another segfault from Pharo5.0 vm (freshly downloaded today) Ubuntu 14.04

Me too I get from time to time a VM crash (sometimes after a smalltalkhub hiccups).

Stef

For the record, I do also continue to see this crash in Pharo 5.0 with it's stable VM. 

But as Esteban said, it's too random that I don't have more info to share :(

On Mon, Aug 8, 2016 at 6:39 AM, Esteban Lorenzano <[hidden email]> wrote:

damn :(
FreeType bug strikes again… :((

to be honest, I’m playing with the idea to completely replace it with a UFFI version.
I cannot find why/how this happens… in some conditions handle become invalid and pharo has no idea pointer is not valid any more… then crash. Double free was what I guess but I do not find where that happens (the double free). And I’m also open to believe in some memory handling problem in VM, now :((

Esteban

> On 05 Aug 2016, at 22:55, Dale Henrichs <[hidden email]> wrote:
>
> Attached crash dump file ...
>
> This one occurred after I'd had an image open for several hours interesting that similar to the other crashes I've seen recently FreeTypeFace seems to be implicated:
>
> Smalltalk stack dump:
> 0xff7bc02c I [] in FreeTypeFace(FT2Handle)>pvtDestroyHandle 0xcdeae10: a(n) FreeTypeFace
> 0xff7bc04c M BlockClosure>ensure: 0x9edc9b0: a(n) BlockClosure
> 0xff7bc078 I [] in Mutex>critical: 0xadc7960: a(n) Mutex
> 0xff7bc098 M [] in Semaphore>critical: 0xba42d50: a(n) Semaphore
> 0xff7bc0b8 M BlockClosure>ensure: 0x9edcab8: a(n) BlockClosure
> 0xff7bc0d8 M Semaphore>critical: 0xba42d50: a(n) Semaphore
> 0xff7bc100 I Mutex>critical: 0xadc7960: a(n) Mutex
> 0xff7bc124 I FreeTypeFace(FT2Handle)>pvtDestroyHandle 0xcdeae10: a(n) FreeTypeFace
> 0xff7bc13c M FreeTypeFace(FT2Handle)>finalize 0xcdeae10: a(n) FreeTypeFace
> 0xff7bc154 M ByteSymbol(Symbol)>value: 0xa3ab850: a(n) ByteSymbol
> 0xff7bc178 M ObjectFinalizerCollection(OrderedCollection)>do: 0xaa62580: a(n) ObjectFinalizerCollection
> 0xff7bc19c I ObjectFinalizerCollection>finalize 0xaa62580: a(n) ObjectFinalizerCollection
> 0xff7bc1c0 I WeakFinalizerItem>finalizeValues 0xb8cae80: a(n) WeakFinalizerItem
> 0xff7bc1dc M [] in WeakRegistry>finalizeValues 0xa6dd690: a(n) WeakRegistry
> 0xff7bc1f4 M BlockClosure>on:do: 0x9edc8a8: a(n) BlockClosure
> 0xff7bc214 M BlockClosure>on:fork: 0x9edc8a8: a(n) BlockClosure
> 0xff7bc234 M [] in WeakRegistry>finalizeValues 0xa6dd690: a(n) WeakRegistry
> 0xff7bc258 M OrderedCollection>do: 0x9edc450: a(n) OrderedCollection
> 0xff7bc280 M WeakRegistry>finalizeValues 0xa6dd690: a(n) WeakRegistry
> 0xff7bc29c M [] in WeakArray class>finalizationProcess 0xa5cefc0: a(n) WeakArray class
> 0xff7bc2b4 M BlockClosure>on:do: 0x9edc398: a(n) BlockClosure
> 0xff7bc2d4 M BlockClosure>on:fork: 0x9edc398: a(n) BlockClosure
> 0xff7bc2f4 M [] in WeakArray class>finalizationProcess 0xa5cefc0: a(n) WeakArray class
> 0xff7bc318 M WeakArray(SequenceableCollection)>do: 0xa381328: a(n) WeakArray
> 0xff7bc33c I [] in WeakArray class>finalizationProcess 0xa5cefc0: a(n) WeakArray class
> 0xff7bc35c M [] in Semaphore>critical: 0xcc147b0: a(n) Semaphore
> 0xff7bc37c M BlockClosure>ensure: 0x9edb760: a(n) BlockClosure
> 0xff7bc39c M Semaphore>critical: 0xcc147b0: a(n) Semaphore
> 0xff7bc3c0 I WeakArray class>finalizationProcess 0xa5cefc0: a(n) WeakArray class
> 0xbd19fe8 s [] in WeakArray class>restartFinalizationProcess
> 0xce10050 s [] in BlockClosure>newProcess
>
> Looks like pvtDestroyHandle went a little overboard:)
>
> Dale

> <crash.dmp>

--

Mariano
http://marianopeck.wordpress.com