[Bug 66696] New: Nouveau does DMA to/from unexpected address

[Bug 66696] New: Nouveau does DMA to/from unexpected address

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

          Priority: medium
            Bug ID: 66696
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: Nouveau does DMA to/from unexpected address
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: stijn+bugs-VfPWfsRibaPZj6PxcwrBaQ@public.gmane.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

It appears that on my GeForce 7600 GS (G73), nouveau is doing DMA to/from
unexpected addresses. This gives a lot of warnings, and eventually a system
freeze. This is similar to https://bugs.freedesktop.org/show_bug.cgi?id=27063 /
https://bugzilla.redhat.com/show_bug.cgi?id=561267. This was fixed for nv50 in
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4eb3033c72099fab3536ed8ac54a5dc99f0832d7
but with the G73 I am seeing this problem in a 3.10 kernel.

[    1.499379] [drm] Initialized drm 1.1.0 20060810
[    1.504059] MXM: GUID detected in BIOS
[    1.508111] nouveau  [  DEVICE][0000:01:00.0] BOOT0  : 0x04b200a2
[    1.514207] nouveau  [  DEVICE][0000:01:00.0] Chipset: G73 (NV4B)
[    1.520301] nouveau  [  DEVICE][0000:01:00.0] Family : NV40
[    1.527097] nouveau  [   VBIOS][0000:01:00.0] checking PRAMIN for image...
[    1.575254] nouveau  [   VBIOS][0000:01:00.0] ... appears to be valid
[    1.581696] nouveau  [   VBIOS][0000:01:00.0] using image from PRAMIN
[    1.588216] nouveau  [   VBIOS][0000:01:00.0] BIT signature found
[    1.594305] nouveau  [   VBIOS][0000:01:00.0] version 05.73.22.16.02
[    1.600858] nouveau  [     PFB][0000:01:00.0] RAM type: DDR2
[    1.606516] nouveau  [     PFB][0000:01:00.0] RAM size: 256 MiB
[    1.612436] nouveau  [     PFB][0000:01:00.0]    ZCOMP: 379904 tags
[    1.652901] nouveau  [  PTHERM][0000:01:00.0] FAN control: toggle
[    1.658996] nouveau  [  PTHERM][0000:01:00.0] fan management: disabled
[    1.665521] nouveau  [  PTHERM][0000:01:00.0] internal sensor: yes
[    1.691750] [TTM] Zone  kernel: Available graphics memory: 16478742 kiB
[    1.698366] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
[    1.704892] [TTM] Initializing pool allocator
[    1.709254] [TTM] Initializing DMA pool allocator
[    1.713964] mtrr: type mismatch for 80000000,10000000 old: write-back new:
write-combining
[    1.722226] nouveau  [     DRM] VRAM: 251 MiB
[    1.726584] nouveau  [     DRM] GART: 512 MiB
[    1.730945] nouveau  [     DRM] TMDS table version 1.1
[    1.736082] nouveau W[     DRM] TMDS table script pointers not stubbed
[    1.742608] nouveau  [     DRM] DCB version 3.0
[    1.747143] nouveau  [     DRM] DCB outp 00: 01000300 00000028
[    1.752974] nouveau  [     DRM] DCB outp 01: 03000302 00000000
[    1.758807] nouveau  [     DRM] DCB outp 02: 04011310 00000028
[    1.764641] nouveau  [     DRM] DCB outp 03: 04011312 00c00000
[    1.770471] nouveau  [     DRM] DCB outp 04: 020223f1 0000c080
[    1.776304] nouveau  [     DRM] DCB conn 00: 1030
[    1.781037] nouveau  [     DRM] DCB conn 01: 2130
[    1.785765] nouveau  [     DRM] DCB conn 02: 0210
[    1.790492] nouveau  [     DRM] DCB conn 03: 0211
[    1.795224] nouveau  [     DRM] DCB conn 04: 0213
[    1.801402] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[    1.808018] [drm] No driver support for vblank timestamp query.
[    1.813978] nouveau  [     DRM] 0xD1A1: Parsing digital output script table
[    1.870947] nouveau  [     DRM] 0xD1F1: Parsing digital output script table
[    1.928298] nouveau  [     DRM] 1 available performance level(s)
[    1.934308] nouveau  [     DRM] 0: core 400MHz shader 400MHz memory 400MHz
voltage 1050mV fanspeed 100%
[    1.943694] nouveau  [     DRM] c: core 400MHz shader 400MHz memory 405MHz
fanspeed 100%
[    1.955321] nouveau  [     DRM] MM: using M2MF for buffer copies
[    1.961340] nouveau  [     DRM] Setting dpms mode 3 on TV encoder (output 4)
[    2.060713] nouveau  [     DRM] allocated 1920x1200 fb: 0x9000, bo
ffff8808528bf800
[    2.068437] fbcon: nouveaufb (fb0) is primary device
[    2.078765] nouveau  [     DRM] 0xD1A1: Parsing digital output script table
[    2.139034] nouveau  [     DRM] 0xD1F1: Parsing digital output script table
[    2.189610] dmar: DRHD: handling fault status reg 2
[    2.189612] dmar: DMAR:[DMA Read] Request device [01:00.0] fault addr 0
[    2.189612] DMAR:[fault reason 06] PTE Read access is not set
[    2.190017] dmar: DRHD: handling fault status reg 102
[    2.190019] dmar: DMAR:[DMA Read] Request device [01:00.0] fault addr 0
[    2.190019] DMAR:[fault reason 06] PTE Read access is not set
[    2.190120] Console: switching to colour frame buffer device 240x75
[    2.190254] dmar: DRHD: handling fault status reg 202
[    2.190255] dmar: DMAR:[DMA Read] Request device [01:00.0] fault addr 0
[    2.190255] DMAR:[fault reason 06] PTE Read access is not set
[    2.190672] dmar: DRHD: handling fault status reg 302
[    2.190674] dmar: DMAR:[DMA Read] Request device [01:00.0] fault addr 0
[    2.190674] DMAR:[fault reason 06] PTE Read access is not set
[    2.191081] dmar: DRHD: handling fault status reg 402
[    2.191083] dmar: DMAR:[DMA Read] Request device [01:00.0] fault addr 0
[    2.191083] DMAR:[fault reason 06] PTE Read access is not set
[    2.203182] dmar: DRHD: handling fault status reg 502
[    2.203184] dmar: DMAR:[DMA Read] Request device [01:00.0] fault addr 0
[    2.203184] DMAR:[fault reason 06] PTE Read access is not set
[    2.321167] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device
[    2.327527] nouveau 0000:01:00.0: registered panic notifier
[    2.333109] [drm] Initialized nouveau 1.1.1 20120801 for 0000:01:00.0 on
minor 0


01:00.0 VGA compatible controller [0300]: NVIDIA Corporation G73 [GeForce 7600
GS] [10de:0392] (rev a1) (prog-if 00 [VGA controller])
        Subsystem: Micro-Star International Co., Ltd. NX7600GS-T2D256EH
[1462:0622]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort+ >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 32
        Region 0: Memory at 91000000 (32-bit, non-prefetchable) [size=16M]
        Region 1: Memory at 80000000 (64-bit, prefetchable) [size=256M]
        Region 3: Memory at 90000000 (64-bit, non-prefetchable) [size=16M]
        Region 5: I/O ports at e000 [size=128]
        Expansion ROM at 92000000 [disabled] [size=128K]
        Capabilities: [60] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [78] Express (v1) Endpoint, MSI 00
                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <256ns,
L1 <4us
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset-
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
                        MaxPayload 128 bytes, MaxReadReq 512 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr-
TransPend-
                LnkCap: Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency
L0 <256ns, L1 <4us
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain-
CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
        Capabilities: [100 v1] Virtual Channel
                Caps:   LPEVC=0 RefClk=100ns PATEntryBits=1
                Arb:    Fixed- WRR32- WRR64- WRR128-
                Ctrl:   ArbSelect=Fixed
                Status: InProgress-
                VC0:    Caps:   PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
                        Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
                        Ctrl:   Enable+ ID=0 ArbSelect=Fixed TC/VC=01
                        Status: NegoPending- InProgress-
        Capabilities: [128 v1] Power Budgeting <?>
        Kernel driver in use: nouveau
        Kernel modules: nvidia

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

--- Comment #1 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Looking at that redhat bug report, someone added comments about similar issues
on NV43 a while after it was closed. Since you have a NV4B, I expect that the
issue is the same.

Has this always been happening, or is this a new issue? (Guessing the
former...)

If it's a new issue, doing a kernel bisect would narrow down the commit that
broke things.

If it has always been like that, does this issue occur with the nvidia binary
driver? If not, doing an mmiotrace would be helpful (guide at
https://wiki.ubuntu.com/X/MMIOTracing). The register written to by 4eb3033c
only exists on NV50+ according to envytools.

Are all the errors the same (i.e. trying to read from address 0) or does it
vary?

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

--- Comment #2 from Stijn Tintel <stijn+bugs-VfPWfsRibaPZj6PxcwrBaQ@public.gmane.org> ---
(In reply to comment #1)
> Has this always been happening, or is this a new issue? (Guessing the
> former...)
I can't tell, as I have been using nvidia.ko until now.

> If it has always been like that, does this issue occur with the nvidia
> binary driver? If not, doing an mmiotrace would be helpful (guide at
> https://wiki.ubuntu.com/X/MMIOTracing). The register written to by 4eb3033c
> only exists on NV50+ according to envytools.
It does not occur with nvidia.ko. MMIOTrace output @
http://stewie.be.tintel.eu/mmiotrace.log

> Are all the errors the same (i.e. trying to read from address 0) or does it
> vary?
Grep on /var/log messages shows only address 0.

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

--- Comment #3 from Stijn Tintel <stijn+bugs-VfPWfsRibaPZj6PxcwrBaQ@public.gmane.org> ---
Forgot to actually start X, updated the log @
http://stewie.be.tintel.eu/mmiotrace.log :-)

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

--- Comment #4 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Created attachment 82309
  --> https://bugs.freedesktop.org/attachment.cgi?id=82309&action=edit
Attempt at adding some writes that the blob does

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

--- Comment #5 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Please give this patch a shot. Just saw a few things that stood out in your
mmiotrace, I have no idea what they actually do :) Perhaps totally unrelated.
If it causes new problems, try the new writes individually.

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

--- Comment #6 from Stijn Tintel <stijn+bugs-VfPWfsRibaPZj6PxcwrBaQ@public.gmane.org> ---
After correcting the typos (mv_wr32 -> nv_wr32), I was able to build the
kernel. Unfortunately I still see the same DMAR errors.

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

Tobias Klausmann <tobias.klausmann-AqjdNwhu20eELgA04lAiVw@public.gmane.org> changed:

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

--- Comment #7 from Tobias Klausmann <tobias.klausmann-AqjdNwhu20eELgA04lAiVw@public.gmane.org> ---
Still something actually happening with newer kernels (3.17/3.18)?

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

--- Comment #8 from Stijn Tintel <stijn+bugs-VfPWfsRibaPZj6PxcwrBaQ@public.gmane.org> ---
(In reply to Tobias Klausmann from comment #7)
> Still something actually happening with newer kernels (3.17/3.18)?

Unfortunately the card died so I am unable to test anything.

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[Bug 66696] Nouveau does DMA to/from unexpected address

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https://bugs.freedesktop.org/show_bug.cgi?id=66696

Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed:

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

--- Comment #9 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
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