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