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* [Bug 15969] New: radeon regression couldn't schedule IB on resume with 2.6.34-rc7
@ 2010-05-13 19:06 bugzilla-daemon
  2010-05-13 19:08 ` [Bug 15969] " bugzilla-daemon
                   ` (23 more replies)
  0 siblings, 24 replies; 25+ messages in thread
From: bugzilla-daemon @ 2010-05-13 19:06 UTC (permalink / raw)
  To: dri-devel

https://bugzilla.kernel.org/show_bug.cgi?id=15969

           Summary: radeon regression couldn't schedule IB on resume with
                    2.6.34-rc7
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.34-rc7
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: cedric@belbone.be
        Regression: Yes


Created an attachment (id=26367)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26367)
kernel config

Hello,

When resuming my laptop from a -rc7, my X session reacted weirdly.
Reading the dmesg log, I had :

May 12 21:58:03 enea kernel: [  122.627332] [drm:radeon_ib_schedule] *ERROR*
radeon: couldn't schedule IB(0).
May 12 21:58:03 enea kernel: [  122.627342] [drm:radeon_cs_ioctl] *ERROR* Faild
to schedule IB !
May 12 21:58:03 enea kernel: [  123.251198] [drm:radeon_ib_schedule] *ERROR*
radeon: couldn't schedule IB(1).
May 12 21:58:03 enea kernel: [  123.251207] [drm:radeon_cs_ioctl] *ERROR* Faild
to schedule IB !
May 12 21:58:04 enea kernel: [  123.626341] [drm:radeon_ib_schedule] *ERROR*
radeon: couldn't schedule IB(2).
May 12 21:58:04 enea kernel: [  123.626351] [drm:radeon_cs_ioctl] *ERROR* Faild
to schedule IB !
May 12 21:58:04 enea kernel: [  124.256505] [drm:radeon_ib_schedule] *ERROR*
radeon: couldn't schedule IB(3).
May 12 21:58:04 enea kernel: [  124.256514] [drm:radeon_cs_ioctl] *ERROR* Faild
to schedule IB !
May 12 21:58:05 enea kernel: [  124.626191] [drm:radeon_ib_schedule] *ERROR*
radeon: couldn't schedule IB(4).
May 12 21:58:05 enea kernel: [  124.626200] [drm:radeon_cs_ioctl] *ERROR* Faild
to schedule IB !
May 12 21:58:05 enea kernel: [  125.059095] [drm:radeon_ib_schedule] *ERROR*
radeon: couldn't schedule IB(5).

And so on until IB(15)

This was not the case with a -rc5 kernel nor with a kernel without KMS
(radeon.modeset=0).

Bisection gives me (on drivers/gpu):

# bad: [b57f95a38233a2e73b679bea4a5453a1cc2a1cc9] Linux 2.6.34-rc7
# good: [01bf0b64579ead8a82e7cfc32ae44bc667e7ad0f] Linux 2.6.34-rc5
git bisect start 'v2.6.34-rc7' 'v2.6.34-rc5' '--' 'drivers/gpu/'
# bad: [3515387ba90ef2c38602f4d52c4d5ec5fc95ae5c] drm/radeon/kms: fix panel
scaling adjusted mode setup
git bisect bad 3515387ba90ef2c38602f4d52c4d5ec5fc95ae5c
# good: [88b045077a1462a47503137fd4ca0c31772819ca] drm/radeon: Fix sparc
regression in r300_scratch()
git bisect good 88b045077a1462a47503137fd4ca0c31772819ca
# bad: [404b017d00a9f472bdf725a06892d42f1cba5ed8] drivers/gpu/drm/drm_memory.c:
fix check for end of loop
git bisect bad 404b017d00a9f472bdf725a06892d42f1cba5ed8
# bad: [ccb2ad579f910e6146adf4eb3aa50325253ee8c9] drm/radeon/kms/agp The wrong
AGP chipset can cause a NULL pointer dereference
git bisect bad ccb2ad579f910e6146adf4eb3aa50325253ee8c9

with 797fd5b9dad12a100c81b5782573a41259728cb1 being the culprit

commit 797fd5b9dad12a100c81b5782573a41259728cb1
Author: Marek Olšák <maraeo@gmail.com>
Date:   Tue Apr 13 02:33:36 2010 +0200

    drm/radeon/kms: r300 fix CS checker to allow zbuffer-only fastfill

    Signed-off-by: Marek Olšák <maraeo@gmail.com>

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2010-05-13 19:06 [Bug 15969] New: radeon regression couldn't schedule IB on resume with 2.6.34-rc7 bugzilla-daemon
2010-05-13 19:08 ` [Bug 15969] " bugzilla-daemon
2010-05-13 20:30 ` bugzilla-daemon
2010-05-13 20:32 ` bugzilla-daemon
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2010-06-13 11:54 ` bugzilla-daemon
2010-06-13 11:54 ` bugzilla-daemon

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