RFR: 6744: Upgrading to Eclipse RCP 2020-03

[Marcus Hirt]

On Thu, 26 Mar 2020 17:26:03 GMT, Alex Macdonald <aptmac at openjdk.org> wrote:

>> Built okay on Linux Fedora 30. However when running jmc against:
>> openjdk version "11.0.6" 2020-01-14
>> OpenJDK Runtime Environment 18.9 (build 11.0.6+10)
>> OpenJDK 64-Bit Server VM 18.9 (build 11.0.6+10, mixed mode, sharing)
>> I saw a crash. I had MXBean window of JMC itself and a flight recording window of JMC itself (last 5 minutes).
>> #
>> # A fatal error has been detected by the Java Runtime Environment:
>> #
>> #  SIGSEGV (0xb) at pc=0x00007f5daa42de54, pid=11529, tid=11547
>> #
>> # JRE version: OpenJDK Runtime Environment (11.0.6+10) (build 11.0.6+10)
>> # Java VM: OpenJDK 64-Bit Server VM (11.0.6+10, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
>> # Problematic frame:
>> # C  [libpthread.so.0+0xfe54]  pthread_getcpuclockid+0x4
>> 
>> I'm reporting this early here; maybe it's unrelated to updating to 2020-03. I'm going to investigate further, try to
>> reproduce and open an issue.
>
>> I saw a crash. I had MXBean window of JMC itself and a flight recording window of JMC itself (last 5 minutes).
> 
> I've had this happen a handful of times for me too; with both OpenJDK11 and OpenJDK8 w/JFR (I'm on Fedora 31 fwiw). I
> can't recall seeing this with previous Eclipse versions when using the same JDKs.
> At first I thought the crash was tied to something (it errored when I zoomed into a graph), but the later crashes
> happened when idle.. usually in the span of 2 to 5 minutes. Nice find.

Interesting. Have you only seen these on Linux?

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PR: https://git.openjdk.java.net/jmc/pull/69