Re: crash in JvmtiExport::post_compiled_method_load

[serguei.spit...@oracle.com]

Hi Nezih, I've filed this bug:   https://bugs.openjdk.java.net/browse/JDK-8202883     crash in the JvmtiExport::post_compiled_method_load Please, feel free to add any details when you have them. They are very important to reproduce the crash. For instance, what GC was used in scenario with this crash? Thank you for reporting the issue! Serguei On 5/8/18 16:51, serguei.spit...@oracle.com wrote: Hi Nezih, Crashing in the JvmtiExport::post_compiled_method_load function does not prove itself that it is a VM issue. And there are mo specific details in the log that help to understand this. Filing a bug with this log is almost useless as it would not help to get to the root cause. Also, there is still a pretty big chance the real problem is in the agent. My advice is to get as more details about this crash as possible. The best you can do is to provide a stand alone test case. Even if the issue is in the agent it will help to figure it out. Thanks, Serguei On 5/8/18 16:38, nezih yigitbasi wrote: Hi Serguei, We don't have a repro unfortunately. We have seen this only once so far in our production environment.  Do you think this can be an agent issue? I thought like if it was an agent issue the stack trace would show it. The stack trace, however, ends in the VM code -- the crash happens in the "JvmtiExport::post_compiled_method_load" method. Thanks, Nezih 2018-05-08 16:34 GMT-07:00 serguei.spit...@oracle.com <serguei.spit...@oracle.com>: Hi Nezih, You error file with log does not help much. Could you, please, reproduce this issue with the debug or fastdebug build? Also, a standalone test case is better to provide to increase chances the issue to be investigated and fixed. In general, a JVMTI agent has to be written very carefully as it can easily cause the VM to crash. So, it makes sense to look at the agent implementation first to make sure it does not do anything wrong. It is what we normally do first and why a test case that demonstrates the problem is needed. Thanks, Serguei On 5/8/18 16:00, nezih yigitbasi wrote: Hi, First of all, sorry for bringing up a crash issue in this dev mailing list, but the crash report submission page (https://bugreport.java.com/bugreport/crash.jsp) doesn't list Java 9 in the release drop down, so I couldn't report it there. We recently got a crash with Java 9.0.1+11 with an interesting stack ending at "JvmtiExport::post_compiled_method_load()" (entire error file is here). A google search didn't end up with much info, so I just wanted to check with this mailing list to see whether anyone has any ideas to investigate this further. Thanks, Nezih