[Bug 29556] New: [rv620] GPU reset followed by black screen

[Bug 29556] New: [rv620] GPU reset followed by black screen

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https://bugs.freedesktop.org/show_bug.cgi?id=29556

           Summary: [rv620] GPU reset followed by black screen
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: scary.moo@gmail.com


Created an attachment (id=37840)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37840)
system dmesg

Using latest git (as of 12/08/2010) of libdrm, mesa(classic),xf86-video-ati and
drm-radeon-testing (commit drm/radeon/kms: enable writeback on remaing asics ), 
gpu is a hd3470 mobility (rv620), forced to lowest power state 
(echo "low" > /sys/class/drm/card0/device/power_profile).
During normal web browsing, maybe while playing a flash video, the mouse cursor
suddenly stops and immediately after I get a black screen from which I cannot
recover unless I sysrq-reboot (haven't tried ssh). 
 Upon reboot a check of the system log shows 

[ 2325.450063] radeon 0000:01:00.0: GPU lockup CP stall for more than 1000msec
[ 2325.450066] ------------[ cut here ]------------
[ 2325.450083] WARNING: at drivers/gpu/drm/radeon/radeon_fence.c:239
radeon_fence_wait+0x35b/0x3c0 [radeon]()
[ 2325.450085] Hardware name: Satellite A300
[ 2325.450087] GPU lockup (waiting for 0x0000BDBC last fence id 0x0000BDBA)
[ 2325.450089] Modules linked in: radeon ttm ath5k drm_kms_helper cfbcopyarea
cfbimgblt cfbfillrect i2c_i801 ath
[ 2325.450099] Pid: 1954, comm: X Not tainted 2.6.35+ #19
[ 2325.450101] Call Trace:
[ 2325.450108]  [<ffffffff8103a04a>] warn_slowpath_common+0x7a/0xb0
[ 2325.450111]  [<ffffffff8103a121>] warn_slowpath_fmt+0x41/0x50
[ 2325.450120]  [<ffffffffa009ba1b>] radeon_fence_wait+0x35b/0x3c0 [radeon]
[ 2325.450125]  [<ffffffff810521f0>] ? autoremove_wake_function+0x0/0x40
[ 2325.450134]  [<ffffffffa009c1fc>] radeon_sync_obj_wait+0xc/0x10 [radeon]
[ 2325.450139]  [<ffffffffa005ad69>] ttm_bo_wait+0xf9/0x1b0 [ttm]
[ 2325.450144]  [<ffffffffa005e11f>] ttm_bo_move_accel_cleanup+0x9f/0x2e0 [ttm]
[ 2325.450153]  [<ffffffffa009c32f>] radeon_move_blit+0x11f/0x180 [radeon]
[ 2325.450162]  [<ffffffffa009c786>] radeon_bo_move+0xb6/0x1e0 [radeon]
[ 2325.450166]  [<ffffffffa005b1a5>] ttm_bo_handle_move_mem+0x135/0x410 [ttm]
[ 2325.450170]  [<ffffffffa005d2c9>] ttm_bo_evict+0x1b9/0x3f0 [ttm]
[ 2325.450175]  [<ffffffff81090001>] ? __isolate_lru_page+0x81/0xa0
[ 2325.450179]  [<ffffffffa005c6f7>] ttm_mem_evict_first+0x147/0x1e0 [ttm]
[ 2325.450183]  [<ffffffffa005d059>] ttm_bo_mem_space+0x3e9/0x4a0 [ttm]
[ 2325.450187]  [<ffffffffa005d5e7>] ttm_bo_move_buffer+0xe7/0x160 [ttm]
[ 2325.450192]  [<ffffffff81260028>] ? drm_mapbufs+0x318/0x340
[ 2325.450196]  [<ffffffffa005d6f6>] ttm_bo_validate+0x96/0x120 [ttm]
[ 2325.450199]  [<ffffffffa005db35>] ttm_bo_init+0x2e5/0x340 [ttm]
[ 2325.450209]  [<ffffffffa009d198>] radeon_bo_create+0x128/0x220 [radeon]
[ 2325.450218]  [<ffffffffa009cf10>] ? radeon_ttm_bo_destroy+0x0/0xc0 [radeon]
[ 2325.450228]  [<ffffffffa00b1aa4>] radeon_gem_object_create+0x84/0x100
[radeon]
[ 2325.450232]  [<ffffffff810c9030>] ? pollwake+0x0/0x60
[ 2325.450242]  [<ffffffffa00b1f1f>] radeon_gem_create_ioctl+0x4f/0xe0 [radeon]
[ 2325.450246]  [<ffffffff81398e94>] ? sock_aio_read+0x134/0x150
[ 2325.450249]  [<ffffffff8126138c>] drm_ioctl+0x33c/0x410
[ 2325.450259]  [<ffffffffa00b1ed0>] ? radeon_gem_create_ioctl+0x0/0xe0
[radeon]
[ 2325.450262]  [<ffffffff810b8bf2>] ? do_sync_read+0xd2/0x110
[ 2325.450266]  [<ffffffff810c7b2c>] vfs_ioctl+0x3c/0xd0
[ 2325.450268]  [<ffffffff810c812c>] do_vfs_ioctl+0x7c/0x520
[ 2325.450271]  [<ffffffff810b9345>] ? vfs_read+0x105/0x140
[ 2325.450274]  [<ffffffff810c861a>] sys_ioctl+0x4a/0x80
[ 2325.450277]  [<ffffffff81004669>] ? do_device_not_available+0x9/0x10
[ 2325.450280]  [<ffffffff8100256b>] system_call_fastpath+0x16/0x1b
[ 2325.450283] ---[ end trace b2d00ea6bab57761 ]---
[ 2325.450295] [drm] Disabling audio support
[ 2325.451428] radeon 0000:01:00.0: GPU softreset 
[ 2325.451431] radeon 0000:01:00.0:   R_008010_GRBM_STATUS=0xA0003030
[ 2325.451435] radeon 0000:01:00.0:   R_008014_GRBM_STATUS2=0x00000003
[ 2325.451438] radeon 0000:01:00.0:   R_000E50_SRBM_STATUS=0x200010C0
[ 2325.451452] radeon 0000:01:00.0:   R_008020_GRBM_SOFT_RESET=0x00007FEE
[ 2325.468635] radeon 0000:01:00.0: R_008020_GRBM_SOFT_RESET=0x00000001
[ 2325.484646] radeon 0000:01:00.0:   R_008010_GRBM_STATUS=0x00003030
[ 2325.484651] radeon 0000:01:00.0:   R_008014_GRBM_STATUS2=0x00000003
[ 2325.484654] radeon 0000:01:00.0:   R_000E50_SRBM_STATUS=0x200000C0
[ 2325.485660] radeon 0000:01:00.0: GPU reset succeed
[ 2325.506653] [drm] Clocks initialized !
[ 2382.495138] SysRq : Emergency Sync

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[Bug 29556] [rv620] GPU reset followed by black screen

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https://bugs.freedesktop.org/show_bug.cgi?id=29556

--- Comment #1 from Stefano Carignano <scary.moo@gmail.com> 2010-08-13 04:03:30 PDT ---
Created an attachment (id=37841)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37841)
Xorg log

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[Bug 29556] [rv620] GPU reset followed by black screen

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--- Comment #2 from Marc <marvin24@gmx.de> 2010-08-13 05:14:33 PDT ---
Created an attachment (id=37845)
 View: https://bugs.freedesktop.org/attachment.cgi?id=37845
 Review: https://bugs.freedesktop.org/review?bug=29556&attachment=37845

rebased V2 blit patch from dri-devel

can you try this patch ontop of d-r-t?

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[Bug 29556] [rv620] GPU reset followed by black screen

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--- Comment #3 from Marc <marvin24@gmx.de> 2010-08-15 04:45:10 PDT ---
with the above patch the problem got not really cured here. It just happens
more seldom. So there is still something wrong with the blit code in d-r-t.

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[Bug 29556] [rv620] GPU reset followed by black screen

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--- Comment #4 from Stefano Carignano <scary.moo@gmail.com> 2010-08-15 07:02:15 PDT ---
(In reply to comment #3)
> with the above patch the problem got not really cured here. It just happens
> more seldom. So there is still something wrong with the blit code in d-r-t.

oh that's too bad, I tried the patch for a couple days now and it did seem to
improve things, namely I haven't managed to crash the system anymore (I'm not
using it heavily though, is this related to the gpu load or is it somewhat
random ?)

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--- Comment #5 from Marc <marvin24@gmx.de> 2010-08-16 10:40:17 PDT ---
In fact, the bug is a little different now. Instead of a GPU hang, Xorg just
blocks in D-state, no dmesg output. I did a cat /proc/`pidof X`/stack and got:

[<ffffffffa01ac7b2>] radeon_fence_wait+0x1d1/0x2ea [radeon]
[<ffffffffa01acf41>] radeon_sync_obj_wait+0x11/0x13 [radeon]
[<ffffffffa009295c>] ttm_bo_wait+0xbe/0x153 [ttm]
[<ffffffffa0095b54>] ttm_bo_move_accel_cleanup+0x8b/0x29f [ttm]
[<ffffffffa01ad07d>] radeon_move_blit+0x12a/0x148 [radeon]
[<ffffffffa01ad420>] radeon_bo_move+0x114/0x13c [radeon]
[<ffffffffa0092da9>] ttm_bo_handle_move_mem+0x1b6/0x2b1 [ttm]
[<ffffffffa009449e>] ttm_bo_evict+0x2e1/0x34a [ttm]
[<ffffffffa009467d>] ttm_mem_evict_first+0x176/0x1a4 [ttm]
[<ffffffffa0094141>] ttm_bo_mem_space+0x3fd/0x479 [ttm]
[<ffffffffa0094b6e>] ttm_bo_move_buffer+0xb3/0x11b [ttm]
[<ffffffffa0094c83>] ttm_bo_validate+0xad/0xf6 [ttm]
[<ffffffffa0094ffe>] ttm_bo_init+0x332/0x36b [ttm]
[<ffffffffa01ae8e9>] radeon_bo_create+0x17f/0x246 [radeon]
[<ffffffffa01beac8>] radeon_gem_object_create+0x7d/0xda [radeon]
[<ffffffffa01beb72>] radeon_gem_create_ioctl+0x4d/0xab [radeon]
[<ffffffffa002543c>] drm_ioctl+0x255/0x34d [drm]
[<ffffffff810f719c>] vfs_ioctl+0x32/0xa6
[<ffffffff810f7aba>] do_vfs_ioctl+0x46a/0x4a3
[<ffffffff810f7b49>] sys_ioctl+0x56/0x79
[<ffffffff81002b9b>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff

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--- Comment #6 from Marc <marvin24@gmx.de> 2010-08-16 10:43:03 PDT ---
btw. this happens often when displaying images.google.com (with some images) in
firefox and try to scroll. My screen has 1920x1200 res, but my computer at work
crash also today with 1280x1024 resolution. Maybe this is not so relevant, just
in case...

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--- Comment #7 from Alex Deucher <agd5f@yahoo.com> 2010-08-16 11:02:01 PDT ---
Are you getting these issues specific to d-r-t or are you seeing them on
2.6.36-rc1 or drm-core-next?

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--- Comment #8 from Marc <marvin24@gmx.de> 2010-08-16 14:13:39 PDT ---
it happens on d-r-t since the blit the cleanup
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commit;h=36dff284447cfd7dce032b760842952eefa7bddf
I also have V2 of the cleanup (see comment #2) applied (and 2.6.35.2 also).

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--- Comment #9 from Alex Deucher <agd5f@yahoo.com> 2010-08-16 14:44:17 PDT ---
(In reply to comment #8)
> it happens on d-r-t since the blit the cleanup
> http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commit;h=36dff284447cfd7dce032b760842952eefa7bddf
> I also have V2 of the cleanup (see comment #2) applied (and 2.6.35.2 also).

That patch is currently busted as is.  You need to either revert it, or apply
v2 that I posted on dri-devel.

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--- Comment #10 from Marc <marvin24@gmx.de> 2010-08-17 01:39:36 PDT ---
well that's what I did. basicly, the patch in comment #2 is an interdiff of
blit_V1 and blit_V2, so I should produce the same result as unapplying V1 and
applying V2 - correct?

output of interdiff:

diff -u b/drivers/gpu/drm/radeon/r600_blit_kms.c
b/drivers/gpu/drm/radeon/r600_blit_kms.c
--- b/drivers/gpu/drm/radeon/r600_blit_kms.c
+++ b/drivers/gpu/drm/radeon/r600_blit_kms.c
@@ -448,19 +448,8 @@
        int num_packet2s = 0;

        /* pin copy shader into vram if already initialized */
-       if (rdev->r600_blit.shader_obj) {
-               r = radeon_bo_reserve(rdev->r600_blit.shader_obj, false);
-               if (unlikely(r != 0))
-                       return r;
-               r = radeon_bo_pin(rdev->r600_blit.shader_obj,
RADEON_GEM_DOMAIN_VRAM,
-                                 &rdev->r600_blit.shader_gpu_addr);
-               radeon_bo_unreserve(rdev->r600_blit.shader_obj);
-               if (r) {
-                       dev_err(rdev->dev, "(%d) pin blit object failed\n", r);
-                       return r;
-               }
-               return 0;
-       }
+       if (rdev->r600_blit.shader_obj)
+               goto done;

        mutex_init(&rdev->r600_blit.mutex);
        rdev->r600_blit.state_offset = 0;
@@ -519,6 +508,18 @@
        memcpy(ptr + rdev->r600_blit.ps_offset, r6xx_ps, r6xx_ps_size * 4);
        radeon_bo_kunmap(rdev->r600_blit.shader_obj);
        radeon_bo_unreserve(rdev->r600_blit.shader_obj);
+
+done:
+       r = radeon_bo_reserve(rdev->r600_blit.shader_obj, false);
+       if (unlikely(r != 0))
+               return r;
+       r = radeon_bo_pin(rdev->r600_blit.shader_obj, RADEON_GEM_DOMAIN_VRAM,
+                         &rdev->r600_blit.shader_gpu_addr);
+       radeon_bo_unreserve(rdev->r600_blit.shader_obj);
+       if (r) {
+               dev_err(rdev->dev, "(%d) pin blit object failed\n", r);
+               return r;
+       }
        return 0;
 }

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--- Comment #11 from Alex Deucher <agd5f@yahoo.com> 2010-08-17 07:44:50 PDT ---
is this still a problem with the current d-r-t?

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Marc <marvin24@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marvin24@gmx.de

--- Comment #12 from Marc <marvin24@gmx.de> 2010-08-17 12:12:50 PDT ---
yes it does

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--- Comment #13 from Marc <marvin24@gmx.de> 2010-08-17 12:14:24 PDT ---
(In reply to comment #12)
> yes it does

eh - is!

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--- Comment #14 from Alex Deucher <agd5f@yahoo.com> 2010-08-17 12:38:46 PDT ---
Can you bisect to see what commit is causing the problem?

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--- Comment #15 from Marc <marvin24@gmx.de> 2010-08-17 14:05:34 PDT ---
the bug is hard to trigger (10 min scrolling with firefox), so bisecting will
take a lot of time. I booted with no_wb=1 just for testing and now it seems to
work fine. So maybe the blit and the writeback change have some unhealthy
relationship. Also somehow the git history got changed... I'm sure the
writeback changes where there many days ago and before the blit change. Maybe
it also helps, that original reporter (Stefano) has a rv620 chip which is
(AFAIK) similar to the rs780/785 chips.

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--- Comment #16 from Alex Deucher <agd5f@yahoo.com> 2010-08-17 14:09:48 PDT ---
(In reply to comment #15)
> the bug is hard to trigger (10 min scrolling with firefox), so bisecting will
> take a lot of time. I booted with no_wb=1 just for testing and now it seems to
> work fine. So maybe the blit and the writeback change have some unhealthy

writeback has nothing to do with the blit but it might cause problems on it's
own.  If no_wb=1 fixes the issue, then writeback might not work well on your
system.

> relationship. Also somehow the git history got changed... I'm sure the
> writeback changes where there many days ago and before the blit change. Maybe

The branch was rebased.

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--- Comment #17 from Andy Furniss <lists@andyfurniss.entadsl.com> 2010-08-18 03:20:48 PDT ---
(In reply to comment #0)
> Created an attachment (id=37840)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37840)
> system dmesg
> 
> Using latest git (as of 12/08/2010) of libdrm, mesa(classic),xf86-video-ati and
> drm-radeon-testing (commit drm/radeon/kms: enable writeback on remaing asics ), 
> gpu is a hd3470 mobility (rv620), forced to lowest power state 
> (echo "low" > /sys/class/drm/card0/device/power_profile).

I managed to get the same with the last d-r-t, using low power + gits like you,
but this was on a rv790.

It seems like seamonkey was involved, but just to confuse the issue I wasn't
running a clean d-r-t or ddx - which may well be irrelevant but -

d-r-t had tiling fixed + 2 cs parser fixes from the list, ddx had wait for
vline FALSE and dri2 sync was off in drirc.

Had tested without issue many games, mplayer and mesa demos over the day.

The lockup was triggered when I found a seamonkey bug that makes it spawn a new
window every 1/2-1 sec. While this was happening as X was unuseable due to the
constant new windows I was switching back and forth between vt2 and 7. Then it
locked up and I didn't get the screen back. After sysrq reboot, the card was
still in a state - alsa failed to probe hardware, but I carried on into X
looked at kern log in an xterm OK, but as soon as I started seamonkey it went
again.

Reboot went OK this time and try as hard as I could - triggering seamonkey bug
and switching vts I couldn't reproduce.

Now running current vanilla d-r-t and ddx I have so far failed to trigger it,
but then I ran the other d-r-t for days OK.

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Thierry Vignaud <tvignaud@mandriva.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch

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--- Comment #18 from Marc <marvin24@gmx.de> 2010-09-05 10:30:34 PDT ---
seems the bug I was seeing (see comment #5) is fixed by v3 fencing patch, so
for me it is ready to be closed...

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--- Comment #19 from Andy Furniss <lists@andyfurniss.entadsl.com> 2010-09-05 15:45:22 PDT ---
(In reply to comment #18)
> seems the bug I was seeing (see comment #5) is fixed by v3 fencing patch, so
> for me it is ready to be closed...

I have failed to reproduce the one lockup I had with various d-r-ts, and now am
running d-r-t + v3 fence.

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https://bugs.freedesktop.org/show_bug.cgi?id=29556

Alex Deucher <agd5f@yahoo.com> changed:

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

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