Bug 471849 - [ RHEL 5.3 ]System hangs intermittently during iSCSI HBA configuration with inbox driver.
Summary: [ RHEL 5.3 ]System hangs intermittently during iSCSI HBA configuration with i...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.3
Hardware: All
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Marcus Barrow
QA Contact: Martin Jenner
URL:
Whiteboard:
Depends On:
Blocks: 373081 415811
TreeView+ depends on / blocked
 
Reported: 2008-11-17 06:15 UTC by nandkumar mane
Modified: 2009-06-20 08:09 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-12-09 18:50:39 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
ioctl module with debug enabled (54.04 KB, application/gzip)
2008-11-20 22:31 UTC, David Somayajulu 		no flags Details
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Description nandkumar mane 2008-11-17 06:15:27 UTC 
Description of problem:
On RHEL5U2 machine, I am using inbox iSCSI HBA driver. During iSCSI HBA configuration using iscli, kernel panics intermittently with following error.
RIP  [<ffffffff991307d8>]  :qisioctl:qla4xxx_ioctl+0x249/0x12d5
  RSP <ffff810067509e18>
CR2: 0000000000000068
 <0>Kernel Panic - not syncing: Fatal exception

Version-Release number of selected component (if applicable):
OS : RHEL5U2
iSCSI HBA : QLA4052C
module : qla4xxx  version 5.01.00-k8_rhel5.2-01
iscli version 1.1.00-13

How reproducible:
Intermittent

Steps to Reproduce:
1.Configure HBA using iscli.
2.Add new iscsi target.
3.Save Changes
4.See lun informatin
  
Actual results:
Host panics intermittently.

Expected results:
Host should not panic.

Additional info:
Once host paniced during configuration, after every next reboot host kernel panics.
Comment 1 Marcus Barrow 2008-11-17 16:14:09 UTC 
Can you confirm that you are using rhel 5.2. Do you observe the same behavior
with the latest rhel 5.3 snapshot?

Can you also please include the test from the system log?
Comment 2 nandkumar mane 2008-11-18 03:09:10 UTC 
Yes, I have seen this issue with RHEL5.2 GA and RHEL5.3 Snapshot.
Comment 3 David Somayajulu 2008-11-18 22:06:00 UTC 
Would you mind giving me some more data points.

1. What is the version of the firmware on QLA4052C ?
2. After Step 1. in the 4 steps you mentioned above, what is the target configuration ? I mean can I get a list of targets configured.

3. Also is it possible to test it with a debug version of the ioctl module (qisioctl.ko)(I can provide that).

thanks
david S.
Comment 4 nandkumar mane 2008-11-19 14:29:52 UTC 
BIOS version : 1.14
Firmware version : v3.0.1.49

I saved configuration after configuring 10.72.199.94 and 10.72.199.71 as a target. After saving configuration I was not able to see scsi devices in /proc/scsi/scsi, so I reloaded qla4xxx driver. During driver reload kernel paniced. Now after every reboot system is getting kernel panic.

Yes, Please provide me with debug version of ioctl module.
Comment 5 David Somayajulu 2008-11-20 22:31:38 UTC 
Created attachment 324247 [details]
ioctl module with debug enabled

enclosed is the ioctl module. Please untar it and run ./build.sh to build the ioctl module. Unload the previous ioctl module using "rmmod qisioctl" and install the new one "insmod <path>/qisioctl.ko"
Comment 6 Andrius Benokraitis 2008-12-09 02:52:44 UTC 
Netapp - any status with the suggested ioctl module from David?
Comment 7 nandkumar mane 2008-12-09 12:13:51 UTC 
Sorry for the delay.
After some basic testing, I found that this new qisioctl driver is working fine with R5U3(Snapshot4) inbox driver. I didn't see kernel panic.
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