Nouveau - Aug 2017 - [Bug 102135] New: WARN_ON hit when loading G71 with v4.13-rc3

https://bugs.freedesktop.org/show_bug.cgi?id=102135

            Bug ID: 102135
           Summary: WARN_ON hit when loading G71 with v4.13-rc3
           Product: xorg
           Version: unspecified
          Hardware: PowerPC
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: aperez at alexperez.com
        QA Contact: xorg-team at lists.x.org

Created attachment 133417
  --> https://bugs.freedesktop.org/attachment.cgi?id=133417&action=edit
dmesg on linux-4.13-rc4 ppc64

Filing at the request of Ilia Mirkin

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Alex Perez <aperez at alexperez.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|WARN_ON hit when loading    |WARN_ON hit when loading
                   |G71 with v4.13-rc3          |G71 with v4.13-rc4

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--- Comment #1 from Alex Perez <aperez at alexperez.com> ---
Created attachment 133418
  --> https://bugs.freedesktop.org/attachment.cgi?id=133418&action=edit
attached G71 vbios from this board.

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https://bugs.freedesktop.org/show_bug.cgi?id=102135

--- Comment #2 from Ilia Mirkin <imirkin at alum.mit.edu> ---
The issue at hand being the multiple

WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c:180
.nvkm_outp_init+0x170/0x2d0

which happen inside nvkm_disp_init. According to Alex, the board works fine
(except for MSI being broken, but that's unrelated).

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--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Should be fixed by:

https://github.com/skeggsb/nouveau/commit/33d8409a5cd51f347ab3f5b848b82b331ac7e279

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Ben Crocker <bcrocker at redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #4 from Ben Crocker <bcrocker at redhat.com> ---
I note that, according to the dmesg output, this is PPC64 big-endian.
Can you provide other hardware specifics?

I see that Ben Skeggs' commit is in the kernel repo as
commit 372aa73e20197d463fc8b34524c20b089a98b1c3;
is anyone equipped to test the fix?

Can we close this as RESOLVED/FIXED?

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Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |MOVED

--- Comment #5 from Martin Peres <martin.peres at free.fr> ---
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