Version-Release number of selected component:
webkitgtk4-2.20.1-1.fc27

Additional info:
reporter:       libreport-2.9.3
backtrace_rating: 4
cmdline:        /usr/libexec/webkit2gtk-4.0/WebKitWebProcess 2 27
crash_function: WebCore::GLContext::version
executable:     /usr/libexec/webkit2gtk-4.0/WebKitWebProcess
journald_cursor: s=efbcb8cdcbe0464286cef2fceb165323;i=83c8e;b=3b76345c2c6e440a8f26dbd77be6db29;m=1f68480e3;t=56aa3e7a31a17;x=5ae1779804d7d9de
kernel:         4.15.17-300.fc27.x86_64
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 WebCore::GLContext::version at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/WebCore/platform/graphics/GLContext.cpp:172
 #1 WebCore::TextureMapperGLData::~TextureMapperGLData at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/WebCore/platform/graphics/texmap/TextureMapperGL.cpp:130
 #2 WebCore::TextureMapperGL::~TextureMapperGL at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/WebCore/platform/graphics/texmap/TextureMapperGL.cpp:673
 #4 std::default_delete<WebCore::TextureMapper>::operator() at /usr/include/c++/7/bits/unique_ptr.h:78
 #5 std::unique_ptr<WebCore::TextureMapper, std::default_delete<WebCore::TextureMapper> >::reset at /usr/include/c++/7/bits/unique_ptr.h:376
 #6 std::unique_ptr<WebCore::TextureMapper, std::default_delete<WebCore::TextureMapper> >::operator=(decltype(nullptr)) at /usr/include/c++/7/bits/unique_ptr.h:312
 #7 WebKit::CoordinatedGraphicsScene::purgeGLResources at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedGraphicsScene.cpp:606
 #8 WTF::Function<void()>::CallableWrapper<WebKit::ThreadedCompositor::invalidate()::<lambda()> >::call(void) at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/ThreadedCompositor.cpp:110
 #9 WTF::Function<void()>::CallableWrapper<WebKit::CompositingRunLoop::performTaskSync(WTF::Function<void()>&&)::<lambda()> >::call(void) at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/x86_64-redhat-linux-gnu/DerivedSources/ForwardingHeaders/wtf/Function.h:56
 #10 WTF::Function<void ()>::operator()() const at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/WTF/wtf/Function.h:56