[Webkit-unassigned] [Bug 202786] Wasm engine segmentation fault

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=202786

--- Comment #6 from Jan M <mail at janmidtgaard.dk> ---
With a ulimit -c unlimited I get a core dump that can be loaded with lldb.
Here's a stack trace from the nightly build:

$ lldb -c /cores/core.75180 
(lldb) target create --core "/cores/core.75180"
Core file '/cores/core.75180' (x86_64) was loaded.
(lldb) bt
* thread #1, stop reason = signal SIGSTOP
  * frame #0: 0x0000020be155cb2c
    frame #1: 0x0000020be155cd38
    frame #2: 0x00000001094d82af JavaScriptCore`vmEntryToJavaScript + 200
    frame #3: 0x000000010a00639c JavaScriptCore`JSC::callWebAssemblyFunction(JSC::JSGlobalObject*, JSC::CallFrame*) + 1116
    frame #4: 0x0000020be155c16b
    frame #5: 0x00000001094eec90 JavaScriptCore`llint_entry + 92211
    frame #6: 0x00000001094eec90 JavaScriptCore`llint_entry + 92211
    frame #7: 0x00000001094eec90 JavaScriptCore`llint_entry + 92211
    frame #8: 0x00000001094eec90 JavaScriptCore`llint_entry + 92211
    frame #9: 0x00000001094eec90 JavaScriptCore`llint_entry + 92211
    frame #10: 0x00000001094d82af JavaScriptCore`vmEntryToJavaScript + 200
    frame #11: 0x0000000109b18ce9 JavaScriptCore`JSC::Interpreter::executeProgram(JSC::SourceCode const&, JSC::CallFrame*, JSC::JSObject*) + 11785
    frame #12: 0x0000000109da2668 JavaScriptCore`JSC::evaluate(JSC::CallFrame*, JSC::SourceCode const&, JSC::JSValue, WTF::NakedPtr<JSC::Exception>&) + 328
    frame #13: 0x000000010920864c javascriptcore`jscmain(int, char**) + 3804
    frame #14: 0x000000010920775b javascriptcore`main + 27
    frame #15: 0x00007fff90d67235 libdyld.dylib`start + 1
(lldb)

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