[Bug 196635] New: amdgpu clinfo hangs with SI

[Bug 196635] New: amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

            Bug ID: 196635
           Summary: amdgpu clinfo hangs with SI
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.13-rc4
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: janpieter.sollie@dommel.be
        Regression: No

Created attachment 257863
  --> https://bugzilla.kernel.org/attachment.cgi?id=257863&action=edit
dmesg output

the clinfo command does not work anymore since I tested 4.13-rc4 on my pc.
kernel error message in attachment.
I'm using the amdgpu-pro libraries (not the kernel driver, really only the
libraries) on a dual opteron with a R9 nano and a HD 7700 installed.
I must say I was very happy DPM is working now, but the clinfo calls not
working is a bit of a bummer :(

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #1 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
Created attachment 257865
  --> https://bugzilla.kernel.org/attachment.cgi?id=257865&action=edit
lspci output

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #2 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
Created attachment 257867
  --> https://bugzilla.kernel.org/attachment.cgi?id=257867&action=edit
kernel config

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #3 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
Created attachment 257881
  --> https://bugzilla.kernel.org/attachment.cgi?id=257881&action=edit
working dmesg

dmesg with amdgpu.dpm=0 seems to intitialize the device correctly

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #4 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
Created attachment 257883
  --> https://bugzilla.kernel.org/attachment.cgi?id=257883&action=edit
working clinfo

clinfo output with amdgpu.dpm=0

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

Janpieter Sollie (janpieter.sollie@dommel.be) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugzilla.kernel.org
                   |                            |/show_bug.cgi?id=194899

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #5 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
the system works with dpm=0.  I attached some info about the working system. 
Please note that I DO NOT use the amdgpu-pro kernel module, only its libraries

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #6 from Michel Dänzer (michel@daenzer.net) ---
Can you bisect the kernel?

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #7 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
I'm not a kernel developer, but I am willing to help you where I can. what do
you need from the bisection?

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #8 from Michel Dänzer (michel@daenzer.net) ---
No need to be a developer, just to compile and test a number of kernel Git
commits. Search for "git bisect howto".

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #9 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
I just browsed through a few howtos:
It won't be easy to point to the problem: in 4.10, it hit a triple fault and
then crashed with dpm enabled. do you want a bisection from that one(see
194899) to the current status or do I need to do something else?

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #10 from Michel Dänzer (michel@daenzer.net) ---
(In reply to Janpieter Sollie from comment #9)
> It won't be easy to point to the problem: in 4.10, it hit a triple fault and
> then crashed with dpm enabled. do you want a bisection from that one(see
> 194899) to the current status or do I need to do something else?

Hmm, I guess I misread the bug description as meaning it worked properly
before. If that's not the case, there's probably no point in bisecting.

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

Janpieter Sollie (janpieter.sollie@dommel.be) changed:

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

--- Comment #11 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
the problem SEEMS to be with CIK support and upgrade to rc6 ...
disabling CIK support in my kernel and upgrading it to rc6 solved the problem.
Probably CIK and SI are not really cooperating properly yet.

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #12 from Michel Dänzer (michel@daenzer.net) ---
(In reply to Janpieter Sollie from comment #11)
> disabling CIK support in my kernel and upgrading it to rc6 solved the
> problem.
> Probably CIK and SI are not really cooperating properly yet.

Weird, does rc6 still work with CIK support enabled?

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[Bug 196635] amdgpu clinfo hangs with SI

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=196635

--- Comment #13 from Janpieter Sollie (janpieter.sollie@dommel.be) ---
yes.
But I really think the problem is application-layer:
I do not see any errors in dmesg when running clinfo,
but when I run the application I'm developing, I see the following errors in
dmesg:
[31637.263268] amdgpu 0000:41:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT
domain=0x0014 address=0x00000000ff9f4000 flags=0x0000]
[31637.263379] amdgpu 0000:41:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT
domain=0x0014 address=0x00000000ff9e4000 flags=0x0000]
... and the application hangs
the interesting part here is: to make sure the driver does not "accidentally
work", I added a polaris device to the system.  The amdgpu recognised the
polaris, fiji and SI, but only the SI gives these faults.

do you know how I can figure out whether this is a kernel / midline /
application layer problem?

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