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This bug has been copied from bug #701951 and has been proposed
to be backported to 6.0 z-stream (EUS).

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-2011-1106.html

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    New Contents:
A kernel panic in the mpt2sas driver could occur on an IBM system using a
drive with SMART (Self-Monitoring, Analysis and Reporting Technology)
issues. This was because the driver was sending an SEP request while the
kernel was in the interrupt context, causing the driver to enter the sleep
state. With this update, a fake event is now executed from the interrupt
context, assuring the SEP request is properly issued.