After r259830, the updateRendering tracepoint doesn't work as expected since we are calling the tracepoint reentrantly (the root page's Page::updateRendering calls the SVG page's Page::updateRendering). We should either exclude the SVG page from this tracepoint or change the tracepoint pass an extra arg to kdebug_trace that can be used to properly pair the beginning and end of the tracepoint.
*** Bug 214691 has been marked as a duplicate of this bug. ***
Created attachment 405055 [details] Patch
Comment on attachment 405055 [details] Patch r=me
Committed r264778: <https://trac.webkit.org/changeset/264778> All reviewed patches have been landed. Closing bug and clearing flags on attachment 405055 [details].
<rdar://problem/66002353>