Nouveau - Aug 2011 - [Bug 40005] New: strang crash during shutdowns

https://bugs.freedesktop.org/show_bug.cgi?id=40005

           Summary: strang crash during shutdowns
           Product: xorg
           Version: 7.6
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: calestyo at scientia.net
         QAContact: xorg-team at lists.x.org


Hi.

Attached log shows some strange crash that happens usually when I shut down the
system just before poweroff (or reboot).
Seems to be somehow nouveau related?!

Also notice the "[drm:drm_edid_block_valid] *ERROR* EDID checksum is
invalid,
remainder is 34" during boot a bit earlier.


Using:
- Debian sid
- Linux 3.0
- G86 [GeForce 8400M G] (rev a1)


Cheers,
Chris.

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--- Comment #1 from Christoph Anton Mitterer <calestyo at scientia.net>
2011-08-11 05:15:29 PDT ---
Created an attachment (id=50121)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50121)
it's really annoying forcing people to enter a description if it's
already
clear by the name of the file.... will keep people from reporting issues....

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Christoph Anton Mitterer <calestyo at scientia.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|strang crash during         |strange crash during
                   |shutdowns                   |shutdowns

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Christoph Anton Mitterer <calestyo at scientia.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #50121|it's really annoying        |kern.log
        description|forcing people to enter a   |
                   |description if it's already |
                   |clear by the name of the    |
                   |file.... will keep people   |
                   |from reporting issues....   |

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|strange crash during        |kernel crash in
                   |shutdowns                   |nv50_crtc_do_mode_set_base
                   |                            |during shutdown

--- Comment #2 from Marcin Slusarz <marcin.slusarz at gmail.com>
2011-08-11 09:20:23 PDT ---
Line starting with "Code: f0 48" seems to be truncated. Can you
recheck this is
all you got?

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--- Comment #3 from Christoph Anton Mitterer <calestyo at scientia.net>
2011-08-11 10:15:02 PDT ---
I've just checked it... it is complete (well at least nothing more made it
in
the log).

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--- Comment #4 from Emil Velikov <emil.l.velikov at gmail.com> 2011-08-21
14:46:32 PDT ---
Created an attachment (id=50441)
 View: https://bugs.freedesktop.org/attachment.cgi?id=50441
 Review: https://bugs.freedesktop.org/review?bug=40005&attachment=50441

fix

The issue occurs when another monitor has been connected to the card

Upon shutdown, nv50_crtc_do_mode_set_base() tries to use the non-existing FB of
the unplugged crtc, thus causing the BUG

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Emil Velikov <emil.l.velikov at gmail.com> changed:

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

--- Comment #5 from Emil Velikov <emil.l.velikov at gmail.com> 2011-08-26
10:53:05 PDT ---
The patch provided fixes the issue on my system

Christoph if you are still having this issue please reopen the bug and provide
some fresh information

Marking as FIXED

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--- Comment #6 from Florian Mickler <florian at mickler.org> 2011-10-06
05:52:22 PDT ---
A patch referencing this bug report has been merged in Linux v3.1-rc6:

commit ffbc559b0699891c6deb9fd2b4750671eab94999
Author: Emil Velikov <emil.l.velikov at gmail.com>
Date:   Sun Aug 21 22:48:12 2011 +0100

    drm/nv50/crtc: Bail out if FB is not bound to crtc

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