JON agent crashes with 32-bit JVM on 64-bit AIX

Current thread
----------------------
    "InventoryManager.discovery-1" J9VMThread:0x32985600, j9thread_t:0x325BF9DC, java/lang/Thread:0xE2D74C68, state:R, prio=5
           (native thread ID:0x5620E9, native priority:0x5, native policy:UNKNOWN)
          Java callstack:
              at org/hyperic/sigar/ProcFd.gather(Native Method)
              at org/hyperic/sigar/ProcFd.fetch(ProcFd.java:30)
              at org/hyperic/sigar/Sigar.getProcFd(Sigar.java:531)
              at sun/reflect/NativeMethodAccessorImpl.invoke0(Native Method)
              at sun/reflect/NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48(Compiled Code))
              at sun/reflect/DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37(Compiled Code))
              at java/lang/reflect/Method.invoke(Method.java:578(Compiled Code))
              at org/rhq/core/system/SigarAccess$SigarAccessHandler.invoke(SigarAccess.java:104)
              at $Proxy33.getProcFd(Bytecode PC:21)
              at org/rhq/core/system/ProcessInfo.update(ProcessInfo.java:166)
              at org/rhq/core/system/ProcessInfo.<init>(ProcessInfo.java:91)
              at org/rhq/core/system/NativeSystemInfo.getAllProcesses(NativeSystemInfo.java:227)
              at org/rhq/core/pc/inventory/AutoDiscoveryExecutor.getProcessInfos(AutoDiscoveryExecutor.java:137)
              at org/rhq/core/pc/inventory/AutoDiscoveryExecutor.call(AutoDiscoveryExecutor.java:103)
              at org/rhq/core/pc/inventory/AutoDiscoveryExecutor.run(AutoDiscoveryExecutor.java:92)
              at java/util/concurrent/Executors$RunnableAdapter.call(Executors.java:453)
              at java/util/concurrent/FutureTask$Sync.innerRunAndReset(FutureTask.java:329)
              at java/util/concurrent/FutureTask.runAndReset(FutureTask.java:162)
              at java/util/concurrent/ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
              at java/util/concurrent/ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)
              at java/util/concurrent/ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)
              at java/util/concurrent/ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
              at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
              at java/lang/Thread.run(Thread.java:736)
          Native callstack:
              Java_org_hyperic_sigar_ProcFd_gather+0x98 (0xD6FA8D3C [libsigar-ppc-aix-5.so+0x1cd3c])
              (0xD541E748 [libj9vm24.so+0x48748])
              (0xD53B8394 [libjvm.so+0x9394])
              Java_sun_reflect_NativeMethodAccessorImpl_invoke0+0x18 (0xD54BD934 [libjava.so+0x16934])
              (0x3065026C)
              (0xD53E2C9C [libj9vm24.so+0xcc9c])
              (0xD546BA18 [libj9prt24.so+0x3a18])
              (0xD53E2BB8 [libj9vm24.so+0xcbb8])
              (0xD54577CC [libj9thr24.so+0x27cc])
              _pthread_body+0x118 (0xD010D784 [libpthreads.a+0x3784])

INFO [main] (rhq.core.pc.inventory.InventoryManager)- Initializing Inventory Manager...
INFO [main] (rhq.core.pc.inventory.InventoryManager)- Loading inventory from data file [data/inventory.dat]...
INFO [main] (rhq.core.pc.inventory.InventoryManager)- Inventory with size [13] initialized from data file in [2738ms]
INFO [main] (rhq.core.pc.inventory.InventoryManager)- Inventory Manager initialized.
INFO [main] (rhq.core.pc.inventory.ResourceFactoryManager)- Initializing
INFO [main] (rhq.core.pc.content.ContentManager)- Initializing Content Manager...
INFO [main] (rhq.core.pc.content.ContentManager)- Initializing scheduled content discovery...
INFO [main] (rhq.core.pc.content.ContentManager)- Content Manager initialized...
INFO [main] (org.rhq.core.pc.PluginContainer)- Plugin Container initialized.
INFO [RHQ Primary Server Switchover Thread] (org.rhq.enterprise.agent.AgentMain)- {PrimaryServerSwitchoverThread.started}The primary server switchover thread has started.
INFO [InventoryManager.discovery-1] (rhq.core.pc.inventory.AutoDiscoveryExecutor)- Executing server discovery scan...