[Bug 78274] New: [BDW Regression]BUG: unable to handle kernel paging request at ffffc900110a0000

Sun May 4 23:14:22 PDT 2014

https://bugs.freedesktop.org/show_bug.cgi?id=78274

          Priority: high
            Bug ID: 78274
                CC: intel-gfx-bugs at lists.freedesktop.org,
                    jinxianx.guo at intel.com
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Regression]BUG: unable to handle kernel paging
                    request at ffffc900110a0000
        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 98446
  --> https://bugs.freedesktop.org/attachment.cgi?id=98446&action=edit
dmesg

system Environment:
--------------------------
Platform: Broadwell
Kernel:(drm-intel-nightly)08ce6614d07dd1e426109672a5e323317c8d6ec7

Bug detailed description:
-----------------------------
Open google-chrome browser, reports BUG: unable to handle kernel paging request
at ffffc900110a0000.
It happens on Broadwell with -nightly and -queued branch.

The latest known good commit: c79057922ed6c2c6df1214e6ab4414fea1b23db2
The latest known bad commit: e5c03ca362819ba8ffbe5674340b61b9cd75de8f

dmesg:
[   38.784886] BUG: unable to handle kernel paging request at ffffc900110a0000
[   38.784938] IP: [<ffffffff812e6723>] iowrite32+0xe/0x28
[   38.784976] PGD 14a80e067 PUD 14a80f067 PMD 149b68067 PTE 0
[   38.785017] Oops: 0002 [#1] SMP
[   38.785041] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support ppdev pcspkr i2c_i801
snd_hda_intel snd_hda_controller snd_hda_codec lpc_ich snd_hwdep mfd_core
snd_pcm snd_timer snd soundcore battery parport_pc parport ac acpi_cpufreq i915
video button drm_kms_helper drm
[   38.785298] CPU: 0 PID: 4171 Comm: X Not tainted
3.15.0-rc2_drm-intel-nightly_08ce66_20140505+ #2318
[   38.785353] task: ffff880002221f80 ti: ffff8800a633c000 task.ti:
ffff8800a633c000
[   38.785397] RIP: 0010:[<ffffffff812e6723>]  [<ffffffff812e6723>]
iowrite32+0xe/0x28
[   38.785446] RSP: 0018:ffff8800a633dc00  EFLAGS: 00010292
[   38.785478] RAX: 00000000fffff40c RBX: ffff880002da5780 RCX:
000000000001ffd8
[   38.785520] RDX: 000000000001ffe8 RSI: ffffc900110a0000 RDI:
ffffc900110a0000
[   38.785561] RBP: 0000000000000002 R08: 00000000000144c0 R09:
ffff8800020e7d78
[   38.785603] R10: ffff8800020e7d78 R11: 00007f597a566106 R12:
ffff880002da4000
[   38.785644] R13: 0000000000000000 R14: 0000000000022040 R15:
ffff8800a6b62d80
[   38.785691] FS:  00007f597d6558c0(0000) GS:ffff88014f400000(0000)
knlGS:0000000000000000
[   38.785738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   38.785771] CR2: ffffc900110a0000 CR3: 00000000a6301000 CR4:
00000000003407f0
[   38.785812] Stack:
[   38.785825]  ffffffffa008b646 000000000081c000 0000000000000004
ffff880002da5780
[   38.785874]  ffff880002da4000 ffff880002315e00 0000000000000000
ffff880002da5780
[   38.785923]  ffffffffa008a9a8 ffff880002315e00 ffffffffa008d3a1
0000000000000000
[   38.785973] Call Trace:
[   38.786006]  [<ffffffffa008b646>] ? gen6_signal+0xd7/0x10c [i915]
[   38.786053]  [<ffffffffa008a9a8>] ? gen6_add_request+0x13/0x88 [i915]
[   38.786101]  [<ffffffffa008d3a1>] ? intel_ring_flush_all_caches+0x1c/0x29
[i915]
[   38.786155]  [<ffffffffa007a17f>] ? __i915_add_request+0x1c4/0x1e3 [i915]
[   38.786204]  [<ffffffffa0075eb1>] ?
i915_gem_do_execbuffer.isra.16+0xff1/0x1142 [i915]
[   38.786253]  [<ffffffff812e3c23>] ? __sg_page_iter_next+0x2b/0x58
[   38.786298]  [<ffffffffa00764d0>] ? i915_gem_execbuffer2+0x177/0x1fb [i915]
[   38.786345]  [<ffffffffa0002f22>] ? drm_ioctl+0x25c/0x3ad [drm]
[   38.786388]  [<ffffffffa0076359>] ? i915_gem_execbuffer+0x357/0x357 [i915]
[   38.786431]  [<ffffffff8104d453>] ? enqueue_hrtimer+0x15/0x37
[   38.786468]  [<ffffffff8104da02>] ? __hrtimer_start_range_ns+0x21a/0x238
[   38.786512]  [<ffffffff810ee9b3>] ? do_vfs_ioctl+0x3ec/0x435
[   38.786548]  [<ffffffff810eea45>] ? SyS_ioctl+0x49/0x78
[   38.786582]  [<ffffffff81092d69>] ? __audit_syscall_exit+0x209/0x225
[   38.786623]  [<ffffffff8172d622>] ? system_call_fastpath+0x16/0x1b
[   38.786659] 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
[   38.786873] RIP  [<ffffffff812e6723>] iowrite32+0xe/0x28
[   38.786909]  RSP <ffff8800a633dc00>
[   38.786930] CR2: ffffc900110a0000
[   38.801814] ---[ end trace b37fc0904a9ee0eb ]---

Reproduce steps:
----------------------------
1. xinit
2. open google-chrome browser

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