[Webkit-unassigned] [Bug 179656] New: Debug WebKit crashes instantly in WebKit::WebPageProxy::processDidFinishLaunching()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=179656

            Bug ID: 179656
           Summary: Debug WebKit crashes instantly in
                    WebKit::WebPageProxy::processDidFinishLaunching()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rniwa at webkit.org
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

At r224801, Safari crashes upon launch:

ASSERTION FAILED: m_process->state() == WebProcessProxy::State::Running
/Volumes/Data/webkit2/Source/WebKit/UIProcess/WebPageProxy.cpp(4062) : void WebKit::WebPageProxy::processDidFinishLaunching()
1   0x1029dad0d WTFCrash
2   0x10693f7db WebKit::WebPageProxy::processDidFinishLaunching()
3   0x106b5c90c WebKit::WebProcessProxy::didFinishLaunching(WebKit::ProcessLauncher*, IPC::Connection::Identifier)
4   0x106440869 WebKit::ProcessLauncher::didFinishLaunchingProcess(int, IPC::Connection::Identifier)
5   0x1064424f1 WebKit::ProcessLauncher::launchProcess()::$_0::operator()(NSObject<OS_xpc_object>*) const
6   0x1064423a1 invocation function for block in WebKit::ProcessLauncher::launchProcess()
7   0x7fffabd05f96 _xpc_connection_call_event_handler
8   0x7fffabd07b98 do_mach_notify_port_destroyed
9   0x7fffabd07ad4 _Xmach_notify_port_destroyed
10  0x7fffabd07a76 notify_server
11  0x7fffabd10bdc _xpc_connection_pass2mig
12  0x7fffabd0492d _xpc_connection_mach_event
13  0x7fffaba82726 _dispatch_client_callout4
14  0x7fffaba82999 _dispatch_mach_msg_invoke
15  0x7fffaba927db _dispatch_queue_serial_drain
16  0x7fffaba81497 _dispatch_mach_invoke
17  0x7fffaba89908 _dispatch_main_queue_callback_4CF
18  0x7fff9633dbc9 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
19  0x7fff962fec0d __CFRunLoopRun
20  0x7fff962fe114 CFRunLoopRunSpecific
21  0x7fff9585eebc RunCurrentEventLoopInMode
22  0x7fff9585ecf1 ReceiveNextEventCommon
23  0x7fff9585eb26 _BlockUntilNextEventMatchingListInModeWithFilter
24  0x7fff93df7a54 _DPSNextEvent
25  0x7fff945737ee -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:]
26  0x1007ad578 -[BrowserApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
27  0x7fff93dec3db -[NSApplication run]
28  0x7fff93db6e0e NSApplicationMain
29  0x7fffabab2235 start

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