[Mono-dev] Regressions on 3.13.0-46-generic -> 3.13.0-48-generic

[Greg Young]

3.13.0-63-generic does not have the issue as well.

I guess our mitigation will just be to know about the issue and
suggest downgrade/upgrade. This may however be useful for others in
the future. Mono 3.12.1 on 3.13.0-46-generic #77-Ubuntu SMP appears to
not be stable. We will also test mono4 now.

Greg

On Thu, Sep 17, 2015 at 11:38 AM, Greg Young <gregoryyoung1 at gmail.com> wrote:
> We are running into some interesting regressions with mono. We are
> seeing many failures such as:
>
> Mono v3.12.1 (we have considered moving up to 4.1 or 4.2 but the last
> time we tested it didn't seem safe to move).
>
> Native stacktrace:
>
> /home/ubuntu/EventStore-OSS-Ubuntu-v3.2.1/eventstored() [0x609a4f]
> /home/ubuntu/EventStore-OSS-Ubuntu-v3.2.1/eventstored() [0x5bdecf]
> /home/ubuntu/EventStore-OSS-Ubuntu-v3.2.1/eventstored() [0x453b19]
> /lib/x86_64-linux-gnu/libpthread.so.0(+0x10340) [0x7fd9709b7340]
> /home/ubuntu/EventStore-OSS-Ubuntu-v3.2.1/eventstored() [0x4e6145]
> [0x40e21ceb]
>
>
> [03041,21,13:43:11.379] Global Unhandled Exception occurred.
> Object reference not set to an instance of an object
> [ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException:
> Object reference not set to an instance of an object
>   at EventStore.Core.Bus.QueuedHandlerAutoReset.ReadFromQueue
> (System.Object o) [0x00000] in <filename unknown>:0
>   at System.Threading.Thread.StartInternal () [0x00000] in <filename unknown>:0
>
> note that this isn't a real nre
>
> We do not see these regressions in Linux ip-172-31-37-60
> 3.13.0-46-generic #77-Ubuntu SMP
>
> We do see them in Linux ip-172-31-40-115 3.13.0-48-generic #80-Ubuntu SMP
>
> Anyone have any ideas how to debug this further? These are not
> deterministic issues.
>
> Cheers,
>
> Greg
>
> --
> Studying for the Turing test



-- 
Studying for the Turing test