[webkit-changes] [WebKit/WebKit] 577579: jsc_fuz/wktr: null ptr deref in WebCore::ShareData...

[lericaa]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 577579c2ca9159d22ec96469cd168b843222b8fb
      https://github.com/WebKit/WebKit/commit/577579c2ca9159d22ec96469cd168b843222b8fb
  Author: Erica Li <lerica at apple.com>
  Date:   2023-10-28 (Sat, 28 Oct 2023)

  Changed paths:
    M LayoutTests/TestExpectations
    A LayoutTests/http/tests/webshare/navigator-share-files-fail-access-control-checks-crash-expected.txt
    A LayoutTests/http/tests/webshare/navigator-share-files-fail-access-control-checks-crash.html
    M Source/WebCore/page/ShareDataReader.cpp

  Log Message:
  -----------
  jsc_fuz/wktr: null ptr deref in WebCore::ShareDataReader::start(WebCore::Document*, WebCore::ShareDataWithParsedURL&&) + 240 (ShareDataReader.cpp:53)
https://bugs.webkit.org/show_bug.cgi\?id\=263643
rdar://115059534

Reviewed by Chris Dumez.

Adding empty check for m_pendingFileLoads in case reader has canceled during loop due to error and accessing null ptr.

* LayoutTests/TestExpectations: Exclude console message as this test logging blob url which contains unique UUID generated from each run.
* LayoutTests/http/tests/webshare/navigator-share-files-fail-access-control-checks-crash-expected.txt: Added.
* LayoutTests/http/tests/webshare/navigator-share-files-fail-access-control-checks-crash.html: Added.
* Source/WebCore/page/ShareDataReader.cpp:
(WebCore::ShareDataReader::start):

Canonical link: https://commits.webkit.org/269885@main