Re: PROBLEM: oops in nouveau driver in 2.6.36-rc*

[Stephane Casset <sept@logidee.com>]

Le Wed, Aug 25, 2010 at 11:41:33AM +1000, Ben Skeggs écrivait :
> On Mon, 2010-08-23 at 17:35 +0200, Stephane Casset wrote:
> > Hi,
> Hi,

Hi,

Thanx for the reply.

> > Since 2.6.36-rc1 I have an oops when loading the nouveau driver.
> > The system woks ok expect for the nouveau driver and the console gets
> > corrupted :(
> > 
> > I attach relevant informations in attached files :
> >  o dmesg output for 2.6.36-rc2-git1
> >  o ksymoops output for the above file
> > 
> > If you need more informations please let me know.
> > If you want me to test patches let me know.
> > If you want me to run a git bissect let me know.
> The reason is known, and fixed in nouveau git.  The patches have been
> sent to Linus to be merged, but I'm not sure if he has yet.
> 
> The relevant commit is "drm/nouveau: fix earlier mistake when fixing
> merge conflict"

Yes I confirm it is merged in 2.6.36-rc2-git2, and I get no more oops
when loading the nouveau driver.

But I get some error message from the driver when in X and the X server
hangs...

Message from dmesg :

Aug 24 20:26:47 flocon kernel: [drm] nouveau 0000:01:00.0: PGRAPH_ERROR
- nSource: ILLEGAL_MTHD, nStatus: PROTECTION_FAULT
Aug 24 20:26:47 flocon kernel: [drm] nouveau 0000:01:00.0: PGRAPH_ERROR
- Ch 1/0 Class 0x0039 Mthd 0x0a88 Data 0x00020000:0x00140282
Aug 24 20:26:47 flocon kernel: [drm] nouveau 0000:01:00.0: PGRAPH_ERROR
- nSource: ILLEGAL_MTHD, nStatus: PROTECTION_FAULT
Aug 24 20:26:47 flocon kernel: [drm] nouveau 0000:01:00.0: PGRAPH_ERROR
- Ch 1/0 Class 0x0039 Mthd 0x0a8c Data 0x00020000:0x00020000
Aug 24 20:26:47 flocon kernel: [drm] nouveau 0000:01:00.0:
PFIFO_CACHE_ERROR - Ch 1/0 Mthd 0x0000 Data 0x0004f808
Aug 24 20:26:47 flocon kernel: [drm] nouveau 0000:01:00.0:
PFIFO_DMA_PUSHER - Ch 1
Aug 24 20:28:41 flocon kernel: [drm] nouveau 0000:01:00.0:
nouveau_channel_free: freeing fifo 1
Aug 24 20:28:44 flocon kernel: [drm] nouveau 0000:01:00.0: Failed to
idle channel 1.
Aug 24 20:28:44 flocon kernel: [drm] nouveau 0000:01:00.0:
nouveau_channel_free: freeing fifo 2

Message in /var/log/Xorg.log:

[mi] EQ overflowing. The server is probably stuck in an infinite loop.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80d91fb]
1: /usr/bin/X (mieqEnqueue+0x1ab) [0x80d7cbb]
2: /usr/bin/X (xf86PostMotionEventP+0xd2) [0x80b8322]
3: /usr/bin/X (xf86PostMotionEvent+0x68) [0x80b84a8]
4: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb6a53000+0x34fb)
[0xb6a564fb]
5: /usr/lib/xorg/modules/input/synaptics_drv.so (0xb6a53000+0x5b3d)
[0xb6a58b3d]
6: /usr/bin/X (0x8048000+0x7307f) [0x80bb07f]
7: /usr/bin/X (0x8048000+0x104994) [0x814c994]
8: (vdso) (__kernel_sigreturn+0x0) [0xffffe400]
9: /usr/lib/libdrm.so.2 (drmCommandWrite+0x3b) [0xb72ea1eb]
10: /usr/lib/libdrm_nouveau.so.1 (0xb7314000+0x2c5a) [0xb7316c5a]
11: /usr/lib/libdrm_nouveau.so.1 (nouveau_bo_map_range+0xf1)
[0xb7316e51]
12: /usr/lib/libdrm_nouveau.so.1 (nouveau_bo_map+0x33) [0xb7316f23]
13: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0xb726c000+0x40ba)
[0xb72700ba]
14: /usr/lib/xorg/modules/libexa.so (0xb723c000+0x7800) [0xb7243800]
15: /usr/bin/X (0x8048000+0x178bff) [0x81c0bff]
16: /usr/bin/X (0x8048000+0xb813c) [0x810013c]
17: /usr/bin/X (0x8048000+0xb4623) [0x80fc623]
18: /usr/bin/X (0x8048000+0x38067) [0x8080067]
19: /usr/bin/X (0x8048000+0x1e92a) [0x806692a]
20: /lib/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0xb741bc76]
21: /usr/bin/X (0x8048000+0x1e511) [0x8066511]
 
This is with X.Org X Server 1.7.7 and
(II) LoadModule: "nouveau"
(II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so
(II) Module nouveau: vendor="X.Org Foundation"
        compiled for 1.7.7, module version = 0.0.16
        Module class: X.Org Video Driver
        ABI class: X.Org Video Driver, version 6.0

The nouveau X module is from the lastest git repo (yesterday)

Same configuration as before...

Any Idea ?

Thanx
-- 
Stéphane Casset            LOGIDÉE sàrl       Se faire plaisir d'apprendre
1a, rue Pasteur        Tel : +33 388 23 69 77           casset@logidee.com
F-67540 OSTWALD        Fax : +33 388 23 69 77           http://logidee.com
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