OpenJDK 8 Segfault on Startup

[Aleksey Shipilev]

On 11/28/18 12:34 AM, Attie Grande wrote:
> A fatal log is here:
>     https://pastebin.com/raw/iXTz8v9z
> 
> Output from a crash in gdb (still no symbols):
>     https://pastebin.com/raw/dS8zak5H
> 
> The content of siginfo_t... if it's helpful:
>     https://pastebin.com/raw/hUwZPUUd

Okay, no help.

> PS: Thanks for trying the build on the RPi... that same build works
> fine on my board!
> Do you have any information on "what" was built? (i.e: patches,
> etc...) or is it built from vanilla 191-b12 sources?

Aha, interesting. That build [1] is from Red Hat RPM integration repository [2], which includes
latest upstream 8u, aarch64 port, and Shenandoah GC.

At this point, I have two hypotheses:

 a) Yocto patchset has a bad patch. It is a good thing the my build [1] runs, because it means glibc
is still functional on your board, which means you can probably build without any Yocto patches,
which opens up the opportunity to bisect.

 b) There is a bug/regression in Zero VM that was fixed in later 8u releases. Seeing that you build
8.0_162-b12, and searching through JIRA [3] for the error message, there are a few interesting hits
that have no backports to 8u162 [4][5]. Both might be easy to apply to your current 8u tree [6][7].
(Separately, you can see how the error in interpreter may lead to "surprise" SEGV originating from
Java code). Otherwise, try to update the tree to the latest 8u?

-Aleksey

[1]
https://builds.shipilev.net/openjdk-jdk8-redhat/openjdk-jdk8-redhat-latest-linux-arm32-hflt-zero-fastdebug.tar.xz
[2] http://hg.openjdk.java.net/aarch64-port/jdk8u-shenandoah/
[3] https://bugs.openjdk.java.net/secure/QuickSearch.jspa?searchString=caught+unhandled+signal+11
[4] https://bugs.openjdk.java.net/browse/JDK-8194739
[5] https://bugs.openjdk.java.net/browse/JDK-8202600
[6] http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/8bd024c567e7
[7] http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/ca4663e58916