[webkit-changes] [WebKit/WebKit] 0806b9: Invalid IPC from RemoteScrollingCoordinator with e...

[Nikos Mouchtaris]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 0806b90dc5f60cda347cc0a1f190247be23f8d5a
      https://github.com/WebKit/WebKit/commit/0806b90dc5f60cda347cc0a1f190247be23f8d5a
  Author: Nikolaos Mouchtaris <nmouchtaris at apple.com>
  Date:   2024-06-18 (Tue, 18 Jun 2024)

  Changed paths:
    M Source/WebKit/UIProcess/RemoteLayerTree/RemoteScrollingCoordinatorProxy.cpp
    M Source/WebKit/UIProcess/RemoteLayerTree/RemoteScrollingCoordinatorProxy.h

  Log Message:
  -----------
  Invalid IPC from RemoteScrollingCoordinator with empty ScrollingNodeID
https://bugs.webkit.org/show_bug.cgi?id=275574
rdar://130011125

Reviewed by Charlie Wolfe.

When the root scrolling node is null we can ipc an empty scrolling node which
is invalid. Add a check before sending the ipc.

* Source/WebKit/UIProcess/RemoteLayerTree/RemoteScrollingCoordinatorProxy.cpp:
(WebKit::RemoteScrollingCoordinatorProxy::deferWheelEventTestCompletionForReason):
(WebKit::RemoteScrollingCoordinatorProxy::removeWheelEventTestCompletionDeferralForReason):

Canonical link: https://commits.webkit.org/280143@main



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