[Bug 98995] New: [BDW] : __unclaimed_reg_debug kern oops

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98995

            Bug ID: 98995
           Summary: [BDW] :  __unclaimed_reg_debug kern oops
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: funfunctor at folklore1984.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

No idea where this came from?

I only just filed: https://bugs.freedesktop.org/show_bug.cgi?id=98994
so I have no idea if its related or I am just getting showered in bugs today??
:<

[13144.528389] ------------[ cut here ]------------
[13144.528420] WARNING: CPU: 2 PID: 0 at
drivers/gpu/drm/i915/intel_uncore.c:802 __unclaimed_reg_debug+0x4f/0x60 [i915]
[13144.528421] Unclaimed read from register 0x44324
[13144.528422] Modules linked in: rfcomm fuse ccm xt_CHECKSUM tun
nfnetlink_queue ipt_MASQUERADE nf_nat_masquerade_ipv4 ip6t_rpfilter ip6t_REJECT
nf_reject_ipv6 ip_set nfnetlink xt_addrtype xt_conntrack ebtable_nat
br_netfilter ebtable_broute bridge stp llc ip6table_raw ip6table_security
ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle
iptable_raw iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4
nf_nat_ipv4 nf_nat iptable_mangle ebtable_filter ebtables ip6table_filter
ip6_tables cmac bnep intel_rapl x86_pkg_temp_thermal coretemp arc4 iwlmvm
uvcvideo kvm_intel mac80211 videobuf2_vmalloc videobuf2_memops kvm
videobuf2_v4l2 videobuf2_core videodev btusb btrtl btbcm btintel bluetooth
mei_wdt irqbypass intel_cstate iTCO_wdt iTCO_vendor_support intel_uncore media
iwlwifi
[13144.528454]  snd_hda_codec_realtek snd_hda_codec_hdmi intel_rapl_perf
rtsx_pci_ms cfg80211 snd_hda_codec_generic memstick joydev snd_hda_intel wmi
snd_hda_codec snd_hda_core thinkpad_acpi snd_hwdep snd_seq snd_seq_device
snd_pcm rfkill mei_me snd_timer snd mei i2c_i801 i2c_smbus intel_pch_thermal
soundcore lpc_ich tpm_tis shpchp tpm_tis_core tpm nfsd nfs_acl lockd
auth_rpcgss grace binfmt_misc sunrpc nf_conntrack_pptp nf_conntrack_proto_gre
nf_conntrack btrfs xor raid6_pq dm_crypt i915 rtsx_pci_sdmmc mmc_core
crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper
ghash_clmulni_intel serio_raw e1000e drm rtsx_pci ptp pps_core fjes video
[13144.528490] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.8.10-300.fc25.x86_64
#1
[13144.528491] Hardware name: LENOVO 20BV0020AU/20BV0020AU, BIOS JBET61WW (1.25
) 07/13/2016
[13144.528493]  0000000000000086 2517aba095912c79 ffff9ed02dc83c78
ffffffffaf3e5ead
[13144.528496]  ffff9ed02dc83cc8 0000000000000000 ffff9ed02dc83cb8
ffffffffaf0a0e8b
[13144.528500]  0000032200000001 0000000000000000 0000000000044324
0000000000000001
[13144.528503] Call Trace:
[13144.528504]  <IRQ>  [<ffffffffaf3e5ead>] dump_stack+0x63/0x86
[13144.528511]  [<ffffffffaf0a0e8b>] __warn+0xcb/0xf0
[13144.528514]  [<ffffffffaf0a0f0f>] warn_slowpath_fmt+0x5f/0x80
[13144.528516]  [<ffffffffaf3fbc08>] ? find_next_bit+0x18/0x20
[13144.528518]  [<ffffffffaf3e5bfd>] ? cpumask_next_and+0x2d/0x50
[13144.528544]  [<ffffffffc034127f>] __unclaimed_reg_debug+0x4f/0x60 [i915]
[13144.528561]  [<ffffffffc0344705>] gen6_read32+0x1b5/0x230 [i915]
[13144.528572]  [<ffffffffc02ea2d6>] snb_update_pm_irq+0x96/0xd0 [i915]
[13144.528589]  [<ffffffffc02ee809>] gen6_disable_pm_irq+0x19/0x40 [i915]
[13144.528602]  [<ffffffffc02ee899>] gen6_rps_irq_handler+0x69/0xd0 [i915]
[13144.528613]  [<ffffffffc02ef423>] gen8_gt_irq_handler+0xc3/0x1f0 [i915]
[13144.528625]  [<ffffffffc02ef602>] gen8_irq_handler+0xb2/0x670 [i915]
[13144.528627]  [<ffffffffaf0df2a5>] ? rebalance_domains+0x125/0x2b0
[13144.528629]  [<ffffffffaf0fd56e>] __handle_irq_event_percpu+0x7e/0x190
[13144.528630]  [<ffffffffaf0fd6b2>] handle_irq_event_percpu+0x32/0x80
[13144.528631]  [<ffffffffaf0fd72c>] handle_irq_event+0x2c/0x50
[13144.528633]  [<ffffffffaf100eaf>] handle_edge_irq+0x6f/0x130
[13144.528635]  [<ffffffffaf028df3>] handle_irq+0x73/0x120
[13144.528637]  [<ffffffffaf0c1c5a>] ? atomic_notifier_call_chain+0x1a/0x20
[13144.528639]  [<ffffffffaf8053eb>] do_IRQ+0x4b/0xd0
[13144.528641]  [<ffffffffaf80328c>] common_interrupt+0x8c/0x8c
[13144.528641]  <EOI>  [<ffffffffaf6893f2>] ? cpuidle_enter_state+0x122/0x2c0
[13144.528645]  [<ffffffffaf6895c7>] cpuidle_enter+0x17/0x20
[13144.528647]  [<ffffffffaf0e534a>] call_cpuidle+0x2a/0x50
[13144.528649]  [<ffffffffaf0e5730>] cpu_startup_entry+0x2a0/0x350
[13144.528651]  [<ffffffffaf04a564>] start_secondary+0x154/0x190
[13144.528652] ---[ end trace 489ba50227f8318a ]---

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