[Bug 111392] New: [NV110] bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ]

[Bug 111392] New: [NV110] bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ]

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=111392

            Bug ID: 111392
           Summary: [NV110] bus: MMIO read of 00000000 FAULT at 619444 [
                    IBUS ]
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: gius-italy-oA6aJsjdrIk@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 145046
  --> https://bugs.freedesktop.org/attachment.cgi?id=145046&action=edit
Dmesg - Full

Hi, everything looks like working fine on my system but I noticed some error
messages by Nouveau on dmesg. 


[    1.963196] nouveau: detected PR support, will not use DSM
[    1.964517] nouveau 0000:01:00.0: NVIDIA GM107 (1171b0a2)
[    2.009352] nouveau 0000:01:00.0: bios: version 82.07.79.00.1e
[    2.115174] nouveau 0000:01:00.0: fb: 2048 MiB GDDR5
[    2.115188] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 022554
[ IBUS ]
[    2.125653] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 10ac08
[ IBUS ]
[    2.786164] nouveau 0000:01:00.0: DRM: VRAM: 2048 MiB
[    2.786164] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[    2.786167] nouveau 0000:01:00.0: DRM: Pointer to TMDS table invalid
[    2.786167] nouveau 0000:01:00.0: DRM: DCB version 4.0
[    2.786508] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
[    2.786711] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on
minor 1
[   13.593658] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]
[   21.216350] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]
[   31.437080] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]
[ 3506.842157] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]


For read error on addresses 022544 and 10ac08 two bug reports already exists
(bug 100423 and bug 104835).

More info
Notebook model: ASUS N551JW
Kernel version: 5.2.6-200.fc30.x86_64 (Fedora 30)

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[Bug 111392] [NV110] bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ]

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=111392

--- Comment #1 from Giuseppe Lumia <gius-italy-oA6aJsjdrIk@public.gmane.org> ---
I found out something new about the bug. Looks like the read on 0x619444 is
called by the function gm107_gr_init_bios_2 in
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/gpu/drm/nouveau/nvkm/engine/gr/gm107.c?h=v5.2.8#n309. 

I got nvapeek to work on my system ( I had to disable kernel_lockdown since I
was getting "PCI init failure" ) and this is the output:

    ./nvapeek 0x619444
    00619444: badf1301


The curious thing is that if I analyze all the addresses preceding and
following 0x619444 I get only a list of badf1301 and badf1100 (so a "small
error" on the offset is to exclude).

Unfortunately I have no clue what this address 0x619444 refers to and why the
function gm107_gr_init_bios_2 was added to the source code. 

I also found out the commit which added this code:
https://github.com/torvalds/linux/commit/0f78acc86bbfc60cdaffd4eb03e4a35b28397cbb

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[Bug 111392] [NV117] bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ]

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=111392

Giuseppe Lumia <gius-italy-oA6aJsjdrIk@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[NV110] bus: MMIO read of   |[NV117] bus: MMIO read of
                   |00000000 FAULT at 619444 [  |00000000 FAULT at 619444 [
                   |IBUS ]                      |IBUS ]

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[Bug 111392] [NV117] bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ]

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=111392

--- Comment #2 from stf <fixpoint.combinator-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
I am having the same problem, except that my XFCE sometimes freezes.

# cat /var/log/syslog | grep -i nouveau | cut -d' ' -f 7-
[48132.074803] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]
[    5.461491] nouveau: detected PR support, will not use DSM
[    5.463061] nouveau 0000:01:00.0: NVIDIA GM107 (117360a2)
[    5.582620] nouveau 0000:01:00.0: bios: version 82.07.b0.00.11
[    5.850055] nouveau 0000:01:00.0: fb: 4096 MiB GDDR5
[    5.850120] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 022554
[ IBUS ]
[    5.890448] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 10ac08
[ IBUS ]
[    5.949021] nouveau 0000:01:00.0: DRM: VRAM: 4096 MiB
[    5.949024] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[    5.949030] nouveau 0000:01:00.0: DRM: Pointer to TMDS table invalid
[    5.949041] nouveau 0000:01:00.0: DRM: DCB version 4.0
[    5.949901] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
[    5.949923] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on
minor 1
nouveau-pci-0100
[   27.158915] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]
[ 3017.006179] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]

^^^^ This is the last line before the hard restart.

[    4.702574] nouveau: detected PR support, will not use DSM
[    4.704259] nouveau 0000:01:00.0: NVIDIA GM107 (117360a2)
[    4.814736] nouveau 0000:01:00.0: bios: version 82.07.b0.00.11
[    5.225233] nouveau 0000:01:00.0: fb: 4096 MiB GDDR5
[    5.225298] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 022554
[ IBUS ]
[    5.269825] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 10ac08
[ IBUS ]
[    5.328777] nouveau 0000:01:00.0: DRM: VRAM: 4096 MiB
[    5.328779] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[    5.328786] nouveau 0000:01:00.0: DRM: Pointer to TMDS table invalid
[    5.328789] nouveau 0000:01:00.0: DRM: DCB version 4.0
[    5.329569] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
[    5.329589] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on
minor 1
nouveau-pci-0100
[   31.454736] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]
[ 1718.113435] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]
[ 1828.533646] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]
[ 1848.942938] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444
[ IBUS ]

Linux kernel:
4.19.0-5-amd64 #1 SMP Debian 4.19.37-5+deb10u2 (2019-08-08) x86_64 GNU/Linux

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[Bug 111392] [NV117] bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ]

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=111392

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

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

--- Comment #3 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
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