Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: bd4ce6001e93131ec13bdeb5434ae4deab2c2718
      
https://github.com/WebKit/WebKit/commit/bd4ce6001e93131ec13bdeb5434ae4deab2c2718
  Author: Ben Nham <[email protected]>
  Date:   2026-09-01 (Tue, 01 Sep 2026)

  Changed paths:
    M Source/WebKit/UIProcess/BrowsingContextGroup.cpp
    M Source/WebKit/UIProcess/BrowsingContextGroup.h
    M Source/WebKit/UIProcess/WebPageProxy.cpp
    M Tools/TestWebKitAPI/Tests/WebKit/WKWebView/SiteIsolation.mm

  Log Message:
  -----------
  [Site Isolation] Don't use crashed processes in BrowsingContextGroup
https://bugs.webkit.org/show_bug.cgi?id=322868
rdar://186115818

Reviewed by Sihui Liu and Per Arne Vollan.

BrowsingContextGroup returns potentially terminated processes in both 
sharedProcessForSite and
processForSite. Fix this by not handing back terminated processes.

Test: Tools/TestWebKitAPI/Tests/WebKit/WKWebView/SiteIsolation.mm

* Source/WebKit/UIProcess/BrowsingContextGroup.cpp:
(WebKit::BrowsingContextGroup::sharedProcessForSite):
(WebKit::BrowsingContextGroup::ensureProcessForSite):
(WebKit::BrowsingContextGroup::liveSharedProcess):
(WebKit::BrowsingContextGroup::clearSharedProcess):
(WebKit::BrowsingContextGroup::processForSite):
(WebKit::BrowsingContextGroup::processDidTerminate):
(WebKit::BrowsingContextGroup::removeFrameProcess):
* Source/WebKit/UIProcess/BrowsingContextGroup.h:
* Source/WebKit/UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::resetStateAfterProcessExited):
* Tools/TestWebKitAPI/Tests/WebKit/WKWebView/SiteIsolation.mm:
(TestWebKitAPI::(SiteIsolation, SharedProcessNotReusedAfterCrash)):
(TestWebKitAPI::(SiteIsolation, SharedProcessMainFrameNotReusedAfterCrash)):
(TestWebKitAPI::(SiteIsolation, 
SharedProcessShutsDownWhenLastRemoteFrameIsRemoved)):

Canonical link: https://commits.webkit.org/320297@main



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