[eoan][regression] GNOME Shell hangs when closing a Java dialog; hung in (varying functions under) meta_stack_get_default_focus_window() from meta_window_x11_focus()

StacktraceTop:
 g_private_get (key=key@entry=0x7fc92a3df440 <private_thread_memory>) at ../../../glib/gthread-posix.c:1062
 thread_memory_from_self () at ../../../glib/gslice.c:1185
 g_slice_free_chain_with_offset (mem_size=24, mem_chain=0x0, next_offset=8) at ../../../glib/gslice.c:1185
 g_list_free (list=<optimized out>) at ../../../glib/glist.c:182
 stack_do_window_deletions (stack=stack@entry=0x55c3f44b73b0, stack=stack@entry=0x55c3f44b73b0) at ../src/core/stack.c:820

Looks maybe related to bug 1831578. I wonder if Marco put an early fix for that into the gnome-shell 3.32.2-2ubuntu1 update...

I've installed CLion from snap, but I can't reproduce this.

Any hint? What kind of dialog is affected?

Possibly related:

b'org.gnome.shell' b'enabled-extensions' b"['<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>']"

Chris, does your hung process also spin using lots of CPU?

If so then I am thinking bug 1835033 will turn out to be the same issue.

Oh! Trevhino said both that he could reproduce this *and* that he had a fix (although he didn't seem very happy with the fix).

FWIW, if this is the same as bug #1835033, I find it only hangs when you close a dialog of a dialog - closing a first-level dialog of the main program seems to be ok.

This might be the same: https://gitlab.gnome.org/GNOME/mutter/issues/661

Generalized to show the same infinite loop can occur with varying stack traces, depending on when you snapshot/coredump it. This is apparently a result of the new loop in:

https://gitlab.gnome.org/GNOME/mutter/commit/f71151a5dd990d935f3fbb39451f9b41f640b625

Hi, i have issue with 3.32.2+git20190626 and JetBrain's IDEs.

In my case after updating to the 3.32.2+git20190626 have system freezes after clicking on dialog button (dialog shoud be placed over another dialog).

I described it in JB tracker https://youtrack.jetbrains.com/issue/JBR-1642

Hi I can confirm this for Jetbrain's phpstorm and for jedit.
It is a major issue if these happen to be important tools in the office.

I was hitting this on disco-proposed. I found that it was resolved by setting an APT priority of -1 for disco-proposed and doing a dist-upgrade (i.e. downgrading all packages to disco-updates). I found that downgrading mutter and gnome-shell was insufficient (I guess there are lots of related libraries).

@fasaxc Thank you that is a handy workaround.

current workaround is to downgrade packages

gir1.2-mutter-4
libmutter-4-0-dbgsym
mutter

to version from disco-updates (easier to do it with aptitude)

don't forget to add disco-updates to sources.list (if u have eoan)
deb http://ru.archive.ubuntu.com/ubuntu/ disco-updates universe

On Ubuntu 19.04 run the following command to fix it (downgrading):

sudo apt install \
    gir1.2-mutter-4=3.32.0+git20190410-1ubuntu1 \
    libmutter-4-0=3.32.0+git20190410-1ubuntu1 \
    mutter=3.32.0+git20190410-1ubuntu1 \
    mutter-common=3.32.0+git20190410-1ubuntu1

Ilyas, this bug was never released into a stable release of Ubuntu, it was identified while the change was present only in the devel series and in disco-proposed. If you are unhappy dealing with bugs of this sort, I strongly recommend that you not opt in to the proposed pocket, which contains packages they have not yet completed QA and been released to all users for general consumption.

@vorlon, yes, you are right, already unchecked it. Did not know that I have checked proposed. It is my bad.

In any case,

When I close any dialog popup from java apps (Jdeveloper, NetBeans, SQLDeveloper) then I get gnome-shell running at 100% of processor and graphical interface hangs.

I've checked for my mutter installed version:

3.32.2+git20190626-1ubuntu1~19.04.1 (/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_disco-proposed_main_binary-amd64_Packages) (/var/lib/dpkg/status)

Downgrading mutter and libmutter as Iliyas indicated, I can avoid the problem.

Thanks to Ilyas and thanks to everyone.

This bug was fixed in the package mutter - 3.32.2+git20190711-2ubuntu1

---------------
mutter (3.32.2+git20190711-2ubuntu1) eoan; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.32.2+git20190711-2) experimental; urgency=medium

  * d/p/window-x11-Focus-a-window-in-the-active-workspace-as-take.patch:
    - Fix possible crash on closing Java dialogs (Related to LP: #1834583)
    d/p/metatest-Dispatch-the-destruction-instead-of-sleeping-aft.patch:
    - Tests: don't wait too much after window destruction, causing failures

 -- Iain Lane <email address hidden> Fri, 19 Jul 2019 16:59:08 +0100

Thanks, mutter 3.32.2+git20190711-2ubuntu1 fixes it for me in eoan.

Is it possible to backport the eoan fix to disco proposed repository?

Thank you.

Massimeddu: The fix is already in progress and waiting for the SRU team to ack the change before it can go to proposed repository

Hello Chris, or anyone else affected,

Accepted mutter into disco-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/mutter/3.32.2+git20190711-2ubuntu1~19.04.1 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-disco to verification-done-disco. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-disco. 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.

No hang anymore with ubuntu-proposed mutter

marco@ubuntu-vmware:~:✗ $ apt-cache policy mutter
mutter:
  Installed: 3.32.2+git20190711-2ubuntu1~19.04.1
  Candidate: 3.32.2+git20190711-2ubuntu1~19.04.1
  Version table:
 *** 3.32.2+git20190711-2ubuntu1~19.04.1 500
        500 http://archive.ubuntu.com/ubuntu disco-proposed/main amd64 Packages
        100 /var/lib/dpkg/status

The verification of the Stable Release Update for mutter has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package mutter - 3.32.2+git20190711-2ubuntu1~19.04.1

---------------
mutter (3.32.2+git20190711-2ubuntu1~19.04.1) disco; urgency=medium

  * No-change backport from disco to eoan.

mutter (3.32.2+git20190711-2ubuntu1) eoan; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.32.2+git20190711-2) experimental; urgency=medium

  * d/p/window-x11-Focus-a-window-in-the-active-workspace-as-take.patch:
    - Fix possible crash on closing Java dialogs (Related to LP: #1834583)
    d/p/metatest-Dispatch-the-destruction-instead-of-sleeping-aft.patch:
    - Tests: don't wait too much after window destruction, causing failures

mutter (3.32.2+git20190711-1ubuntu1) eoan; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.32.2+git20190711-1) experimental; urgency=medium

  * New upstream snapshot up to commit ccab0f470
    - Fix No-input WM_TAKE_FOCUS dialogs causing GNOME Shell to hang
      and ensure we always have a window focused if we have a valid
      focus canididate (LP: #1834583)
    - Don't crash on shell close / reload under X11 when releasing
      surface actor display resources (LP: #1826918)
  * d/p/debian/Revert-meson-Bump-meson-requirement-to-0.50.0.patch:
    - Revert dependency on meson 0.50.0

mutter (3.32.2+git20190626-1ubuntu1~19.04.1) disco; urgency=medium

  * No-change backport from eoan to disco for SRU.

mutter (3.32.2+git20190626-1ubuntu1) eoan; urgency=medium

  * Merge with debian (LP: #1834493). Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintainer to ubuntu
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr

mutter (3.32.2+git20190626-1) experimental; urgency=medium

  * New upstream snapshot release:
    - Don't crash when try to focus unfocusable windows (LP: #1791574)
    - Valgrind use-after-free warning fixes in the native backend
    - renderer/native: add missing eglTerminate in EGLDevice error path
    - Fix Alt+F2 -> restart to work again in X11
    - window: Emit an error and return when trying to activate an unmanaged
      (LP: #1827401)
    - Setting cursor to "none" doesn't hide it under Wayland
    - Fix broken selected text in entries
    - Tests memory fixes

mutter (3.32.2-1ubuntu1) eoan; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to launchpad
      - Update maintai...

Is this fixed in the current Ubuntu 19.10? I just installed Ubuntu 19.10 last week and I have encountered gnome freezing several times already. Not sure if it's the same issue as this one or should I file a new bug.

This specific issue has been fixed, in order to check what is yours you should help us to identify it by using gdb to connect to the process.

Can you provide us such feedback?