[Bug 93074] New: GPU hang then corruption

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93074

            Bug ID: 93074
           Summary: GPU hang then corruption
           Product: DRI
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: iainw at sogetthis.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 120043
  --> https://bugs.freedesktop.org/attachment.cgi?id=120043&action=edit
GPU crash dump from /sys/class/drm/card0/error

I've just experienced another momentary blankness followed by a scrambled
screen.  Forcing windows to redraw often helps restore order, but scrolling vim
windows and things often brings back the scrambled text, and highlighting
articles in claws-mail also scrambles them across the screen (including outside
the claws-mail window).  My web browser seems largely immune to scrambling
problems, once I've refreshed the initially scrambled window.

This happens on average once a week, and usually as I'm just winding up work,
but I've not identified a specific time yet.  It's been happening for at least
a few months now, and even after a number of xorg and mesa updates, it's no
better or worse than it first was.

Here's my dmesg:

[25644.997531] [drm] stuck on render ring
[25645.004709] [drm] GPU HANG: ecode 3:0:0x6affbfc1, in Xorg [295], reason:
Ring hung, action: reset
[25645.004720] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[25645.004725] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[25645.004730] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[25645.004735] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[25645.004740] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[25645.004848] ------------[ cut here ]------------
[25645.004912] WARNING: CPU: 0 PID: 3846 at
drivers/gpu/drm/i915/intel_display.c:3291
intel_crtc_wait_for_pending_flips+0x16c/0x200 [i915]()
[25645.004918] WARN_ON(ret)
[25645.004923] Modules linked in:
[25645.004929]  sha256_generic hmac drbg ansi_cprng ctr ccm joydev mousedev
iTCO_wdt iTCO_vendor_support uvcvideo videobuf2_vmalloc videobuf2_memops arc4
videobuf2_core v4l2_common videodev rt2800pci rt2800mmio media rt2800lib
coretemp evdev uas rt2x00pci input_leds rt2x00mmio mac_hid rt2x00lib pcspkr
serio_raw psmouse i915 mac80211 snd_hda_codec_realtek snd_hda_codec_generic
snd_hda_intel snd_hda_codec snd_hda_core cfg80211 i2c_i801 snd_hwdep snd_pcm
lpc_ich rng_core drm_kms_helper snd_timer eeprom_93cx6 crc_ccitt atl1e thermal
drm snd eeepc_laptop soundcore sparse_keymap battery intel_agp intel_gtt
led_class agpgart rfkill shpchp ac i2c_algo_bit video button acpi_cpufreq
processor sch_fq_codel ip_tables x_tables ext4 crc16 mbcache jbd2 ata_generic
pata_acpi sd_mod usb_storage atkbd libps2 ata_piix
[25645.005092]  libata ehci_pci uhci_hcd ehci_hcd scsi_mod usbcore usb_common
i8042 serio
[25645.005120] CPU: 0 PID: 3846 Comm: kworker/u4:1 Not tainted 4.2.5-1-ARCH #1
[25645.005128] Hardware name: ASUSTeK Computer INC. 901/901, BIOS 2103   
06/11/2009
[25645.005180] Workqueue: i915-hangcheck i915_hangcheck_elapsed [i915]
[25645.005190]  c1631967 b8222fb0 00000000 f2c97d50 c14c8e8d f2c97d90 f2c97d80
c1058457
[25645.005210]  f874675a f2c97db0 00000f06 f8751b28 00000cdb f86edb1c f86edb1c
f4fa0000
[25645.005229]  f4df1034 00000001 f2c97d9c c10584ce 00000009 f2c97d90 f874675a
f2c97db0
[25645.005247] Call Trace:
[25645.005265]  [<c14c8e8d>] dump_stack+0x48/0x69
[25645.005277]  [<c1058457>] warn_slowpath_common+0x87/0xc0
[25645.005335]  [<f86edb1c>] ? intel_crtc_wait_for_pending_flips+0x16c/0x200
[i915]
[25645.005389]  [<f86edb1c>] ? intel_crtc_wait_for_pending_flips+0x16c/0x200
[i915]
[25645.005402]  [<c10584ce>] warn_slowpath_fmt+0x3e/0x60
[25645.005456]  [<f86edb1c>] intel_crtc_wait_for_pending_flips+0x16c/0x200
[i915]
[25645.005484]  [<f82ddba4>] ? drm_modeset_lock_all_crtcs+0x84/0x90 [drm]
[25645.005540]  [<f86eeea4>] intel_crtc_disable_planes+0x34/0xf0 [i915]
[25645.005593]  [<f86ef00a>] intel_prepare_reset+0x6a/0x80 [i915]
[25645.005641]  [<f86c2877>] i915_handle_error+0x147/0x6e0 [i915]
[25645.005657]  [<c10ad457>] ? vprintk_default+0x37/0x40
[25645.005705]  [<f86c3093>] i915_hangcheck_elapsed+0x233/0x410 [i915]
[25645.005719]  [<c106da4a>] process_one_work+0x11a/0x3f0
[25645.005730]  [<c106dd57>] worker_thread+0x37/0x470
[25645.005740]  [<c106dd20>] ? process_one_work+0x3f0/0x3f0
[25645.005750]  [<c1072df6>] kthread+0xa6/0xc0
[25645.005761]  [<c1079ff5>] ? finish_task_switch+0x55/0x190
[25645.005773]  [<c14cddc1>] ret_from_kernel_thread+0x21/0x30
[25645.005783]  [<c1072d50>] ? kthread_worker_fn+0x140/0x140
[25645.005792] ---[ end trace ae2bba7cddb23771 ]---
[25645.280403] drm/i915: Resetting chip after gpu hang

My crash dump is attached.

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