Created attachment 299487 [details] BT from gdb for the WebProcess I'm using WebKitGtk+ with my own JHBuild setting: https://github.com/tanty/jhbuild-epiphany/tree/master Epiphany 3.20.6 and WebKit 2.15.3 I'm running Epiphany with the dconf key: "process-model" = "shared-secondary-process" And the env variable: "export LIBGL_DRI3_DISABLE=1" The compilation was done with CMake args: '-DPORT=GTK -DCMAKE_BUILD_TYPE=Release -DENABLE_MINIBROWSER=ON -DCMAKE_C_FLAGS_RELEASE="-O0 -g -DNDEBUG -DG_DEBUG=fatal-criticals -DG_DISABLE_CAST_CHECKS" -DCMAKE_CXX_FLAGS_RELEASE="-O0 -g -DNDEBUG -DG_DEBUG=fatal-criticals -DG_DISABLE_CAST_CHECKS"' After visiting several pages, eventually, the WebProcess hits a SIGSEV. This bug is not reproducible in a predictable way.
Created attachment 299700 [details] Patch
Comment on attachment 299700 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=299700&action=review > Source/WebCore/platform/graphics/texmap/TextureMapperGL.cpp:691 > + Platform3DObject vbo = data().getStaticVBO(GraphicsContext3D::ARRAY_BUFFER, sizeof(GC3Dfloat) * 8, unitRect); I think you can use sizeof(uniRect) instead of the magic number 8.
Comment on attachment 299700 [details] Patch Attachment 299700 [details] did not pass mac-ews (mac): Output: http://webkit-queues.webkit.org/results/2947032 New failing tests: imported/w3c/web-platform-tests/html/browsers/history/the-location-interface/location-protocol-setter-non-broken.html
Created attachment 299706 [details] Archive of layout-test-results from ews101 for mac-elcapitan The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews101 Port: mac-elcapitan Platform: Mac OS X 10.11.6
Comment on attachment 299700 [details] Patch Clearing flags on attachment: 299700 Committed r211204: <http://trac.webkit.org/changeset/211204>
All reviewed patches have been landed. Closing bug.
*** Bug 167470 has been marked as a duplicate of this bug. ***