[Bug 94101] System hangs for seconds repeatedly and sometimes crashes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94101

--- Comment #9 from Daniel Rowe <daniel.rowe at fathom13.com> ---
I am also seeing this on Fedora 23 on same hardware. I am seeing this on kernel
4.4.9 and testing kernel 4.5.5.

Also using DP and have a 4K monitor attached.

drm] stuck on render ring
[  174.864441] [drm] GPU HANG: ecode 9:0:0x87f99ff9, in gnome-shell [1856],
reason: Ring hung, action: reset
[  174.864445] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  174.864447] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  174.864449] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  174.864451] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  174.864453] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  174.864503] ------------[ cut here ]------------
[  174.864587] WARNING: CPU: 2 PID: 1092 at
drivers/gpu/drm/i915/intel_display.c:11440
intel_mmio_flip_work_func+0x456/0x460 [i915]()
[  174.864593] WARN_ON(__i915_wait_request(mmio_flip->req,
mmio_flip->crtc->reset_counter, false, NULL, &mmio_flip->i915->rps.mmioflips))
[  174.864599] Modules linked in:
[  174.864603]  rfcomm fuse cmac xt_CHECKSUM ipt_MASQUERADE
nf_nat_masquerade_ipv4 tun rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache
nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT
nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_broute bridge ebtable_nat
ebtable_filter ebtables ip6table_mangle ip6table_nat nf_conntrack_ipv6
nf_defrag_ipv6 nf_nat_ipv6 ip6table_security ip6table_raw ip6table_filter
ip6_tables iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4
nf_nat_ipv4 nf_nat nf_conntrack iptable_security iptable_raw bnep
snd_hda_codec_hdmi arc4 snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc
snd_soc_sst_dsp snd_hda_ext_core snd_hda_codec_realtek snd_soc_sst_match
snd_hda_codec_generic snd_soc_core intel_rapl snd_compress x86_pkg_temp_thermal
coretemp snd_pcm_dmaengine
[  174.864672]  ac97_bus kvm_intel snd_hda_intel snd_hda_codec snd_hda_core
snd_hwdep kvm snd_seq iwlmvm irqbypass crct10dif_pclmul crc32_pclmul
snd_seq_device snd_pcm mac80211 ghash_clmulni_intel vfat fat iwlwifi joydev
hci_uart btqca btusb cfg80211 btrtl btbcm btintel bluetooth snd_timer snd
soundcore mei_me i2c_i801 idma64 ir_lirc_codec lirc_dev mei intel_lpss_pci
shpchp rfkill rc_rc6_mce ite_cir pinctrl_sunrisepoint rc_core intel_lpss_acpi
pinctrl_intel intel_lpss acpi_pad acpi_als tpm_tis kfifo_buf industrialio tpm
nfsd auth_rpcgss nfs_acl lockd grace sunrpc 8021q garp stp llc mrp btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper e1000e crc32c_intel drm sdhci_pci
sdhci mmc_core ptp nvme pps_core video i2c_hid fjes
[  174.864769] CPU: 2 PID: 1092 Comm: kworker/2:3 Not tainted
4.5.5-201.fc23.x86_64 #1
[  174.864772] Hardware name:                  /NUC6i5SYB, BIOS
SYSKLi35.86A.0044.2016.0512.1734 05/12/2016
[  174.864837] Workqueue: events intel_mmio_flip_work_func [i915]
[  174.864842]  0000000000000286 000000000c1634c0 ffff880262993d18
ffffffff813d08de
[  174.864849]  ffff880262993d60 ffffffffa024de60 ffff880262993d50
ffffffff810a5e22
[  174.864856]  ffff880232ac5f40 ffff88027ed165c0 ffff880272cd8480
0000000000000080
[  174.864862] Call Trace:
[  174.864872]  [<ffffffff813d08de>] dump_stack+0x63/0x85
[  174.864881]  [<ffffffff810a5e22>] warn_slowpath_common+0x82/0xc0
[  174.864887]  [<ffffffff810a5ebc>] warn_slowpath_fmt+0x5c/0x80
[  174.864947]  [<ffffffffa01e5706>] intel_mmio_flip_work_func+0x456/0x460
[i915]
[  174.864955]  [<ffffffff810be5ec>] process_one_work+0x15c/0x430
[  174.864962]  [<ffffffff810be90e>] worker_thread+0x4e/0x480
[  174.864969]  [<ffffffff817c488c>] ? __schedule+0x3ac/0xa00
[  174.864975]  [<ffffffff810be8c0>] ? process_one_work+0x430/0x430
[  174.864981]  [<ffffffff810be8c0>] ? process_one_work+0x430/0x430
[  174.864987]  [<ffffffff810c4728>] kthread+0xd8/0xf0
[  174.864993]  [<ffffffff810c4650>] ? kthread_worker_fn+0x170/0x170
[  174.865000]  [<ffffffff817c944f>] ret_from_fork+0x3f/0x70
[  174.865005]  [<ffffffff810c4650>] ? kthread_worker_fn+0x170/0x170
[  174.865021] ---[ end trace 14670e0083b39c47 ]---
[  174.867526] drm/i915: Resetting chip after gpu hang
[  176.868354] [drm] RC6 on

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