JVM Crash @ ZPageCache::alloc_small_page()

[Stefan Karlsson]

FWIW, we had one assert in this area, but it was assumed that it was a 
hardware bug. See:
https://bugs.openjdk.java.net/browse/JDK-8245765

StefanK

On 2020-11-09 20:24, Per Liden 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/>
>>
>>
>>