[Bug 29389] New: [r300g] [bisected] hard locks in openarena with kernel 2.6.35

[Bug 29389] New: [r300g] [bisected] hard locks in openarena with kernel 2.6.35

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29389

           Summary: [r300g] [bisected] hard locks in openarena with kernel
                    2.6.35
           Product: Mesa
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: ghepeu@virgilio.it


Created an attachment (id=37557)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37557)
git-bisect.log

Yesterday I upgraded to kernel 2.6.35 and I had a lockup after playing for a
few second at openarena. The day before I had played for a few minutes without
any issue (testing r300g) so I immediately suspected the kernel.

I'm using a radeon x550 (rv370) with yesterday git snapshot of mesa and
xf86-video-ati and xorg-server 1.8.2.

Both r300c/DRI/UMS and r300c/DRI2/KMS dont' seem to suffer from the issue, only
gallium. Nothing unusual in the logs.

I bisected from 2.6.34 (good) to 2.6.35 (bad) and git bisect pointed to commit
eb1f8e4f3be898df808e2dfc131099f5831d491d

eb1f8e4f3be898df808e2dfc131099f5831d491d is the first bad commit
commit eb1f8e4f3be898df808e2dfc131099f5831d491d
Author: Dave Airlie <airlied@redhat.com>
Date:   Fri May 7 06:42:51 2010 +0000

    drm/fbdev: rework output polling to be back in the core. (v4)

    After thinking it over a lot it made more sense for the core to deal with
    the output polling especially so it can notify X.

    v2: drop plans for fake connector - per Michel's comments - fix X patch
sent to xorg-devel, add intel polled/hpd setting, add initial nouveau
polled/hpd settings.

    v3: add config lock take inside polling, add intel/nouveau poll init/fini
calls

    v4: config lock was a bit agressive, only needed around connector list
reading.
    otherwise it could re-enter.

    glisse: discard drm_helper_hpd_irq_event

    v3: Reviewed-by: Michel Dänzer <michel@daenzer.net>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

:040000 040000 01a1bf1ae4e06bfd3ae9ae67b5b5059e964f5ae4
041231a5c060e531ce0d8127c6f7abc79c14ce76 M    drivers
:040000 040000 b67fd6698fa239d26ca9fa2296ea2403e1eaaf1c
cadb905c6d8647313107790ce8b681f4611ee726 M    include


I had to skip a few revisions because opengl didn't work at all and one
revision I'm not exactly sure it crashed for the same issue (the symptoms were
slightly different, it crashed after maybe two minutes instead of 5-30s) so I'm
not sure that that's the real culprit.

The bisection run took me a few hours and a lot of reboots, so I'm not exactly
eager to try it again...

The full git bisect log is attached.

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[Bug 29389] [r300g] [bisected] hard locks in openarena with kernel 2.6.35

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29389

Giacomo Perale <ghepeu@virgilio.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #37557|text/x-log                  |text/plain
          mime type|                            |

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[Bug 29389] [r300g] [bisected] hard locks in openarena with kernel 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

--- Comment #1 from Giacomo Perale <ghepeu@virgilio.it> 2010-08-19 07:05:58 PDT ---
Created an attachment (id=37981)
 View: https://bugs.freedesktop.org/attachment.cgi?id=37981
 Review: https://bugs.freedesktop.org/review?bug=29389&attachment=37981

add parameter to disable polling

I came back from vacation and found a patch from Chris Wilson in dri-devel who
added a parameter to disable polling; since my bisection run pointed to the
commit who enabled polling as the origin of my problem, I quickly adapted the
patch to vanilla 2.6.35 to do some tests.

The patch is attached to this comment; to try it patch the kernel and boot with
drm_kms_helper.poll=0; be careful, without this parameter sometime X refused to
start here. Since this was only a test I didn't look too hard, I think it's
related to the slow work->workqueues conversion.

Anyway, with polling disabled I was able to play with openarena for about 15
minutes, while with polling (without the patch) I had a hardlock in 30-60s.

Since this could be important, I have a VGA/DVI card and I'm using the DVI
port, with nothing connected to the VGA port.

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[Bug 29389] [r300g] [bisected] hard locks in openarena with kernel 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

--- Comment #2 from Niels Ole Salscheider <niels_ole@salscheider-online.de> 2010-08-26 09:09:06 PDT ---
I can confirm this problem. With polling disabled my computer does not lock up
anymore.

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

Marek Olšák <maraeo@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[r300g] [bisected] hard     |[r300g] [bisected] hard
                   |locks in openarena with     |locks with polling enabled
                   |kernel 2.6.35               |in 2.6.35

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

Marek Olšák <maraeo@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzi09.fdo.tormod@xoxy.net

--- Comment #3 from Marek Olšák <maraeo@gmail.com> 2010-08-27 21:21:55 PDT ---
*** Bug 28474 has been marked as a duplicate of this bug. ***

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

Matt Turner <mattst88@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Drivers/DRI/r300            |Drivers/Gallium/r300

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

--- Comment #4 from Dave Airlie <airlied@freedesktop.org> 2010-10-20 17:27:01 PDT ---
can you attach a dmesg for the rv370 card?

and also what connectors you have monitors connected to.

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

--- Comment #5 from Dave Airlie <airlied@freedesktop.org> 2010-10-20 18:38:47 PDT ---
Created an attachment (id=39604)
 View: https://bugs.freedesktop.org/attachment.cgi?id=39604
 Review: https://bugs.freedesktop.org/review?bug=29389&attachment=39604

patch to disable polling DACs

does this patch help when booting with polling enabled?

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

--- Comment #6 from pj_beers@hotmail.com 2010-10-24 14:40:13 PDT ---
I reported the same bug (I think) over here:

https://bugzilla.kernel.org/show_bug.cgi?id=20042

Your latest patch disabling polling DACs works for my, I applied it to
2.6.36-rc7 and then ran Penumbra Overture without any problem. I'm using rv380,
not rv370 (according to dmesg). I've included dmesg output as an attachment.

Thanks very much for this patch!

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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--- Comment #7 from pj_beers@hotmail.com 2010-10-24 14:43:21 PDT ---
Created an attachment (id=39745)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=39745)
dmesg 2.6.36-rc7 with disabled polling DACs patch, rv380

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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--- Comment #8 from Tomasz Czapiewski <xeros@irc.pl> 2010-10-25 01:51:53 PDT ---
I have radeon module compilation errors with this patch applied on 2.6.35:

make: Entering directory `/usr/src/linux-headers-2.6.35-22-generic'             
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_drv.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_cp.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_state.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_mem.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_irq.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/r300_cmdbuf.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/r600_cp.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_device.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_asic.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_kms.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_atombios.o 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_atombios.c:
In function ‘radeon_atom_get_hpd_info_from_gpio’:         
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_atombios.c:199:
warning: ‘hpd.plugged_state’ is used uninitialized in 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_agp.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/atombios_crtc.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_combios.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/atom.o  
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_fence.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_ttm.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_object.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_gart.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_legacy_crtc.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_legacy_encoders.o 
  CC [M] 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_connectors.o 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_connectors.c:
In function ‘radeon_vga_detect’:                        
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_connectors.c:626:
error: ‘force’ undeclared (first use in this functio
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_connectors.c:626:
error: (Each undeclared identifier is reported only 
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_connectors.c:626:
error: for each function it appears in.)            
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_connectors.c:
In function ‘radeon_dvi_detect’:                        
/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_connectors.c:814:
error: ‘force’ undeclared (first use in this functio
make[1]: ***
[/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon/radeon_connectors.o]
Błąd 1                                    
make[1]: *** Oczekiwanie na niezakończone zadania....                           
make: ***
[_module_/usr/src/linux-source-2.6.35/linux-source-2.6.35/drivers/gpu/drm/radeon]
Error 2                                                  
make: Leaving directory `/usr/src/linux-headers-2.6.35-22-generic'

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

--- Comment #9 from Marek Olšák <maraeo@gmail.com> 2010-11-21 02:59:35 PST ---
*** Bug 30575 has been marked as a duplicate of this bug. ***

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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https://bugs.freedesktop.org/show_bug.cgi?id=29389

--- Comment #10 from Hicham HAOUARI <hicham.haouari@gmail.com> 2010-11-21 04:17:13 PST ---
This bug have been fixed in upstream kernel (.37-rc1 IIRC), so I think this bug
can be safely closed.

FWIW, it has been fixed in fedora stock kernel 2.6.35-51.fc14 also.

Thank you Dave

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[Bug 29389] [r300g] [bisected] hard locks with polling enabled in 2.6.35

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Marek Olšák <maraeo@gmail.com> changed:

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

--- Comment #11 from Marek Olšák <maraeo@gmail.com> 2010-11-21 05:46:18 PST ---
Thanks for feedback, closing..

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