Bug 255103 – REGRESSION (iOS 16.4): WASM Out Of Memory with shared=true

• Status: NEW
• Component: WebAssembly

[Alex Bor]

We update iPhone from iOS 16.2 to 16.4 and get "Out Of Memory" in the console from code that was working before. We have localized the problem.

Try to put this part of code in safari iOS 16.4 console to reproduce:


      wasmMemory = new WebAssembly.Memory({
                          "initial": 205520896 / 65536,
                          "maximum": 2147483648 / 65536,
                          "shared": true
                      });

You will get "Out Of memory".

Now to set  "shared": false and WebAssembly object will be created.

[Alexey Proskuryakov]

Thank you for the report! Which iPhone and/or iPad models is this reproducing with?

[Radar WebKit Bug Importer]

<rdar://problem/107723604>

[Alex Bor]

(In reply to Alexey Proskuryakov from comment #1)
> Thank you for the report! Which iPhone and/or iPad models is this
> reproducing with?

14 pro max

[Jake Archibald]

Possibly https://bugs.webkit.org/show_bug.cgi?id=250569

[RalphSchoonover]

Not sure if https://tunnelrush3.com can help or not. I will try and report the results later.