[Bug 211161] New: list_del corruption in ttm_pool_shrink

[Bug 211161] New: list_del corruption in ttm_pool_shrink

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211161

            Bug ID: 211161
           Summary: list_del corruption in ttm_pool_shrink
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.11.0-rc3
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: benjiwiebe14@gmail.com
        Regression: No

Created attachment 294611
  --> https://bugzilla.kernel.org/attachment.cgi?id=294611&action=edit
kernel BUG dmesg 1

I've been getting occasional graphics lockups, fixable only by reboot. I was
hard rebooting until I realized I could ssh in to my desktop still, so here are
two dmesg logs that I've captured. There's also a report of (I think) this same
bug in the LKML: https://lkml.org/lkml/2020/12/31/47

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[Bug 211161] list_del corruption in ttm_pool_shrink

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211161

--- Comment #1 from Benji Wiebe (benjiwiebe14@gmail.com) ---
Created attachment 294613
  --> https://bugzilla.kernel.org/attachment.cgi?id=294613&action=edit
kernel BUG dmesg 2

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[Bug 211161] list_del corruption in ttm_pool_shrink

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211161

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #2 from Alex Deucher (alexdeucher@gmail.com) ---
(In reply to Benji Wiebe from comment #0)
> Created attachment 294611 [details]
> kernel BUG dmesg 1
> 
> I've been getting occasional graphics lockups, fixable only by reboot. I was
> hard rebooting until I realized I could ssh in to my desktop still, so here
> are two dmesg logs that I've captured. There's also a report of (I think)
> this same bug in the LKML: https://lkml.org/lkml/2020/12/31/47

If it's the same issue, it's fixed with these patches:
https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-fixes&id=e0658f970a7f3d85431c6803b7d5169444fb11b0
https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-fixes&id=a73858ef4d5e1d425e171f0f6a52864176a6a979

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[Bug 211161] list_del corruption in ttm_pool_shrink

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211161

--- Comment #3 from Benji Wiebe (benjiwiebe14@gmail.com) ---
(In reply to Alex Deucher from comment #2)

> If it's the same issue, it's fixed with these patches:
> https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-
> fixes&id=e0658f970a7f3d85431c6803b7d5169444fb11b0
> https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-
> fixes&id=a73858ef4d5e1d425e171f0f6a52864176a6a979

OK, thanks. I've sometimes used the whole graphics stack built from source;
I'll do it again, using the latest drm, and see if that fixes it.

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[Bug 211161] list_del corruption in ttm_pool_shrink

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211161

Benji Wiebe (benjiwiebe14@gmail.com) changed:

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

--- Comment #4 from Benji Wiebe (benjiwiebe14@gmail.com) ---
It was happening regularly to me previously, but now using DRM master I haven't
seen it happen once. Looks like you were right about it being fixed in those
patches.

Thanks!

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