[Bug 90123] New: [SNB/IVB bisected]igt/kms_pipe_crc_basic subcase bad-pipe causes WARNING: CPU: 0 PID: 4666 at drivers/gpu/drm/i915/i915_gem_execbuffer.c:1256 i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]()

Tue Apr 21 00:22:49 PDT 2015

https://bugs.freedesktop.org/show_bug.cgi?id=90123

            Bug ID: 90123
           Summary: [SNB/IVB bisected]igt/kms_pipe_crc_basic subcase
                    bad-pipe causes WARNING: CPU: 0 PID: 4666 at
                    drivers/gpu/drm/i915/i915_gem_execbuffer.c:1256
                    i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]()
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: yex.tian at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115241
  --> https://bugs.freedesktop.org/attachment.cgi?id=115241&action=edit
dmesg info

==System Environment==       
-----------------------------------------------------
Regression: Yes
Non-working platforms: SNB IVB

==Kernel==
--------------------------------------------------
commit b9fe357740009b89d4bac30b297bfe9808957e6a
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Mon Apr 20 10:28:37 2015 -0700

    drm-intel-nightly: 2015y-04m-20d-17h-28m-16s UTC integration manifest


==Bug detailed description==
--------------------------------------------------
igt/kms_pipe_crc_basic subcase bad-pipe causes WARNING: CPU: 0 PID: 4666 at
drivers/gpu/drm/i915/i915_gem_execbuffer.c:1256
i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]()

By bisected, shows the first bad commit is 5c5f645
commit 5c5f645773b6d147bf68c350674dc3ef4f8de83d
Author:     Daniel Vetter <daniel.vetter at ffwll.ch>
AuthorDate: Tue Apr 14 17:35:14 2015 +0200
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Mon Apr 20 08:55:19 2015 -0700

    drm/i915: Unify aliasing ppgtt handling

    With the dynamic pagetable alloc code aliasing ppgtt special-cases
    where again mixed in all over the place with the low-level init code.

    Extract the va preallocation and clearing again into the common code
    where aliasing ppgtt gets set up.

    Note that with this we don't set the size of the aliasing ppgtt to the
    size of the parent ggtt address space. Which isn't required at all
    since except for the ppgtt setup/cleanup code no one ever looks at
    this.

    Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>


--output dmesg info--
---------------------------------------------------------------------------
[  119.963715] ------------[ cut here ]------------
[  119.963732] WARNING: CPU: 2 PID: 5428 at
drivers/gpu/drm/i915/i915_gem_execbuffer.c:1256
i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]()
[  119.963734] render ring didn't clear reload
[  119.963735] Modules linked in: ipv6 dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev snd_hda_codec_realtek snd_hda_codec_generic
firewire_ohci serio_raw i2c_i801 pcspkr joydev firewire_core crc_itu_t
snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm
lpc_ich mfd_core snd_timer snd soundcore parport_pc parport tpm_tis tpm
acpi_cpufreq i915 button video drm_kms_helper drm
[  119.963753] CPU: 2 PID: 5428 Comm: pm_rpm Tainted: G        W      
4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
[  119.963755] Hardware name:                  /DQ67SW, BIOS
SWQ6710H.86A.0060.2011.1220.1805 12/20/2011
[  119.963756]  0000000000000000 0000000000000009 ffffffff81795847
ffff8802300fbbb8
[  119.963759]  ffffffff8103bd5a ffff880234ac60e8 ffffffffa0096618
ffff880234ac6000
[  119.963761]  ffff88022f701c98 0000000000000000 ffff8802300fbe18
ffff88022f700000
[  119.963763] Call Trace:
[  119.963768]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
[  119.963772]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
[  119.963782]  [<ffffffffa0096618>] ?
i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]
[  119.963791]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
[  119.963801]  [<ffffffffa0096618>] ?
i915_gem_ringbuffer_submission+0x2a9/0x86f [i915]
[  119.963811]  [<ffffffffa0095ff0>] ?
i915_gem_do_execbuffer.isra.13+0xca6/0xd88 [i915]
[  119.963823]  [<ffffffffa00a138a>] ? i915_gem_pwrite_ioctl+0x75a/0x7e0 [i915]
[  119.963827]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
[  119.963836]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
[  119.963843]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
[  119.963852]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
[  119.963855]  [<ffffffff811207a8>] ? dput+0x24/0x1aa
[  119.963858]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
[  119.963861]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
[  119.963863]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
[  119.963866]  [<ffffffff8179b329>] ? int_signal+0x12/0x17
[  119.963868]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
[  119.963870] ---[ end trace e93159cda1ab216a ]---

==Reproduce steps==
----------------------------

1, ./kms_pipe_crc_basic --run-subtest bad-pipe

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