Re: 6.7/regression/KASAN: null-ptr-deref in amdgpu_ras_reset_error_count+0x2d6

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On Mon, Nov 6, 2023 at 8:29 PM Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
>
> Already fixed in this commit:
> https://gitlab.freedesktop.org/agd5f/linux/-/commit/d1d4c0b7b65b7fab2bc6f97af9e823b1c42ccdb0
> Which is in included in last weeks PR.
>

Thanks, it fixed the issue above.
But, unfortunately this is not the only problem which I see on my laptop.
Now I am observing 100% GPU loading all the time.
And it looks as I show on this screenshot: https://postimg.cc/QHLQncMg

And another bisect round says that this commit is blame:
❯ git bisect good
de59b69932e64d77445d973a101d81d6e7e670c6 is the first bad commit
commit de59b69932e64d77445d973a101d81d6e7e670c6
Author: Alex Deucher <alexander.deucher@xxxxxxx>
Date:   Wed Sep 20 13:27:58 2023 -0400

    drm/amdgpu/gmc: set a default disable value for AGP

    To disable AGP, the start needs to be set to a higher
    value than the end.  Set a default disable value for
    the AGP aperture and allow the IP specific GMC code
    to enable it selectively be calling amdgpu_gmc_agp_location().

    Reviewed-by: Christian König <christian.koenig@xxxxxxx>
    Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>

 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c           | 27 ++++++++++++++++-------
 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h           |  2 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c        |  3 +++
 drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c            |  3 ++-
 drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c            |  3 ++-
 drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c             |  4 ++--
 drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c             |  4 ++--
 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c             |  4 ++--
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c             |  3 ++-
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |  2 +-
 10 files changed, 37 insertions(+), 18 deletions(-)

I checked twice and ensure that it not happens on commit
29495d81457a483c2859ccde59cc063034bfe47d

-- 
Best Regards,
Mike Gavrilov.




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