[Bug 94384] New: [BAT HSW] Unclaimed register detected before writing to register 0x45110

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94384

            Bug ID: 94384
           Summary: [BAT HSW] Unclaimed register detected before writing
                    to register 0x45110
           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: mika.kuoppala at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

/opt/igt/tests/kms_pipe_crc_basic --run-subtest
nonblocking-crc-pipe-B-frame-sequence
dmesg     

[  295.562825] ------------[ cut here ]------------
[  295.562858] WARNING: CPU: 0 PID: 6858 at
drivers/gpu/drm/i915/intel_uncore.c:649 __unclaimed_reg_debug+0x7e/0x90
[i915]()
[  295.562859] Unclaimed register detected before writing to register 0x45110
[  295.562860] Modules linked in: snd_hda_intel i915 snd_hda_codec_hdmi
x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec
snd_hwdep snd_hda_core i2c_hid mei_me snd_pcm mei i2c_designware_platform
lpc_ich i2c_designware_core r8169 mii sdhci_acpi sdhci mmc_core [last unloaded:
i915]
[  295.562873] CPU: 0 PID: 6858 Comm: kms_pipe_crc_ba Tainted: G     U  W      
4.5.0-rc6-gfxbench+ #1
[  295.562874] Hardware name: GIGABYTE M4HM87P-00/M4HM87P-00, BIOS F6
12/10/2014
[  295.562875]  0000000000000000 ffff8800d914b910 ffffffff813fba95
ffff8800d914b958
[  295.562877]  ffffffffa03c3d90 ffff8800d914b948 ffffffff81078711
0000000000045110
[  295.562878]  0000000000000001 0000000000000000 000000000892d21a
0000000000000296
[  295.562880] Call Trace:
[  295.562883]  [<ffffffff813fba95>] dump_stack+0x67/0x92
[  295.562886]  [<ffffffff81078711>] warn_slowpath_common+0x81/0xc0
[  295.562887]  [<ffffffff81078797>] warn_slowpath_fmt+0x47/0x50
[  295.562901]  [<ffffffffa032ac8e>] __unclaimed_reg_debug+0x7e/0x90 [i915]
[  295.562911]  [<ffffffffa033266b>] hsw_write32+0x21b/0x270 [i915]
[  295.562920]  [<ffffffffa02dba68>] _ilk_disable_lp_wm+0x98/0xd0 [i915]
[  295.562929]  [<ffffffffa02e1074>] ilk_program_watermarks+0x4e4/0x9a0 [i915]
[  295.562938]  [<ffffffffa02e1640>] ilk_optimize_watermarks+0x110/0x130 [i915]
[  295.562950]  [<ffffffffa0350a94>] intel_atomic_commit+0x8b4/0x1610 [i915]
[  295.562952]  [<ffffffff8152ba4a>] ?
drm_atomic_set_crtc_for_connector+0x2a/0xe0
[  295.562954]  [<ffffffff8152c722>] drm_atomic_commit+0x32/0x50
[  295.562956]  [<ffffffff81509175>] drm_atomic_helper_set_config+0x75/0xb0
[  295.562958]  [<ffffffff8151cb60>] drm_mode_set_config_internal+0x60/0x110
[  295.562959]  [<ffffffff81520276>] drm_mode_setcrtc+0x186/0x4f0
[  295.562961]  [<ffffffff8118d0b8>] ? __might_fault+0x48/0xa0
[  295.562963]  [<ffffffff8151215d>] drm_ioctl+0x13d/0x590
[  295.562964]  [<ffffffff815200f0>] ? drm_mode_setplane+0x1b0/0x1b0
[  295.562966]  [<ffffffff811e5c7a>] do_vfs_ioctl+0x8a/0x670
[  295.562968]  [<ffffffff817c3026>] ? int_ret_from_sys_call+0x52/0x9f
[  295.562970]  [<ffffffff811f1b2a>] ? __fget_light+0x6a/0x90
[  295.562971]  [<ffffffff811e629c>] SyS_ioctl+0x3c/0x70
[  295.562973]  [<ffffffff817c2e9b>] entry_SYSCALL_64_fastpath+0x16/0x73
[  295.562974] ---[ end trace dea6ba6d805caae2 ]---

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