[Webkit-unassigned] [Bug 255913] New: [GTK] webkit in headless mode crash on gtk_widget_destroy or g_object_unref

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=255913

            Bug ID: 255913
           Summary: [GTK] webkit in headless mode crash on
                    gtk_widget_destroy or g_object_unref
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Keywords: Gtk
          Severity: Normal
          Priority: P3
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dvoreader at gmail.com
                CC: bugs-noreply at webkitgtk.org

Thread 1 "wkgtkprinter" received signal SIGSEGV, Segmentation fault.
webkitWebViewBaseMakeGLContextCurrent () at ./Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.cpp:2670
2670    ./Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.cpp: No such file or directory.
(gdb) f 1
#1  0x00007ffff4a52d1b in WebKit::WaylandCompositor::Surface::setWebPage () at ./Source/WebKit/UIProcess/gtk/WaylandCompositor.cpp:184
Download failed: Invalid argument.  Continuing without source file ./build-soup2/./Source/WebKit/UIProcess/gtk/WaylandCompositor.cpp.
184     ./Source/WebKit/UIProcess/gtk/WaylandCompositor.cpp: No such file or directory.
(gdb) f 2
#2  0x00007ffff4a53c80 in WebKit::WaylandCompositor::unregisterWebPage () at ./Source/WebKit/UIProcess/gtk/WaylandCompositor.cpp:597
597     in ./Source/WebKit/UIProcess/gtk/WaylandCompositor.cpp
(gdb) f 3
#3  0x00007ffff4a49318 in WebKit::AcceleratedBackingStoreWayland::~AcceleratedBackingStoreWayland ()
    at ./Source/WebKit/UIProcess/gtk/AcceleratedBackingStoreWayland.cpp:246
Download failed: Invalid argument.  Continuing without source file ./build-soup2/./Source/WebKit/UIProcess/gtk/AcceleratedBackingStoreWayland.cpp.
246     ./Source/WebKit/UIProcess/gtk/AcceleratedBackingStoreWayland.cpp: No such file or directory.
(gdb) f 4
#4  0x00007ffff4a4937d in WebKit::AcceleratedBackingStoreWayland::~AcceleratedBackingStoreWayland ()
    at ./Source/WebKit/UIProcess/gtk/AcceleratedBackingStoreWayland.cpp:251
251     in ./Source/WebKit/UIProcess/gtk/AcceleratedBackingStoreWayland.cpp
(gdb) f 5
#5  0x00007ffff49bc429 in std::default_delete<WebKit::AcceleratedBackingStore>::operator() () at /usr/include/c++/11/bits/unique_ptr.h:85
85              delete __ptr;
(gdb) f 6
#6  std::__uniq_ptr_impl<WebKit::AcceleratedBackingStore, std::default_delete<WebKit::AcceleratedBackingStore> >::reset () at /usr/include/c++/11/bits/unique_ptr.h:182
182               _M_deleter()(__old_p);
(gdb) f 7
#7  std::unique_ptr<WebKit::AcceleratedBackingStore, std::default_delete<WebKit::AcceleratedBackingStore> >::reset () at /usr/include/c++/11/bits/unique_ptr.h:456
456             _M_t.reset(std::move(__p));
(gdb) f 8
#8  std::unique_ptr<WebKit::AcceleratedBackingStore, std::default_delete<WebKit::AcceleratedBackingStore> >::operator=(decltype(nullptr)) ()
    at /usr/include/c++/11/bits/unique_ptr.h:397
397             reset();
(gdb) f 9
#9  webkitWebViewBaseDispose () at ./Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.cpp:724
Download failed: Invalid argument.  Continuing without source file ./build-soup2/./Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.cpp.
724     ./Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.cpp: No such file or directory.
(gdb) f 10
#10 0x00007ffff3dc3011 in g_object_run_dispose () from /lib/x86_64-linux-gnu/libgobject-2.0.so.0


I wrote a library for converting HTML to PDF using WebkitGtk,
see the code here https://github.com/gnudles/wkgtkprinter/blob/master/wkgtkprinter.c

When I try to free the webkit_view, I get a segmentation fault.

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