Java agent goes unresponsive on solaris 8

Hi all,
Sorry that I am posting here.But this bug has been on me for two weeks.
I have an agent on Solaris. It goes unresponsive after a JNI call. I mean I use JNI in that class, which makes a callback to the Java program.The whole agent goes down when I create a java object in the callback method.This is happenning on some solaris 8 machines.I do see it as patch issue.Couls any one suggest a patch regardig this?
The problem where my agent goes unresponsive is explained below...
I get a sigsegv in realloc. The line of the code that I use contains a call to create a new object like
MyClass a = new MyClass().
The pstack trace is shown as below
--- called from signal handler with signal 11 (SIGSEGV) ---
ff2423ac realfree (4e5eada4, ff2c2858, ff2bc008, c, 4e4f574f, f5660) + 70
ff242c1c freeunlocked (ff2c27cc, ff2bc008, 1c40d8, ff2bc008, 29, 201b40) + a0
ff242b6c free (1c40d8, 0, f5660, ff03f438, 1, 0) + 20
ff03f438 ???????? (f0e7e004, 0, 0, ff0371f8, ffffffff, 0)
ff037200 VerifyClass (a5fb64, 1b343c, f0e7e280, 100, 3a7310, fe09b1e0) + 3fc
fe7ce178 VerifyClassCodes (a5fb64, 1b343c, f0e7e280, 100, fe3e411a, 0) + 10
fe0b8c60 __1cIVerifierRverify_byte_codes6FnTinstanceKlassHandle_pnGThread__v_ (0, fe40fad0, fe41a080, fe40f9bc, fe0a0fa0, fe0a0fa0) + 3a0
fe0b86f0 __1cNinstanceKlassPlink_class_impl6FnTinstanceKlassHandle_pnGThread__v_ (f0e7e55c, a5fad0, f0e7e4ec, a5fad0, 0, fe0a0fa0) + 45c
fe0c6ec4 __1cNinstanceKlassPinitialize_impl6FnTinstanceKlassHandle_pnGThread__v_ (f0e7e678, a5fad0, f0e7e918, 153bfc, a5fad0, 359284) + 9c
fe0c6de0 __1cNinstanceKlassKinitialize6MpnGThread__v_ (f5d7c7d8, a5fad0, a5fad0, f0e7e400, a5fad0, 359284) + 84
fe0cf1f4 __1cSInterpreterRuntimeE_new6FpnKJavaThread_pnTconstantPoolOopDesc_i_v_ (a5fad0, f5d5b010, 25, 94, f5d5b010, 0) + 314
f9c15af4 ???????? (f19ce4d0, b6, 8, f9c10730, f5808648, f0e7e7a0)
f9c05a44 ???????? (a5fad0, 0, 0, f9c15270, 33f348, f0e7e848)
f9c00118 ???????? (f0e7e938, f0e7eb40, a, f5d63540, f9c0aae0, f0e7ea50)
fe0c7b50 __1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_p nGThread__v_ (f0e7eb38, f0e7e9ec, f0e7ea44, a5fad0, a5fad0, 4468) + 274
fe0dae48 __1cUjni_invoke_nonstatic6FpnHJNIEnv__pnJJavaValue_pnI_jobject_nLJNICallType_pn K_jmethodID_pnSJNI_ArgumentPusher_pnGThread__v_ (1beac4, 0, 153b90, fe40fac0, 1beab8, f0e7eb1c) + 518
On the console I get a message
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0xFF2423AC
Function=[Unknown. Nearest: realloc+0x41C]
Library=/usr/lib//libc.so.1
The jre I use is
java version "1.4.2_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_02-b03)
Java HotSpot(TM) Client VM (build 1.4.2_02-b03, mixed mode)
Could any one suggest an appropriate patch for this?
Thanks in advance

Now I can answer myself - firt install the 32-bit version then install the 64-bit "overlay".
This is not explained on the download page which I find unhelpful.
Regards,
Tim

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