Re: [libvirt] Libvir JNA report SIGSEGV

6 Sep 2012


      Hi,
  Actually I also did another test as following. When I comment the "new Connet", the program works well. So this is the problem related to
Libvirt JNA. If I manually run the garbage collection for this program, it still works well. But if I run the garbage collection for the last problem,
It will crash. I guess this problem is caused by ConnectAuth callback. When garbage collection is executed, the callback memory is moved.

B.R.
Benjamin Wang
...
public static void testcase1() throws LibvirtException
    {         
        while(true)
        {
        	int[] array = new int[100000000];
try
        	{
        		Thread.sleep(1000);
        	}
        	catch(Exception e){}
        }
    }
-----Original Message-----
From: Daniel Veillard [mailto:veillard@redhat.com] 
Sent: 2012年9月6日 16:53
To: Benjamin Wang (gendwang)
Cc: libvir-list@redhat.com
Subject: Re: [libvirt] Libvir JNA report SIGSEGV

On Thu, Sep 06, 2012 at 07:53:24AM +0000, Benjamin Wang (gendwang) wrote:
...
Hi,
   The problem only occurs in JNA part. The pure c libvirt works well.  
Even If I only create a connection outside of the loop, the problem 
can still happen. The following is the easiest problem to reproduce 
this problem
public static void testcase1() throws LibvirtException
    {
        Connect conn=null;
//connect to the hypervisor
        conn = new 
Connect("esx://10.74.125.69:443/?no_verify=1&transport=https", new 
ConnectAuthDefault(), 0);
while(true)
        {
        	int[] array = new int[100000000];
try
        	{
        		Thread.sleep(1000);
        	}
        	catch(Exception e){}
        }
    }
Then it's a java bug. The loop doesn't call or use libvirt in any way.
If it crashes in the loop it's java crashing to me !

Daniel

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