[libvirt] [libvirt-users] JVM crashes during GC

[Michal Prívozník]

On 4/17/19 10:24 AM, Sachin Soman wrote:
> Hi,
> 
> Could you tell me if the following is some known issue?
> 
> While performing the following simple test, I see my JVM crashing
> (consistently):
> 1. Open a connection to an ESXi driver/host (passing ConnectAuthDefault
> instance).
> 2. Close the connection.
> 3. Invoke GC
> 
> When GC is triggered, at some point, some unallocated native memory is
> being tried to release. That's failing.
> 
> The error thrown is:
> 
> java(78745,0x70000241e000) malloc: *** error for object 0x7fd5df561390:
> pointer being freed was not allocated
> 
> *** set a breakpoint in malloc_error_break to debug
> 
> 
> Frames from core dump:
> 
>     frame #0: 0x00007fff5b274b66 libsystem_kernel.dylib`__pthread_kill + 10
> 
>     frame #1: 0x00007fff5b43f080 libsystem_pthread.dylib`pthread_kill + 333
> 
>     frame #2: 0x00007fff5b1d01ae libsystem_c.dylib`abort + 127
> 
>     frame #3: 0x00007fff5b2ce8a6 libsystem_malloc.dylib`free + 521
> 
>     frame #4: 0x00000001127f43a7
> 
>     frame #5: 0x00000001127e3ffd
> 
>     frame #6: 0x00000001127e3ffd
> 
>     frame #7: 0x00000001127e3ffd
> 
>     frame #8: 0x00000001127e3ffd
> 
>     frame #9: 0x00000001127e4042
> 
>     frame #10: 0x00000001127e3ffd
> 
>     frame #11: 0x00000001127e3ffd
> 
>     frame #12: 0x00000001127dc4e7
> 
>     frame #13: 0x000000010c0e235e
> libjvm.dylib`JavaCalls::call_helper(JavaValue*, methodHandle*,
> JavaCallArguments*, Thread*) + 1710
> 
>     frame #14: 0x000000010c0e2b02
> libjvm.dylib`JavaCalls::call_virtual(JavaValue*, KlassHandle, Symbol*,
> Symbol*, JavaCallArguments*, Thread*) + 356
> 
>     frame #15: 0x000000010c0e2cae
> libjvm.dylib`JavaCalls::call_virtual(JavaValue*, Handle, KlassHandle,
> Symbol*, Symbol*, Thread*) + 74
> 
>     frame #16: 0x000000010c1208ee libjvm.dylib`thread_entry(JavaThread*,
> Thread*) + 124
> 
>     frame #17: 0x000000010c33e84d
> libjvm.dylib`JavaThread::thread_main_inner() + 155
> 
>     frame #18: 0x000000010c33ff12 libjvm.dylib`JavaThread::run() + 448
> 
>     frame #19: 0x000000010c26058a libjvm.dylib`java_start(Thread*) + 246
> 
>     frame #20: 0x00007fff5b43c661 libsystem_pthread.dylib`_pthread_body +
> 340
> 
>     frame #21: 0x00007fff5b43c50d libsystem_pthread.dylib`_pthread_start +
> 377
> 
>     frame #22: 0x00007fff5b43bbf9 libsystem_pthread.dylib`thread_start + 13
> 
> 
> I have installed Libvirt 5.2.0.
> Java bindings libvirt-java 0.5.1
> JNA 4.0.0
> Tested Java environments: Oracle Java 8 and OpenJDK 8 on MAC, OpenJDK 11 on
> Ubuntu 16

The backtrace does not suggest it's libvirt related, but I wouldn't be
surprised if our Java bindings mangled memory somewhere. They are
heavily unmaintained.

Regrets,
Michal