[Bug 104172] New: [BAT] igt at kms_pipe_crc_basic@suspend-read-crc-pipe-a - dmesg-warn - Unclaimed read from register 0x71240 -WARNING: CPU: 7 PID: 3246 at drivers/gpu/drm/i915/intel_uncore.c:986 __unclaimed_reg_debug+0x3b/0x50 [i915]

Fri Dec 8 11:56:42 UTC 2017

https://bugs.freedesktop.org/show_bug.cgi?id=104172

            Bug ID: 104172
           Summary: [BAT] igt at kms_pipe_crc_basic@suspend-read-crc-pipe-a -
                    dmesg-warn - Unclaimed read from register 0x71240
                    -WARNING: CPU: 7 PID: 3246 at
                    drivers/gpu/drm/i915/intel_uncore.c:986
                    __unclaimed_reg_debug+0x3b/0x50 [i915]
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: marta.lofstedt at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3480/fi-kbl-r/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a.html

<6>[  464.323758] serial 00:06: activated
<4>[  464.323772] ------------[ cut here ]------------
<4>[  464.323784] Unclaimed read from register 0x71240
<4>[  464.323814] WARNING: CPU: 7 PID: 3246 at
drivers/gpu/drm/i915/intel_uncore.c:986 __unclaimed_reg_debug+0x3b/0x50 [i915]
<4>[  464.323815] Modules linked in: vgem snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic asix usbnet mii i915
x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul
snd_hda_intel ghash_clmulni_intel snd_hda_codec snd_hwdep e1000e snd_hda_core
snd_pcm mei_me ptp mei pps_core prime_numbers pinctrl_sunrisepoint
pinctrl_intel
<4>[  464.323845] CPU: 7 PID: 3246 Comm: kworker/u16:39 Tainted: G     U       
   4.15.0-rc2-CI-CI_DRM_3480+ #1
<4>[  464.323846] Hardware name: Intel Corporation Kabylake Client
platform/Kabylake R DDR4 RVP, BIOS KBLSE2R1.R00.X078.P02.1703030515 03/03/2017
<4>[  464.323849] Workqueue: events_unbound async_run_entry_fn
<4>[  464.323851] task: 000000000b2371bc task.stack: 00000000aac1762f
<4>[  464.323868] RIP: 0010:__unclaimed_reg_debug+0x3b/0x50 [i915]
<4>[  464.323869] RSP: 0018:ffffc900008bfb10 EFLAGS: 00010086
<4>[  464.323871] RAX: 0000000000000024 RBX: 0000000000000000 RCX:
0000000000000002
<4>[  464.323872] RDX: 0000000000000000 RSI: ffffffff81d057c9 RDI:
ffffffff81cb6b16
<4>[  464.323873] RBP: 0000000000071240 R08: 0000000000000000 R09:
0000000000000001
<4>[  464.323874] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000001
<4>[  464.323875] R13: ffff8802ab100ca8 R14: 0000000000000000 R15:
0000000000000206
<4>[  464.323877] FS:  0000000000000000(0000) GS:ffff8802bedc0000(0000)
knlGS:0000000000000000
<4>[  464.323878] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  464.323879] CR2: 00005643ea472028 CR3: 0000000003e10005 CR4:
00000000003606e0
<4>[  464.323880] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
<4>[  464.323881] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
<4>[  464.323882] Call Trace:
<4>[  464.323900]  fwtable_read32+0x214/0x290 [i915]
<4>[  464.323915]  skl_pipe_wm_get_hw_state+0xc9/0x1e0 [i915]
<4>[  464.323932]  skl_wm_get_hw_state+0x4d/0xd0 [i915]
<4>[  464.323952]  intel_modeset_setup_hw_state+0xee8/0xf80 [i915]
<4>[  464.323959]  ? pci_pm_suspend_late+0x30/0x30
<4>[  464.323976]  __intel_display_resume+0x19/0xc0 [i915]
<4>[  464.323994]  intel_display_resume+0xbc/0xf0 [i915]
<4>[  464.323997]  ? __mutex_unlock_slowpath+0x38/0x270
<4>[  464.324014]  i915_pm_restore+0xc4/0x140 [i915]
<4>[  464.324017]  dpm_run_callback+0x5f/0x310
<4>[  464.324021]  device_resume+0xa3/0x1b0
<4>[  464.324025]  ? dpm_watchdog_set+0x60/0x60
<4>[  464.324030]  async_resume+0x14/0x40
<4>[  464.324032]  async_run_entry_fn+0x2e/0x160
<4>[  464.324035]  process_one_work+0x227/0x650
<4>[  464.324041]  worker_thread+0x48/0x3a0
<4>[  464.324046]  kthread+0x173/0x1b0
<4>[  464.324048]  ? process_one_work+0x650/0x650
<4>[  464.324049]  ? _kthread_create_on_node+0x30/0x30
<4>[  464.324052]  ret_from_fork+0x24/0x30
<4>[  464.324060] Code: 3c 01 75 30 84 db 75 2c 45 84 e4 48 c7 c0 3a d1 2b a0
48 c7 c6 30 d1 2b a0 48 0f 44 f0 89 ea 48 c7 c7 43 d1 2b a0 e8 f5 93 e7 e0 <0f>
ff 83 2d 3c 78 16 00 01 5b 5d 41 5c c3 0f 1f 80 00 00 00 00 
<4>[  464.324119] ---[ end trace 5d435f000ce4dd4e ]---

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