[Bug 58667] New: Random crashes on CAYMAN

[Bug 58667] New: Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

          Priority: medium
            Bug ID: 58667
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Random crashes on CAYMAN
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: v10lator@myway.de
          Hardware: Other
            Status: NEW
           Version: DRI CVS
         Component: DRM/Radeon
           Product: DRI

This is with newest mesa from git with kernel 3.8-rc1 (+ this patch:
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-3.8&id=668bbc81baf0f34df832d8aca5c7d5e19a493c68
)

The screen first freezes (mouse still movable, keyboard not responding, not
even to MagSysRQ), then the monitor goes off (standby) and back on with only
garbage on the screen. 

Not sure if this has anything to do with it (but it should get fixed anyway)
but dmesg gets spammed with this:
[  533.928472] radeon 0000:03:00.0: GPU fault detected: 146 0x00335514
[  533.928477] radeon 0000:03:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x00000000
[  533.928483] radeon 0000:03:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x00000000

where the address isn't always the same, example:
[  533.928374] radeon 0000:03:00.0: GPU fault detected: 146 0x0033ed14
[  533.928379] radeon 0000:03:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x00000000
[  533.928385] radeon 0000:03:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x00000000

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #1 from Thomas Rohloff <v10lator@myway.de> ---
Created attachment 72006
  --> https://bugs.freedesktop.org/attachment.cgi?id=72006&action=edit
Full dmesg output

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #2 from Alex Deucher <agd5f@yahoo.com> ---
Is this a regression?  Does it happen with older versions of mesa or kernel? 
If it's a regression can you identify which component (mesa or kernel) and
bisect?

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #3 from Alex Deucher <agd5f@yahoo.com> ---
May also be related to bug 58354.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #4 from Thomas Rohloff <v10lator@myway.de> ---
!Is this a regression?  Does it happen with older versions of mesa or kernel?!
Not that I know about.
"May also be related to bug 58354."
Do you have the path noted there ("drm/radeon: use DMA engine for VM page table
updates on cayman/TN") ? I would loce to try to revert this patch and test it,
but I'm unable to google it.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #5 from Thomas Rohloff <v10lator@myway.de> ---
I should really read before I click save, sorry. Here again:

"Is this a regression?  Does it happen with older versions of mesa or kernel?"
Not that I know about.

"May also be related to bug 58354."
Do you have a link to the patch noted there ("drm/radeon: use DMA engine for VM
page table updates on cayman/TN") ? I would love to try to revert this patch
and test it, but I'm unable to google it.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #6 from Thomas Rohloff <v10lator@myway.de> ---
Created attachment 72041
  --> https://bugs.freedesktop.org/attachment.cgi?id=72041&action=edit
New dmesg output

Never mind, I found the patch here:
http://cgit.freedesktop.org/~airlied/linux/commit/?h=drm-next&id=33e5467871b3007c4e6deea95b2cac38a55ff9f5

I reverted it and no crash so far (but as they are random they might still
occur). On the other side the dmesg messages are still there. Uploading the new
output just in case it is needed.

While writing this minecraft (which I used to trigger the crashes) crashed
(right before and shortly after the crash the mouse wsq in slow-motion and I
thought it will crash right away).

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #7 from Thomas Rohloff <v10lator@myway.de> ---
Crashes are still there after reverting "drm/radeon: use DMA engine for VM page
table updates on cayman/TN"

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #8 from Thomas Rohloff <v10lator@myway.de> ---
But this crash was different: The image froze but the monitor didn't go into
standby nor came it back with garbage.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #9 from Thomas Rohloff <v10lator@myway.de> ---
Bisected mesa.

This is a mesa bug caused by
http://cgit.freedesktop.org/mesa/mesa/commit/?id=6532eb17baff6e61b427f29e076883f8941ae664

Can anybody move this to the right place or do I have to re-create the report
(and if so: Where) ?

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #10 from Thomas Rohloff <v10lator@myway.de> ---
I was to fast with this. While the error messages in dmesg are gone it still
randomly crashes, but this time the computer just froze completely. I think
this bug report are in fact at least two bugs.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #11 from Thomas Rohloff <v10lator@myway.de> ---
Also the error messages aren't completely gone.
I did go back to mesa commit f5632094ba0c19d570ea47025cf6da75ef8457a (mesa:
Allow glReadBuffer(GL_NONE) for winsys framebuffers.) and played Minecraft a
bit. Suddenly all slowed down and the screen started to corrupt. I looked into
dmesg and the messages where back.
I made a video from after I killed Minecraft (when the corruption slowly
disappeared) and after all corruptions where gone the message spam stopped
again: https://www.dropbox.com/s/su1b6oaeiz028y2/out-86.ogv

I will do more bisecting but as this is really randomly it may take a long
time. Also I hope my hardware hasn't been damaged by
6532eb17baff6e61b427f29e076883f8941ae664 (is this possible and if so: Is there
any way to get my money back?)

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #12 from Thomas Rohloff <v10lator@myway.de> ---
I did go back till
http://cgit.freedesktop.org/mesa/mesa/commit/?id=6c99f2101fbd3edb7d5899c44ca9d984a3c0f8b6
and the bug is still there (not the crashes directly, at least I couldn't
trigger them, but the error messages) so either this bug is really old or it's
not a mesa bug (or, but that would be really bad: It damaged the hardware).

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #13 from Thomas Rohloff <v10lator@myway.de> ---
After going back to kernel 3.6 (3.7 not tested) I'm unable to re-trigger this
bug even after doing more actions that triggered it than in every test before.
So I'm pretty sure this is a kernel bug!

Is anybody able to help be bisecting the kernel? I don't even know which tree
(drm-next?)

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #14 from Dmitry Cherkassov <dcherkassov@gmail.com> ---
drm-next should be fine.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #15 from Thomas Rohloff <v10lator@myway.de> ---
Thanks for the fast reply. Just to get sure before I clone a few hours for no
reason:

git clone git://people.freedesktop.org/~airlied/linux
git checkout drm-next

should be a good start, right?

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #16 from Dmitry Cherkassov <dcherkassov@gmail.com> ---
git checkout drm-next-3.8 
i guess

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #17 from Dmitry Cherkassov <dcherkassov@gmail.com> ---
or better drm-fixes-3.8
just to be sure. (it has few relevant commits on top)

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #18 from Thomas Rohloff <v10lator@myway.de> ---
There is no drm-next-3.8 nor drm-fixes-3.8 at ~airlied/linux, see:
http://cgit.freedesktop.org/~airlied/linux/refs/ - That's why I asked what
exactly to clone as this step will take hours.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #19 from Thomas Rohloff <v10lator@myway.de> ---
This was a long night but I finally got it: Bad commit:
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-3.8&id=dd54fee7d440c4a9756cce2c24a50c15e4c17ccb

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #20 from Thomas Rohloff <v10lator@myway.de> ---
I'm going crazy. I just removed the bad patch from 3.8-rc1 and updated mesa to
newest git version (therefore I had to stay at
a9048aa6e6abcbeb498ef286630be30729aebaf3 cause of a patch missing in the
bisected tree) and the bug is back again.

I don't know how to find the root of it and I have headache cause of it. There
seems to be something really wrong with memory management but it's way over my
head.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #21 from Thomas Rohloff <v10lator@myway.de> ---
Here's my final summary:

If
http://cgit.freedesktop.org/mesa/mesa/commit/?id=6532eb17baff6e61b427f29e076883f8941ae664
and
cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-3.8&id=dd54fee7d440c4a9756cce2c24a50c15e4c17ccb
is missing the bug doesn't trigger. If the first one is there the bug is
triggered extremely often, spamming dmesg. If only the second is there the bug
triggers randomly (good way to trigger: Lot of exploding TNT in Minecraft. Just
build TNT pillars and ignite them till you are at bedrock).

My last hope is that some genius hacker which knows the driver has some "ah, I
see the problem" moment. :(

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |58354

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #22 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #5)
> I should really read before I click save, sorry. Here again:
> 
> "Is this a regression?  Does it happen with older versions of mesa or
> kernel?"
> Not that I know about.
> 
> "May also be related to bug 58354."
> Do you have a link to the patch noted there ("drm/radeon: use DMA engine for
> VM page table updates on cayman/TN") ? I would love to try to revert this
> patch and test it, but I'm unable to google it.

"Is this a regression?  Does it happen with older versions of mesa or kernel?"
Yes. Previous kernel 3.7 doesn't show this problem.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #23 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #22)
> "Is this a regression?  Does it happen with older versions of mesa or
> kernel?"
> Yes. Previous kernel 3.7 doesn't show this problem.

Can you bisect?  Is it the same commit Thomas landed on or another one?

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #24 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #23)
> (In reply to comment #22)
> > "Is this a regression?  Does it happen with older versions of mesa or
> > kernel?"
> > Yes. Previous kernel 3.7 doesn't show this problem.
> 
> Can you bisect?  Is it the same commit Thomas landed on or another one?

Pretty sure it is the same problem. With kernel 3.8.0-rcx, just launching Gnome
Shell starts flooding my logs of:
radeon 0000:0X:00.0: GPU fault detected: 146 0x00xxxxxx
radeon 0000:0X:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x00000000
radeon 0000:0X:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x00000000

I'll bisect between 3.7 and 3.8-rc1 and see if I end up at the same thing.
Having a crash here and there from time to time may be coming from something
different, but the incessant flood is a big one. In a single session, I end up
with kernel.log and everything.log being over 52GB each. I'm also sure this
message have to be triggered is something wrong is going on. I'll let you know
when I'm done bisecting to figure out what is triggering this flood.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #25 from Thomas Rohloff <v10lator@myway.de> ---
(In reply to comment #24)
> I'll bisect between 3.7 and 3.8-rc1 and see if I end up at the same thing.

Maybe you should just compile
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-3.8&id=dd54fee7d440c4a9756cce2c24a50c15e4c17ccb
(bad) and
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-3.8&id=9d89d78e3a20980205966fba6345645547e59ceb
(good). It would be faster than bisecting and if you get another result than me
you can still do a full bisect afterwards.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #26 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #25)
> (In reply to comment #24)
> > I'll bisect between 3.7 and 3.8-rc1 and see if I end up at the same thing.
> 
> Maybe you should just compile
> http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-3.
> 8&id=dd54fee7d440c4a9756cce2c24a50c15e4c17ccb (bad) and
> http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-3.
> 8&id=9d89d78e3a20980205966fba6345645547e59ceb (good). It would be faster
> than bisecting and if you get another result than me you can still do a full
> bisect afterwards.

That's what I'll do, it makes sense.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #27 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #26)
> (In reply to comment #25)
> > (In reply to comment #24)
> > > I'll bisect between 3.7 and 3.8-rc1 and see if I end up at the same thing.
> > 
> > Maybe you should just compile
> > http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-3.
> > 8&id=dd54fee7d440c4a9756cce2c24a50c15e4c17ccb (bad) and
> > http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-3.
> > 8&id=9d89d78e3a20980205966fba6345645547e59ceb (good). It would be faster
> > than bisecting and if you get another result than me you can still do a full
> > bisect afterwards.
> 
> That's what I'll do, it makes sense.

It seems both are bad: crashed on logon with 9d89d and both flooded my logs.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #28 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
The flood is caused by:
Commit: 4ac0533abaec2b83a7f2c675010eedd55664bc26

Author: Jerome Glisse <jglisse@redhat.com>  2012-12-13 12:08:11
Committer: Alex Deucher <alexander.deucher@amd.com>  2012-12-14 10:45:24
Parent: 9af20792124850369e764965690b99b20623dfc4 (drm/radeon: fix fence locking
in the pageflip callback)
Branch: remotes/origin/master
Follows: v3.7-rc7
Precedes: v3.8-rc1

    drm/radeon: fix htile buffer size computation for command stream checker

    Fix the size computation of the htile buffer.

    Signed-off-by: Jerome Glisse <jglisse@redhat.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

However, I think this is not related to the lockups/crashes. So, the bug's
description points actually to two different bugs: the flood and the crashes.
Should I open a different bug for the flood of GPU fault detected?

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=59089

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #29 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
I just created a new bug (bug 59089) for the GPU fault flood which is not a
direct link with the crashes, the first happening without the other.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #30 from Alex Deucher <agd5f@yahoo.com> ---
Should be fixed with this mesa commit:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=4332f6fc185f968e7563e748b8c949021937c935

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #31 from Thomas Rohloff <v10lator@myway.de> ---
(In reply to comment #30)
> Should be fixed with this mesa commit:
> http://cgit.freedesktop.org/mesa/mesa/commit/
> ?id=4332f6fc185f968e7563e748b8c949021937c935

Sadly it isn't.

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[Bug 58667] Random crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #32 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
You're using a Cayman card, but which model exactly?

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #33 from Alex Deucher <agd5f@yahoo.com> ---
Does a 3.8 kernel it work ok if you revert mesa back to
cf5632094ba0c19d570ea47025cf6da75ef8457a?

I think
r600g: rework flusing and synchronization pattern v7
http://cgit.freedesktop.org/mesa/mesa/commit/?id=24b1206ab2dcd506aaac3ef656aebc8bc20cd27a
may be problematic on cayman.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #34 from Thomas Rohloff <v10lator@myway.de> ---
(In reply to comment #33)
> Does a 3.8 kernel it work ok if you revert mesa back to
> cf5632094ba0c19d570ea47025cf6da75ef8457a?

(In reply to comment #12)
> I did go back till
> http://cgit.freedesktop.org/mesa/mesa/commit/
> ?id=6c99f2101fbd3edb7d5899c44ca9d984a3c0f8b6 and the bug is still there

> 
> I think
> r600g: rework flusing and synchronization pattern v7
> http://cgit.freedesktop.org/mesa/mesa/commit/
> ?id=24b1206ab2dcd506aaac3ef656aebc8bc20cd27a
> may be problematic on cayman.

I'm actually updating my kernel to 3.8-rc3, then I'll test newest mesa and
cf5632094ba0c19d570ea47025cf6da75ef8457a again.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #35 from Thomas Rohloff <v10lator@myway.de> ---
Still there with 3.8-rc3 + mesa cf5632094ba0c19d570ea47025cf6da75ef8457a

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #36 from Jerome Glisse <glisse@freedesktop.org> ---
Did you test with mesa reverted to before following commit :
http://cgit.freedesktop.org/mesa/mesa/commit/?id=24b1206ab2dcd506aaac3ef656aebc8bc20cd27a

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #37 from Jerome Glisse <glisse@freedesktop.org> ---
This patch might help:

http://people.freedesktop.org/~glisse/0001-drm-radeon-exclude-system-placement-when-validating-.patch

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #38 from Thomas Rohloff <v10lator@myway.de> ---
(In reply to comment #37)
> This patch might help:

I applied it to a 3.8-rc3 kernel and while I didn't see the message spam till
now the GPU crashes extremely often (so often that this might be the case I'm
unable to see the spam). Either the image freezes or the monitor goes into
standby. In both cases the keyboard doesn't react anymore (not even SysMagRQ).

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #39 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #38)
> (In reply to comment #37)
> > This patch might help:
> 
> I applied it to a 3.8-rc3 kernel and while I didn't see the message spam
> till now the GPU crashes extremely often (so often that this might be the
> case I'm unable to see the spam). Either the image freezes or the monitor
> goes into standby. In both cases the keyboard doesn't react anymore (not
> even SysMagRQ).

Does it do the same thing without the patch? I applied it yesterday and I
haven't seen any difference.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #40 from Thomas Rohloff <v10lator@myway.de> ---
(In reply to comment #39)
> Does it do the same thing without the patch?

It has random crashes without, too, yes. But way less frequent. In fact I had
to revert that patch to be able to use my desktop for more than 5 minutes
again.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #41 from Thomas Rohloff <v10lator@myway.de> ---
I got a crash with a BUG message. I'm sorry for the bad image quality but I had
no better camera available (that's why I made that many images)

http://img571.imageshack.us/img571/5517/dsc02036ws.jpg
http://img254.imageshack.us/img254/6779/dsc02037i.jpg
http://img834.imageshack.us/img834/4889/dsc02038cz.jpg
http://img835.imageshack.us/img835/5993/dsc02039s.jpg
http://img338.imageshack.us/img338/1946/dsc02040b.jpg
http://img5.imageshack.us/img5/5683/dsc02041hc.jpg
http://img69.imageshack.us/img69/8716/dsc02042vj.jpg
http://img594.imageshack.us/img594/8600/dsc02043cnt.jpg

I also have a video, so if the images aren't enough just ask.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #42 from Thomas Rohloff <v10lator@myway.de> ---
I updated m kernel to 3.8-rc5 and mesa to
http://cgit.freedesktop.org/mesa/mesa/commit/?id=952e6e9f3b0eb179f67345f00e5a7f1dbaa7bdd5
(can't go higher cause of https://bugs.freedesktop.org/show_bug.cgi?id=60038 )
+ disabled huge pages in the kernel and now things are different. First of the
message spam seems to be gone completely and second the GPU doesn't crash
anymore. At one time the image froze but switching to console and back solved
this.

I'll look if it continues like that and later on re-enable huge pages to see
what happens then.

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

--- Comment #43 from Thomas Rohloff <v10lator@myway.de> ---
And again I was to fast with this. I started another game and the dmesg spam
was there again.

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--- Comment #44 from Thomas Rohloff <v10lator@myway.de> ---
And it crashed again, too. :(

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--- Comment #45 from Marek Olšák <maraeo@gmail.com> ---
Is this still an issue with the latest kernel and Mesa?

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[Bug 58667] VM-related crashes on CAYMAN

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https://bugs.freedesktop.org/show_bug.cgi?id=58667

Marek Olšák <maraeo@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Random crashes on CAYMAN    |VM-related crashes on
                   |                            |CAYMAN

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--- Comment #46 from Marek Olšák <maraeo@gmail.com> ---
Also, does setting this environment variable help?

R600_DEBUG=nohyperz

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--- Comment #47 from udo <udovdh@xs4all.nl> ---
Over here, with 3.12.6 and these
$ cat /etc/environment 
LIBGL_DRIVERS_PATH=/opt/xorg/lib/dri/
RADEON_VA=0
R600_DEBUG=nodma

all appears stable.

(git llvm, libclc, mesa, etc)

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Thomas Rohloff <v10lator@myway.de> changed:

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

--- Comment #48 from Thomas Rohloff <v10lator@myway.de> ---
(In reply to comment #45)
> Is this still an issue with the latest kernel and Mesa?

Sorry for the delay. It seems to be fixed.

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