IV19461: MEMORY CORRUPTION WHEN USING IBM HEALTH CENTER

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: A SIGSEGV/GPF is received when IBM Health Center
    is connected to the JVM and requests a JLM monitor dump.
    .
    Stack Trace: (0x00002B5651230327 <OSB>libc.so.6+0x75327<CSB>)
    (0x00002B5651232A1E <OSB>libc.so.6+0x77a1e<CSB>)
    __libc_malloc+0x77 (0x00002B56512350D7
    <OSB>libc.so.6+0x7a0d7<CSB>)
    (0x00002B565206BAB9 <OSB>libj9prt26.so+0xfab9<CSB>)
    (0x00002B5653EC8EB8 <OSB>libj9jvmti26.so+0x1feb8<CSB>)
    hc_alloc+0x40 (0x00002B59053E20BF
    <OSB>libhealthcenter.so+0x90bf<CSB>)
    monitor_dump_event+0x244 (0x00002B59053DE075
    <OSB>libhealthcenter.so+0x5075<CSB>)
    Java_com_ibm_java_diagnostics_healthcenter_agent_dataproviders_J
    LADataProvider_reportJLA+0x40 (0x00002B59053DDDDE
    <OSB>libhealthcenter.so+0x4dde<CSB>)
    (0x00002B5651CE6C80 <OSB>libj9vm26.so+0x32c80<CSB>)
    .
    

Local fix

Problem summary

  • The problem is caused by creation of a new monitor by the JVM
    while a JLM monitor dump is being performed.
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR1
    6.0.1 SR2
    .
    The JVM has been updated to prevent the memory corruption and
    crash from occurring when performing a JLM monitor dump.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV19461

  • Reported component name

    J9 COMMON CODE

  • Reported component ID

    620700127

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-04-10

  • Closed date

    2012-04-10

  • Last modified date

    2012-04-10

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    J9 COMMON CODE

  • Fixed component ID

    620700127

Applicable component levels

  • R260 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Virtual Machine

Software version:

260

Reference #:

IV19461

Modified date:

2012-04-10

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