Bug 200686

Summary:	REGRESSION (iPad OS 13 beta): Non-trivially sized wasm applications crash Safari
Product:	WebKit	Reporter:	Walter Stumpf <walter>
Component:	WebAssembly	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Blocker	CC:	evan.exe, fpizlo, keith_miller, mark.lam, m, saam, webkit-bug-importer, ysuzuki
Priority:	P2	Keywords:	InRadar
Version:	Other
Hardware:	iPhone / iPad
OS:	Other
See Also:	https://bugs.webkit.org/show_bug.cgi?id=200807

Description Walter Stumpf 2019-08-13 13:04:00 PDT

Essentially a regression on the partial fix for https://bugs.webkit.org/show_bug.cgi?id=181723 (Unhandled Promise Rejection: Error: Out of executable memory in function at index)

To reproduce with any beta of iPad OS 13:
1) Navigate with Safari to https://simulations.kognito.com/changetalk/dev
2) Notice the compiler crash immediately when attempting to load

For clarity, iOS 12.2, 12.3, 12.4 all function correctly.  Any version *before* 12.2 will result in the same error that currently happens in iPad OS 13.  Let me know if there's any other information or test case you need from me.

Comment 1 Radar WebKit Bug Importer 2019-08-13 14:55:15 PDT

<rdar://problem/54275409>

Comment 2 Walter Stumpf 2019-08-23 21:41:16 PDT

Hello,

Just wanted to add that I got around to installing iOS 13 beta (version 8) on my iPhone X and the regression exists there too.  I'm sure not too surprising, but just thought I'd share for clarity's sake.

Comment 3 Saam Barati 2019-08-27 08:25:31 PDT

Thanks for letting us know. We’re actively working on making JSC use less executable memory for Wasm in ToT WebKit.

Comment 4 Alexey Proskuryakov 2019-09-03 20:40:44 PDT

This issue should be fixed via bug 200807, sorry for the forward dupe.

*** This bug has been marked as a duplicate of bug 200807 ***