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  1. Qt
  2. QTBUG-102599

Slow painting of svg file

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Details

    • 8f5075067 (dev)

    Description

      1. Build the attached project.
        Normal release build, no sanitizers needed.
      2. Run the resulting binary, passing in the attached input file: 
        ./report 46709.svg

        The process will run for a notably long time. Here it occupies a CPU core entirely for like 30 to 50 seconds.

      Google's oss-fuzz found this as issue 46709. They will publish the details 90 days from now, the latest.

      Attachments

        1. 46709.svg
          3 kB
        2. main.cpp
          0.4 kB
        3. report.html
          1.80 MB
        4. report.pro
          0.0 kB

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-110595 [REG 5.15 -> 6.x] QSvgRenderer::render(QPainter*) is now ~100x slower

          • 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.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-101281 Loading particular svg file takes far too long

          • 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.
          • Closed
          For Gerrit Dashboard: QTBUG-102599
          # Subject Branch Project Status CR V
          465010,2 fuzzing: Add svg file which revealed performance regression dev qt/qtqa Status: MERGED +2 0

          Activity

            People

              qt.team.graphics.and.multimedia Qt Graphics Team
              rlohning Robert Löhning
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              Dates

                Created:
                Updated:
                Resolved:

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