Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unattended-upgrades (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2029120
Title:
/usr/bin/unattended-upgrade leaking and saturating RAM in 30 seconds
Status in unattended-upgrades package in Ubuntu:
Confirmed
Bug description:
Hello,
We are facing a huge memory leak with unattended-upgrade binary. It appears
that in around 20s, 2.9Go (80%) of RAM is consumed by the process making the
system unresponsive (even a basic 'ps' command remains stuck).
The swap was voluntarily disabled, but anyway I do not expect such a process
to consume up to 3Go of RAM in nominal operation.
Note: the logs were captured on a system configured in French. I
manually translated some words below, which could explain it is not
exactly what you would have on an english based system.
Ubuntu release:
Description: Ubuntu 22.04 LTS
Release: 22.04
Package version:
unattended-upgrades:
Installed : 2.8ubuntu1
Candidate : 2.8ubuntu1
Version table :
*** 2.8ubuntu1 500
500 http://fr.archive.ubuntu.com/ubuntu jammy/main amd64 Packages
500 http://fr.archive.ubuntu.com/ubuntu jammy/main i386 Packages
100 /var/lib/dpkg/status
In attachment you will find 2 files:
- periodic monitoring of available memory (with free -m)
- periodic monitoring of highest memory consumer processes (with ps + sort on
memory column)
- screenshot of syslog (from a distinct run) showing that unattended-upgr
went out of memory and was killed by OOM. You can also see that the run occured
as part of the apt-daily service.
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