Hello errors.ubuntu.com, or anyone else affected,

Accepted packagekit into bionic-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/packagekit/1.1.9-1ubuntu2.18.04.3
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Tags removed: verification-done verification-done-bionic
** Tags added: verification-needed verification-needed-bionic

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to packagekit in Ubuntu.
https://bugs.launchpad.net/bugs/1790671

Title:
  
/usr/lib/packagekit/packagekitd:11:std::__cxx11::basic_string:AptIntf::providesCodec:backend_what_provides_thread:pk_backend_job_thread_setup:g_thread_proxy

Status in packagekit package in Ubuntu:
  Fix Released
Status in packagekit source package in Bionic:
  Fix Committed

Bug description:
  [Impact]
  pkcon what-provides and other tools querying codecs do not work, they crash 
(unless you happen to be lucky with your apt cache). Also, cancalled 
transactions crash as well, even if you're lucky with your apt cache, as the 
"matcher" object is deleted twice.

  There are two reasons: A duplicate delete statement in providesCodec
  entered when cancelling the lookup, and a invalid pointer dereference
  in there.

  [Test case]
  The daemon should not crash as below, but should print a useful message.

  $ lxc launch -e ubuntu:bionic bbb
  $ lxc exec bbb apt update
  $ lxc exec bbb -- apt  -y  install packagekit
  $ lxc exec bbb pkcon what-provides  "gstreamer1.0(decoder-audio/ac3)"
  [...] The daemon crashed mid-transaction!

  (empty lxd container seems to be able to reproduce easily)

  This only tests the pointer dereference, I don't have a test for the
  duplicate. But the code is obviously correct:

   for ... [
     if (m_cancel) {
       // here used to be "delete matcher" - that's deleted
       break;
     }
   }
   delete matcher;

  That is, matcher is always deleted once now, and was always deleted
  twice when cancelling before.

  [Regression potential]
  I don't think it's possible to have a regression here, given the nature of 
the fix, but if there were one, we'd see different behavior in codec lookup.

  For the duplicate delete on cancelled transactions, you'd be looking
  at memory leaks if there were a regression.

  [Other info]
  The Ubuntu Error Tracker has been receiving reports about a problem regarding 
packagekit.  This problem was most recently seen with package version 
1.1.10-1ubuntu2, the problem page at 
https://errors.ubuntu.com/problem/46649a8a55e07e74b9d522c9bc9d71a74905ccc2 
contains more details, including versions of packages affected, stacktrace or 
traceback, and individual crash reports.
  If you do not have access to the Ubuntu Error Tracker and are a software 
developer, you can request it at http://forms.canonical.com/reports/.

To manage notifications about this bug go to:
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