On Thu, Mar 7, 2013 at 9:05 AM, Jan Vrany <[email protected]> wrote:
> On 07/03/13 15:58, Sven Van Caekenberghe wrote:
>
>> I am getting crazy, it seems to be pretty random, sometimes it works,
>> most of the time it doesn't.
>>
>
> Well, if it sometimes happen and sometimes not and on other machines
> the same binary works like a charm, I would say this is due to a
> memory corruption - but you probably know that already :-)
>
> The crash in #becomeForward: is likely as it scans whole memory
> and sooner or later, it hit the corrupt object. So I think the
> #becomeForward: is probably not the bad guy here.
>
We know what the bug is; attempting to become jitted methods. I think I
have a fix. I did two versions of it recently. Esteban is trying to get
people to try and reproduce the crash with the latest VM. I *think* can
tell Sven's crash above is not using the latest VM because it is crashing
with a segmentation fault instead of exiting with an error message. I
expect the VM to abort with an error message that reads either
attempt to become two cogged methods
or
attempt to become cogged method into different method
>
>
>
>
>> On 07 Mar 2013, at 16:40, Esteban Lorenzano <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> vm version?
>>>
>>
>>
>> On both 32 and 64 bit...
>>
>> On Mar 7, 2013, at 4:35 PM, Sven Van Caekenberghe <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>>
>>>> On 07 Mar 2013, at 15:31, Sven Van Caekenberghe <[email protected]
>>>> <mailto:[email protected]>> wrote:
>>>>
>>>> I am still investigating, but it seems things changed in the Ubuntu
>>>>> universe regarding ia32-libs on 64 bit (it does no longer exist).
>>>>> Maybe that is a factor as well, I am not sure.
>>>>>
>>>>
>>>> I just installed a fresh 64-bit Ubuntu 12.10 Desktop in VirtualBox
>>>> and tried my build there.
>>>>
>>>> sudo apt-get install ia32-libs
>>>>
>>>> is like a virtual package now that installs :i386 versions of already
>>>> installed libraries (or something like that).
>>>>
>>>> Anyway, the VM worked but crashed when doing my build, again in
>>>> #becomeForward:
>>>>
>>>> So it looks like is related to 32/64 bit differences.
>>>>
>>>> What kind of Linux machines are the build slaves in the CI
>>>> infrastructure ?
>>>>
>>>> Sven
>>>>
>>>>
>>>> --
>>>> Sven Van Caekenberghe
>>>> http://stfx.eu
>>>> Smalltalk is the Red Pill
>>>>
>>>>
>>>>
>>>
>>>
>>
>
>
--
best,
Eliot
