Memory leak in test svg-in-object-auto.html

[InvalidUsernameException]

Summary

Executing the test under Tests/LibWeb/Text/input/wpt-import/html/rendering/replaced-elements/svg-embedded-sizing/svg-in-object-auto.html repeatedly in the same tab causes memory usage of the content process to grow. Invoking garbage collection manually has no or very little effect on memory usage.

I cannot reproduce the memory increase in other browsers. So it seems unlikely that this is a bug in the test itself.

Worth noting: Some of the tests in the same folder exhibit similar behavior, but the memory usage for them seems to stabilize after several tests executions.

Operating system

Linux

Steps to reproduce

Run ./Meta/ladybird.sh run ladybird Tests/LibWeb/Text/input/wpt-import/html/rendering/replaced-elements/svg-embedded-sizing/svg-in-object-auto.html and refresh the page several times

Expected behavior

Memory usage stays constant after explicitly invoking garbage collection.

Actual behavior

• Memory usage increases with every page reload and does not decrease by running garbage collection.
• Also after the test has been re-executed several times in the same tab, test execution becomes noticeably slower and idle CPU usage higher as well.

URL for a reduced test case

Tests/LibWeb/Text/input/wpt-import/html/rendering/replaced-elements/svg-embedded-sizing/svg-in-object-auto.html

HTML/SVG/etc. source for a reduced test case

N/A

Log output and (if possible) backtrace

N/A

Screenshots or screen recordings

No response

Build flags or config settings

No response

Contribute a patch?

• I’ll contribute a patch for this myself.