[Bug 106076] [CI] igt at pm_rpm@debugfs-read - dmesg-warn - Unclaimed read from register 0x1e1110

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106076

--- Comment #1 from Martin Peres <martin.peres at free.fr> ---
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_51/fi-byt-j1900/igt@debugfs_test@read_all_entries_display_off.html

[   93.363731] ------------[ cut here ]------------
[   93.363809] Unclaimed read from register 0x1e1110
[   93.363939] WARNING: CPU: 1 PID: 1297 at
drivers/gpu/drm/i915/intel_uncore.c:1077 __unclaimed_reg_debug+0x40/0x50 [i915]
[   93.363944] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic i915 snd_hda_intel btusb btrtl btbcm intel_powerclamp
snd_hda_codec coretemp btintel snd_hwdep crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel snd_hda_core bluetooth snd_pcm ecdh_generic r8169 mii
lpc_ich prime_numbers i2c_hid
[   93.364058] CPU: 1 PID: 1297 Comm: debugfs_test Tainted: G     U           
4.17.0-rc6-g5195e857106a-drmtip_51+ #1
[   93.364063] Hardware name: GIGABYTE GB-BXBT-1900/MZBAYAB-00, BIOS F6
02/17/2015
[   93.364148] RIP: 0010:__unclaimed_reg_debug+0x40/0x50 [i915]
[   93.364153] RSP: 0018:ffffa476805f3d18 EFLAGS: 00010086
[   93.364161] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
0000000000000002
[   93.364166] RDX: 0000000080000002 RSI: ffffffff880867ee RDI:
00000000ffffffff
[   93.364170] RBP: 00000000001e1110 R08: 0000000000000000 R09:
0000000000000001
[   93.364175] R10: ffffa476805f3cb0 R11: 0000000000000000 R12:
0000000000000001
[   93.364179] R13: 0000000000000001 R14: 00000000ffffffff R15:
0000000000000202
[   93.364184] FS:  00007f428bcc6980(0000) GS:ffff94563fc80000(0000)
knlGS:0000000000000000
[   93.364189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.364194] CR2: 00007f490dd84a18 CR3: 000000011c834000 CR4:
00000000001006e0
[   93.364198] Call Trace:
[   93.364278]  fwtable_read32+0x222/0x280 [i915]
[   93.364349]  i915_interrupt_info+0xa1b/0xd00 [i915]
[   93.364365]  seq_read+0xf1/0x470
[   93.364383]  full_proxy_read+0x51/0x80
[   93.364396]  __vfs_read+0x31/0x150
[   93.364410]  ? do_sys_open+0x13b/0x240
[   93.364417]  ? rcu_read_lock_sched_held+0x6f/0x80
[   93.364425]  vfs_read+0x9e/0x140
[   93.364435]  ksys_read+0x50/0xc0
[   93.364447]  do_syscall_64+0x55/0x190
[   93.364456]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   93.364462] RIP: 0033:0x7f428b65d34e
[   93.364466] RSP: 002b:00007ffd349efc08 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[   93.364475] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007f428b65d34e
[   93.364479] RDX: 0000000000000200 RSI: 00007ffd349efc50 RDI:
0000000000000006
[   93.364484] RBP: 00007ffd349efe60 R08: 0000000000000000 R09:
0000000000000022
[   93.364488] R10: 0000000000000000 R11: 0000000000000246 R12:
000055db362432c0
[   93.364492] R13: 00007ffd349f0320 R14: 0000000000000000 R15:
0000000000000000
[   93.364514] Code: db 74 05 5b 5d 41 5c c3 45 84 e4 48 c7 c0 de 9b 40 c0 48
c7 c6 d4 9b 40 c0 48 0f 44 f0 89 ea 48 c7 c7 e7 9b 40 c0 e8 40 63 d5 c6 <0f> 0b
83 2d 0f cf 18 00 01 5b 5d 41 5c c3 66 90 41 56 41 55 41 
[   93.364763] irq event stamp: 70278
[   93.364769] hardirqs last  enabled at (70277): [<ffffffff879488cc>]
_raw_spin_unlock_irqrestore+0x4c/0x60
[   93.364775] hardirqs last disabled at (70278): [<ffffffff8794873d>]
_raw_spin_lock_irqsave+0xd/0x50
[   93.364781] softirqs last  enabled at (70260): [<ffffffff87c0032b>]
__do_softirq+0x32b/0x4e1
[   93.364788] softirqs last disabled at (70241): [<ffffffff8708f7f4>]
irq_exit+0xa4/0xb0
[   93.364874] WARNING: CPU: 1 PID: 1297 at
drivers/gpu/drm/i915/intel_uncore.c:1077 __unclaimed_reg_debug+0x40/0x50 [i915]
[   93.364879] ---[ end trace 87ccc05057a21359 ]---

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