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This bug has been copied from bug #630810 and has been proposed
to be backported to 6.0 z-stream (EUS).

Verified on kernel kernel-2.6.32-71.24.1.el6

steps:
referring to steps in https://bugzilla.redhat.com/show_bug.cgi?id=630810#c23

Actual Results:
After migration ,host works well and no crash occurs

Based on above ,this issue has been fixed already 

Change status to VERIFIED.

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0421.html

    Technical note added. If any revisions are required, please edit the "Technical Notes" field
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    New Contents:
Prior to this update, starting multiple Red Hat Enterprise Linux 5.5 64-bit guests with network adapters based on the 8168c chipset or the 8111c chipset triggered an rtl8169_interrupt hang due to a RxFIFO overflow. With this update, infinite loops in the IRQ (Interrupt Request) handler caused by RxFIFO overflows are prevented and the aforementioned hang no longer occurs.