SIGSEGV crash in ObjectMonitor::enter with latest Shenandoah JDK8

[Alexander Yakushev]

Hello again! After some time, I finally managed to reproduce the crash in a
non-production environment with +ShenandoahVerify. I attach the hs_err file.

This was reproduced with a regular shenandoah-jdk8 build. Meanwhile, I've
built the application with fastdebug build and will try with that too if
necessary.

On Mon, 4 Nov 2019 at 13:09, Aleksey Shipilev <shade at redhat.com> wrote:

> On 11/1/19 10:50 PM, Aleksey Shipilev wrote:
> > On 11/1/19 9:21 PM, Alexander Yakushev wrote:
> >> This happened two times today as I increased the load on the process.
> >> Here's a piece of the error file:
> >>
> https://gist.github.com/alexander-yakushev/828617521ab0368d7bff854745f1fec8
> .
> >> I can't share all of it, unfortunately, but I will try to make a
> >> lightweight reproducible case
> >
> > Yes, MCVE would be very handy.
> >
> >> Hope this helps, I will try to provide more context if necessary.
> >
> > Full hs_err; fastdebug build; +ShenandoahVerify -- or any combination of
> the above would help.
>
> I tried a few combinations of Netty, jcstress and adhoc tests with
> advanced verification, and still
> cannot reproduce it. Can you send me the full hs_err somehow?
>
> --
> Thanks,
> -Aleksey
>
>