Red Hat Bugzilla – Bug 462117
[QLogic 5.3 bug] qla2xxx - Additional residual-count corrections during UNDERRUN handling.
Last modified: 2009-06-20 01:26:34 EDT
This is a back port of a patch currently being submitted upstream.
It is a very simple 3 line fix to a problem reported by a major OEM.
This is been verified both via FW simulation of the FCP_RSP packet as
well as tested within the lab with a FC-jammer. It was also verified to fix
the original problem reported.
Add additional tightening of residual-count handling (originally
from commit 6acf8190025e9c4ea513d4084ff089d476112816) where the
driver should discard any lower SCSI-status during
firmware/transport residual-count mismatches.
Created attachment 316616 [details]
data underrun correction
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
You can download this test kernel from http://people.redhat.com/dzickus/el5
Patch verified in 2.6.18-123.el5.
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.