Closed Bug 1645678 Opened 9 months ago Closed 7 months ago

[Wayland] dmabuf-video-textures: Crash in [@ mozilla::widget::WaylandDisplayGet] MOZ_CRASH(There's too many wayland display conections!)


(Core :: Widget: Gtk, defect, P3)




81 Branch
Tracking Status
firefox-esr68 --- unaffected
firefox-esr78 --- unaffected
firefox77 --- unaffected
firefox78 --- unaffected
firefox79 --- disabled
firefox80 --- disabled
firefox81 --- fixed


(Reporter: jan, Assigned: stransky)


(Blocks 2 open bugs, Regression)


(Keywords: crash, nightly-community)

Crash Data


(1 file)

Gnome Wayland, Debian Testing
Tab crash. I clicked to play the "Ryan Levick - Rust at Microsoft" YouTube video on

This is my main profile: VAAPI pref is disabled for testing. AV1 is disabled to use VP9 with media.ffvpx.enabled;false.

This bug is for crash report bp-4e653779-e439-4b69-84b7-2fb540200614.

MOZ_CRASH(There's too many wayland display conections!)

Top 10 frames of crashing thread:

0 mozilla::widget::WaylandDisplayGet widget/gtk/nsWaylandDisplay.cpp:132
1 WaylandDMABufSurfaceNV12::Create widget/gtk/WaylandDMABufSurface.cpp:843
2 WaylandDMABufSurfaceNV12::CreateNV12Surface widget/gtk/WaylandDMABufSurface.cpp:726
3 mozilla::FFmpegVideoDecoder<58>::CreateImageDMABuf dom/media/platforms/ffmpeg/FFmpegVideoDecoder.cpp:750
4 mozilla::FFmpegVideoDecoder<58>::DoDecode dom/media/platforms/ffmpeg/FFmpegVideoDecoder.cpp:479
5 mozilla::FFmpegDataDecoder<58>::DoDecode dom/media/platforms/ffmpeg/FFmpegDataDecoder.cpp:184
6 mozilla::FFmpegDataDecoder<58>::ProcessDecode dom/media/platforms/ffmpeg/FFmpegDataDecoder.cpp:140
7 mozilla::detail::ProxyRunnable<mozilla::MozPromise<nsTArray<RefPtr<mozilla::MediaData> >, mozilla::MediaResult, true>, RefPtr<mozilla::MozPromise<nsTArray<RefPtr<mozilla::MediaData> >, mozilla::MediaResult, true> >  xpcom/threads/MozPromise.h:1457
8 mozilla::TaskQueue::Runner::Run xpcom/threads/TaskQueue.cpp:214
9 nsThreadPool::Run xpcom/threads/nsThreadPool.cpp:299

(I just assume that this came with bug 1629788. It doesn't seem to be reproducible.)

bp-8442fcf8-3e3c-4921-bb69-2ca730200614 It happened when trying to play a video on Twitter. So it's rarely reproducible.

15 of current 33 crashes are from me, mostly trying to play a video on Twitter. It's not that rare. Now I just open tweets with videos in a new tab and let them crash if they want to. After some hours I enabled Fission, but it didn't seem to be much different.

Priority: -- → P3
Depends on: 1645706

Let's disable dmabuf video textures for now - Bug 1645706.

a decent chunk of the crashes should be me.

Yeah I also see this very very often on a lot of video-heavy twitter pages and such.

Not sure if it assists, but I am seeing this error extremely frequently when viewing videos on youtube and reddit. With many crash ids including: 0a99c204-8817-4297-b8de-7b3d80200722.

See Also: → 1655090

This should be fixed now by Bug 1655026 - we don't use Wayland display to create the surfaces any more.

Closed: 7 months ago
Resolution: --- → FIXED

I think we also should use DRM display on Wayland by default.

Resolution: FIXED → ---
Assignee: nobody → stransky
Pushed by
[Wayland] Use DRM display for VA-API decoding by default, r=jhorak
Closed: 7 months ago7 months ago
Resolution: --- → FIXED
Target Milestone: --- → 81 Branch

The patch landed in nightly and beta is affected.
:stransky, is this bug important enough to require an uplift?
If not please set status_beta to wontfix.

For more information, please visit auto_nag documentation.

Flags: needinfo?(stransky)

We don't need that in beta, Thanks.

Flags: needinfo?(stransky)
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