JVM Crash @ ZPageCache::alloc_small_page()

[Ruslan Synytsky]

Hi Per, we have not tested it inside other container engines, as Virtuozzo
is the only virtualization engine we use for our certified container
runtimes due to security and high density reasons. I will ask the team to
check it with the Docker container engine as well. I can give you access to
the ready to go test env where you can easily reproduce the issue. Also, if
you need any additional information or enable debug options please just let
me know.

Thank you
Rusan

On Mon, 9 Nov 2020 at 21:26, Per Liden <per.liden at oracle.com> wrote:

> Hi Ruslan,
>
> I had a look at the hs_err and the point where it crashes, and it looks
> like memory some kind of corruption. I haven't see this error before. Is
> it only reproducible when running inside a Virtuozzo container?
>
> cheers,
> Per
>
> On 11/7/20 5:20 PM, Ruslan Synytsky wrote:
> > Hi Per, we faced a strange issue with constant JVM crashes when using
> > ZGC. The crash log is attached. We run JVM inside Virtuozzo containers.
> > Could you please take a look and advise on how it can be fixed?
> > Thank you
> >
> > #
> > # A fatal error has been detected by the Java Runtime Environment:
> > #
> > #  SIGSEGV (0xb) at pc=0x00007f4f5e226f43, pid=6428, tid=6544
> > #
> > # JRE version: OpenJDK Runtime Environment (15.0.1+9) (build 15.0.1+9-18)
> > # Java VM: OpenJDK 64-Bit Server VM (15.0.1+9-18, mixed mode, sharing,
> > tiered, z gc, linux-amd64)
> > # Problematic frame:
> > # V  [libjvm.so+0xdbdf43]  ZPageCache::alloc_small_page()+0x33
> > #
> > # No core dump will be written. Core dumps have been disabled. To enable
> > core dumping, try "ulimit -c unlimited" before starting Java again
> > #
> > # If you would like to submit a bug report, please visit:
> > # https://bugreport.java.com/bugreport/crash.jsp
> > #
> >
> > ---------------  S U M M A R Y ------------
> >
> > Command Line: -XX:+UnlockExperimentalVMOptions
> > -XX:ZCollectionInterval=900 -Xmaxf0.3 -Xminf0.1 -Xmx409M -Xms32M
> > -XX:+UseZGC -Xlog:gc jelastic-helloworld-1.1.war
> >
> > Host: Intel(R) Xeon(R) E-2136 CPU @ 3.30GHz, 1 cores, 512M, CentOS Linux
> > release 7.8.2003 (Core)
> > Time: Thu Nov  5 10:32:35 2020 UTC elapsed time: 0.105994 seconds (0d 0h
> > 0m 0s)
> >
> >
> > --
> > Ruslan Synytsky
> > CEO @ Jelastic Multi-Cloud PaaS <https://jelastic.com/>
> >
> >
> >
>