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  1. Qt
  2. QTBUG-105703

QWaylandWindow::createDecoration() is called from multiple threads

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    Description

      QWaylandGLContext::makeCurrent() calls QWaylandWindow::createDecoration() but the function itself is not written to be thread safe. It has been that way since at least before 2014 (https://codereview.qt-project.org/c/qt/qtwayland/+/95947) and we haven't seen any issues with it, probably because createDecoration() is called seldomly.

      However, there is the possibility that something might fail there.

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          Bug - A problem which impairs or prevents the functions of the product. QTBUG-105308 ASSERT failure in QWindow: "Updates can only be scheduled from the GUI (main) thread"

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
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              davidedmundson David Edmundson
              esabraha Eskil Abrahamsen Blomfeldt
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