[Webkit-unassigned] [Bug 272600] New: NotReadableError: The I/O read operation failed for large files of size 4G+

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=272600

            Bug ID: 272600
           Summary: NotReadableError: The I/O read operation failed for
                    large files of size 4G+
           Product: WebKit
           Version: Safari 17
          Hardware: Mac (Apple Silicon)
                OS: macOS 14
            Status: NEW
          Severity: Major
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: theazgra at gmail.com

Created attachment 470903

  --> https://bugs.webkit.org/attachment.cgi?id=470903&action=review

Small repro for bug.

Hello,

I have came accross bug regarding the ReadableStream::getReader() [https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream/getReader] method.

This method fails for large files, of size 4G+, with `NotReadableError: The I/O read operation failed`.

I have tested this with *real* files and also some generated ones. Generated like: `dd if=/dev/zero of=test.dat bs=1G count=3`

Files of sizes 1G, 2G, 3G were fine, but from 4G, the error would occur. This makes upload of such files, using this API not working.

Also we can note, that this is not problem with the file itself, because *workaround* using `slice`, eg. `await file.slice(0, 65_536).stream().getReader().read();` is able to read the first Chunk of the file.

Small repro is attached.

```
const fileStream = file.stream();
const fileStreamReader = fileStream.getReader(); <-- NotReadableError will occur here
const {done, value} = await fileStreamReader.read() <-- this won't work, stream is closed because of the NotReadableError

console.log(done);
console.log(value);
```

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