Bug 801542

Summary:	Kernel panic happens with AMD Southern Islands graphics
Product:	Red Hat Enterprise Linux 6	Reporter:	jammy.zhou
Component:	kernel	Assignee:	Jaroslav Kysela <jkysela>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	6.4	CC:	jammy.zhou, jshortt, maurizio.antillon
Target Milestone:	rc	Keywords:	Reopened
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-10-04 18:32:05 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 jammy.zhou 2012-03-08 18:52:07 UTC

Description of problem:
With AMD Southern Islands graphics card, kernel panic happens randomly with high frequency

Version-Release number of selected component (if applicable):


How reproducible:
Frequently

Steps to Reproduce:
1. Install fresh RHEL 6.2 OS with old graphics card
2. Replace the graphics card with latest Southern Island graphics card
3. Boot the system
  
Actual results:
The 3 popular scenarios during attempt to boot OS (at terminal, before start X):
1. Hangs at "Waiting for 2 sda-like device(s)"
2. Hangs with a lot of errors, such as "[<ffffff8100b0f2>] ? system)call_fastpath...."
3. Hangs with error message "Cut-off screen here" with corruption of RedHat 6.2 on the background.

Expected results:
The system should boot successfully without problem

Additional info:
After some investigation, the problem is related to the ALSA driver support for Southern Islands HDMI. And after upgrade the ALSA driver from 1.0.21 to 1.0.25, the problem disappears

Comment 2 RHEL Program Management 2012-05-03 05:29:42 UTC

Since RHEL 6.3 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.

Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.

Comment 3 Jaroslav Kysela 2012-09-13 15:47:53 UTC

I believe that this issue is resolved in RHEL 6.3.

Comment 4 jammy.zhou 2013-03-04 07:14:39 UTC

It looks like that the ALSA driver version is still 1.0.21 by running "cat /proc/asound/version".

Comment 5 jammy.zhou 2013-03-04 07:26:45 UTC

So does it mean that the ALSA patches (mentioned in comment#7 of https://bugzilla.redhat.com/show_bug.cgi?id=743622) were ported to RHEL 6.3/6.4 without bumping up the ALSA driver version?

Comment 6 John Shortt 2015-10-04 18:32:05 UTC

This is quite old and several minor versions have released with updates.  If you believe this is still a problem and you can revalidate using RHEL6.7, please reopen or submit a new BZ.

Thanks