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diff agent/src/share/classes/sun/jvm/hotspot/debugger/linux/x86/LinuxX86CFrame.java @ 8672:651919d134f7

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7178741: SA: jstack -m produce UnalignedAddressException in output (Linux) Reviewed-by: poonam, sla
author kevinw
date Wed, 27 Feb 2013 22:40:14 +0000
parents b87e5a681416
children de6a9e811145
line wrap: on
line diff
--- a/agent/src/share/classes/sun/jvm/hotspot/debugger/linux/x86/LinuxX86CFrame.java	Wed Feb 27 16:40:30 2013 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/debugger/linux/x86/LinuxX86CFrame.java	Wed Feb 27 22:40:14 2013 +0000
@@ -61,8 +61,13 @@
         return null;
       }
 
+      // Check alignment of ebp
+      if ( dbg.getAddressValue(ebp) % ADDRESS_SIZE != 0) {
+        return null;
+      }
+
       Address nextEBP = ebp.getAddressAt( 0 * ADDRESS_SIZE);
-      if (nextEBP == null) {
+      if (nextEBP == null || nextEBP.lessThanOrEqual(ebp)) {
         return null;
       }
       Address nextPC  = ebp.getAddressAt( 1 * ADDRESS_SIZE);