Nouveau - Nov 2016 - [Bug 98709] New: [NV50] clocksource: timekeeping watchdog on CPU2: Marking clocksource 'tsc' as unstable because the skew is too large

https://bugs.freedesktop.org/show_bug.cgi?id=98709

            Bug ID: 98709
           Summary: [NV50] clocksource: timekeeping watchdog on CPU2:
                    Marking clocksource 'tsc' as unstable because the
skew
                    is too large
           Product: Mesa
           Version: 12.0
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: thican+freedesktop at thican.net
        QA Contact: nouveau at lists.freedesktop.org

Created attachment 127955
  --> https://bugs.freedesktop.org/attachment.cgi?id=127955&action=edit
dmesg content after the kernel dump.

Hello everyone,

I met an error bricking my graphical session, just after launching a game
(named Hacknet, some irony).
I attached the content of dmesg after the crash.

I am about to do an apitrace of the program.

My GPU is an 8600 GT on a MSI board, I am using kernel 4.7.10-hardened and Mesa
12.0.3. I consider updating the version of Mesa on my system, but it might be
unlikely related.

I can provide more information if you need it.

Thanks for support.

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[NV50] clocksource:         |[NV84] fifo intr 00c00000,
                   |timekeeping watchdog on     |subchan mapping messed up
                   |CPU2: Marking clocksource   |
                   |'tsc' as unstable because   |
                   |the skew is too large       |

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Observation:

subc 3 class 502d

should be impossible. The 2d class is always on subchan 2, for both mesa and
the ddx. Not sure what can cause that sort of thing to happen.

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--- Comment #2 from Thibaud CANALE <thican+freedesktop at thican.net> ---
Hello again,

I managed to get through apitrace a replay which provokes the crash while
replaying it.
But because the files are way too big for the bugtracker (respectively 25MiB
and 859kiB for the trace and its dump both compressed with XZ), I am hosting
those files:
(Note: if you don't have CAcert's root certificate in your store, you
will
encounter a error with HTTPS, accept the warning or remove the S in HTTPS)
https://thican.net/~thican/Hacknet_2016-11-13%2019%3A13%3A47%2B01%3A00.dump.xz
https://thican.net/~thican/Hacknet_2016-11-13%2019%3A13%3A47%2B01%3A00.xz

Hash SHA512:
cb0982861cdbd998e9f42baacf0f5b6cf26766fa2a102edcc12c3411041f7b03545b3df23dd8398ab776fd0c5bf9d150f8afe2f6fdb43fee474cf05e92e68a93
 Hacknet_2016-11-13 19:13:47+01:00.dump.xz
5a76c30adf031680f72c458935807ba83a5ff835e7bcc126a90ba92371e829850f267c37719e7b450a77359cdcda58bad4c900c8e1c0fa8a74a0ae1be3b5a102
 Hacknet_2016-11-13 19:13:47+01:00.xz

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GitLab Migration User <gitlab-migration at fdo.invalid> changed:

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

--- Comment #3 from GitLab Migration User <gitlab-migration at
fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1118.

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