Public bug reported:
[ Impact ]
* This was reported in several places [0] [1] and fixed upstream. It's
not obvious that appstream is the culprit, but a deeper investigation
revealed that it was. TLDR, appstream hangs because its stderr output
gets filled with timestamp warning on devices that have a corrupted
clock.
* This patch redirect to a file or memfd and read the tail of the received
data for error messages, which will cause tar to continue.
* Since it impacted resolute in particular, I'm submitting a SRU for
Resolute. I don't think it's required for any older version, since it
was never reported for them and some users are working around the issue
by installing noble.
[ Test Plan ]
* A reproducer of the issue was provided [2].
* A 26.04 daily should be built with this patched version and some
verifications should also be made:
* it must not hang during boot with a corrupted clock. For that, one can
pass `-rtc base=2020-01-01T00:00:00,clock=vm` to qemu. The daily must have
Universe enabled, to be sure that a lot of icons are downloaded by appstream.
* the installed apps must have their icons in GNOME's launcher.
`/var/lib/swcatalog/icons` should contain all of them. With Universe enabled:
```
$ tree /var/lib/swcatalog/icons | wc -l
4127
```
[ Where problems could occur ]
* Appstream is responsible for retrieving the icons of the apps hence the icon
test.
* AppStream refresh is invoked by an APT post-update hook. If it hangs, it
will cause apt updates to hang and prevent live system boot.
[0]
https://askubuntu.com/questions/1567178/ubuntu-26-04-installer-freezes-at-get5-cdrom-resolute-main-amd64-packages-on-o
[1]
https://community.frame.work/t/ubuntu-26-04-install-hangs-logo-freeze-then-stuck-at-get-5-file-cdrom/83392
[2] https://github.com/ximion/appstream/issues/797#issuecomment-6341298207
** Affects: appstream (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2172814
Title:
Appstream hangs and make the live image unable to boot
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/appstream/+bug/2172814/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
