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Bug 601210

Summary:	Fusion MPT misc device (ioctl) driver too verbose in message/fusion/mptctl.c::mptctl_ioctl()
Product:	Red Hat Enterprise MRG	Reporter:	Jon Thomas <jthomas>
Component:	realtime-kernel	Assignee:	Luis Claudio R. Goncalves <lgoncalv>
Status:	CLOSED ERRATA	QA Contact:	David Sommerseth <davids>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	1.2	CC:	bhu, lgoncalv, ovasik, tao, williams
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	surrounded a printk in the fusion mpt driver with debugging ifdefs to reduce irritating console output	Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-08-17 15:54:05 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Jon Thomas 2010-06-07 13:28:49 UTC

Clone of https://bugzilla.redhat.com/show_bug.cgi?id=466441

While running MRG Realtime kernel 2.6.24.7-149.el5rt on a Dell PowerEdge 2950 system, customer see the following messages in dmesg:

<snip>
mptctldrivers/message/fusion/mptctl.c::mptctl_ioctl() @596 - ioc0 not found!
mptctldrivers/message/fusion/mptctl.c::mptctl_ioctl() @596 - ioc1 not found!
[...]
mptctldrivers/message/fusion/mptctl.c::mptctl_ioctl() @596 - ioc30 not found!
mptctldrivers/message/fusion/mptctl.c::mptctl_ioctl() @596 - ioc31 not found!
</snip>

If he runs RHEL 5.5 kernel 2.6.18-194.3.1.el5, no such messages are seen.


* How reproducible: Run MRG Realtime kernel 2.6.24.7-149.el5rt on a Dell PowerEdge 2950 system and check the dmesg.


* Steps to Reproduce: As above.


* Actual results: The above "iocX not found" messages are seen.


* Expected results: No such message should be seen.


* Additional info:

- mptbase module version with RHEL 5.5 (2.6.18-194.el5): 3.04.13rh

As per https://bugzilla.redhat.com/show_bug.cgi?id=466441, the messages seems to be due to verbose debug information and seems to have been fixed on RHEL 5.4. The mptctl.c of kernel 2.6.18-164.el5 shows the following:

<snip>
595                 printk(KERN_DEBUG MYNAM "%s::mptctl_ioctl() @%d - ioc%d not found!\n",
596                                 __FILE__, __LINE__, iocnumX);
</snip>

- mptbase module version with RHEL 5.4 (2.6.18-164.el5): 3.04.07rh

- mptbase module version with RHEL MRG-R (2.6.24.7-149.el5rt): 3.04.06

Comment 1 Luis Claudio R. Goncalves 2010-06-22 12:56:27 UTC

Patch bz601210-Fusion-MPT-misc-dev-driver-too-verbose.patch added to kernel -159 patch queue.

Comment 3 David Sommerseth 2010-07-21 09:30:21 UTC

Verified by code review.  Found bz601210-Fusion-MPT-misc-dev-driver-too-verbose.patch implemented in kernel-rt-2.6.24.7-160.src.rpm.  Double checked that DMPT_DEBUG_IOCTL was not #define'd in the source code or enabled via other debug flags in the kernel config.

Comment 4 Clark Williams 2010-07-26 21:01:58 UTC

Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.

New Contents:
surrounded a printk in the fusion mpt driver with debugging ifdefs to reduce irritating console output

Comment 5 errata-xmlrpc 2010-08-17 15:54:05 UTC

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-2010-0631.html