[Webkit-unassigned] [Bug 179914] New: [GTK] WebProcess from WebKitGtk+ 2.17.92 SIGSEVs in bmalloc::IsoTLS::ensureEntries(unsigned int) at Source/bmalloc/bmalloc/IsoTLS.cpp:80

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=179914

            Bug ID: 179914
           Summary: [GTK] WebProcess from WebKitGtk+ 2.17.92 SIGSEVs in
                    bmalloc::IsoTLS::ensureEntries(unsigned int) at
                    Source/bmalloc/bmalloc/IsoTLS.cpp:80
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Critical
          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 327398

  --> https://bugs.webkit.org/attachment.cgi?id=327398&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

MiniBrowser from WebKit 2.17.92.

The compilation was done with CMake args:

'-DDEBUG_FISSION=OFF -DPORT=GTK -DCMAKE_BUILD_TYPE=Release -DENABLE_MINIBROWSER=ON -DUSE_WOFF2=OFF -DCMAKE_C_FLAGS_RELEASE="-O0 -g -DNDEBUG -DG_DISABLE_CAST_CHECKS -DRELEASE_WITHOUT_OPTIMIZATIONS" -DCMAKE_CXX_FLAGS_RELEASE="-O0 -g -DNDEBUG -DG_DISABLE_CAST_CHECKS -DRELEASE_WITHOUT_OPTIMIZATIONS"'

The WebProcess SIGSEVs immediately after launching.

100% reproducibility.  It is unusable.

This was not happening with 2.17.91, with the same compilation flags.

Core from coredumpctl.

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