[Bug 78283] New: [BDW Regression]igt/gem_cpu_reloc stops at 1% and Call Trace in dmesg

Mon May 5 00:45:22 PDT 2014

https://bugs.freedesktop.org/show_bug.cgi?id=78283

          Priority: high
            Bug ID: 78283
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Regression]igt/gem_cpu_reloc stops at 1% and Call
                    Trace in dmesg
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 98453
  --> https://bugs.freedesktop.org/attachment.cgi?id=98453&action=edit
dmesg

*System Environment:
--------------------------
Platform: BDW
kernel: 
-nightly: 08ce6614d07dd1e426109672a5e323317c8d6ec7(fails)
-queued: e5c03ca362819ba8ffbe5674340b61b9cd75de8f (fails)
-fixes: 9bbfd20abe5025adbb0ac75160bd2e41158a9e83 (works)


 *Bug detailed description:
-----------------------------
igt/gem_cpu_reloc stops at 1% and Call Trace in dmesg

It's a regression bug
good commit: c79057922ed6c2c6df1214e6ab4414fea1b23db2
bad commit: e5c03ca362819ba8ffbe5674340b61b9cd75de8f 
We will bisect it later

Dmesg shows:
[   27.313507] Oops: 0002 [#1] SMP
[   27.313530] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev pcspkr lpc_ich mfd_core snd_hda_intel
snd_hda_controller i2c_i801 snd_hda_codec snd_hwdep snd_pcm snd_timer snd
soundcore battery parport_pc parport ac acpi_cpufreq i915 video button
drm_kms_helper drm
[   27.313730] CPU: 0 PID: 4331 Comm: gem_cpu_reloc Not tainted
3.15.0-rc2_drm-intel-nightly_08ce66_20140504+ #2286
[   27.313786] task: ffff88014483f620 ti: ffff880149ace000 task.ti:
ffff880149ace000
[   27.313826] RIP: 0010:[<ffffffff812e6723>]  [<ffffffff812e6723>]
iowrite32+0xe/0x28
[   27.313872] RSP: 0018:ffff880149acfc00  EFLAGS: 00010292
[   27.313902] RAX: 0000000011000001 RBX: ffff880145629780 RCX:
000000000001ffe0
[   27.313940] RDX: 000000000001fff0 RSI: ffffc900110a0000 RDI:
ffffc900110a0000
[   27.313978] RBP: 0000000000000002 R08: ffff880147558578 R09:
ffff880147558578
[   27.314016] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff880145628000
[   27.314054] R13: 0000000000000000 R14: 0000000000022040 R15:
ffff8801492f4de0
[   27.314093] FS:  00007fa1904238c0(0000) GS:ffff88014f400000(0000)
knlGS:0000000000000000
[   27.314136] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.314167] CR2: ffffc900110a0000 CR3: 000000014833f000 CR4:
00000000003407f0
[   27.314205] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[   27.314243] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[   27.314281] Stack:
[   27.314294]  ffffffffa008b5ea 000000000081c000 0000000000000004
ffff880145629780
[   27.314342]  ffff880145628000 ffff88000242be00 0000000000000000
ffff880145629780
[   27.314389]  ffffffffa008a9a8 ffff88000242be00 ffffffffa008d3a1
0000000000000000
[   27.314437] Call Trace:
[   27.314467]  [<ffffffffa008b5ea>] ? gen6_signal+0x7b/0x10c [i915]
[   27.314511]  [<ffffffffa008a9a8>] ? gen6_add_request+0x13/0x88 [i915]
[   27.314556]  [<ffffffffa008d3a1>] ? intel_ring_flush_all_caches+0x1c/0x29
[i915]
[   27.314605]  [<ffffffffa007a17f>] ? __i915_add_request+0x1c4/0x1e3 [i915]
[   27.314650]  [<ffffffffa0075eb1>] ?
i915_gem_do_execbuffer.isra.16+0xff1/0x1142 [i915]
[   27.314694]  [<ffffffff812e3c23>] ? __sg_page_iter_next+0x2b/0x58
[   27.314736]  [<ffffffffa00764d0>] ? i915_gem_execbuffer2+0x177/0x1fb [i915]
[   27.314779]  [<ffffffffa0002f22>] ? drm_ioctl+0x25c/0x3ad [drm]
[   27.314819]  [<ffffffffa0076359>] ? i915_gem_execbuffer+0x357/0x357 [i915]
[   27.314859]  [<ffffffff81725de3>] ? __schedule+0x638/0x77e
[   27.314893]  [<ffffffff810ee9b3>] ? do_vfs_ioctl+0x3ec/0x435
[   27.314926]  [<ffffffff810eea45>] ? SyS_ioctl+0x49/0x78
[   27.314958]  [<ffffffff8172d622>] ? system_call_fastpath+0x16/0x1b
[   27.314991] Code: 48 89 f7 76 05 e9 21 5c d4 ff 48 81 fe 00 00 01 00 77 09
48 c7 c6 15 9f 9b 81 eb aa c3 48 81 fe ff ff 03 00 89 f8 48 89 f7 76 03 <89> 06
c3 48 81 fe 00 00 01 00 76 05 0f b7 d6 ef c3 48 c7 c6 49
[   27.315227] RIP  [<ffffffff812e6723>] iowrite32+0xe/0x28
[   27.315261]  RSP <ffff880149acfc00>
[   27.315281] CR2: ffffc900110a0000
[   27.315301] ---[ end trace de5b068c0f112569 ]---


Output:
IGT-Version: 1.6-gc864279 (x86_64) (Linux:
3.15.0-rc2_drm-intel-nightly_08ce66_20140504+ x86_64)
gem_cpu_reloc:   1%


 *Reproduce steps:
---------------------------- 
1. ./gem_cpu_reloc

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