Bug 261760 – Websites Crashing/Reloading in STP 178

• Component: New Bugs
• Status: RESOLVED DUPLICATE

[Jack Wellborn]

Created attachment 467761 [details]
Demonstration of Ars Technica Crashing/Reloading

Hello, 

Some of the sites I commonly frequent seem to crash in Safari Technology Preview 178, most notably https://arstechnica.com/. This occurs even in a Private Browsing window. 

Environment:
MacBook Pro with M1 Pro
macOS Sonoma 14.0 (23A339)
Safari Technology Preview 178

[Ahmad Saleem]

Can you attach 'Crash Logs' from Console.app?

I am unable to reproduce the bug on macOS Ventura with STP178 and it does not crash. I do have ad blocker and other extensions though.

[Jack Wellborn]

Weird. I also experienced the issue on https://www.washingtonpost.com earlier today, but I am not reproducing on either site now. My guess is some common bit of ad tech was causing the issue. I will close and reopen if it rears its ugly head again.

[Jack Wellborn]

Created attachment 467785 [details]
Webkit WebContent Crash Report

This is the request Crash Report.

[Jack Wellborn]

Issue started happening again on washingtonpost.com and I have attached the crash report.

[Sam Sneddon [:gsnedders]]

Crashing in WebCore::ShorthandSerializer::serializeGridTemplate, which Sammy recently touched in Bug 260494.

rdar://115783828

[Sammy Gill]

Thanks for the report! Given the crash signature, I think there is a decent chance that this is a dupe of https://bugs.webkit.org/show_bug.cgi?id=261421 and that patch may fix the issue. Is there a way to reproduce the issue reliably? That would help us determine if this truly is a dupe because I have not been able to reproduce it on either of the sites yet

[Jack Wellborn]

Unfortunately, I can't reproduce easily as I suspect the offending code is coming from some ad tech on sites. That said, I also strongly suspect it might be the same `element.TextContent = ""` behavior from the linked issue as that is exactly the kind of thing an ad related script might do. I am going to see if I can reproduce before updating to 179, then see if I can reproduce after.

[Sammy Gill]

If I'm reading the release notes correctly it seems like that the change might not have gotten picked up by STP yet :(

[Sammy Gill]

I am going to mark this as a duplicate since I think that the underlying cause of the bug is the same. Once the fix gets into STP please try it again and reopen the bugzilla if the issue still reproduces!

*** This bug has been marked as a duplicate of bug 261421 ***