[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

This is confusing. errors.ubuntu.com reports the crash still occurring in 42.5-0ubuntu1 but it means gnome-shell 42.5-0ubuntu1, not mutter 42.5-0ubuntu1. And none at all recently enough to make the incident list. -- You received this bug notification because you are a member of Ubuntu Desktop

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Confirmed. This fixed the issue. Thanks! -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Changed in: oem-priority Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Can confirm that libmutter-10-0/42.5-0ubuntu1 fixed my issue. Thanks for all your hard work on this! -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

This bug was fixed in the package mutter - 42.5-0ubuntu1 --- mutter (42.5-0ubuntu1) jammy; urgency=medium [ Marco Trevisan (Treviño) ] * New upstream release (LP: #1985856) * debian/patches: Refresh * debian/libmutter-10-0.symbols: Sync with new and removed internal symbols

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Brad, I am unable to confirm if that's the same crash but the package you need to get the fix is 'libmutter-10-0' https://launchpad.net/ubuntu/jammy/amd64/libmutter-10-0/42.5-0ubuntu1 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Changed in: mutter Status: Unknown => Fix Released -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

I pulled gnome-shell, gnome-shell-common, mutter, and mutter-common 42.5-0ubuntu1 on 22.04.1 LTS, rebooted, and was able to immediately reproduce the issue by locking my screen and attempting to unlock it. OOPS ID: fb8c6096-5550-11ed-b3c8-fa163ef35206 -- You received this bug notification

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Tags removed: verification-needed-jammy ** Tags added: verification-done-jammy -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Just in time before updating to 22.10 :) I tested with mutter 42.5-0ubuntu1 and for me the problem seems to be fixed, i can finally work with multiple monitors again :) Thanks a lot! -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Hello errors.ubuntu.com, or anyone else affected, Accepted mutter into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/mutter/42.5-0ubuntu1 in a few hours, and then in the -proposed repository. Please help us by testing this new package. See

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Changed in: oem-priority Status: Confirmed => Fix Committed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

It's in the upload queue for jammy updates: https://launchpadlibrarian.net/629164794/mutter_42.5-0ubuntu1_source.changes ** Changed in: mutter (Ubuntu Jammy) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Hi Daniel, In order to meet customer's TTM expectation, would you please upload the solution to Jammy -proposed no later than Oct. 29, 2022? Thanks for your great support. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Tags added: originate-from-1989842 sutton -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

This bug was fixed in the package mutter - 43~rc-2ubuntu2 --- mutter (43~rc-2ubuntu2) kinetic; urgency=medium * Ignore build test failures on s390x -- Jeremy Bicha Tue, 13 Sep 2022 11:43:54 -0400 ** Changed in: mutter (Ubuntu Kinetic) Status: Fix Committed => Fix

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Updating jammy here: https://salsa.debian.org/gnome-team/mutter/-/merge_requests/82 ** Description changed: + [ Impact ] + + On dual-GPU systems, gnome-shell may crash in + gbm_surface_release_buffer() during display config changes, like when + rearranging monitor positions. + + [ Test Plan ]

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Also affects: mutter (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: mutter (Ubuntu Kinetic) Importance: High Assignee: Daniel van Vugt (vanvugt) Status: Fix Committed ** Changed in: mutter (Ubuntu Jammy) Assignee: (unassigned) => Daniel van

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Fixed upstream in: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_1548259 and in the patch for mutter 42: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2487.patch ** Changed in: mutter (Ubuntu) Status: In Progress => Fix Committed ** Tags added: fixed-upstream

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

I can finally reproduce this using a dual GPU dual monitor setup (Intel + AMD). -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Changed in: mutter (Ubuntu) Status: Confirmed => In Progress -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Hello @vanvugt, I tried with gnome-42.4 with steps below and gnome-shell works fine [Device] Laptop with iGPU (intel) and dGPU (amd) [steps] 1. Plug a monitor on iGPU (intel internal graphic) and plug the other monitor on dGPU (amd gpu) 2. Boot into system 3. Open gnome-settings-daemon and

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

See also: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1968#note_1275389 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Another duplicate (bug 1987174) shows the crash happening on a hybrid system with i915+nouveau. So it doesn't sound as related to AMDGPU as to hybrid systems in general (open source drivers). -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Changed in: oem-priority Importance: High => Critical -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Tags added: oem-priority originate-from-1981416 somerville ** Changed in: oem-priority Status: New => Confirmed ** Changed in: oem-priority Assignee: (unassigned) => Andy Chi (andch) ** Changed in: oem-priority Importance: Undecided => High -- You received this bug

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Tags added: dt-458 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Changed in: mutter (Ubuntu) Assignee: (unassigned) => Daniel van Vugt (vanvugt) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: mutter (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu.

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

I ran it, but didn't get any output after executing it and submitting the report. Let me know if there's anything else I can do to help -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu.

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Yes crashes in libgbm.so.1.0.0 are likely to be this bug. But we should create new bugs for each crash to confirm what they really are. Please run: ubuntu-bug /var/crash/_usr_bin_gnome-shell.1000.crash or if that doesn't work then try: apport-cli /var/crash/_usr_bin_gnome-shell.1000.crash

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

I came here from 1969351. On a rig with two identical AMD GPUs (First driving one monitor, second driving three), I'll sometimes have the one monitor disconnect, but it won't detect the failure or cause the other three screens to rearrange until I try to apply a change in Display Settings, after

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #2296 https://gitlab.gnome.org/GNOME/mutter/-/issues/2296 ** Also affects: mutter via https://gitlab.gnome.org/GNOME/mutter/-/issues/2296 Importance: Unknown Status: Unknown -- You received this bug notification because

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

>It looks like it may only happen at logout or during monitor config >rearrangement. and suspend and switching TTY's -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title:

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Sounds like I will need to try an Intel+AMDGPU hybrid combo. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

It doesn't freeze. The primary monitor is connected to the RX 580, and 2nd monitor is connected to the motherboard. If I unplug the 2nd monitor thats using i915 there is no crash. Suspend and switching to TTY's work if I unplug the 2nd monitor. -- You received this bug notification because you

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Interesting your system appears to use 'amdgpu' (from bug 1969351). I wonder if bug 1970043 is the same crash. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title:

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Thanks. It looks like a problem with errors.ubuntu.com itself, which is not uncommon. The crash report exists but it failed to get a stack trace and so errors.ubuntu.com can't categorise/group the crash reports. This bug is still open at least, but it does mean we don't get a feel for how common

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

I found this in my syslog for the crash this morning Apr 26 10:52:21 desktop whoopsie[]: [10:52:21] Parsing /var/crash/_usr_bin_gnome-shell.1000.crash. Apr 26 10:52:21 desktop whoopsie[]: [10:52:21] Uploading /var/crash/_usr_bin_gnome-shell.1000.crash. Apr 26 10:52:22 desktop

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Thread 1 "gnome-shell" received signal SIGSEGV, Segmentation fault. 0x7f50612a82e7 in gbm_surface_release_buffer () from /lib/x86_64-linux-gnu/libgbm.so.1 (gdb) bt full #0 0x7f50612a82e7 in gbm_surface_release_buffer () at /lib/x86_64-linux-gnu/libgbm.so.1 #1 0x7f5063665dbf in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

You might be commenting on the wrong bug now. We're still getting zero crash reports in gbm_surface_release_buffer, at least none since gnome- shell version 42.0-1ubuntu1. Can you provide a stack trace of the most recent crash and confirm that it happened after the update to 42.0-2ubuntu1 ? --

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

gnome-shell/jammy,now 42.0-2ubuntu1 amd64 [installed] graphical shell for the GNOME desktop As sure as when I opened the original bug. Are you sure your receiving reports? Are you talking about that popup that that says Ubuntu has encountered and error and do you want to send an error report

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

https://errors.ubuntu.com/problem/4fa0be3b67c650c621a425137efd7376c32451b4 is still showing all crashes are in 42.0-1ubuntu1, and zero crashes from 42.0-2ubuntu1. Are you sure you have 42.0-2ubuntu1 ? If the bug is still present then it's at least not common enough to show up on errors.ubuntu.com

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

I still crash with this issue whenever I try to apply changes to any display settings (e.g. refresh rate, multi-monitor positioning, etc.) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu.

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

I'm still crashing with the exact same issue with 42.0-2ubuntu1. If i blacklist amdgpu at boot time and use the Intel monitor there is no crashing but obviously it isn't ideal. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Maybe it was a side effect of bug 1964037 / bug 1959888. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1969422 Title: gnome-shell crashed with SIGSEGV in

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

It appears the crash reports suddenly stopped happening around 14 April. Certainly the last affected version of gnome-shell is 42.0-1ubuntu1, but that was replaced by 42.0-2ubuntu1 around 13 April. So fixed already? ** Changed in: mutter (Ubuntu) Status: Confirmed => Incomplete **

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: mutter (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu.

[Bug 1969422] Re: gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref() from g_set_object()

** Summary changed: - /usr/bin/gnome-shell:11:gbm_surface_release_buffer:meta_drm_buffer_gbm_finalize:g_object_unref:g_object_unref:g_set_object + gnome-shell crashed with SIGSEGV in gbm_surface_release_buffer() from meta_drm_buffer_gbm_finalize() from g_object_unref() from g_object_unref()