[Bug 41732] New: Kernel bug: null pointer dereference in nouveau_i2c_init

[Bug 41732] New: Kernel bug: null pointer dereference in nouveau_i2c_init

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=41732

           Summary: Kernel bug: null pointer dereference in
                    nouveau_i2c_init
           Product: xorg
           Version: unspecified
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: pdewacht-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Created an attachment (id=52275)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=52275)
dmesg output

This is from an Asus X5QS laptop with Geforce GT 555M graphics. During boot
this  error is printed on the console and it hangs when starting X.

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[Bug 41732] Kernel bug: null pointer dereference in nouveau_i2c_init

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=41732

--- Comment #1 from Ben Skeggs <skeggsb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2011-10-12 16:07:03 PDT ---
The kernel oops should be fixed already in nouveau git, there is some
unanswered questions about the issue that caused it to be revealed in the first
place though.

Are you by any chance able to do a mmiotrace[1] of the NVIDIA binary driver for 
me?

[1] http://nouveau.freedesktop.org/wiki/MmioTrace

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[Bug 41732] Kernel bug: null pointer dereference in nouveau_i2c_init

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=41732

--- Comment #2 from Peter De Wachter <pdewacht-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2011-10-15 08:07:19 PDT ---
I was able to experiment a bit more today (it's not my own laptop). It looks
like it's an Optimus system and I can't get the nvidia drivers to work:

[   230.704] (--) NVIDIA(0): Connected display device(s) on GeForce GT 555M at
PCI:1:0:0
[   230.704] (--) NVIDIA(0):     none
[   230.708] (EE) NVIDIA(0): No display devices found for this X screen.

Still, I made the mmiotrace of the X server trying to start. If there's
anything else I can try, please ask.

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[Bug 41732] Kernel bug: null pointer dereference in nouveau_i2c_init

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=41732

--- Comment #3 from Peter De Wachter <pdewacht-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2011-10-15 08:11:36 PDT ---
Created an attachment (id=52365)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=52365)
nvidia binary driver mmiotrace

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[Bug 41732] Kernel bug: null pointer dereference in nouveau_i2c_init

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=41732

--- Comment #4 from Peter De Wachter <pdewacht-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2011-10-15 08:12:08 PDT ---
Created an attachment (id=52366)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=52366)
nvidia binary driver xorg.log

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[Bug 41732] Kernel bug: null pointer dereference in nouveau_i2c_init

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https://bugs.freedesktop.org/show_bug.cgi?id=41732

Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> changed:

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

--- Comment #5 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
It appears that this bug report has laid dormant for quite a while. Sorry we
haven't gotten to it. Since we fix bugs all the time, chances are pretty good
that your issue has been fixed with the latest software. Please give it a shot.
(Linux kernel 3.10.7, xf86-video-nouveau 1.0.9, mesa 9.1.6, or their git
versions.) If upgrading to the latest isn't an option for you, your distro's
bugzilla is probably the right destination for your bug report.

In an effort to clean up our bug list, we're pre-emptively closing all bugs
that haven't seen updates since 2011. If the original issue remains, please
make sure to provide fresh info, see http://nouveau.freedesktop.org/wiki/Bugs/
for what we need to see, and re-open this one.

Thanks,

The Nouveau Team

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