OpenJDK 8 Segfault on Startup

[Aleksey Shipilev]

On 11/27/18 11:13 PM, Aleksey Shipilev wrote:
> On 11/27/18 10:41 PM, Attie Grande wrote:
>>>> I've attached an error report: hs_err_pid5803.log.
>>>
>>> Attachment was stripped, please put the file somewhere, and post the link?
>>
>> Apologies - see here: https://pastebin.com/raw/f1PB4uJm
> 
> Okay. So you caught the SEGV from the Zero-interpreted Java code. Debugging is going to be fun,
> because you would have to see what the interpreter was doing when the signal hit. You see the
> message from the JVM's signal handler, and there are a few legit cases where SEGV is expected and
> should not break the VM: for example, it could be the NPE from Java code.
> 
> I'd probably also poke around JVM_handle_linux_signal on os_linux_zero.cpp and see if anything goes
> wrong here. For example, there is a suspicious jni_fast_Get<Primitive>Field comment. I also don't
> see the handler for implicit null checks, given ImplicitNullChecks is on for Zero, hm; that probably
> means Zero never actually generates them, so they don't require handling.
> 
> More verbose failure message (what's si_addr, for example?) would help to understand the message
> too. Must be easy to at least feed the unhandled sig to os::print_siginfo.

Then again, this works on RPi 3:

pi at rpi3b-plus-arm32:~ $ curl
https://builds.shipilev.net/openjdk-jdk8-redhat/openjdk-jdk8-redhat-latest-linux-arm32-hflt-zero-fastdebug.tar.xz
| tar xJf -

pi at rpi3b-plus-arm32:~ $ j2sdk-image/bin/java -version
openjdk version "1.8.0-builds.shipilev.net-openjdk-jdk8-redhat-fastdebug"
OpenJDK Runtime Environment (build
1.8.0-builds.shipilev.net-openjdk-jdk8-redhat-fastdebug-b29-20181125-aarch64-shenandoah-jdk8u191-b12)
OpenJDK Zero VM (build 25.71-b29-20181125-aarch64-shenandoah-jdk8u191-12-fastdebug, interpreted mode)

pi at rpi3b-plus-arm32:~ $ j2sdk-image/bin/java Hello
Hello World

-Aleksey