[Webkit-unassigned] [Bug 155016] New: [GTK] WebProcess from WebKitGtk+ 2.11.90 terminates with SIGBUS in ASCIIFastPath.h

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=155016

            Bug ID: 155016
           Summary: [GTK] WebProcess from WebKitGtk+ 2.11.90 terminates
                    with SIGBUS in ASCIIFastPath.h
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: agomez at igalia.com
                CC: bugs-noreply at webkitgtk.org

Created attachment 272851
  --> https://bugs.webkit.org/attachment.cgi?id=272851&action=review
BT from gdb

I'm using WebKitGtk+ with my own JHBuild setting:
https://github.com/tanty/jhbuild-epiphany/tree/master

Epiphany 3.18.0 and WebKit 2.11.90

I'm running Epiphany with the dconf key:

"process-model" = "shared-secondary-process"

The compilation was done with CMake args:

'-DPORT=GTK -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_FLAGS_RELEASE="-O0 -g1 -DNDEBUG -DG_DISABLE_CAST_CHECKS" -DCMAKE_CXX_FLAGS_RELEASE="-O0 -g1 -DNDEBUG -DG_DISABLE_CAST_CHECKS"'

When visiting several pages, eventually, WebKitWebProcess hits a SIGBUS and terminates. This doesn't kill epiphany, which is able to span another WebKitWebProcess and continue browsing after reloading the tab.

This bug is not reproducible in a predictable way.

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