[Webkit-unassigned] [Bug 142079] New: REGRESSION(r177075): WebProcess crashes when entering accelerating compositing mode before the WebView is realized

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=142079

            Bug ID: 142079
           Summary: REGRESSION(r177075): WebProcess crashes when entering
                    accelerating compositing mode before the WebView is
                    realized
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: Gtk, Regression
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: cgarcia at igalia.com
                CC: gns at gnome.org, j.isorce at samsung.com,
                    mrobinson at webkit.org, zan at falconsigh.net

Yet another regression of r177075, where the creation of the redirected composited window was moved to realize method.

Program received signal SIGSEGV, Segmentation fault.
0x00007fc4570b8790 in WebKit::LayerTreeHostGtk::compositeLayersToContext(WebKit::LayerTreeHostGtk::CompositePurpose) ()
   from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
(gdb) bt
#0  0x00007fc4570b8790 in WebKit::LayerTreeHostGtk::compositeLayersToContext(WebKit::LayerTreeHostGtk::CompositePurpose) ()
   from WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#1  0x00007fc4570b88bb in WebKit::LayerTreeHostGtk::sizeDidChange(WebCore::IntSize const&) () from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#2  0x00007fc4570b253b in WebKit::DrawingAreaImpl::updateBackingStoreState(unsigned long, bool, float, WebCore::IntSize const&, WebCore::IntSize const&) ()
   from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#3  0x00007fc4570de606 in void IPC::handleMessage<Messages::DrawingArea::UpdateBackingStoreState, WebKit::DrawingArea, void (WebKit::DrawingArea::*)(unsigned long, bool, float, WebCore::IntSize const&, WebCore::IntSize const&)>(IPC::MessageDecoder&, WebKit::DrawingArea*, void (WebKit::DrawingArea::*)(unsigned long, bool, float, WebCore::IntSize const&, WebCore::IntSize const&)) () from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#4  0x00007fc4570de4df in WebKit::DrawingArea::didReceiveMessage(IPC::Connection&, IPC::MessageDecoder&) ()
   from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#5  0x00007fc456eb5280 in IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::MessageDecoder&) ()
   from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#6  0x00007fc456fa60f9 in WebKit::WebProcess::didReceiveMessage(IPC::Connection&, IPC::MessageDecoder&) ()
   from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#7  0x00007fc456eb194b in IPC::Connection::dispatchMessage(std::unique_ptr<IPC::MessageDecoder, std::default_delete<IPC::MessageDecoder> >) ()
   from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#8  0x00007fc456eb2364 in IPC::Connection::dispatchOneMessage() () from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#9  0x00007fc458442734 in WTF::RunLoop::performWork() () from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#10 0x00007fc4558a0525 in WTF::GMainLoopSource::voidCallback() () from WebKitBuild/Release/lib/libjavascriptcoregtk-4.0.so.18
#11 0x00007fc45589e5ba in WTF::GMainLoopSource::voidSourceCallback(WTF::GMainLoopSource*) () from WebKitBuild/Release/lib/libjavascriptcoregtk-4.0.so.18
#12 0x00007fc4527f4aed in g_main_dispatch (context=0x24f7e50) at gmain.c:3122
#13 g_main_context_dispatch (context=context at entry=0x24f7e50) at gmain.c:3737
#14 0x00007fc4527f4e88 in g_main_context_iterate (context=0x24f7e50, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3808
#15 0x00007fc4527f51a2 in g_main_loop_run (loop=0x2b35c90) at gmain.c:4002
#16 0x00007fc4570b73b2 in WebProcessMainUnix () from WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#17 0x00007fc44cebdb45 in __libc_start_main (main=0x400aa0 <main>, argc=2, argv=0x7fff5d409608, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, 
    stack_end=0x7fff5d4095f8) at libc-start.c:287
#18 0x0000000000400af5 in _start ()

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