Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

For bugs related to Red Hat Enterprise Linux 5 product line. The current stable release is 5.10. For Red Hat Enterprise Linux 6 and above, please visit Red Hat JIRA https://issues.redhat.com/secure/CreateIssue!default.jspa?pid=12332745 to report new issues.

Bug 212344

Summary:	Many unneeded kernel modules are loaded
Product:	Red Hat Enterprise Linux 5	Reporter:	Linda Wang <lwang>
Component:	kernel	Assignee:	Jon Masters <jcm>
Status:	CLOSED NOTABUG	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.0	CC:	dzickus, lwang
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-11-10 11:16:32 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:
Bug Depends On:	211780
Bug Blocks:

Description Linda Wang 2006-10-26 13:49:37 UTC

+++ This bug was initially created as a clone of Bug #211780 +++

Description of problem:
Using kernel-2.6.17-1.2293_FC6, not much overhead was loaded: video button 
battery ac lp parport_pc parport.

But things changed using kernel-2.6.18-1.2798.fc6: button battery asus_acpi ac 
scb2_flash mtdcore cfi_probe chipreg map_funcs pcspkr sbs i2c_ec parport_pc lp 
parport i2c_piix4 i2c_core gen_probe serio_raw video

Why do you believe I need this whole mess automatically loaded? I'm accepting 
video as there is a graphics controller and maybe the ACPI stuff even it doesn't 
make sense at a server, but the rest seems more than nonsens to me. And the box 
has neither parport nor for Linux usable i2c/SMBus or any Asus components. There 
even isn't a sound card or a beeper which could be used for pcspkr. Ha and ever 
seen a 1U rack server supporting any type of CFI-compliant flash chips?

Version-Release number of selected component (if applicable):
kernel-2.6.18-1.2798.fc6

How reproducible:
Buy a HP ProLiant DL360 G3, G4, G4p or G5 and install Fedora Core 6. You'll get 
the same mess installing Red Hat Enterprise Linux 5 when ready and not fixed...

Actual results:
Many unneeded kernel modules are loaded.

Expected results:
Only kernel modules loaded which are really needed and not just every module 
standing or lying around and looking a bit pretty... ;-)

Additional info:
The following also looks strange to me (ehci, ohci and uhci at the same time?):

ehci_hcd               35533  0
ohci_hcd               25181  0
uhci_hcd               27725  0

Comment 2 Jon Masters 2006-11-10 11:16:32 UTC

It looks like this is a case of a newer kernel providing updated drivers
(modalias, new hardware support) that udev then loads automatically on boot. I
don't really see what the bug is here - it's possible to tell the tools not to
load these drivers, if you really want. Unless I'm missing something, this is
not actually a "bug", more a feature that's resulting in some extra modules loaded.