[Bug 85207] New: agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

[Bug 85207] New: agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

            Bug ID: 85207
           Summary: agd5f drm-next-3.19-wip + Unreal Elemental sometimes =
                    list_add corruption/hung task
           Product: DRI
           Version: XOrg CVS
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: adf.lists@gmail.com

Created attachment 108075
  --> https://bugs.freedesktop.org/attachment.cgi?id=108075&action=edit
dmesg when Unreal Elemental hangs on start

R9270X Sometime running unreal elemental demo it hangs at startup with errors
in dmesg attached.

This doesn't always happen.

Mesa is currently on winsys/radeon: Use a single buffer cache manager again,
previously produced with slightly older.

Haven't seen on drm-next-3.18-wip (but really need to test more with current
mesa)

Possibly unrelated, but new for drm-next-3.19-wip I get below when running
Unigine Valley - it runs OK.

Oct 17 11:15:35 ph4 kernel: radeon 0000:01:00.0: GPU fault detected: 146
0x0af03504
Oct 17 11:15:35 ph4 kernel: radeon 0000:01:00.0:  
VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x00010E57
Oct 17 11:15:35 ph4 kernel: radeon 0000:01:00.0:  
VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x10035004
Oct 17 11:15:35 ph4 kernel: VM fault (0x04, vmid 8) at page 69207, read from
VGT (53)

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #1 from Andy Furniss <adf.lists@gmail.com> ---
Also noticed in that dmesg and searching kern log that I sometimes get
apparently without effect -

kernel: [drm:radeon_gem_va_update_vm] *ERROR* Couldn't update BO_VA (-512)

With this kernel.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #2 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Andy Furniss from comment #0)
> Haven't seen on drm-next-3.18-wip

Can you bisect the kernel?

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #3 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Michel Dänzer from comment #2)
> (In reply to Andy Furniss from comment #0)
> > Haven't seen on drm-next-3.18-wip
> 
> Can you bisect the kernel?

May be a bit early, but I will sit on the one before for a while to confirm.

Looks like the head commit -

commit bb9a49819ed30f3f5782b2504066547a8507a591
Author: Christian König <christian.koenig@amd.com>
Date:   Mon Oct 13 12:41:47 2014 +0200

    drm/radeon: update the VM after setting BO address

    This way the necessary VM update is kicked off immediately
    if all BOs involved are in GPU accessible memory.

I haven't managed to lock or get Valley to GPU fault on the one before so far.

FWIW I noticed even on head the valley fault doesn't always happen - it seems
that I need to have set my CPUs to perf (which I nearly always do when testing
things like this). With cpufreq ondemand I didn't see the fault.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

Christian König <deathsimple@vodafone.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |deathsimple@vodafone.de

--- Comment #4 from Christian König <deathsimple@vodafone.de> ---
Created attachment 108165
  --> https://bugs.freedesktop.org/attachment.cgi?id=108165&action=edit
Possible fix

Ups! Forgotten to take the VM lock in radeon_gem_va_update_vm. Fix is attached.

Thanks for testing,
Christian.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #5 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Christian König from comment #4)
> Created attachment 108165 [details] [review]
> Possible fix
> 
> Ups! Forgotten to take the VM lock in radeon_gem_va_update_vm. Fix is
> attached.
> 
> Thanks for testing,
> Christian.

I don't know about Elemental as it's far harder to trigger, but first try with
valley produced -

[  156.617954] radeon 0000:01:00.0: GPU fault detected: 146 0x02e83504
[  156.617960] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x00010F17
[  156.617961] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x08035004
[  156.617963] VM fault (0x04, vmid 4) at page 69399, read from VGT (53)

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #6 from Christian König <deathsimple@vodafone.de> ---
(In reply to Andy Furniss from comment #5)
> I don't know about Elemental as it's far harder to trigger, but first try
> with valley produced -
> 
> [  156.617954] radeon 0000:01:00.0: GPU fault detected: 146 0x02e83504
> [  156.617960] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
> 0x00010F17
> [  156.617961] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
> 0x08035004
> [  156.617963] VM fault (0x04, vmid 4) at page 69399, read from VGT (53)

Sounds like a different problem triggered by the same patchset to me.

But first things first, is the original issue with the list corruption fixed?
If yes we can start to look into this one as well.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #7 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Christian König from comment #6)
> (In reply to Andy Furniss from comment #5)
> > I don't know about Elemental as it's far harder to trigger, but first try
> > with valley produced -
> > 
> > [  156.617954] radeon 0000:01:00.0: GPU fault detected: 146 0x02e83504
> > [  156.617960] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
> > 0x00010F17
> > [  156.617961] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
> > 0x08035004
> > [  156.617963] VM fault (0x04, vmid 4) at page 69399, read from VGT (53)
> 
> Sounds like a different problem triggered by the same patchset to me.
> 
> But first things first, is the original issue with the list corruption
> fixed? If yes we can start to look into this one as well.

It's OK so far, but then I need more time as I don't really know how to trigger
it and last time I called it as OK (in another bug) it wasn't.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #8 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Andy Furniss from comment #7)
> (In reply to Christian König from comment #6)
> > (In reply to Andy Furniss from comment #5)
> > > I don't know about Elemental as it's far harder to trigger, but first try
> > > with valley produced -
> > > 
> > > [  156.617954] radeon 0000:01:00.0: GPU fault detected: 146 0x02e83504
> > > [  156.617960] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
> > > 0x00010F17
> > > [  156.617961] radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
> > > 0x08035004
> > > [  156.617963] VM fault (0x04, vmid 4) at page 69399, read from VGT (53)
> > 
> > Sounds like a different problem triggered by the same patchset to me.
> > 
> > But first things first, is the original issue with the list corruption
> > fixed? If yes we can start to look into this one as well.
> 
> It's OK so far, but then I need more time as I don't really know how to
> trigger it and last time I called it as OK (in another bug) it wasn't.

Still haven't crashed Elemental but have got -

[29066.333908] [drm:radeon_gem_va_update_vm] *ERROR* Couldn't update BO_VA
(-512)
[29066.335653] [drm:radeon_gem_va_update_vm] *ERROR* Couldn't update BO_VA
(-512)

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #9 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Christian König from comment #6)

> But first things first, is the original issue with the list corruption
> fixed? If yes we can start to look into this one as well.

Enough time has passed now, so I do think that the patch fixed the list
corruption.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #10 from Lorenzo Bona <lorenz.bona@gmail.com> ---
I found same issues here.

[ 1384.901951] [drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA
(-512)
[ 1453.198866] [drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA
(-512)
[ 2215.773607] [drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA
(-512)
[ 2351.238014] [drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA
(-512)
[ 3877.903397] [drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA
(-512)

Self compiled kernel from Linus git.
3.19-rc2+ right now.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #11 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Lorenzo Bona from comment #10)
> 
> [ 1384.901951] [drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update
> BO_VA (-512)

Christian, any ideas for these? Various people including myself are still
hitting them occasionally.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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--- Comment #12 from Christian König <deathsimple@vodafone.de> ---
Created attachment 111961
  --> https://bugs.freedesktop.org/attachment.cgi?id=111961&action=edit
Fix for printing the error message

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

--- Comment #13 from Christian König <deathsimple@vodafone.de> ---
(In reply to Michel Dänzer from comment #11)
> (In reply to Lorenzo Bona from comment #10)
> > 
> > [ 1384.901951] [drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update
> > BO_VA (-512)
> 
> Christian, any ideas for these? Various people including myself are still
> hitting them occasionally.

Ups, yeah trivial to fix.

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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https://bugs.freedesktop.org/show_bug.cgi?id=85207

Andy Furniss <adf.lists@gmail.com> changed:

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

--- Comment #14 from Andy Furniss <adf.lists@gmail.com> ---
Should have been closed some time ago

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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Christian König <deathsimple@vodafone.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |commiethebeastie@gmail.com

--- Comment #15 from Christian König <deathsimple@vodafone.de> ---
*** Bug 88211 has been marked as a duplicate of this bug. ***

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[Bug 85207] agd5f drm-next-3.19-wip + Unreal Elemental sometimes = list_add corruption/hung task

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Christian König <deathsimple@vodafone.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #16 from Christian König <deathsimple@vodafone.de> ---
Let's close this.

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