[Bug 109808] ROCm OpenCL segfaults on drm-next-5.1-wip

[Bug 109808] ROCm OpenCL segfaults on drm-next-5.1-wip

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=109808

            Bug ID: 109808
           Summary: ROCm OpenCL segfaults on drm-next-5.1-wip
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: bmilreu@gmail.com

rocm clinfo segfaults with this on dmesg:

mar 01 15:27:36 mjb kernel: kfd2kgd: init_user_pages: Failed to register MMU
notifier: -19


Reverting: 
        drm/amdgpu: use HMM callback to replace mmu notifier
        drm/amdgpu: replace get_user_pages with HMM mirror helpers
        drm/amdkfd: avoid HMM change cause circular lock
        drm/amdgpu: use HMM callback to replace mmu notifier

makes it work again, something might be wrong with those related commits.

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[Bug 109808] ROCm OpenCL segfaults on drm-next-5.1-wip

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=109808

--- Comment #1 from Philip Yang <philip.yang@amd.com> ---
Error code -19 means NODEV, please check if the running kernel enables the
kernel config option CONFIG_ZONE_DEVICE (read kernel config from file
/proc/config.gz).

init_user_pages return -NODEV if userptr support is not enabled, userptr
support depends on kernel option CONFIG_HMM_MIRROR/CONFIG_HMM, which depends on
kernel option CONFIG_ZONE_DEVICE.

CONFIG_ZONE_DEVICE, CONFIG_HMM is by default ON, but kernel config file may not
select to set CONFIG_ZONE_DEVICE if the kernel config file is from old kernel.

If userptr support is not enabled, then clinfo and KFD usreptr support will
return error -19.

Please correct kernel config file by adding CONFIG_ZONE_DEVICE=y

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[Bug 109808] ROCm OpenCL segfaults on drm-next-5.1-wip

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=109808

bmilreu@gmail.com changed:

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

--- Comment #2 from bmilreu@gmail.com ---
Thanks for the answer, it was indeed a previous outdated config. Tested with
CONFIG_ZONE_DEVICE=y and issue is gone, closing this.

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Re: [Bug 109808] ROCm OpenCL segfaults on drm-next-5.1-wip

[Mihai]

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Hi Philip,
I was wondering. Is it possible so that the message would be either more
descriptive so that user is informed about this or the kernel config to be
modified to automatically satisfy dependencies?

On Sun, Mar 3, 2019 at 10:36 PM <bugzilla-daemon@freedesktop.org> wrote:

> bmilreu@gmail.com changed bug 109808
> <https://bugs.freedesktop.org/show_bug.cgi?id=109808>
> What Removed Added
> Resolution --- NOTABUG
> Status NEW RESOLVED
>
> *Comment # 2 <https://bugs.freedesktop.org/show_bug.cgi?id=109808#c2> on
> bug 109808 <https://bugs.freedesktop.org/show_bug.cgi?id=109808> from
> bmilreu@gmail.com <bmilreu@gmail.com> *
>
> Thanks for the answer, it was indeed a previous outdated config. Tested with
> CONFIG_ZONE_DEVICE=y and issue is gone, closing this.
>
> ------------------------------
> You are receiving this mail because:
>
>    - You are the assignee for the bug.
>
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> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

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[Bug 109808] ROCm OpenCL segfaults on drm-next-5.1-wip

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=109808

--- Comment #3 from Michael Eagle <xanto@egaming.ro> ---
Hi Philip,
I was wondering. Is it possible so that the message would be either more
descriptive so that user is informed about this or the kernel config to be
modified to automatically satisfy dependencies?

On Sun, Mar 3, 2019 at 10:36 PM <bugzilla-daemon@freedesktop.org> wrote:

> bmilreu@gmail.com changed bug 109808
> <https://bugs.freedesktop.org/show_bug.cgi?id=109808>
> What Removed Added
> Resolution --- NOTABUG
> Status NEW RESOLVED
>
> *Comment # 2 <https://bugs.freedesktop.org/show_bug.cgi?id=109808#c2> on
> bug 109808 <https://bugs.freedesktop.org/show_bug.cgi?id=109808> from
> bmilreu@gmail.com <bmilreu@gmail.com> *
>
> Thanks for the answer, it was indeed a previous outdated config. Tested with
> CONFIG_ZONE_DEVICE=y and issue is gone, closing this.
>
> ------------------------------
> You are receiving this mail because:
>
>    - You are the assignee for the bug.
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

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[Bug 109808] ROCm OpenCL segfaults on drm-next-5.1-wip

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=109808

--- Comment #4 from Philip Yang <philip.yang@amd.com> ---
I will change the error message for this specific case to mention the missing
kernel config option.

I cannot add select ZONE_DEVICE in driver Kconfig file because there will be a
circular dependency issue. The old or wired kernel config file may select to
don't enable HMM or ZONE_DEVICE.

Thanks,
Philip

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