[Bug 103337] [CI] igt at drv_suspend@debugfs-reader - dmesg-warn - *ERROR* Panel is unable to calculate any CRC after 6 vblanks | Unclaimed read from register 0x130090

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103337

--- Comment #4 from Marta Löfstedt <marta.lofstedt at intel.com> ---
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3310/shard-glkb4/igt@perf@rc6-disable.html

[ 4176.043375] Unclaimed read from register 0x130090
[ 4176.043427] ------------[ cut here ]------------
[ 4176.043505] WARNING: CPU: 3 PID: 10053 at
drivers/gpu/drm/i915/intel_uncore.c:976 __unclaimed_reg_debug+0x47/0x60 [i915]
[ 4176.043530] Modules linked in: i2c_dev snd_hda_intel i915 vgem
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic
x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core mei_me snd_pcm mei
r8169 mii prime_numbers i2c_hid pinctrl_geminilake pinctrl_intel [last
unloaded: i915]
[ 4176.043646] CPU: 3 PID: 10053 Comm: perf Tainted: G     U  W      
4.14.0-rc7-CI-CI_DRM_3310+ #1
[ 4176.043667] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS
GELKRVPA.X64.0062.B30.1708222146 08/22/2017
[ 4176.043691] task: ffff8801681d0040 task.stack: ffffc90000130000
[ 4176.043754] RIP: 0010:__unclaimed_reg_debug+0x47/0x60 [i915]
[ 4176.043768] RSP: 0018:ffffc90000133cf8 EFLAGS: 00010092
[ 4176.043783] RAX: 0000000000000025 RBX: 0000000000000000 RCX:
0000000000000002
[ 4176.043800] RDX: 0000000080000002 RSI: ffffffff81cb4dab RDI:
00000000ffffffff
[ 4176.043817] RBP: ffffc90000133d10 R08: 0000000000000001 R09:
0000000000000000
[ 4176.043834] R10: ffffc90000133c88 R11: 0000000000000000 R12:
0000000000130090
[ 4176.043850] R13: 0000000000000001 R14: 0000000000000000 R15:
ffff880172ae0bb8
[ 4176.043868] FS:  00007fe1965448c0(0000) GS:ffff88017fd80000(0000)
knlGS:0000000000000000
[ 4176.043887] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4176.043901] CR2: 0000562455bc7248 CR3: 000000017297d000 CR4:
00000000003406e0
[ 4176.043918] Call Trace:
[ 4176.043975]  fwtable_read32+0x243/0x2c0 [i915]
[ 4176.044031]  i915_drpc_info+0x27d/0x8e0 [i915]
[ 4176.044049]  seq_read+0xe1/0x3a0
[ 4176.044063]  full_proxy_read+0x54/0x80
[ 4176.044077]  __vfs_read+0x28/0x120
[ 4176.044091]  ? SyS_newfstat+0x3a/0x50
[ 4176.044103]  vfs_read+0xa8/0x150
[ 4176.044114]  SyS_read+0x49/0xb0
[ 4176.044128]  entry_SYSCALL_64_fastpath+0x1c/0xb1
[ 4176.044140] RIP: 0033:0x7fe194a4b890
[ 4176.044150] RSP: 002b:00007ffc5806c408 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 4176.044170] RAX: ffffffffffffffda RBX: 0000000000000005 RCX:
00007fe194a4b890
[ 4176.044187] RDX: 0000000000001000 RSI: 0000562455bc6240 RDI:
0000000000000006
[ 4176.044204] RBP: 0000000000000006 R08: 00007fe194d150a8 R09:
0000000000000000
[ 4176.044220] R10: 00007fe194d14b58 R11: 0000000000000246 R12:
0000000000000000
[ 4176.044237] R13: 00007ffc5806ddc0 R14: 0000000000000000 R15:
0000000000000000
[ 4176.044258] Code: 01 75 31 84 db 75 2d 45 84 ed 48 c7 c0 fe 4c 22 a0 48 c7
c6 f4 4c 22 a0 48 0f 44 f0 44 89 e2 48 c7 c7 07 4d 22 a0 e8 3a 85 f8 e0 <0f> ff
83 2d e0 2d 10 00 01 5b 41 5c 41 5d 5d c3 66 0f 1f 84 00 
[ 4176.044396] ---[ end trace b919e89a83d0d7e0 ]---

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