Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 58e404642c059a7d0d6e055b620a8318a94457d7
https://github.com/WebKit/WebKit/commit/58e404642c059a7d0d6e055b620a8318a94457d7
Author: Jer Noble <[email protected]>
Date: 2026-02-23 (Mon, 23 Feb 2026)
Changed paths:
M Source/WebCore/Modules/streams/ReadableStreamDefaultReader.cpp
Log Message:
-----------
CRASH in WebCore::ReadableStream::state() const
rdar://170652029
https://bugs.webkit.org/show_bug.cgi?id=308309
Reviewed by Youenn Fablet.
The Streams specification states for the releaseLock() method
that the method should return early if `this.[[stream]]` is
undefined, but it was possible for releaseLock() to call
genericRelease() if m_stream was null, if m_internalDefaultReader
is also null.
Return early from releaseLock() if m_stream is null, and
due to the law of unintended consequences, also return early
from genericRelease() if m_stream is null, as well as from
genericCancel() and setup(), which have similar issues.
* Source/WebCore/Modules/streams/ReadableStreamDefaultReader.cpp:
(WebCore::ReadableStreamDefaultReader::releaseLock):
(WebCore::ReadableStreamDefaultReader::setup):
(WebCore::ReadableStreamDefaultReader::genericRelease):
Canonical link: https://commits.webkit.org/308072@main
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