Public bug reported:
This bug occurred while upgrading Oneiric to Precise.
The 'Z : start a shell to examine the situation' prompt does not
handle SIGINT. This is a severe bug, which just risked hosing my box.
do-release-upgrade said:
Configuration file `/etc/mysql/my.cnf'
==> Modified (by you or by a script) since installation.
==> Package distributor has shipped an updated version.
What would you like to do about it ? Your options are:
Y or I : install the package maintainer's version
N or O : keep your currently-installed version
D : show the differences between the versions
Z : start a shell to examine the situation
The default action is to keep your current version.
*** my.cnf (Y/I/N/O/D/Z) [default=N] ? z
Type `exit' when you're done.
root@code:/#
I typed a few characters, realized I typed the wrong thing, and hit
Ctrl-C. I got:
A fatal error occurred
Please report this as a
bug and include the files
/var/log/dist-upgrade/main.log and
/var/log/dist-upgrade/apt.log in
your report. The upgrade has aborted.
Your original sources.list
was saved in
/etc/apt/sources.list.distUpgrade.
Traceback (most recent call
last):
File "/tmp/update-manager-9cwRNH/precise", line 7, in <module>
sys.exit(main())
File "/tmp/update-manager-9cwRNH/DistUpgradeMain.py", line 226, in
main
if
app.run():
File "/tmp/update-manager-9cwRNH/DistUpgradeController.py", line
1721, in
run
return self.fullUpgrade()
File
"/tmp/update-manager-9cwRNH/DistUpgradeController.py", line
1690, in fullUpgrade
if not self.doDistUpgrade():
File
"/tmp/update-manager-9cwRNH/DistUpgradeController.py", line
1065, in doDistUpgrade
res =
self.cache.commit(fprogress,iprogress)
File
"/tmp/update-manager-9cwRNH/DistUpgradeCache.py", line 256, in
commit
apt.Cache.commit(self, fprogress, iprogress)
File "/usr/lib/python2.7/dist-packages/apt/deprecation.py", line 98,
in
deprecated_function
return func(*args, **kwds)
File
"/usr/lib/python2.7/dist-packages/apt/cache.py", line 473, in
commit
res = self.install_archives(pm, install_progress)
File "/usr/lib/python2.7/dist-packages/apt/deprecation.py", line 98,
in
deprecated_function
return func(*args, **kwds)
File
"/usr/lib/python2.7/dist-packages/apt/cache.py", line 436, in
install_archives
res = install_progress.run(pm)
File
"/tmp/update-manager-9cwRNH/DistUpgradeView.py", line 211, in
run
res =
os.WEXITSTATUS(self.wait_child())
File "/tmp/update-manager-9cwRNH/DistUpgradeView.py",
line 174, in
wait_child
select.select([self.statusfd], [], [],
self.select_timeout)
KeyboardInterrupt
=== Command terminated with exit status 1 (Mon Sep 24 14:19:12 2012) ===
And there went my upgrade. (The decorative spacing comes from do-
release-upgrade. That's a separate bug, presumably.) The system is
still sitting there, with dpkg in some mysterious state, stuck, because
the 'precise' process is waiting for I/O that's never going to happen.
If you're going to spawn a shell, *give it proper control of the tty so
it handles signals*.
** Affects: update-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: dist-upgrade
** Tags added: dist-upgrade
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1055811
Title:
do-release-upgrade configuration prompts fail to handle SIGINT
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