[Webkit-unassigned] [Bug 138740] New: Network process crash when running http/tests/appcache/fallback.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=138740

            Bug ID: 138740
           Summary: Network process crash when running
                    http/tests/appcache/fallback.html
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: Soup
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: cgarcia at igalia.com
                CC: ap at webkit.org, beidson at apple.com

It happens because ResourceHandle::continueWillSendRequest() is called with a null request. Mac doesn't crash, I guess because they correctly handle the case of a null request. We could handle that in Soup, of course, but the thing is that the behaviour is not the same for async loads, or when loading with in the web process. In WebResourceLoader::willSendRequest(), ResourceRequest::willSendRequest is called, that cancels the load if the client returns a null request. In this case, the Resource Loader is detached and WebResourceLoader::willSendRequest() returns early without sending the ContinueWillSendRequest message to the network process. However, for synchronous loads, NetworkResourceLoader::continueWillSendRequest() is always called.

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