JDK-6310967 : SA: jstack -m produce failures in output
  • Type: Bug
  • Component: hotspot
  • Sub-Component: svc
  • Affected Version: hs20,6u10,7
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: linux
  • CPU: generic,x86
  • Submitted: 2005-08-15
  • Updated: 2018-07-23
  • Resolved: 2012-07-03
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Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

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JDK 6 JDK 7 JDK 8 Other
6u33Fixed 7u40Fixed 8Fixed hs23.2Fixed
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Description
running jstack -m on netbeans 4.1 produce some errorneous output like:

0xffffe410      ????????
0x39619728      ????????
sun.jvm.hotspot.debugger.UnalignedAddressException: Trying to read at address: 0x43215272 with alignment: 4
        at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal$1.checkAlignment(LinuxDebuggerLocal.java:163)
        at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readCInteger(LinuxDebuggerLocal.java:451)
        at sun.jvm.hotspot.debugger.DebuggerBase.readAddressValue(DebuggerBase.java:425)
        at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.readAddress(LinuxDebuggerLocal.java:405)
        at sun.jvm.hotspot.debugger.linux.LinuxAddress.getAddressAt(LinuxAddress.java:56)
        at sun.jvm.hotspot.debugger.linux.x86.LinuxX86CFrame.sender(LinuxX86CFrame.java:43)
        at sun.jvm.hotspot.tools.PStack.run(PStack.java:129)
        at sun.jvm.hotspot.tools.JStack.run(JStack.java:41)
        at sun.jvm.hotspot.tools.Tool.start(Tool.java:204)
        at sun.jvm.hotspot.tools.JStack.main(JStack.java:58)

Comments
EVALUATION http://hg.openjdk.java.net/lambda/lambda/hotspot/rev/b87e5a681416
29-06-2012

EVALUATION Moving JPRT update to hs23.2 subcr.
19-06-2012

EVALUATION http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/b87e5a681416
15-06-2012

EVALUATION Since more investigation is needed, changed state back to "accepted".
13-01-2011

EVALUATION Stack walking may not work if the frames are not in walkable state. This might be the case here. But we need to investigate this more.
12-04-2006