When the garbage collector crashes like that, that indicates that there's a
broken object on the heap. This could have any number of reasons (notably
including V8 bugs, embedder bugs, flaky hardware), so without further data
it's impossible to tell if this particular instance is known and/or fixed.

On Fri, Sep 2, 2016 at 1:17 AM, Jane Chen <jxche...@gmail.com> wrote:

> Embedding v8 4.6.88.
>
> Running a memory-consuming script.  Sometimes I get a fatal error callback
> due to "process out of memory" which I now handle.  Other times v8 just
> crashes in CollectGarbage:
>
> 2016-08-25 17:25:49.649 Critical: #5 <signal handler called>
> 2016-08-25 17:25:49.649 Critical: #6 0x00007f71f69d67fd in void
> v8::internal::FlexibleBodyVisitor<v8::internal::
> IncrementalMarkingMarkingVisitor, v8::internal::JSObject::BodyDescriptor,
> void>::VisitSpecialized<32>(v8::internal::Map*,
> v8::internal::HeapObject*) () from lib/libv8.so
> 2016-08-25 17:25:49.649 Critical: #7 0x00007f71f69d0857 in 
> v8::internal::IncrementalMarking::Step(long,
> v8::internal::IncrementalMarking::CompletionAction, v8::internal::
> IncrementalMarking::ForceMarkingAction, 
> v8::internal::IncrementalMarking::ForceCompletionAction)
> () from lib/libv8.so
> 2016-08-25 17:25:49.649 Critical: #8 0x00007f71f69a575e in
> v8::internal::Heap::CollectGarbage(v8::internal::GarbageCollector, char
> const*, char const*, v8::GCCallbackFlags) () from lib/libv8.so
> 2016-08-25 17:25:49.649 Critical: #9 0x00007f71f695bb37 in
> v8::internal::Factory::NewUninitializedFixedArray(int) () from
> lib/libv8.so
> 2016-08-25 17:25:49.649 Critical: #10 0x00007f71f69673a7 in
> v8::internal::Factory::NewJSArrayStorage(v8::
> internal::Handle<v8::internal::JSArray>, int, int, 
> v8::internal::ArrayStorageAllocationMode)
> () from lib/libv8.so
> 2016-08-25 17:25:49.649 Critical: #11 0x00007f71f6967172 in
> v8::internal::Factory::NewJSArray(v8::internal::ElementsKind, int, int,
> v8::internal::Strength, v8::internal::ArrayStorageAllocationMode,
> v8::internal::PretenureFlag) () from lib/libv8.so
> 2016-08-25 17:25:49.649 Critical: #12 0x00007f71f6830a53 in
> v8::internal::Builtin_ArraySplice(int, v8::internal::Object**,
> v8::internal::Isolate*) () from lib/libv8.so
>
> Is this a known bug?  Is it fixed in a more recent release?
>
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