[Bug 1537310] Re: Canceling upload of problem information causes dialog to freeze

[Benjamin Drung]

When I prepared the SRU for Apport I only tested the build and
unit/integration autopkgtest, because my VMs needed for the system
autopkgtest were broken and I had poor Internet connection. So I did not
check the system autopkgtest and boom, they failed due to missing new
dependencies.

I uploaded 2.28.1-0ubuntu3.3 and verified it to work in a PPA.

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Title:
  Canceling upload of problem information causes dialog to freeze

Status in Apport:
  Fix Committed
Status in apport package in Ubuntu:
  Fix Released
Status in apport source package in Noble:
  Fix Committed

Bug description:
  [ Impact ]

  Canceling the upload of problem information after sending information
  acquired with `ubuntu-bug [package name]` causes the upload dialog to
  become unresponsive.

  Report 2: I ran `ubuntu-bug gnome-terminal`, but then realized a
  second or so later that's not what I had intended to do. I therefore
  clicked the Cancel button on the "Collecting problem information /
  Information is being collected that may help the developers fix the
  problem you report." dialog that had popped up. It hung, i.e., the
  back-and-forth progress bar in the dialog stopped moving, and nothing
  else happened, and it's still sitting several minutes later doing
  nothing.

  Report 3: I have recently noticed that when running Apport, if one
  presses the little "X" to close Apport during the time when it is
  collecting or sending the bug information, instead of it behaving as
  though you have pressed "Cancel" and closing, it becomes unresponsive
  and I am asked if I would prefer to "Wait" or "Force Quit" and I am
  forced to "Force Quit" because it is completely unresponsive, there's
  nothing else I can do.

  [ Test case ]

  1. Log-in to a KDE session
  2. type 'ubuntu-bug' in konsole
  3. click 'display (X.org)' related and then OK
  4. On the next page, don't click "OK", click "Cancel"

  The windows will hang on an affected Apport version (see bug #1998309)
  and should close on a fixed Apport version.

  [ Where problems could occur ]

  The change affects how Apport behaves when the main thread terminates.
  This could lead to aborting wanted background threads and thus
  preventing users from filing a bug.

  [ Original report data ]

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: apport-gtk 2.19.1-0ubuntu5
  Uname: Linux 4.3.3-040303-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportLog:

  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CrashReports:
   640:0:152:907688:2016-01-15 16:04:48.503047587 +0100:2016-01-15 16:04:46.731001423 +0100:/var/crash/_usr_sbin_winbindd.0.crash
   644:0:152:0:2016-01-15 16:04:48.503047587 +0100:2016-01-15 16:04:48.503047587 +0100:/var/crash/_usr_sbin_winbindd.0.upload
   640:163:152:42761293:2016-01-23 03:37:42.503584063 +0100:2016-01-23 03:37:14.182860515 +0100:/var/crash/_usr_bin_rtorrent.163.crash
   644:163:152:0:2016-01-23 03:37:18.986983255 +0100:2016-01-23 03:37:18.986983255 +0100:/var/crash/_usr_bin_rtorrent.163.upload
  Date: Sat Jan 23 04:45:02 2016
  InstallationDate: Installed on 2015-04-20 (277 days ago)
  InstallationMedia: Ubuntu-Server 14.10 "Utopic Unicorn" - Release amd64 (20141022.2)
  PackageArchitecture: all
  SourcePackage: apport
  UpgradeStatus: Upgraded to wily on 2015-10-26 (88 days ago)

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