Bug 240016

Summary: invalid reference count for sata controllers
Product: Red Hat Enterprise Linux 4 Reporter: Sandeep K. Shandilya <sandeep_k_shandilya>
Component: kernelAssignee: Red Hat Kernel Manager <kernel-mgr>
Status: CLOSED DUPLICATE QA Contact: Martin Jenner <mjenner>
Severity: high Docs Contact:
Priority: medium    
Version: 4.5CC: wwlinuxengineering
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-05-24 14:20:23 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:    
Bug Blocks: 246028    
Attachments:
Description Flags
output of lsmod on a Poweredge 830. none

Description Sandeep K. Shandilya 2007-05-14 12:51:53 UTC 
Description of problem:
The reference count of the ata_piix or sata_svw module is incorrect for an
attachment of lsmod.txt.

Version-Release number of selected component (if applicable):
kernel version in 2.6.9-55 4.5.

How reproducible:
always.

Steps to Reproduce:
1. Install linux on a PowerEdge 830 on a scsi/SAS configuration.
2. Add a disk to the ata_piix sata port.
3. modprobe the ata_piix module.
  
Actual results:
The ref count of the ata_piix module is a very high number.

Expected results:
the ref count of the ata_piix module should be zero because there are no files
open on the controller.

Additional info:
I first observed this while trying to root cause bugzilla #238855.
If I make the disk busy by creating a partition and formatting the part and
mount the disk. the reference count becomes zero and I can now remove the module
even if the partition is mounted.
Comment 1 Sandeep K. Shandilya 2007-05-14 12:51:53 UTC 
Created attachment 154643 [details]
output of lsmod on a Poweredge 830.
Comment 2 Bryn M. Reeves 2007-05-24 14:20:23 UTC 

*** This bug has been marked as a duplicate of 241215 ***