[Webkit-unassigned] [Bug 253085] New: REGRESSION(260881 at main): [GStreamer] DMABuf sink caused several unexpected crashes on the WPE Release bot

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=253085

            Bug ID: 253085
           Summary: REGRESSION(260881 at main): [GStreamer] DMABuf sink
                    caused several unexpected crashes on the WPE Release
                    bot
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WPE WebKit
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: clopez at igalia.com
                CC: bugs-noreply at webkitgtk.org, philn at igalia.com,
                    zdobersek at igalia.com

The WPE Release bot has started to exit early due to more than 50 crashes since 260881 at main

This issue is not reproducible on the other WPE test bots that we have because the post-commit release bot has a different configuration

* All WPE test bots run without a GPU configured (no /dev/dri)

But

* The WPE Release post-commit bot runs inside a weston session and has a real GPU (Intel i7-3770) that is accesible at /dev/dri

You can check the crashes and the backtraces here:  https://build.webkit.org/#/builders/40/builds/9223

I have checked that the crash don't happen if I set WEBKIT_GST_DMABUF_SINK_DISABLED=1 on the environment

This is the relevant info about the environment

bb-wpe-release-test-64 ~ # lscpu | grep ^"Model name"
Model name:                      Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz

bb-wpe-release-test-64 ~ # lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09)

bb-wpe-release-test-64 ~ # ls  /dev/dri/
by-path  card0  renderD128

bb-wpe-release-test-64 ~ # XDG_RUNTIME_DIR=/run/user/1000 WAYLAND_DISPLAY=wayland-0 /home/buildbot/waylandes2info | curl -F 'sprunge=<-' http://sprunge.us
http://sprunge.us/RgCE9p

bb-wpe-release-test-64 ~ # modetest | curl -F 'sprunge=<-' http://sprunge.us
http://sprunge.us/gIsNu0

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