[Bug 97805] New: Occasional GPU Hang: ecode 9:0:0x84dffff8, kernel: 4.7.3,

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97805

            Bug ID: 97805
           Summary: Occasional GPU Hang: ecode 9:0:0x84dffff8,  kernel:
                    4.7.3,
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: artyom.shinkaroff at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 126517
  --> https://bugs.freedesktop.org/attachment.cgi?id=126517&action=edit
Dmesg

I observe occasional GPU hangs at least since the kernel 4.7.0.  It seems that
it is not concerned with any specific rendering activities as most of the time
I work within a terminal.

The crash from the dmesg looks like this:
[  624.838943] ------------[ cut here ]------------
[  624.838956] WARNING: CPU: 1 PID: 2865 at
drivers/gpu/drm/i915/intel_pm.c:3675 skl_update_other_pipe_wm+0x148/0x150
[i915]
[  624.838957] WARN_ON(!wm_changed)
[  624.838959] Modules linked in:
[  624.838960]  snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic
uvcvideo videobuf2_vmalloc btusb btrtl videobuf2_memops btintel videobuf2_v4l2
btbcm videobuf2_core bluetooth videodev nvidia_drm(POE) nvidia_modeset(POE)
nvidia(POE) rtsx_pci_sdmmc dell_wmi dell_laptop dell_smbios dcdbas brcmfmac
x86_pkg_temp_thermal snd_hda_intel i915 intel_powerclamp snd_hda_codec brcmutil
coretemp mmc_core snd_hwdep snd_hda_core rtsx_pci mfd_core wmi dell_smo8800
efivarfs
[  624.838979] CPU: 1 PID: 2865 Comm: X Tainted: P           OE   4.7.3-gentoo
#1
[  624.838980] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.02.00
04/07/2016
[  624.838981]  0000000000000000 ffff8804a753b940 ffffffff8135f9d8
ffff8804a753b990
[  624.838983]  0000000000000000 ffff8804a753b980 ffffffff8108ca06
00000e5b00000003
[  624.838985]  ffff8804a753ba04 ffff8804a8f4a2e0 ffff8804aa1ab000
ffff8804aaa45bd0
[  624.838987] Call Trace:
[  624.838991]  [<ffffffff8135f9d8>] dump_stack+0x4d/0x65
[  624.838994]  [<ffffffff8108ca06>] __warn+0xc6/0xe0
[  624.838996]  [<ffffffff8108ca6a>] warn_slowpath_fmt+0x4a/0x50
[  624.839005]  [<ffffffffa00d58f8>] skl_update_other_pipe_wm+0x148/0x150
[i915]
[  624.839013]  [<ffffffffa00d5a5c>] skl_update_wm+0x15c/0x5f0 [i915]
[  624.839024]  [<ffffffffa0162da0>] ?
intel_ddi_enable_transcoder_func+0x170/0x240 [i915]
[  624.839032]  [<ffffffffa00d9729>] intel_update_watermarks+0x19/0x20 [i915]
[  624.839044]  [<ffffffffa0145616>] haswell_crtc_enable+0x746/0x8c0 [i915]
[  624.839057]  [<ffffffffa0140fda>] intel_atomic_commit+0x5ea/0x1460 [i915]
[  624.839059]  [<ffffffff8147c014>] ?
drm_atomic_set_crtc_for_connector+0x94/0x100
[  624.839061]  [<ffffffff8147c962>] drm_atomic_commit+0x32/0x50
[  624.839064]  [<ffffffff81459acc>] drm_atomic_helper_set_config+0x7c/0xb0
[  624.839066]  [<ffffffff8146bda0>] drm_mode_set_config_internal+0x60/0x110
[  624.839068]  [<ffffffff814704f4>] drm_mode_setcrtc+0x414/0x530
[  624.839070]  [<ffffffff814626de>] drm_ioctl+0x13e/0x510
[  624.839071]  [<ffffffff814700e0>] ? drm_mode_setplane+0x1c0/0x1c0
[  624.839074]  [<ffffffff811c5edd>] do_vfs_ioctl+0x8d/0x590
[  624.839076]  [<ffffffff81098015>] ? recalc_sigpending+0x15/0x50
[  624.839078]  [<ffffffff811c6454>] SyS_ioctl+0x74/0x80
[  624.839081]  [<ffffffff8183f5db>] entry_SYSCALL_64_fastpath+0x13/0x8f
[  624.839082] ---[ end trace ee9b30cab71e9ffd ]---

The system is: Linux temanbk 4.7.3-gentoo #1 SMP Thu Sep 8 18:02:23 BST 2016
x86_64 Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz GenuineIntel GNU/Linux

The dmesg and error.bz2 are attached.

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