgrades in Ubuntu. https://bugs.launchpad.net/bugs/2087935 Title: DeprecationWarning for multi-threaded fork() under Python 3.12 Status in unattended-upgrades package in Ubuntu: Confirmed Bug description: We run unattended-upgrades on a lot of servers, but on Ubuntu noble (Ubuntu 24.04.1 LTS) we're getting a lot of cron spam that doesn't appear elsewhere: > /usr/bin/unattended-upgrade:567: DeprecationWarning: This process (pid=475626) is multi-threaded, use of fork() may lead to deadlocks in the child. > pid = os.fork() The above message appears several times during an upgrade; the count is different each week, presumably relating to what operations are needed. lsb_release -rd: No LSB modules are available. Description: Ubuntu 24.04.1 LTS Release: 24.04 Relevant packages: unattended-upgrades 2.9.1+nmu4ubuntu1 python3.12 3.12.3-1ubuntu0.2 The warning appears to be introduced in Python 3.12 - https://docs.python.org/3/whatsnew/3.12.html > On POSIX platforms, os.fork() can now raise a DeprecationWarning when it can detect being called from a multithreaded process To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/2087935/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
