Bug 640211

Summary:

System freeze: kernel 2.6.36-0.32.rc6.git2.fc15.x86_64

Product:

[Fedora] Fedora

Reporter:

Martin Kho <rh-bugzilla>

Component:

0xFFFF

Assignee:

Ben Skeggs <bskeggs>

Status:

CLOSED RAWHIDE

QA Contact:

Fedora Extras Quality Assurance <extras-qa>

Severity:

medium

Docs Contact:

Priority:

low

Version:

rawhide

CC:

airlied, aquini, bskeggs, dougsland, dwmw2, gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda

Target Milestone:

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Target Release:

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Hardware:

All

OS:

Linux

Whiteboard:

Fixed In Version:

Doc Type:

Bug Fix

Doc Text:

Story Points:

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Clone Of:

Environment:

Last Closed:

2010-11-09 22:07:10 UTC

Type:

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Regression:

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Mount Type:

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Documentation:

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CRM:

Verified Versions:

Category:

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oVirt Team:

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RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

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Target Upstream Version:

Embargoed:

Attachments:

Description	Flags
Excerpt from /var/log/messages	none
dmesg	none

Description Martin Kho 2010-10-05 09:04:03 UTC

Created attachment 451608 [details]
Excerpt from /var/log/messages

Description of problem:
When logging in into KDE (4.5.2-1) my system freezes. Text mode is okay. The crash doesn't happen with previous kernel.

Version-Release number of selected component (if applicable):
kernel-2.6.36-0.32.rc6.git2.fc15.x86_64

How reproducible:


Steps to Reproduce:
1. Boot into rawhide (fc15)
2. Login at the graphical prompt (KDM)
3. crash
  
Actual results:
I get a text dump (see attachment) 

Expected results:
kde starts normal

Additional info:
* I've desktop effects active (XRender)
* Use two monitors (connected to VGA & DVI)
* Smolt profile: http://www.smolts.org/client/show/pub_64b0baaf-1307-4750-a5ca-dac26b4494f3
* The attachment contains messages from the crashing kernel and the previous kernel.

Comment 1 Martin Kho 2010-10-06 16:54:57 UTC

Hi,

Kernel updated to: kernel-2.6.36-0.34.rc6.git3.fc15.x86_64.

Same issue.

Martin Kho

Comment 2 Martin Kho 2010-10-08 17:36:37 UTC

Hi,

Kernel updated to: kernel-2.6.36-0.35.rc7.git0.fc15.x86_64. Issue still exists. Btw. For now I disabled desktop effects. This is a temporary work around.

Martin Kho

Comment 3 Martin Kho 2010-10-13 07:49:50 UTC

Hi,

I picked kernel 2.6.36-0.36.rc7.git3.fc15.x86_64 from koji. Desktop effects with the XRender backend (KDE) are functioning again, thanks. But there are still a bunch of nasty messages in the output of dmesg. I'll attach them, may be nice to have :-)

Martin Kho

Comment 4 Martin Kho 2010-10-13 07:51:36 UTC

Created attachment 453108 [details]
dmesg

Comment 5 Chuck Ebbert 2010-10-23 17:44:17 UTC

[   60.426367] [ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]
[   60.426380] 2.6.36-0.36.rc7.git3.fc15.x86_64 #1
[   60.426389] ------------------------------------------------------
[   60.426401] kwin_opengl_tes/1706 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
[   60.426414]  (&(&mm->unused_lock)->rlock){+.+...}, at: [<ffffffffa0036394>] drm_mm_put_block+0xf6/0x12a [drm]

[   60.426454] and this task is already holding:
[   60.426466]  (&(&dev_priv->context_switch_lock)->rlock){-.....}, at: [<ffffffffa0092502>] nouveau_channel_free+0x11a/0x23e [nouveau]

[   60.426501] which would create a new lock dependency:
[   60.426511]  (&(&dev_priv->context_switch_lock)->rlock){-.....} -> (&(&mm->unused_lock)->rlock){+.+...}

Comment 6 Martin Kho 2010-11-09 11:53:41 UTC

Hi,

For me, the issue is solved after updating to:

* xorg-x11-drv-nouveau-0.0.16-11.20101026git1143e7a.fc15.x86_64.rpm
* libdrm-2.4.23-0.1.20101108.fc15.x86_64.rpm

These will be pushed with the next rawhide update, I suppose.

Thanks for the good work and please close this report.

Martin Kho

Note: There are two harmless (?) messages:
[   63.899519] [drm] nouveau 0000:01:00.0: unknown parameter 15
[   63.899937] [drm] nouveau 0000:01:00.0: unknown parameter 16

Comment 7 Ben Skeggs 2010-11-09 22:07:10 UTC

Thanks for letting me know!  Yeah those messages are harmless, the 2D driver is querying the kernel if it supports certain features that aren't yet in the rawhide kernel.  They'll make it there at some point, but things will work correctly regardless.