[Webkit-unassigned] [Bug 167064] New: [GTK] WebProcess from WebKitGtk+ 2.15.2 SIGSEVs in JSC::Lexer<unsigned char>::setCode(JSC::SourceCode const&, JSC::ParserArena*) at Source/JavaScriptCore/parser/Lexer.cpp:571

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=167064

            Bug ID: 167064
           Summary: [GTK] WebProcess from WebKitGtk+ 2.15.2 SIGSEVs in
                    JSC::Lexer<unsigned char>::setCode(JSC::SourceCode
                    const&, JSC::ParserArena*) at
                    Source/JavaScriptCore/parser/Lexer.cpp:571
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            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 298892
  --> https://bugs.webkit.org/attachment.cgi?id=298892&action=review
BT from gdb for the WebProcess

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

Epiphany 3.20.3 and WebKit 2.15.2 with the attached patches for bug 164049, bug 165200, bug 165283 and bug 164052, applied.

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.

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