Nouveau - Aug 2009 - [Bug 23445] New: NV46: GPU lockup on VT switch

http://bugs.freedesktop.org/show_bug.cgi?id=23445

           Summary: NV46: GPU lockup on VT switch
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: seventhguardian at gmail.com
         QAContact: xorg-team at lists.x.org


I got these errors on the logs after switching from Xorg to another VT, and
logging in:

(...)
Aug 21 23:39:50 pinguinus login[5571]: ROOT LOGIN  on '/dev/tty1'
Aug 21 23:40:01 pinguinus cron[5579]: (root) CMD (test -x /usr/sbin/run-crons
&& /usr/sbin/run-crons )
Aug 21 23:40:02 pinguinus [   47.488542] nouveau 0000:01:00.0:
PFIFO_CACHE_ERROR - Ch 0/3 Mthd 0x1268 Data 0x00000000
Aug 21 23:40:02 pinguinus [   47.488548] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 21 23:40:02 pinguinus [   47.488555] nouveau 0000:01:00.0:
PFIFO_CACHE_ERROR - Ch 0/2 Mthd 0x0c6c Data 0x00000000
Aug 21 23:40:02 pinguinus [   47.488561] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 21 23:40:02 pinguinus [   47.488587] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 21 23:40:03 pinguinus [   47.730059] nouveau 0000:01:00.0: GPU lockup -
switching to software fbcon
Aug 21 23:40:03 pinguinus [   47.977559] nouveau 0000:01:00.0: GPU lockup -
switching to software fbcon
Aug 21 23:40:03 pinguinus [   48.220945] nouveau 0000:01:00.0: GPU lockup -
switching to software fbcon

The "GPU lockup" message goes on and on, and the terminal is damn
slow. After
trying to change back to the X's VT, the system seemed to hang.
Ctrl+Alt+SysRq
still worked, so I managed to sync disk and reboot:

(...)
Aug 21 23:42:58 pinguinus [  223.124393] nouveau 0000:01:00.0: GPU lockup -
switching to software fbcon
Aug 21 23:42:58 pinguinus [  223.351695] nouveau 0000:01:00.0: GPU lockup -
switching to software fbcon
Aug 21 23:43:03 pinguinus [  228.097813] SysRq : Emergency Sync
Aug 21 23:43:42 pinguinus syslog-ng[5220]: syslog-ng starting up;
version='2.1.4'
(...)


Today I've switched to "all-git" versions of Xorg components, and
it has been a
quite a ride so far :)


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--- Comment #1 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-21 16:04:34 PST ---
Oh, I'm using the nouveau git kernel:

$ uname -r
2.6.31-rc6-g8fa1abd

I've made the git switch before rebooting, so I've never tested this
kernel
with the stable Xorg versions... My mistake. I can switch it to a previous
commit and test, if this bug is not obvious to you.


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--- Comment #2 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-21 16:06:04 PST ---
(In reply to comment #1)
> I've made the git switch before rebooting, so I've never tested
this kernel
I meant this particular commit. I've been using the nouveau git kernel for
quite some time, and updated it yesterday.


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--- Comment #3 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-21 16:08:15 PST ---
(In reply to comment #2)
> (In reply to comment #1)
> > I've made the git switch before rebooting, so I've never
tested this kernel
> I meant this particular commit. I've been using the nouveau git kernel
for
> quite some time, and updated it yesterday.
.. not considering today's update. I need to sleep...


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--- Comment #4 from Maarten Maathuis <madman2003 at gmail.com>  2009-08-21
16:14:24 PST ---
Why do you have 4 channels, normally you have channel 0 for the kernel and
channel 1 for xorg. Have you installed the (unsupported) nv40 gallium driver?


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--- Comment #5 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-21 16:53:47 PST ---
(In reply to comment #4)
> Why do you have 4 channels, normally you have channel 0 for the kernel and
> channel 1 for xorg. Have you installed the (unsupported) nv40 gallium
driver?
Not anymore, but the problem seems to remain, except a bit different:

Aug 22 00:47:44 pinguinus login[5527]: pam_unix(login:session): session opened
for user root by LOGIN(uid=0)
Aug 22 00:47:44 pinguinus login[5569]: ROOT LOGIN  on '/dev/tty2'
Aug 22 00:47:48 pinguinus [   40.444285] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 22 00:47:48 pinguinus [   40.444292] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 22 00:47:48 pinguinus [   40.444298] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000

(...)

Aug 22 00:47:48 pinguinus [   40.445339] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 22 00:47:48 pinguinus [   40.445344] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 22 00:47:48 pinguinus [   40.685178] nouveau 0000:01:00.0: GPU lockup -
switching to software fbcon
Aug 22 00:48:04 pinguinus [   56.864228] SysRq : Emergency Sync
Aug 22 00:48:04 pinguinus [   56.866521] Emergency Sync complete
Aug 22 00:48:16 pinguinus [   68.854374] SysRq : Emergency Sync
Aug 22 00:48:16 pinguinus [   68.854854] Emergency Sync complete
Aug 22 00:48:59 pinguinus syslog-ng[5235]: syslog-ng starting up;
version='2.1.4'


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Renato Caldas <seventhguardian at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|NV46: GPU lockup on VT      |NV46: GPU lockup when
                   |switch                      |logging into fbcon




--- Comment #6 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-22 05:42:24 PST ---
VT switching isn't causing the problem, it only happens after logging in to
the
fb console. Could this be a kernel bug?

My next test will be to disable the automatic X startup, and see if it still
locks up.


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Renato Caldas <seventhguardian at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|NV46: GPU lockup when       |NV46: GPU lockup with gdm
                   |logging into fbcon          |prompt AND logged in fbcon




--- Comment #7 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-22 06:13:47 PST ---
Strangest thing: I can only reproduce this when X is showing the GDM prompt,
not after I'm logged in to X.

So to sum up:
  -> Start X system-wide, and leave it in the GDM prompt
  -> Change VT to a console.

  -> Log in
  OR if already logged in,
  -> run dmesg

Problem shows up.


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--- Comment #8 from Pekka Paalanen <pq at iki.fi>  2009-08-22 06:38:49 PST
---
Can you reproduce the "GPU lockup" message completely without X?

Log in, run some commands that print lots of text, and see if it appears in
dmesg. It would be nice to rule out interference with X.


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--- Comment #9 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-22 08:28:34 PST ---
(In reply to comment #8)
> Can you reproduce the "GPU lockup" message completely without X?
It's not reproducible without X.. I've ran things like "dmesg
&& dmesg && dmesg
&& dmesg && dmesg", played a hi-res movie in mplayer using
"-vo fbdev" and "-vo
caca". Nothing.

I've tried with a "gtkterm" session, and the problem didn't
occur. Then I tried
starting a firefox session, and changed VT while firefox was starting up: full
lock up, SysRq wouldn't even work (I was root, not sure if it matters).

Then I tested a gnome-session as a regular user, and the problem didn't show
up.

So it seems to be related with changing VT in some circumstances. It seems that
its not possible to rule out X after all...


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--- Comment #10 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-22 10:20:13 PST ---
Further testing proves that it may be gfx-workload related:

I've started a firefox-only session via startx, and then switched VT and
issued
dmesg a couple of times. It only crashed while the switching was done in the
middle of a big page render, namely Gmail. Whenever the switching was done when
the page was fully loaded, no lockup.

BTW, what are these PFIFO_INTR for? Who handles them? Could it be that the
handler is uninstalled when switching VT, and the lockups occur when the
interrupt is fired outside of X?


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--- Comment #11 from Maarten Maathuis <madman2003 at gmail.com> 
2009-08-22 10:27:23 PST ---
The interrupt handler isn't uninstalled, we just don't know every
interrupt and
this is one of them.

So this is purely a problem that occurs at/around VT switching?


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--- Comment #12 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-22 10:32:53 PST ---
(In reply to comment #11)
> So this is purely a problem that occurs at/around VT switching?
Yes.

I've also been experiencing lockups with xrandr rotation, but I don't
know if
they're related. I'll check the logs to see if it's the same thing.
Brb.


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--- Comment #13 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-22 10:39:19 PST ---
No, it's not related. There is no actual lockup or similar messages on the
logs, just a black display. I'll submit another report for it.

So it is just VT switching related.


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--- Comment #14 from Renato Caldas <seventhguardian at gmail.com> 
2009-08-28 15:46:23 PST ---
The last kernel commit (b3f15458cb2660f430a68a9134a8427f7838d450) changed the
output a bit:

Aug 28 23:35:31 pinguinus login[5576]: ROOT LOGIN  on '/dev/tty1'
Aug 28 23:35:33 pinguinus [   39.975293] nouveau 0000:01:00.0:
PFIFO_CACHE_ERROR - Ch 0/3 Mthd 0x1430 Data 0x00000000
Aug 28 23:35:33 pinguinus [   39.975305] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 28 23:35:33 pinguinus [   39.975312] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
(...)
Aug 28 23:35:33 pinguinus [   39.975678] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 28 23:35:33 pinguinus [   39.975702] nouveau 0000:01:00.0: AIII,
invalid/inactive channel id 32
Aug 28 23:35:33 pinguinus [   39.975709] nouveau 0000:01:00.0: PGRAPH_ERROR -
nSource: ILLEGAL_MTHD, nStatus: PROTECTION_FAULT
Aug 28 23:35:33 pinguinus [   39.975714] nouveau 0000:01:00.0: PGRAPH_ERROR -
Ch -1/2 Class 0x0000 Mthd 0x0c3c Data 0x00000000:0x00000000
Aug 28 23:35:33 pinguinus [   39.975724] nouveau 0000:01:00.0: AIII,
invalid/inactive channel id 32
Aug 28 23:35:33 pinguinus [   39.975731] nouveau 0000:01:00.0: PGRAPH_ERROR -
nSource: ILLEGAL_MTHD, nStatus: PROTECTION_FAULT
Aug 28 23:35:33 pinguinus [   39.975735] nouveau 0000:01:00.0: PGRAPH_ERROR -
Ch -1/2 Class 0x0000 Mthd 0x0be4 Data 0x00000000:0x00200108
Aug 28 23:35:33 pinguinus [   39.975746] nouveau 0000:01:00.0: AIII,
invalid/inactive channel id 32
(...)
Aug 28 23:35:33 pinguinus [   39.976048] nouveau 0000:01:00.0: AIII,
invalid/inactive channel id 32
Aug 28 23:35:33 pinguinus [   39.976054] nouveau 0000:01:00.0: PGRAPH_ERROR -
nSource: ILLEGAL_MTHD, nStatus: PROTECTION_FAULT
Aug 28 23:35:33 pinguinus [   39.976058] nouveau 0000:01:00.0: PGRAPH_ERROR -
Ch -1/2 Class 0x0000 Mthd 0x0c20 Data 0x00000000:0x00000000
Aug 28 23:35:33 pinguinus [   39.976085] nouveau 0000:01:00.0:
PFIFO_CACHE_ERROR - Ch 0/0 Mthd 0x0c24 Data 0x00000000
Aug 28 23:35:33 pinguinus [   39.976122] nouveau 0000:01:00.0: PFIFO_DMA_PUSHER
- Ch 1
Aug 28 23:35:33 pinguinus [   39.976128] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 28 23:35:33 pinguinus [   39.976156] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 28 23:35:33 pinguinus [   39.976163] nouveau 0000:01:00.0: Unhandled
PFIFO_INTR - 0x00010000
Aug 28 23:35:33 pinguinus [   40.039606] nouveau 0000:01:00.0: GPU lockup -
switching to software fbcon
Aug 28 23:36:07 pinguinus [   74.083930] SysRq : Emergency Sync
Aug 28 23:36:46 pinguinus syslog-ng[5219]: syslog-ng starting up;
version='2.1.4'

And the console didn't slowdown anymore, but that was the purpose :) I'm
not
sure if this output is related to this bug though. It may be a bug with the
software fallbacks... Comments?


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--- Comment #15 from Renato Caldas <seventhguardian at gmail.com> 
2009-09-06 03:21:47 PST ---
Heads up, I can reproduce this in Fedora Rawhide.


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--- Comment #16 from Alexander Trubitsyn <a.trubitsyn at mail.ru> 
2010-03-14 16:26:15 PST ---
Created an attachment (id=34044)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=34044)
dmesg log

1. Install Open Suse 11.2 64-bit, 2. download & install latest kernel
2.6.33-31-desktop.
On every boot in dmesg see GPU lockup message


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--- Comment #17 from Alexander Trubitsyn <a.trubitsyn at mail.ru> 
2010-03-14 16:27:05 PST ---
Created an attachment (id=34045)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=34045)
lsmod log


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--- Comment #18 from Alexander Trubitsyn <a.trubitsyn at mail.ru> 
2010-03-14 16:27:35 PST ---
Created an attachment (id=34046)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=34046)
lspci -vv log


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--- Comment #19 from Alexander Trubitsyn <a.trubitsyn at mail.ru> 
2010-03-14 16:28:01 PST ---
Created an attachment (id=34047)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=34047)
xorg.log


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--- Comment #20 from Marcin Slusarz <marcin.slusarz at gmail.com>
2010-10-13 12:36:04 PDT ---
Can you test current git? I think it's already fixed (2.6.35 might be good
too)

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Marcin Slusarz <marcin.slusarz at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

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