[Bug 87278] Packet0 not allowed and GPU fault detected errors with Serious Engine games - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 87278] Packet0 not allowed and GPU fault detected errors with Serious Engine games
Date: Sat, 13 Dec 2014 10:38:05 +0000	[thread overview]
Message-ID: <bug-87278-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=87278

            Bug ID: 87278
           Summary: Packet0 not allowed and GPU fault detected errors with
                    Serious Engine games
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: daniel@constexpr.org

Created attachment 110808
  --> https://bugs.freedesktop.org/attachment.cgi?id=110808&action=edit
dmesg output with the GPU fault errors filtered out

Running Serious Sam 3 or The Talos Principle spams dmesg with thousands of
these errors:

[ 6001.212237] radeon 0000:01:00.0: GPU fault detected: 147 0x02528801
[ 6001.212243] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x0FF02192
[ 6001.212246] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x12088001
[ 6001.212249] VM fault (0x01, vmid 9) at page 267395474, read from TC (136)

There are also a few "Packet0 not allowed" errors (followed by a hex dump):

[15446.473341] radeon 0000:01:00.0: Packet0 not allowed!

So far it's only these errors in dmesg - I haven't observed any actual
rendering issues, crashes, GPU lockups because of this.

I have only attached a filtered kernel log with the GPU fault errors removed  -
the full log is available at http://constexpr.org/tmp/serious-dmesg.log (140
MiB).

Both of these games use the Serious Engine 3.5 (Serious Sam 3) or 4 (The Talos
Principle). This is also reproducible with The Talos Principle Public Test
which as of now is still available as a free download on Steam.

Kernel: 3.18.0-gentoo
GPU: Radeon HD 7950
Driver: radeonsi, Mesa 10.5.0-devel (git-ff96537)

This might be related to bug 84500 - however those spurious Packet0 have been
gone for a while now with updated Mesa - now I got them again but only while
running Serious Engine games.

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