[Bug 67236] New: [HSW Bisected]igt/kms_flip/absolute-wf_vblank causes system hang with VGA+HDMI

Tue Jul 23 20:48:23 PDT 2013

https://bugs.freedesktop.org/show_bug.cgi?id=67236

          Priority: high
            Bug ID: 67236
                CC: rodrigo.vivi at gmail.com, xunx.fang at intel.com,
                    yangweix.shui at intel.com
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW Bisected]igt/kms_flip/absolute-wf_vblank causes
                    system hang with VGA+HDMI
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 82889
  --> https://bugs.freedesktop.org/attachment.cgi?id=82889&action=edit
dmesg

System Environment:
--------------------------
Platform:       Haswell
Kernel:  (drm-intel-nightly)1a7fc2d3e919e151a2e87dd6c98f20eccf95e041

Bug detailed description:
-----------------------------
It causes system hang with VGA_HDMI on Haswell. It happens on drm-intel-nightly
and drm-intel-next-queued kernel.It doesn't happen on drm-intel-fixes kernel.

Bisect shows:4906557eb37b7fef84fad4304acef6dedf919880 is the first bad commit.
commit 4906557eb37b7fef84fad4304acef6dedf919880
Author:     Rodrigo Vivi <rodrigo.vivi at gmail.com>
AuthorDate: Thu Jul 11 18:45:05 2013 -0300
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Thu Jul 18 10:34:54 2013 +0200

    drm/i915: Hook PSR functionality

    PSR must be enabled after transcoder and port are running.
    And it is only available for HSW.

    v2: move enable/disable to intel_ddi
    v3: The spec suggests PSR should be disabled even before backlight (by
pzano
    v4: also disabling and enabling whenever panel is disabled/enabled.
    v5: make it last patch to avoid breaking whenever bisecting. So calling for
        update and force exit came to this patch along with enable/disable
calls
    v6: Remove unused and unecessary psr_enable/disable calls, as notice by
Paul

    CC: Paulo Zanoni <paulo.r.zanoni at intel.com>
    Signed-off-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
    [danvet: Drop the psr exit code in the busy ioctl since I didn't merge
    that part of the infrastructure yet - it needs more thought.]
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

[  472.767289] Call Trace:
[  472.767324]  [<ffffffffa009b496>] ? intel_edp_psr_update+0x3d/0x78 [i915]
[  472.767392]  [<ffffffffa008c22d>] ? intel_pipe_set_base+0x218/0x295 [i915]
[  472.767459]  [<ffffffffa008d89c>] ? haswell_crtc_mode_set+0x2b2/0x2da [i915]
[  472.770288]  [<ffffffffa008f610>] ? __intel_set_mode+0xd30/0xf4e [i915]
[  472.773117]  [<ffffffff810334b1>] ? wake_up_klogd+0x2d/0x31
[  472.775932]  [<ffffffffa00906db>] ? intel_set_mode+0xd/0x27 [i915]
[  472.778734]  [<ffffffffa0090cf1>] ? intel_crtc_set_config+0x5fc/0x803 [i915]
[  472.781512]  [<ffffffffa0018d36>] ? drm_mode_set_config_internal+0x44/0xac
[drm]
[  472.784260]  [<ffffffffa001a922>] ? drm_mode_setcrtc+0x423/0x4c8 [drm]
[  472.786987]  [<ffffffffa000e3c7>] ? drm_ioctl+0x28b/0x3ab [drm]
[  472.789706]  [<ffffffffa001a4ff>] ? drm_mode_setplane+0x317/0x317 [drm]
[  472.792442]  [<ffffffff810e494e>] ? vfs_ioctl+0x1e/0x31
[  472.795175]  [<ffffffff810e5124>] ? do_vfs_ioctl+0x3ad/0x3ef
[  472.797919]  [<ffffffff810e51b4>] ? SyS_ioctl+0x4e/0x7e
[  472.800665]  [<ffffffff816f7e12>] ? system_call_fastpath+0x16/0x1b
[  472.803419] Code: f7 ff b2 01 59 5b 5d 41 5c 41 5d 41 5e 88 d0 41 5f c3 55
53 41 52 48 8b 87 40 ff ff ff 48 8b af 78 ff ff ff 48 8b 98 30 03 00 00 <48> 8b
45 50 48 8b 4b 10 48 8b 90 88 00 00 00 f6 41 07 10 75 30
[  472.806533] RIP  [<ffffffffa0098268>]
intel_edp_psr_match_conditions+0x19/0x25d [i915]
[  472.809487]  RSP <ffff8801492fda38>
[  472.812416] CR2: 0000000000000050

output:
Using monotonic timestamps
running testcase: absolute-wf_vblank
Beginning absolute-wf_vblank on crtc 3, connector 10
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
..............................................................
absolute-wf_vblank on crtc 3, connector 10: PASSED

Beginning absolute-wf_vblank on crtc 5, connector 10
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
..............................................................
absolute-wf_vblank on crtc 5, connector 10: PASSED

Beginning absolute-wf_vblank on crtc 7, connector 10
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
.............................................................
absolute-wf_vblank on crtc 7, connector 10: PASSED

Beginning absolute-wf_vblank on crtc 3, connector 22
  1920x1200 60 1920 1968 2000 2080 1200 1203 1209 1235 0x9 0x48 154000

Reproduce steps:
----------------------------
1. ./kms_flip --run-subtest absolute-wf_vblank

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